MR256A08B
MR256A08B Rev. 6.5 3/2018
1
Copyright © 2018 Everspin Technologies
32K x 8 MRAM
The MR256A08B is a 262,144-bit magnetoresistive random access
memory (MRAM) device organized as 32,768 words of 8 bits. The
MR256A08B oers SRAM compatible 35ns read/write timing with un-
limited endurance.
Data is always non-volatile for greater than 20-years. Data is automatically protected on
power loss by low-voltage inhibit circuitry to prevent writes with voltage out of specication.
The MR256A08B is the ideal memory solution for applications that must permanently store
and retrieve critical data and programs quickly.
The MR256A08B is available in a small footprint 400-mil, 44-lead plastic small-outline TSOP
type-2 package, or an 8 mm x 8 mm, 48-pin ball grid array (BGA) package. (The 32-SOIC
package options is obsolete and no longer available for new orders.) All package footprints
are compatible with similar low-power SRAM products and other non-volatile RAM products.
The MR256A08B provides highly reliable data storage over a wide range of temperatures.
The product is oered with commercial temperature (0 to +70 °C) and industrial temperature
(-40 to +85 °C) range options.
FEATURES
BENEFITS
One memory replaces FLASH, SRAM, EEPROM and MRAM
in system for simpler, more ecient design
Improves reliability by replacing battery-backed SRAM
3.3 Volt power supply
Fast 35 ns read/write cycle
SRAM compatible timing
Native non-volatility
Unlimited read & write endurance
Data always non-volatile for >20 years at temperature
Commercial and industrial temperatures
All products meet MSL-3 moisture sensitivity level
RoHS-Compliant TSOP2 and BGA packages
INTRODUCTION
48-ball FBGA
44-pin TSOP2
RoHS
MR256A08B Rev. 6.5 3/2018
2
Copyright © 2018 Everspin Technologies
MR256A08B
TABLE OF CONTENTS
FEATURES .............................................................................................................................................1
BENEFITS ...............................................................................................................................................1
INTRODUCTION ...................................................................................................................................1
BLOCK DIAGRAM AND PIN ASSIGNMENTS .......................................................................................4
Figure 1 – MR256A08B Block Diagram.................................................................................................................. 4
Table 1 – MR256A08B Pin Functions...................................................................................................................... 4
Figure 2 – Pin Diagrams for Available Packages (Top View) 1 ...................................................................... 5
Table 2 – Operating Modes ....................................................................................................................................... 5
ELECTRICAL SPECIFICATIONS ............................................................................................................6
Absolute Maximum Ratings ...........................................................................................................6
Table 3 – Absolute Maximum Ratings ................................................................................................................... 6
OPERATING CONDITIONS ...................................................................................................................7
Table 4 – Operating Conditions ............................................................................................................................... 7
Power Up and Power Down Sequencing .......................................................................................8
Figure 3 – Power Up and Power Down Sequencing Timing Diagram ....................................................... 8
DC CHARACTERISTICS .........................................................................................................................9
Table 5 – DC Characteristics ...................................................................................................................................... 9
Table 6 – Power Supply Characteristics ..............................................................................................................10
TIMING SPECIFICATIONS ................................................................................................................. 11
Table 7 – Capacitance ...............................................................................................................................................11
Table 8 – AC Measurement Conditions ..............................................................................................................11
Figure 4 – Output Load Test Low and High ....................................................................................................... 11
