2004 Microchip Technology Inc. DS21909B-page 1
MCP9800/1/2/3
Features
Temperature - to-Di gital Converter
Accuracy with 12-bit Resolution:
- ±0.5°C (typ.) at +25°C
- ±1°C (max.) from -10°C to +85°C
- ±2°C (max.) from -10°C to +125°C
- ±3°C (max.) from -55°C to +125°C
User-selectable Resolution: 9 – 12 bit
Operating Voltage Range: 2.7V to 5.5V
2-wire Interfac e: I2C™/SMBus Compatible
Operating Current: 200 µA (typ.)
Shutdown Current: 1 µA (max.)
Power-saving One-shot Temperature
Measurement
Available Packages: SOT-23-5, MSOP-8, SOIC-8
Typical Applications
Personal Computers and Servers
Hard Disk Drives and Other PC Peripherals
Entertainment Systems
Office Equipment
Data Communication Equipment
Mobile Phones
General-purpose Temperature Monitoring
Typical Application
Description
Microchip Technology Inc.’s MCP9800/1/2/3 family of
digital temperature sensors converts temperatures
between -55°C and +125°C to a digital word. They
provide an accuracy of ±1°C (max.) from -10°C to
+85°C.
The MCP9800/1/2/3 family comes with user-program-
mable registers that provide flexibility for temperature
sensing applications. The register settings allow user-
selectable 9-bit to 12-bit temperature measurement
resolution, configurati on of the power-saving Shu tdown
and One-shot (single conversion on command while in
the Shutdown) modes and the specification of both
temperature alert output and hysteresis limits. When
the temperature changes beyond the specified limits,
the MCP9800/1/2/3 outputs an alert signal. The user
has the opt i on of setting the alert ou tput signal polarity
as an active-low or active-high comparator output for
thermos tat ope ration, or a s temperature event in terrupt
output for microprocesso r-based systems.
This sensor has an industry standard 2-wire, I2C™/
SMBus compatible serial interface, allowing up to eight
devices to be controll ed in a single serial bus. These fea-
tures make the MCP9800/1/2/3 ideal for sophisticated
multi-zone temperature-m onitoring app li cations.
Package Types
PICmicro®
VDD
RMicrocontrolle
r
MCP9800/02
GND
VDD
ALERT
SDA
SCLK
4
1
2
3
5
I2C™ Port
I/O Port
RPULL-UP
PIC16F737
SDA
GND
ALERT
SCLK
GND
VDD
ALERT
SDA
SCLK
4
MCP9800
MCP9802
1
2
3
5
SOT-23-5
MCP9801
MCP9803
1
2
3
4
8
7
6
5
SOIC, MSOP
A0
VDD
A1
A2
MCP9800/02A0: A2, A1, A0 are internally set to (0, 0, 0)
MCP9800/02A5: A2, A1, A0 are internally set to (1, 0, 1)
MCP9802/03: Serial Bus time-out 35 ms (typ.)
2-Wire High-A ccuracy Temperatur e Sensor
MCP9800/1/2/3
DS21909B-page 2 2004 Microchip Technology Inc.
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maxim um Ratings †
VDD....................................................................... 6.0V
Volt a ge at all Inpu t/O utp ut pins .... GND – 0.3V to 5.5V
Storage temperature ..........................-65°C to +150°C
Ambient temp. with power applied .....-55°C to +125°C
Junction Temperature (TJ)..................................150°C
ESD protection on all pins (HBM:MM).......(4 kV:400V)
Latch-Up Current at each pin........................ ±200 mA
†Notice: Stresses above those listed under “Maximum
ratings” may cause perm anent dama ge to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
PIN FUNCTION TABLE
NAME FUNCTION
SDA Bidirectional Serial Data (open-drain
output)
SCLK Serial Clock I nput
ALERT Temperature Alert Output (open-drain)
A2 Address Sele ct Pin (bit 2)
A1 Address Sele ct Pin (bit 1)
A0 Address Sele ct Pin (bit 0)
VDD Power Supply Input
GND Ground
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, GND = Ground, and
TA = -55°C to +125°C.
Parameters Sym Min Typ Max Unit Conditions
Power Supply
Operati ng Volt age Ran ge VDD 2.7 5.5 V
Operati ng Curren t IDD 200 400 µA Continuous Operation
Shutdown Current ISHDN 0.1 1 µA Shutdown Mode
Power On Reset Threshold (POR) VPOR —1.7 VV
DD falling edge
Temperature Sensor Accuracy
Accuracy with 12-bit Resolution:
TA = +25°C TACY ±0.5 °C VDD = 3.3V
-10°C < TA +85°C TACY -1.0 +1.0 °C VDD = 3.3V
-10°C < TA +125°C TACY -2.0 +2.0 °C VDD = 3.3V
-55°C < TA +125°C TACY -3.0 +3.0 °C VDD = 3. 3V
Internal Σ∆ ADC
Conve r si on Time:
9-bit Resolution tCONV 30 75 ms 33 samples/sec (typ .)
10-bit Resolution tCONV 60 15 0 ms 17 samples /sec (typ.)
11-bit Resolution tCONV 120 300 ms 8 samples/sec (t yp.)
12-bit Resolution tCONV 240 600 ms 4 samples /sec (typ.)
Alert Output (Open-drain)
High-level Current IOH ——AV
OH = 5V
Low-level Voltage VOL ——0.4VI
OL= 3 mA
Thermal Response
Response Time tRES 1.4 s Time to 63% (88°C)
27°C (Air) to 125°C (o il bath)
2004 Microchip Technology Inc. DS21909B-page 3
MCP9800/1/2/3
Graphical Symbol Description
DIGITAL INPUT/OUTPUT PIN CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, GND = Ground and
TA = -55°C to +125°C.
Parameters Sym Min Typ Max Units Conditions
Serial Input/Output (SCLK, SDA, A0, A1, A2)
Input
High-level Voltage VIH 0.7 VDD —— V
Low-level Voltage VIL ——0.3V
DD V
Input Current IIN -1 +1 µA
Output (SDA)
Low-level Voltage VOL ——0.4VI
OL= 3 mA
High-level Current IOH ——1µAV
OH = 5V
Low-level Current IOL 6—mAV
OL = 0.6V
Capacitance CIN —10pF
SDA and SCLK Inputs
Hysteresis VHYST 0.05 VDD —— V
VDD VIH VIL
IIN
Voltage
Current
time
time
VDD
IOH
Voltage
Current
time
time
INPUT OUTPUT
VOL
IOL
TEMPERATURE CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, VDD = +2.7V to +5.5V, GND = Ground.
Parameters Sym Min Typ Max Units Conditions
Temperature Ranges
Specified Temperature Range TA-55 +125 °C (Note 1)
Operati ng Tempe rature Range TA-55 +125 °C
Storage Temperature Range TA-65 +150 °C
Thermal Package Resistances
Thermal Resistance, 5L-SOT23 θJA —256°C/W
Thermal Resistance, 8L-SOIC θJA —163—°C/W
Thermal Resistance, 8L-MSOP θJA —206°C/W
Note 1: Operation in this range must not cause TJ to exceed Maximum Junction Temperature (+150°C).
MCP9800/1/2/3
DS21909B-page 4 2004 Microchip Technology Inc.
Timing Diagram
SERIAL INTERFACE TIMING SPECIFICATIONS
Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, GND = Ground, -55°C < TA < +125°C,
CL = 80 pF, and all limits measured to 50% point.
Parameters Sym Min Typ Max Units Conditions
2-Wire I2C/SMBus Compat ible Interface
Serial Port Frequency fSC 0 400 kHz I2C MCP9800/01
fSC 10 400 kHz SMBus MCP9802/03
Clock Period tSC 2.5 µs
Low Clock tLOW 1.3 µs
High Clock tHIGH 0.6 µs
Rise Time tR20 300 ns 10% to 90% of VDD (SCLK, SDA)
Fall Time tF20 300 ns 90% to 10% of VDD (SCLK, SDA)
Data Setup Before SCLK High tSU-DATA 0.1 µs
Data Hold After SCLK Low tH-DATA 0—0.9µs
Start Condition Setup Time tSU-START 0.6 µs
Start Condition Hold Time tH-START 0.6 µs
Stop Condition Setup Time tSU-STOP 0.6 µs
Bus Idle tIDLE 1.3 µs
Time Out tOUT 25 35 50 ms MCP9802/03 only
t
SU-START
t
H-START
t
SU-DATA
t
SU-STOP
t
IDLE
SCLK
SDA
SCLK
SDA
t
H-DATA
t
R
,t
F
t
SC
SCLK
SDA
t
HIGH
t
LOW
START Condition
STOP Condition
Data Transmission
t
OUT
2004 Microchip Technology Inc. DS21909B-page 5
MCP9800/1/2/3
2.0 TYPICAL PERFORMANCE CURVES
Note: Unless otherwi se noted: VDD = 2.7V to 5.5V.
FIGURE 2-1: Average Temperatu re
Accuracy vs. Ambient Temperature, VDD = 3.3V.
FIGURE 2-2: Average Temperatu re
Accuracy vs. Ambient Temperature.
FIGURE 2-3: Average Temperatu re
Accuracy vs. Ambient Temperature, VDD = 3.3V.
FIGURE 2-4: Temperature Accuracy
Histogram, TA = +25°C.
FIGURE 2-5: Supply Current vs. Ambient
Temperature.
FIGURE 2-6: Shutdown Current vs.
Ambient Temperatu re .
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
-55 -35 -15 5 25 45 65 85 105 125
TA (°C)
Temperature Accuracy (°C)
12-Bit Resolution
160 Samples
VDD= 3.3V
Spec. Limits
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
-55 -35 -15 5 25 45 65 85 105 125
TA (°C)
Temperature Accuracy (°C)
12-Bit Resolution
160 Sam pl es
VDD = 2.7V
VDD = 3.3V
VDD = 5.5V
VDD = 5.0V
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
-55 -35 -15 5 25 45 65 85 105 125
TA (°C)
Temperature Accuracy (°C)
11-Bit
12-Bit
9-Bit
10-Bit
VDD = 3.3V
160 Samples
Resolution
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Temperature Accuracy (°C)
Occurrences
TA = +25°C
VDD = 3.3V 5 lots
32 Samples/lot
160 Samples
50
100
150
200
250
300
350
400
-55 -35 -15 5 25 45 65 85 105 125
TA (°C)
IDDA)
VDD = 2.7V
VDD = 3.3V
VDD = 5.5V
VDD = 5.0V
0
0.2
0.4
0.6
0.8
1
-55 -35 -15 5 25 45 65 85 105 125
TA (°C )
ISHDN (µA)
MCP9800/1/2/3
DS21909B-page 6 2004 Microchip Technology Inc.
Note: Unless otherwi se noted: VDD = 2.7V to 5.5V.
FIGURE 2-7: ALERT and SDA IOL vs .
Ambient Temperature.
FIGURE 2-8: ALERT and SDA Output
VOL vs. Ambient Temperature.
FIGURE 2-9: MCP980X Therma l
Response vs Time.
6
12
18
24
30
36
42
48
-55 -35 -15 5 25 45 65 85 105 125
TA (°C)
ALERT & SDA IOL (mA)
VDD = 5.5V
VDD = 3.3V
VDD = 2.7V
VOL
= 0.6V
0
0.1
0.2
0.3
0.4
-55 -35 -15 5 25 45 65 85 105 125
TA (°C)
ALERT & SDA VOL (V)
VDD = 5.5V
VDD = 3.3V
VDD = 2.7V
IOL
= 3mA
5
25
45
65
85
105
125
145
-202468101214161820
Time (s)
Temperature Data (°C)
SOIC
Average of 10 samples per package
27°C (Air) to 125°C (Oil bath)
MSOP
SOT-23
2004 Microchip Technology Inc. DS21909B-page 7
MCP9800/1/2/3
3.0 PIN DESCRIPTION
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1: PIN FUNCTION TABLE
3.1 Serial Data Pin (SDA)
The SDA is a bidirectional input/output pin, used to
serially transmit data to and from the host controller.
This pin requires a pull-up resistor to output data.
3.2 Serial Clock Pin (SCLK)
The SCLK is a clock input pin. All communication and
timing is relative to the signal on this pin. The clock is
generated by the host controller on the bus.
3.3 Power Supply Input (VDD)
The VDD pin is the power pin . The operating voltage, a s
specified in the DC electrical specification table, is
applied on this pi n.
3.4 Ground (GND)
The GND pin is the system ground pin.
3.5 ALERT Output
The MCP9800/1/2/3’s ALERT pin is an open-drain
output pin . The device out put s an alert signal when th e
ambient temperature goes beyond the user-
programmed temperature limit.
3.6 Address Pins (A2, A1, A0)
These pins are device or slave address input pins and
are available only with the MCP9801/03. The device
addresses for the MCP9800/02 are factory-set.
The addres s pins are the Least Significa nt bits (LSb) of
the device address bits. The Most Significant bits
(MSb) (A6, A5, A4, A3) are factory- set to <1001>. This
is illustrated in Table 3-2.
MCP9800
MCP9802
SOT-23-5
MCP9801
MCP9803
MSOP, SOIC Symbol Function
5 1 SDA Bidirectional Serial Data
4 2 SCLK Serial Clock Inpu t
3 3 ALER T Temperature Alert Output
2 4 GND Ground
5 A2 Address Select Pin (bit 2)
6 A1 Address Select Pin (bit 1)
7 A0 Address Select Pin (bit 0)
18V
DD Power Supply Input
TABLE 3-2: SLAVE ADDRESS
Device A6 A5 A4 A3 A2 A1 A0
MCP9800/02A0 1001000
MCP9800/02A5 1001101
MCP9801/03 1001XXX
Note: User-selectable address is shown by X.