Figure 5 – Output Load Test All Others ...............................................................................................................11
Read Mode .................................................................................................................................... 12
Table 9 – Read Cycle Timing ...................................................................................................................................12
MR256A08B
MR256A08B Rev. 6.5 3/2018
3
Copyright © 2018 Everspin Technologies
Figure 6 – Read Cycle 1 .............................................................................................................................................12
Figure 7 – Read Cycle 2 .............................................................................................................................................13
Write Mode .................................................................................................................................... 14
Table 10 – Write Cycle Timing 1 (W Controlled) ..............................................................................................14
Figure 8 – Write Cycle Timing 1 (W Controlled) ..............................................................................................15
Table 11 – Write Cycle Timing 2 (E Controlled) ................................................................................................16
Figure 9 – Write Cycle Timing 2 (E Controlled) ................................................................................................17
ORDERING INFORMATION ............................................................................................................... 18
Table 12 – Ordering Part Number System for Parallel I/O MRAM..............................................................18
Table 13 – MR256A08B Ordering Part Numbers 1 .......................................................................................... 19
PACKAGE OUTLINE DRAWINGS ....................................................................................................... 20
Figure 10 – 44-TSOP2 Package Outline...............................................................................................................20
Figure 11 – 48-BGA Package Outline ...................................................................................................................21
Figure 12 – 32-SOIC Package Outline 1 ..............................................................................................................22
REVISION HISTORY ........................................................................................................................... 23
HOW TO CONTACT US ....................................................................................................................... 24
TABLE OF CONTENTS CONT’D
MR256A08B Rev. 6.5 3/2018
4
Copyright © 2018 Everspin Technologies
MR256A08B
CHIP
ENABLE
BUFFER
OUTPUT
ENABLE
BUFFER
ADDRESS
BUFFER
WRITE
ENABLE
BUFFER
G
E
15
OUTPUT ENABLE
32K x 8 BIT
MEMORY
ARRAY
ROW
DECODER
COLUMN
DECODER
SENSE
AMPS
OUTPUT
BUFFER
WRITE
DRIVER
FINAL
WRITE
DRIVERS
WRITE ENABLE
W
A[14:0]
8
7
88
8
8
8
8
DQ[7:0]
Figure 1 – MR256A08B Block Diagram
Table 1 – MR256A08B Pin Functions
Signal
Name
Function
A Address Input
E Chip Enable
W Write Enable
G Output Enable
DQ Data I/O
VDD Power Supply
VSS Ground
DC Do Not Connect
NC No Connection - Pin 2, 40, 41,43 (TSOP2); Ball C2, C5, D3, F2, F5, G1, G2, G6, H1, H6 (BGA); Pin 9,
24, 31(SOIC) Reserved For Future Expansion
BLOCK DIAGRAM AND PIN ASSIGNMENTS
MR256A08B
MR256A08B Rev. 6.5 3/2018
5
Copyright © 2018 Everspin Technologies
123456
G A A A A
AAEB
DQ AA
DQ
DQ C
VSS
DQ
VDD D
VDD
DQ
VSS E
DQ
A
DQ F
NC
AA
WG
NC
A
AH
NCNC
NC
NC
DCDC
DCDC
A
DQ3
NC
NC
NC
NC
NC
VSS
VDD
A
A14
13
DC
Figure 2 – Pin Diagrams for Available Packages (Top View) 1
Table 2 – Operating Modes
E 1G 1W 1Mode VDD Current DQ[7:0] 2
H X X Not selected ISB1, ISB2 Hi-Z
L H H Output disabled IDDR Hi-Z
L L H Byte Read IDDR DOut
L X L Byte Write IDDW Din
Notes:
1. H = high, L = low, X = don’t care
2. Hi-Z = high impedance
48 Pin FBGA32 Pin SOIC 1
44 Pin TSOP2
A
A
A
A
VDD
E
VSS
W
A
A
A
DC
A
DC 22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44 DC
DC
A
G
VSS
A
VDD
DC
A
A
A
DC
DC
A
A
DC
NC NC
NC
NC
14
13
V
V
SS
DD
1
DC
2
A14
3
A12
4
A7
5
A6
6
A5
7
A4
8
A3
9
NC
10
A2
11
A1
12
A0
13
DQ0
14
DQ1
VDD
NC
W
A13
A8
A9
A11
G
NC
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
15
DQ2
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VSS
Note:
1. The 32-SOIC package is obsolete and shown for legacy reference only. This package option is no longer
available for new orders.
MR256A08B Rev. 6.5 3/2018
6
Copyright © 2018 Everspin Technologies
MR256A08B
ELECTRICAL SPECIFICATIONS
This device contains circuitry to protect the inputs against damage caused by high static voltages or
electric elds; however, it is advised that normal precautions be taken to avoid application of any voltage
greater than maximum rated voltages to these high-impedance (Hi-Z) circuits.