MCP9800/1/2/3
DS21909B-page 8 2004 Microchip Technology Inc.
4.0 FUNCTIONAL DESCRIPTION
The MCP9800/1/2/3 family of temperature sensors
consists of a band-gap type temperature sensor, a Σ∆
Analog-to-Digital Converter (ADC) , user-programmable
registers and a 2-wire I2C/SMBus protocol compatible
serial interface.
FIGURE 4-1: Functional Block Diagram.
4.1 Temperature Sensor
The MCP9800/1/2/3 uses the difference in the base-
emitter voltage of a transistor while its co llector current
is chang ed fr om IC1 to IC2. Wit h this metho d, the VBE
depends only on the ratio of the two currents and the
ambient temperature, as shown in Equation 4-1.
EQUATION 4-1:
4.2 Σ∆ Analog-to-Digital Converter
A sigma-delta analog-to-digital converter is used to
convert VBE to a digital word that corresponds to the
transistor temperature. The converter has an
adjustable resolution from 9-bits (at 30 ms conversion
time) to 12-bits (at 240 ms conversion time). Thus, it
allows the user to make trade-offs between resolution
and conversion time. Refer to Section 4.3.4 “Sensor
Configuration Register (CONFIG)” and
Section 4.3.4.7 “Σ∆ ADC Resolution” for details.
Resolution
9-Bit
10-Bit
11-Bit
12-Bit
Temperature
THYST
TSET
Register
Register
Register
Register
Pointer I2C™/SMBus
Interface
Configuration
Register Σ∆ ADC
Band-Gap
Temperature
Sensor
One-Shot
Shutdown
Fault Queue
Alert Polarity
Alert Comp/Int
VBE kT
q
------

ln IC1IC2
()×=
Where: T = temperature in kelvin
VBE = change in diode base-emitter
voltage
k = Boltzma nn' s co nstant
q = electron charge
IC1 and IC2= currents with n:1 ratio
2004 Microchip Technology Inc. DS21909B-page 9
MCP9800/1/2/3
4.3 Registers
The MCP9800/1/2/3 family has four registers that are
user-accessible. These registers are specified as the
ambien t te mp era ture register, the t em pera ture li mi t-s et
register , the te mperature hysteresis register an d device
configuration registers.
The ambient temperature register is a read-only
register and is used to acce ss the ambient tempe rature
data . The dat a from th e ADC is lo aded in pa rall el in th e
register. The temperature limit-set and temperature
hysteresis registers are read/write registers that
provide user-programmable temperature limits. If the
ambient temperature drifts beyond the programmed
limit s , t he MCP9800/1/2 /3 outputs a n ale rt s ig nal using
the ALERT pin (refer to Section 4.3.4.3 “ALERT Out-
put Configuration ). The device configuratio n register
provides access for the user to configure the
MCP98 00/1/2/3’ s vario us features . These regi sters are
described in further detail in the following sections.
FIGURE 1: Register Block Diagram.
The regis t ers a re ac ce ss ed by se nding regist er po inter
to the MCP9 800/1/2/3 usin g the seria l interface. This is
an 8- bit po inter. Howev er, the tw o Least Si gnifi cant bit s
(LSb) are us ed a s poi nters and all o ther bit s n eed to be
cleared <0>. This device has additional registers that
are reserved for test and calibration. If these registers
are acce ssed, the device m ay not pe rform accordi ng to
the specification. The pointer description is shown
below.
REGISTER 4-1: REGISTER POINTER
ALERT Outpu t
Control Logic
ALERT
Output
Resolution
Temperature
THYST
TSET
Register
Register
Register
Configuration
Register
One-Shot
Shutdown
Fault Queue
Alert Polarity
Alert Comp/Int
U-0 U-0 U-0 U-0 U-0 U-0 R/W-0 R/W-0
0 0 0 0 0 0 P1 P0
bit 7 bit 0
bit 7-3 Unimplemented: Read as ‘0
bit 2-0 Pointer bit s
00 = Temperature Register
01 = Configuration Register
10 = Temperature Hysteresis Register
11 = Temperature Limit-set Register
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
- n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
MCP9800/1/2/3
DS21909B-page 10 2004 Microchip Technology Inc.
4.3.1 AMBIENT TEMPERATURE
REGISTER (TA)
The MCP9800/1/2/3 has a 16-bit read-only ambient
temperature register (TA) that contains 9-bit to 12-bit
temperature data. This data is formatted in two’s
complement. The bit assignments, as well as the
corresponding resolution, is shown in the register
assignment below.
The refresh rate of this register depends on the
selec ted AD C resolut ion. It takes 30 ms (ty p.) for 9-bit
data and 240 ms (typ.) for 12-bit data. Since this
register is double-buffered, the user can read the
register while the MCP9800/1/2/3 performs analog-to-
digit al conver sion in the ba ckground. The decimal cod e
to ambient temperature conversion is shown in
Equation 4-2:
EQUATION 4-2:
TACode 2n
×=
Where:
n = -1, -2, -3 a n d -4 for 9-bi t, 1 0-bi t, 11-bit
and 12-bit resolution, respectively
TA= Ambient Temperature (°C)
Code= MCP980X output in decimal
(Table 4-1)
REGISTER 4-2: AMBIENT TEMPERATURE REGISTER (TA)
Upper Half:
R-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0
Sign 26 °C/bit 25 °C/bit 24 °C/bit 23 °C/bit 22 °C/bit 21 °C/bit 20 °C/bit
bit 15 bit 8
Lower Half:
R-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0
2-1 °C/bit 2-2 °C/bit 2-3 °C/bit 2-4 °C/bit 0 0 0 0
bit 7 bit 0
Note: When the 9-bit, 10-bit or 11-bit resolutions are selected, bit 6, bit 7 or bit 8 will remain clear <0>
,
respectively.
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
- n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
TABLE 4-1: AMBIENT TEMPERATURE TO CODE CONVERSION
Ambient Temperature Code TA
(°C)
9-Bit 10-Bit 11-Bit 12-Bit Binary Hexadecimal Decimal
+125°C 0111 1101 0uuu uuuu(1) 0FA 250 +125
+25.4375°C 0001 1001 0uuu uuuu 032 50 +25
+0.5°C 0000 0000 1uuu uuuu 001 1 +0.5
+125°C 0111 1101 00uu uuuu 1F4 500 +125
+25.4375°C 0001 1001 01uu uuuu 065 101 +25.25
+0.25°C 0000 0000 01uu uuuu 001 1 +0.25
+125°C 0111 1101 000u uuuu 3E8 1000 +125
+25.4375°C 0001 1001 011u uuuu 0CB 203 +25.375
+0.125°C 0000 0000 001u uuuu 001 1 +0.125
+125°C 0111 1101 0000 uuuu 7D0 2000 +125
+25.4375°C 0001 1001 0111 uuuu 197 407 +25.4375
+0.0625°C 0000 0000 0001 uuuu 001 1 +0.0625
0°C 0000 0000 0000 uuuu 000 0 0
–0.0625°C 1111 1111 1111 uuuu(2)001(3)-1 -0.0625
–25.4375°C 1110 0110 1001 uuuu 197 -407 -25.4375
–55°C 1100 1001 0000 uuuu 370 -880 -55
Note 1: ‘u’ represents unused bits. The MCP9800/1/2/3 clears <0> the unused bits.
2: This data is in two’s complement format, which indicates ambient temperature below 0°C.
3: Negative temperature magnitude in Hexadecimal. This conversion is done by complimenting each binary bit and
adding 1.
2004 Microchip Technology Inc. DS21909B-page 11
MCP9800/1/2/3
4.3.2 TEMPERATURE LIMIT-SET
REGISTER (TSET)
The MCP9800/1/2/3 has a 16-bit read/write Tempera-
ture Limit-Set register (TSET) which contains a 9-bit data
in two’s compliment format. This data represents a
maximum t em pera ture l im it. I f the ambien t tem pera ture
exceed s this specified limit, the MCP9800 /1/2/3 asserts
an alert output. (Refer to Section 4.3.4.3 “ALERT Out-
put Configuration”).
This register uses the nine Most Significant bits (MSb)
and all other bits are don’t cares.
The power-up default value of TSET register is 80°C
<0 1010 0000> in binary.
REGISTER 4-3: TEMPERATURE LIMIT-SET REGISTER (TSET)
Upper Half:
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
Sign 26 °C/bit 25 °C/bit 24 °C/bit 23 °C/bit 22 °C/bit 21 °C/bit 20 °C/bit
bit 15 bit 8
Lower Half:
R/W-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0
2-1 °C/bit 0 0 0 0 0 0 0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
- n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
MCP9800/1/2/3
DS21909B-page 12 2004 Microchip Technology Inc.
4.3.3 TEMPERATURE HYSTERESIS
REGISTER (THYST)
The MCP9800/1/2/3 has a 16-bit read/write tempera-
ture hysteresis register (THYST) that contains a 9-bit
data in two’s compliment format. This register is used
to set a hysteresis for the TSET limit. Therefore, the data
represen ts a mini mum t empera ture li mit. If the am bient
temperature drifts below the specified limit, the
MCP9800/1/2/3 asserts an alert output (refer to
Section 4.3.4.3 “ALERT Output Configuration).
This register uses the nine Most Significant bits (MSb)
and all other bits are don’t cares.
The power-up default value of THYST register is 75°C
<0 1001 0110> in binary.
REGISTER 4-4: TEMPERATURE HYSTERESIS REGISTER (THYST)
Upper Half:
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
Sign 26 °C/bit 25 °C/bit 24 °C/bit 23 °C/bit 22 °C/bit 21 °C/bit 20 °C/bit
bit 15 bit 8
Lower Half:
R/W-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0
2-1 °C/bit 0 0 0 0 0 0 0
bit 7 bit
0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
- n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
2004 Microchip Technology Inc. DS21909B-page 13
MCP9800/1/2/3
4.3.4 SENSOR CONFIGURATION
REGISTER (CONFIG)
The MCP9800/1/2/3 has an 8-bit read/write configura-
tion regi ster (CONFIG) that allows the user to select the
different features. These features include shutdown,
ALER T out put s elect as comp arato r or i nterrupt outpu t,
ALERT output polarity, fault queue cycle, temperature
measurement resolution and One-shot mode (single
conversion while in shutdown). These functions are
described in detail in the following sections.
REGISTER 4-5: CONFIGURATION REGISTER (CONFIG)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
One-Shot Resolution Fault Queue ALERT
Polarity COMP/
INT Shut-
down
bit 7 bit 0
bit 7 ONE-SHOT bit
1 = Enabled
0 = Disabled (Power-up default)
bit 5-6 Σ∆ AD C RESOLUTION bit
00 = 9 bit (Power-up default)
01 = 10 bit
10 = 11 bit
11 = 12 bit
bit 3-4 FAULT QUEUE bit
00 = 1 (Power-up default)
01 =2
10 =4
11 =6
bit 2 ALERT POLARITY bit
1 =Active-High
0 = Active-Low (Power-up default)
bit 1 COMP/INT bit
1 = Interrupt Mode
0 = Comparator Mode (Power-up default)
bit 0 SHUTDOWN bit
1 = Enable
0 = Disable (Power-up default)
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
- n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
MCP9800/1/2/3
DS21909B-page 14 2004 Microchip Technology Inc.
4.3.4.1 Shutdown Mode
The Shutdown mode disables all power-consuming
activities (including temperature sampling operations)
while leaving the serial interface active. The device
consumes 1 µA (max.) in this mode. It remains in this
mode until the configuration register is updated to
enable continuous conversion or until power is
recycled.
In Shutdown mode, the CONFIG, TA, TSET and THYST
registers can be read or written. However, the serial
bus activity will increase the shutdown current.
4.3.4.2 One-Shot Mode
The MCP9800/1/2/3 can also be used in a One-shot
mode t hat can b e selected using bi t 7 of the C ONFIG
register. The One-shot m ode performs a si ngle temper-
ature measurement and returns to Shutdown mode.
This mode is especially useful for low-power applica-
tions where temperature is measured upon command
from a controller. For example, a 9-bit TA in One-shot
mode consumes 200 µA (typ.) for 30 ms and 0.1 µA
(typ.) during shutdown.
To access this feature, the device needs to initially be
in Shutdown mode. This is done by sending a byte to
the CONFIG register with bit 0 set <1> and bit 7
cleared <0>. Once the device is in Shutdown mode,
CONFIG needs to be written again with bit 0 and bit 7
set <1>. This begins the single conversion cycle of
30 ms for 9-bit data. Once the conversion is
completed, TA is updated and bit 7 of CONFIG
becomes cleared <0> by the MCP 9800/1/2/3.
TABLE 4-6: SHUTDOWN AND ONE-SHOT
MODE DESCRIPTION
4.3.4.3 ALERT Output Configuration
The ALERT output can be configured as either a
comparator output or as Interrupt Output mode using
bit 1 of CONFIG. The polarity can also be specified as
an active-high or active-low, using bit 2 of CONFIG.
The following sections describe each Output mode
and Figure 4-2 shows graphical description.