The device also contains protection against external magnetic elds. Precautions should be taken to avoid
application of any magnetic eld more intense than the maximum eld intensity specied in the maximum
ratings. 1
Parameter Symbol Value Unit
Supply voltage 2VDD -0.5 to 4.0 V
Voltage on an pin 2VIN -0.5 to VDD + 0.5 V
Output current per pin IOUT ±20 mA
Package power dissipation 3PD0.600 W
Temperature under bias
MR256A08B (Commercial)
MR256A08BC (Industrial) TBIAS
-10 to 85
-45 to 95
°C
Storage Temperature Tstg -55 to 150 °C
Lead temperature during solder (3 minute max) TLead 260 °C
Maximum magnetic eld during write Hmax_write 2000 A/m
Maximum magnetic eld during read or standby Hmax_read 8000 A/m
Notes:
1. Permanent device damage may occur if absolute maximum ratings are exceeded. Functional oper-
ation should be restricted to recommended operating conditions. Exposure to excessive voltages
or magnetic elds could aect device reliability.
2. All voltages are referenced to VSS.
3. Power dissipation capability depends on package characteristics and use environment.
Table 3 – Absolute Maximum Ratings
Absolute Maximum Ratings
MR256A08B
MR256A08B Rev. 6.5 3/2018
7
Copyright © 2018 Everspin Technologies
Parameter Symbol Min Typical Max Unit
Power supply voltage VDD 3.0 13.3 3.6 V
Write inhibit voltage VWI 2.5 2.7 3.0 1 V
Input high voltage VIH 2.2 - VDD + 0.3 2 V
Input low voltage VIL -0.5 3- 0.8 V
Temperature under bias
MR256A08B (Commercial)
MR256A08BC (Industrial)
TA0
-40
70
85
°C
Notes:
1. There is a 2 ms startup time once VDD exceeds VDD,(min). See “Power Up and Power Down Sequencing Timing Diagram.
2. VIH(max) = VDD + 0.3 VDC ; VIH(max) = VDD + 2.0 VAC (pulse width ≤ 10 ns) for I ≤ 20.0 mA.
3. VIL(min) = -0.5 VDC ; VIL(min) = -2.0 VAC (pulse width ≤ 10 ns) for I ≤ 20.0 mA.
Table 4 – Operating Conditions
OPERATING CONDITIONS
MR256A08B Rev. 6.5 3/2018
8
Copyright © 2018 Everspin Technologies
MR256A08B
Figure 3 – Power Up and Power Down Sequencing Timing Diagram
BROWNOUT or POWER LOSS
NORMAL
OPERATION
VDD
READ/WRITE
INHIBITED
VWI
2 ms
READ/WRITE
INHIBITED
VIH
STARTUP
NORMAL
OPERATION
2 ms
E
W
RECOVER
VIH
The MRAM is protected from write operations whenever VDD is less than VWI. As soon as VDD exceeds VDD(min),
there is a startup time of 2 ms before read or write operations can start. This time allows memory power sup-
plies to stabilize.
The E and W control signals should track VDD on power up to VDD- 0.2 V or VIH (whichever is lower) and remain
high for the startup time. In most systems, this means that these signals should be pulled up with a resistor
so that signal remains high if the driving signal is Hi-Z during power up. Any logic that drives E and W should
hold the signals high with a power-on reset signal for longer than the startup time.
During power loss or brownout where VDD goes below VWI, writes are protected and a startup time must be
observed when power returns above VDD(min).