4.3.4.4 Comparato r Mode
In the Comp arator mode, the AL ERT output is a sserted
when TA is greater than TSET. The pin remains active
until TA is lower than THYST. The Comparator mode is
useful for thermostat-type applications such as turning
on a cooling fan or trig geri ng a s ys tem s hu t do wn when
the temperature exceeds a safe operating range.
In the Comparator mode, if the device enters the
Shutdown mode with asserted ALERT output, the
output remains active during shutdown. The device
must be operating in continuous conversion, with TA
below THYST, for the ALERT output to be deasserted.
4.3.4.5 Interrupt Mode
In the Interrupt mode, the ALERT output is asserted
when TA is greater than TSET. However, the output is
deasserted when the user performs a read from any
regi ster . This mode is designed for interrupt driven micro-
controller based systems. The microcontroller receiving
the interrupt will have to acknowledge the interrupt by
reading any register from the MCP9800/1/2/3. This will
clear the interrupt and the ALERT pin will become
deasserted. When TA drifts below THYST, the MCP9 80 0/
1/2/3 outputs ano ther int errupt an d the cont roller needs
to read a register t o deassert th e ALER T output. Shutt ing
down the device will also reset or deassert the ALERT
output.
FIGURE 4-2: Alert Output.
Operational Mode One-Shot
(Bit 7) Shutdown
(Bit 0)
Contin uou s Co nv ers ion 00
Shutdown 01
Contin uou s Co nv ers ion
(One-shot is ignored) 10
One-Shot 11
Note: The shutdown command <01> needs to
be programmed before sending a one-
shot command <11>.
TSET
THYST
ALERT
ALERT
Comparator Mode
Interrupt Mode
Active-Low
Active-Low
TA
2004 Microchip Technology Inc. DS21909B-page 15
MCP9800/1/2/3
4.3.4.6 Fault Queue
The fault queue feature can be used as a filter to lessen
the probability of spurious activation of the ALERT pin.
TA must remain above TSET for the consecutive num-
ber of conversion cycles selected using the Fault
Queue bits. Bit 3 and bit 4 of CONFIG can be used to
select up to six fault queue cycles. For example, if six
fault queues are selected, TA must be greater than
TSET for six consecutive conversions before ALERT is
asse rted as a comparator or an inte rru pt output.
This queue setting also applies for THYST. TA must
remain below THYST for six consecutive conversions
before ALERT is deasserted (comparator mode) or
before another interrupt is asserted (interrupt mode).
4.3.4.7 Σ∆ ADC Resolution
The MCP9800/1/2/3 provi des access to select the ADC
resoluti on from 9- bit to 12-bit u sing bit 6 and bi t 5 of the
CONFIG register. The user can gain better insight into
the trends and characteristics of the ambient
temperature by using a finer resolution. Increasing the
resolution also reduces the quantization error.
Figure 2-4 shows accuracy versus resolution.
Table 4-1 shows the TA register conversion time for the
corresponding resolution.
TABLE 4-1: RESOLUTION AND
CONVERSION TIME
4.4 Summary of Power-up Default
The MCP9800/1/2/3 has an internal Power-on Reset
(POR) circuit. If the power supply voltage VDD glitches
down to th e 1.7V (t yp.) thre shold , the devi ce rese ts th e
registers to the power-up default settings.
Table 4-2 shows the power-up default s ummar y.
TABLE 4-2: POWER-UP DEFAULTS
Bits Resolution
°C/Bit (typ.) Conversion time
tCONV ms (typ.)
90.5 30
10 0.25 60
11 0.125 120
12 0.0625 240
Register Data
(Hex) Power-up Defaults
TA0000 0°C
TSET A000 80°C
THYST 9600 75°C
Pointer 00 Temperature register
CONFIG 00
Continuous Conversion
Compar ator mode
Active-Low Output
Fault Queue 1
9-bit Resolution
MCP9800/1/2/3
DS21909B-page 16 2004 Microchip Technology Inc.
5.0 SERIAL COMMUNICATION
5.1 2-Wire I2C/SMBus Compatible
Interface
The MCP9800/1/2/3 serial clock input (SCLK) and the
bidirectional serial data line (SDA) form a 2-Wire
bidirectional serial port for communication.
The following bus protocol has been defined:
TABLE 5-1: MCP980X SERIAL BUS
CONVENTIONS
5.1.1 DATA TRANSFER
Data transfers are initiated by a start condition
(START ), followed by a 7-b it device addre ss and a 1-bit
read/write. Acknowledge (ACK) from slave confirms
the reception of each byte. Each access must be
terminated by a stop condition (STOP).
Dat a tran sfer may be init iat ed w he n the bus is in ID LE.
5.1.2 MASTER/SLAVE
The bus is controlled by a master device (typically a
microcontroller) that controls the bus access and gener-
ates the start a nd sto p conditi ons. The MCP 980 0/1/ 2/3
is a slave devi ce and doe s not con trol other de vices in
the bus. Both master and slave devices can operate as
either transmitter or receiver. However, the master
device determines which mode is activated.
5.1.3 START/STOP CONDITION
A hig h- to - lo w t ran si t i on of t h e SD A l in e ( whi l e SC L K is
high) is the start condition. All data transfers must be
preceded by a start condition from the master . If a start
condition is generated during data transfer, the
MCP9800/1/2/3 resets and accepts the new start
condition.
A low -t o -hi gh t ran si t i on of t h e SD A l in e (w hi l e SCL K is
high) is the stop condition. All data transfers must be
ended by a stop condition from the master. If a stop
condition is introduced during data transmission, the
MCP9800/1/2/3 releases the bus.
5.1.4 ADDRESS BYTE
Following the start condition, the host must transmit the
address byte to the MC P9800/ 1/2/3. The 7-bit a ddr ess
for the MCP9800/02A0 and MCP9800/02A5 is
<1001000> and <1001101> in binary, respectively.
The address for the MCP9802/03 is
<1001,A2,A1,A0> in binary , where the A0, A1 and A2
bits are set ext ernall y by con nect ing the correspo ndin g
pins to VDD <1> or GND <0>. The 7-bit address trans-
mitted in th e serial bit strea m must match the sel ected
address for the MCP9800/1/2/3 to respond with an
ACK.
Bit 8 in the address byte is a read/write bit. Setting this
bit to ‘1’ commands a read operation, while ‘0
commands a write operation.
FIGURE 5-1: Device Addressing.
Term Description
Transmitter Device sending data to the bus
Receiver Device receiving data from the bus
Master The device that controls the serial bus,
typically a microcontroller
Slave The device addressed by the master,
such as the MCP9800/1/2/3
START A unique signal from master to initiate
serial interface with a slave
STOP A unique signal from the master to
terminate serial interface from a slave
Read/Write A read or write to the MCP9800/1/2/3
registers
ACK A receiver Acknow ledges (ACK ) the
reception of each byte by polling the
bus
NAK A receiver Not-Acknowledges (NAK) or
releases the bus to show End-of-Data
(EOD)
Busy Communication is not possible
because the bus is in use
Not Busy The bus is in the idle state, both SDA
and SCLK remain high
Data Valid SDA must remain stable before SCLK
becomes high in order for a data bit to
be considered valid. During normal
dat a transfe rs, SDA only cha nges st ate
while SCLK is low
123456789
SCLK
SDA 1001 A2A1A0
Start
Address Byte
Slave
Address R/W
MCP9800/1/2/3 Response
Code Address
A
C
K
2004 Microchip Technology Inc. DS21909B-page 17
MCP9800/1/2/3
5.1.5 DATA VALID
After the start condition, each bit of data in transmission
needs to be settled for time specified by tSU-DATA
before SCLK toggles from low-to-high (refer to the
Serial Interface Timing Specification).
5.1.6 ACKNOWLEDGE (ACK)
Each receiving device, when addressed, is obliged to
generate an acknowledge bit after the reception of
each byte. The master device must generate an extra
clock pulse for ACK to be recognized.
The acknowledging device has to pull down the SDA
line for tSU-DATA before the low-to-high transition of
SCLK from the Master and remains pulled down for
tH-DATA after high-to-low transition of SCLK.
During read, the master must signal an End-of-Data
(EOD) to the slave by not generating an ACK bit once
the last bit has been clocked out of the slave. In this
case, the slave will leave the data line released to
enable the master to generate the stop condition.
5.1.7 TIME OUT (MCP9802/03)
If the SCLK stays low for time specified by tOUT, the
MCP9802/03 resets the serial interface. This dictates
the minimum clock speed as specified in the SMBus
specification. The I2C bus specification does not limit
clock speed and, therefore, the master can hold the
clock indefinitely to process data (MCP9800/01 only).
MCP9800/1/2/3
DS21909B-page 18 2004 Microchip Technology Inc.
5.2 Graphical Representation of the
MCP9800/1/2/3 Serial Protocols
FIGURE 5-2: Read 1-byte and 2-byte data from a Register.
S = START Condition
P = STOP Conditi on
SDA A
C
K
1001A
Pointer
0000 PA
C
K
S2A
1A
01P
0
12345678 12345678
SCLK
00
Address Byte
A
C
K
1001AN
A
K
S P
2A
1A
0D
7D
6D
5D
4D
3D
2D
1D
0
12345678 12345678
Address Byte Data
R
MCP980X MCP980X
MCP980X Master
W
SDA A
C
K
1001A
Pointer
0000 PA
C
K
S2A
1A
01P
0
12345678 12345678
SCLK
00
Address Byte
A
C
K
1001A
MSB Data
A
C
KN
A
K
S P
2A
1A
0D
7D
6D
5D
4D
3D
2D
1D
0
12345678 12345678 12345678
Address Byte LSB Data
RD
15 D
14 D
13 D
12 D
11 D
10 D
9D
8
MCP980X MCP980X
MCP980X Master Master
W
SDA
SCLK
SDA
SCLK
Read 1-byte Data
Read 2-byte Data
2004 Microchip Technology Inc. DS21909B-page 19
MCP9800/1/2/3
FIGURE 5-3: Write 1-byte and 2-byte data from a Register.
SDA A
C
K
1001A0000 A
C
K
S2A
1A
0
12345678 12345678
SCLK
00
Address Byte
W
MCP980X MCP980X
P
1P
0
MSB Data
A
C
KA
C
KP
D
7D
6D
5D
4D
3D
2D
1D
0
12345678 12345678
LSB Data
D
15 D
14 D
13 D
12 D
11 D
10 D
9D
8
Pointer
S = START Condition
P = STOP Conditi on MCP980X
SDA A
C
K
1001A0000 A
C
K
S2A
1A
0
12345678 12345678
SCLK
00
Address Byte
W
MCP980X MCP980X
P
1P
0A
C
KP
D
7D
6D
5D
4D
3D
2D
1D
0
12345678
Data
Pointer
Write 1 -byte Data
Write 2 -byte Data
MCP980X
MCP980X
MCP9800/1/2/3
DS21909B-page 20 2004 Microchip Technology Inc.
FIGURE 5-4: Receive 1-byte data from previously set pointer.
S = START Condition
P = STOP Condition
SDA A
C
K
1001A
Pointer
0000 PA
C
K
S2A
1A
01P
0
12345678 12345678
SCLK
00
Address Byte
A
C
K
1001AN
A
K
S P
2A
1A
0D
7D
6D
5D
4D
3D
2D
1D
0
12345678 12345678
Address Byte Data
R
MCP980X MCP980X
MCP980X Master
W
A
C
K
1001AN
A
K
S P
2A
1A
0D
7D
6D
5D
4D
3D
2D
1D
0
12345678 12345678
Address Byte Data
R
MCP980X Master
Note: User can continue to receive 1-byte data indefinitely from a previously set register pointer.
SDA
SCLK
SDA
SCLK
Register Pointer Setting for Continuous Reception
Receive 1-byte Da ta
Receive Another 1-byte Data
2004 Microchip Technology Inc. DS21909B-page 21
MCP9800/1/2/3
FIGURE 5-5: Receive 2-byte data from previously set pointer.
S = START Condition
P = STOP Condition
SDA A
C
K
1001A
Pointer
0000 PA
C
K
S2A
1A
01P
0
12345678 12345678
SCLK
00
Address Byte
MCP980X MCP980X
W
Note: User can continue to receive 2-byte data indefinitely from a previously set register pointer.
A
C
K
1001A
MSB Data
A
C
KN
A
K
S P
2A
1A
0D
7D
6D
5D
4D
3D
2D
1D
0
12345678 12345678 12345678
Address Byte LSB Data
RD
15 D
14 D
13 D
12 D
11 D
10 D
9D
8
MCP980X Master Master
A
C
K
1001A
MSB Data
A
C
KN
A
K
S P
2A
1A
0D
7D
6D
5D
4D
3D
2D
1D
0
12345678 12345678 12345678
Address Byte LSB Data
RD
15 D
14 D
13 D
12 D
11 D
10 D
9D
8
MCP980X Master Master
Register Pointer Setting for Continuous Reception
Receive 2-byte Data
Receive Another 2-byte Data
MCP9800/1/2/3
DS21909B-page 22 2004 Microchip Technology Inc.
6.0 APPLICATIONS INFORMATION
6.1 Connecting to the Serial Bus
The SDA and SCLK serial interface are open-drain pins
that require pull-up resistors. This configuration is
shown in Figure 6-1.
FIGURE 6-1: Pull-up Resistors On Serial
Interface.
For the SMBus protocol, the number of devices con-
nect ed to t he bus are limited on ly by the maximum ris e
and fall times of the SDA and SCLK lines. Unlike the
I2C specifications, SM Bus does not s pecify a maximum
bus capacitance value. Rather, it specifies 350 µA
(max.) current through the pull-up resistor. Therefore,
the valu e of the pull-up resistors will vary dep ending on
the system’s sup ply vol tage (VDD). The pull-u p resis tor
values for a 5V system ranges 14.3 k to 50 k.
Minimi z in g b us c apac itan ce is sti ll ve ry imp o r tant , a s i t
directly affects the rise and fall times of the SDA and
SCLK lines.
Although SMBus specifications only require the SDA
and SCLK lines to pull down 350 µA (max.) with 0.4V
(max.) v olt age dro p, the MCP98 00/1/2 /3 is des igned to
meet 0.4V (m ax .) vo lt a ge d r op at 3 mA of current . Thi s
allow s the MCP980 0/1/2/3 to d rive lower v alues of pull-
up resistors and higher bus capacitance. In this
applic ation, all de vi ces on the bus m ust m eet th e sam e
pull-down current require m ents.
6.2 Typical Application
Microchip provides several microcontroller product
lines with Master Synchronous Serial Port Modules
(MSSP) that include I2C interface mode. This module
implements all master and slave functions and simpli-
fies the firmware development overhead. Figure 6-2
shows a typical application using the PIC16F737 as a
master to control other Microchip slave products, such
as EEPROM, fan speed controllers and the MCP980X
temperature sensor connected to the bus.
FIGURE 6-2: Multiple D evices on SMBus.
The ALER T o utput can be wire-O Red with a num ber of
other open-drain devices. In such applications, the
output needs to be programmed as an active-low
output. Most systems will require pull-up resistors for
this configuration.
6.3 Layout Considerations
The MCP9800/1/2/3 does not require any additional
components besides the Master controller in order to
measure temperature. However, it is recommended
that a decoupling capacitor of 0.1 µF to 1 µF be used
between the VDD and GND pins. A high-frequency
cera mi c ca paci tor is re co mm end ed . I t is ne c es sa ry fo r
the c apaci tor to be loc ate d as clo se a s po ssib le to the
power pins in order to provide effective noise
protection.
6.4 Thermal Considerations
The MCP9800/1/2/3 measures temperature by
monitoring the voltage of a diode located in the die. A
low impedance thermal path between the die and the
Printed Circuit Board (PCB) is provided by the pins.
Therefore, the MCP9800/1/2/3 effectively monitors the
temperat ure of the PCB. Howev er, the thermal pa th for
the ambient air is not as efficient because the plastic
device package functions as a thermal insulator.
A potential for self-heating errors can exist if the
MCP9800/1/2/3 SDA and SCLK communication lines
are heavily loaded with pull-ups. Typically, the self-
heating error is negligible because of the relatively
small current consumption of the MCP9800/1/2/3.
However, in order to maximize the temperature
accuracy, the SDA and SCLK pins need to be lightly
loaded.
PICmicro®
SDA
SCLK
VDD
R
R
Microcontroller
MCP980X
SDA SCLK
PIC16F737
Microcontroller
MCP980X
Temperature
Sensor
24LC01
EEPROM
TC654
Fan Speed
Controller
2004 Microchip Technology Inc. DS21909B-page 23
MCP9800/1/2/3
7.0 PACKAGING INFORMATION
7.1 Package Marking Information
Legend: XX...X Customer specific information*
YY Year code (last 2 digits of calendar year)
WW Week code (week of January 1 is week ‘01’)
NNN Alphanumeric traceability code
Note: In the event th e full Micro chip pa rt num ber cannot be ma rked on on e line, it will
be carried ov er to the ne xt li ne thus lim iti ng th e nu mb er of av ai lab le c hara ct ers
for customer specific information.
*Standard OTP marking consists of Microchip part number, year code, week code, and traceability code.
5-Lead SOT-23
XXNN
8-Lead SOI C (150 mil) Example:
XXXXXXXX
XXXXYYWW
NNN
GMCP9803
M/SN0425
256
8-Lead MSOP Example:
XXXXX
YWWNNN
G9803M
425256
Example:
Part Number MCP9800 Part Number MCP9802
MCP9800A0T-M/OTG LDNN MCP9802A0T-M/OTG JKNN
MCP9800A5T-M/OTG LJNN MCP9802A5T-M/OTG JRNN
MCP9800/1/2/3
DS21909B-page 24 2004 Microchip Technology Inc.
5-Lead Plastic Small Outline Transistor (OT) (SOT-23)
10501050
β
Mold Draft Angle Bottom
10501050
α
Mold Draft Angle Top
0.500.430.35.020.017.014BLead Width
0.200.150.09.008.006.004
c
Lead Thickness
10501050
φ
Foot Angle
0.550.450.35.022.018.014LFoot Length
3.102.952.80.122.116.110DOverall Length
1.751.631.50.069.064.059E1Molded Package Width
3.002.802.60.118.110.102EOverall Width
0.150.080.00.006.003.000A1Standoff
1.301.100.90.051.043.035A2Molded Package Thickness
1.451.180.90.057.046.035AOverall Height
1.90.075
p1
Outside lead pitch (basic)
0.95.038
p
Pitch
55
n
Number of Pins
MAXNOMMINMAXNOMMINDimension Limits
MILLIMETERSINCHES*Units
1
p
D
B
n
E
E1
L
c
β
φ
α
A2
A
A1
p1
exceed .005" (0.127mm) per side.
Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not
Notes:
EIAJ Equivalent: SC-74A
Drawing No. C04-091
*Controlling Parameter
2004 Microchip Technology Inc. DS21909B-page 25
MCP9800/1/2/3
8-Lead Plastic Micro Small Outline Package (MS) (MSOP)
D
A
A1
L
c
(F)
α
A2
E1
E
p
B
n 1
2
φ
β
Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not
.037 REFFFootprint (Reference)
exceed .010" (0.254mm) per side.
Notes:
Drawing No. C04-111
*Controlling Parameter
Mold Draft Angle Top
Mold Draft Angle Bottom
Foot Angle
Lead Width
Lead Thickness
β
α
c
B
φ
.003
.009
.006
.012
Dimension Limits
Overall Height
Molded Package Thickness
Molded Package Width
Overall Length
Foot Length
Standoff
Overall Width
Number of Pins
Pitch
A
L
E1
D
A1
E
A2
.016 .024
.118 BSC
.118 BSC
.000
.030
.193 TYP.
.033
MIN
p
n
Units
.026 BSC
NOM
8
INCHES
0.95 REF
-
-
.009
.016
0.08
0.22
0.23
0.40
MILLIMETERS*
0.65 BSC
0.85
3.00 BSC
3.00 BSC
0.60
4.90 BSC
.043
.031
.037
.006
0.40
0.00
0.75
MIN
MAX NOM
1.10
0.80
0.15
0.95
MAX
8
--
-
15° -
15° -
JEDEC Equivalent: MO-187
-
-
-
15°
15°
--
--
MCP9800/1/2/3
DS21909B-page 26 2004 Microchip Technology Inc.
8-Lead Plastic Small Outline (SN) – Narrow, 150 mil Body (SOIC)
Foot A ngle φ048048
1512015120
β
Mold Draft Angle Bottom 1512015120
α
Mold Draft Angle Top 0.510.420.33.020.017.013BLead Width 0.250.230.20.010.009.008
c
Lead Thickness
0.760.620.48.030.025.019LFoot Length 0.510.380.25.020.015.010hChamfer Distance 5.004.904.80.197.193.189DOverall Length 3.993.913.71.157.154.146E1Molded Pa ckag e Width 6.206.025.79.244.237.228EOverall Width 0.250.180.10.010.007.004A1Standoff § 1.551.421.32.061.056.052A2Molded Packag e Thickness 1.751.551.35.069.061.053AOverall Height 1.27.050
p
Pitch 88
n
Numb er of Pin s MAXNOMMINMAXNOMMINDimension Limits MILLIMETERSINCHES*Units
2
1
D
n
p
B
E
E1
h
L
β
c
45°
φ
A2
α
A
A1
* Controlling Parameter
Notes:
Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed
.010” (0.254mm) per side.
JEDEC Equivalent: MS-012
Drawing No. C04-057
§ Significant Characteristic
2004 Microchip Technology Inc. DS21909B-page 27
MCP9800/1/2/3
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
Sales and Support
PART NO. –X /XX
PackageTemperature
Range
Device
Device: MCP9800: Temperature Sensor
MCP9801: Temperature Sensor
MCP9802: Temperature Sensor
MCP9803: Temperature Sensor
A0 = Slave address set to ‘000
A5 = Slave address set to ‘101
Tape and Reel: = Blank
T = Tape and Reel
Temperature
Range: M= -55
°C to +125°C
Package: OT = Plastic Small Outline Transistor (SOT-23), 5-lead
MS = Plastic Micro Small Outline (MSOP), 8-lead
SN = Plastic SOIC, (150 mil Body), 8-lead
PB Free: G = Lead Free devic e
Examples:
a) MCP9800A0T-M/OTG Slave address ‘000’,
Tape and Reel,
-55°C to +125°C, PB
Free SOT-23 package.
b) MCP9800A5T-M/OTG Slave address ‘101’,
Tape and Reel,
-55°C to +125°C, PB
Free SOT-23 package.
a) MCP9801-M/MSG -55°C to +125°C, PB
Free 8LD MSOP
package.
b) MCP9801T-M/MSG Tape and Reel, -55°C
to +125°C, PB Free
8LD MSOP package.
c) MCP9801-M/SNG -55°C to +125°C, PB
Free 8LD SOIC
package.
d) MCP9801T-M/SNG Tape and Reel, -55°C
to +125°C, PB Free
8LD SOIC package.
a) MCP9802A0T-M/OT Slave address ‘000’,
Tape and Reel, -55°C
to +125°C, SOT-23
package.
b) MCP9802A5T-M/OT Slave address ‘101’,
Tape and Reel, -55°C
to +125°C, SOT-23
package.
a) MCP9803-M/MSG -55°C to +125°C, PB
Free 8LD MSOP
package.
b) MCP9803T-M/MSG Tape and Reel, -55°C
to +125°C, PB Free
8LD MSOP package.
c) MCP9803-M/SNG -55°C to +125°C, PB
Free 8LD SOIC
package.
d) MCP9803T-M/SNG Tape and Reel, -55°C
to +125°C, PB Free
8LD SOIC package.
XX
Slave
Address
X
Tape & Reel
X
PB Free
Data Sh eets
Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and
recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:
1. Your local Microchip sales office
2. The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277
3. The Microchip Worldwide Site (www.microchip.com)
Please specify which device, revision of silicon and Dat a Sheet (include Literature #) you are using.
New Customer Notification System
Register on our web site (www.m icrochip.com ) to receive the most current information on our products.
MCP9800/1/2/3
DS21909B-page 28 2004 Microchip Technology Inc.
NOTES:
2004 Microchip Technology Inc. DS21909B-page 29
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR WAR-
RANTIES OF ANY KIN D WHETHER EXPRESS OR IMPLIED ,
WRITTEN OR ORAL, STATUTORY OR OTHERWISE,
RELATED TO THE INFORMATION, INCLUDING BUT NOT
LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE,
MERCHANTABILITY OR FITNESS FOR PURPOSE.
Microchip disclaims all liability arising from this information and
its use. U se of Microc hip’s products as critical com ponents in
life support systems is not authorized except with express
written approval by Microchip. No licenses are conveyed,
implicitly or otherwise, under any Microchip intellectual property
rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, micro ID, MPLAB, PIC, PICmicro,
PICSTART, PRO MATE, Po w erSmart, rfPIC, and
SmartShunt are registered trademark s of Microchip
Tec hnology Incorporated in the U.S.A. and other countries.
AmpLab, FilterLab, MX DE V, MXLAB, PICMASTER, SEEV AL,
SmartSensor and The Embedded Control Solutions Company
are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, dsPICDEM,
dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR,
FanSense, FlexROM, fuzzyLAB, In-Circuit Serial
Programming, ICSP, ICEPIC, Migratable Memory, MPA SM ,
MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net,
PICLAB, PICtail, PowerCal, PowerInfo, PowerMate,
PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial,
SmartTel and Total Endurance are trademarks of Microchip
Tec hnology Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2004, Microchip Technology Inco rporated, Pr inted in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Note the following details of the code protection feature on Microchip devices:
Microchip products meet the specification contained in their particular Microchip Data Sheet.
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in t he
intended manner and under normal conditions.
There are dishonest and p ossibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
Microchip is willing to work with the customer who is concerned about the integrity of their code.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.
Code protection is c onstantly evolving. We a t Microchip are commit ted to continuously improving the code protect ion f eatures of our
products. Attempts to break Microchip’ s code protection f eature may be a violati on of t he Digit al Millennium Copyright Act. If such act s
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Microchip received ISO/TS-16949:2002 quality system certification for
its worldwide headquarters, design and wafer fabrication facilities in
Chandler and Tempe, Arizona and Mountain View, California in
October 2003. The Company’s quality system processes and
procedures are for its PICmicro® 8-bit MCUs, KEELOQ® code hopping
devices, Serial EEPROMs, micro peripherals, nonvolat ile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS21909B-page 30 2004 Microchip Technology Inc.
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WORLDWIDE SALES AND SERVICE
09/27/04
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MCP9803T-M/MS MCP9803T-M/SN MCP9800A5T-M/OT MCP9801T-M/SN MCP9801T-M/MS MCP9800DM-DL2
MCP9802A5T-M/OT MCP9800DM-TS1