Power Up and Power Down Sequencing
MR256A08B
MR256A08B Rev. 6.5 3/2018
9
Copyright © 2018 Everspin Technologies
Parameter Symbol Min Typical Max Unit
Input leakage current Ilkg(I) - - ±1 μA
Output leakage current Ilkg(O) - - ±1 μA
Output low voltage
(IOL = + 4 mA)
(IOL = + 100 μA)
VOL - - 0.4
VSS + 0.2
V
Output high voltage
(IOL = - 4 mA)
(IOL = - 100 μA)
VOH 2.4
VDD - 0.2
- - V
Table 5 – DC Characteristics
DC CHARACTERISTICS
MR256A08B Rev. 6.5 3/2018
10
Copyright © 2018 Everspin Technologies
MR256A08B
Table 6 – Power Supply Characteristics
Parameter Symbol Typical Max Unit
AC active supply current - read modes 1
(IOUT= 0 mA, VDD= max) IDDR 25 30 mA
AC active supply current - write modes 1
(VDD= max)
MR256A08B (Commercial)
MR256A08BC (Industrial)
IDDW 55
55
65
75
mA
AC standby current
(VDD= max, E = VIH)
no other restrictions on other inputs
MR256A08B (Commercial)
MR256A08BC (Industrial)
ISB1 6
6
7
8mA
CMOS standby current
(E ≥ VDD - 0.2 V and VIn VSS + 0.2 V or ≥ VDD - 0.2 V)
(VDD = max, f = 0 MHz)
MR256A08B (Commercial)
MR256A08BC (Industrial)
ISB2 5
5
6
7mA
Notes:
1. All active current measurements are measured with one address transition per cycle and at minimum cycle time.
MR256A08B
MR256A08B Rev. 6.5 3/2018
11
Copyright © 2018 Everspin Technologies
TIMING SPECIFICATIONS
Table 7 – Capacitance
Parameter 1Symbol Typical Max Unit
Address input capacitance CIn - 6 pF
Control input capacitance CIn - 6 pF
Input/Output capacitance CI/O - 8 pF
Notes:
1. f = 1.0 MHz, dV = 3.0 V, TA = 25 °C, periodically sampled rather than 100% tested.
Table 8 – AC Measurement Conditions
Figure 4 – Output Load Test Low and High
Figure 5 – Output Load Test All Others
Parameter Value Unit
Logic input timing measurement reference level 1.5 V
Logic output timing measurement reference level 1.5 V
Logic input pulse levels 0 or 3.0 V
Input rise/fall time 2 ns
Output load for low and high impedance parameters See Figure 4
Output load for all other timing parameters See Figure 5
V
Output
L= 1.5 V
RL= 50 Ω
ZD= 50 Ω
Output
435 Ω
590 Ω
5 pF
3.3 V
MR256A08B Rev. 6.5 3/2018
12
Copyright © 2018 Everspin Technologies
MR256A08B
Parameter 1Symbol Min Max Unit
Read cycle time tAVAV 35 - ns
Address access time tAVQV - 35 ns
Enable access time 2 tELQV - 35 ns
Output enable access time tGLQV - 15 ns
Output hold from address change tAXQX 3 - ns
Enable low to output active 3 tELQX 3 - ns
Output enable low to output active 3 tGLQX 0 - ns
Enable high to output Hi-Z 3 tEHQZ 0 15 ns
Output enable high to output Hi-Z 3 tGHQZ 0 10 ns
Notes:
1. W is high for read cycle. Power supplies must be properly grounded and decoupled, and bus contention conditions must be
minimized or eliminated during read or write cycles.
2. Addresses valid before or at the same time E goes low.
3. This parameter is sampled and not 100% tested. Transition is measured ±200 mV from the steady-state voltage.
Table 9 – Read Cycle Timing
Read Mode
Figure 6 – Read Cycle 1
A (ADDRESS)
Q (DATA OUT)
tAVAV
tAXQX
tAVQV
Previous Data Valid Data Valid
MR256A08B
MR256A08B Rev. 6.5 3/2018
13
Copyright © 2018 Everspin Technologies
Figure 7 – Read Cycle 2
A (ADDRESS)
E (CHIP ENABLE)
G (OUTPUT ENABLE)
Q (DATA OUT)
Data Valid
tAVAV
tAVQV
tELQV
tELQX
tGHQZ
tEHQZ
tGLQV
tGLQX
MR256A08B Rev. 6.5 3/2018
14
Copyright © 2018 Everspin Technologies
MR256A08B
Table 10 – Write Cycle Timing 1 (W Controlled)
Parameter 1Symbol Min Max Unit
Write cycle time 2 tAVAV 35 - ns
Address set-up time tAVWL 0 - ns
Address valid to end of write (G high) tAVWH 18 - ns
Address valid to end of write (G low) tAVWH 20 - ns
Write pulse width (G high)
tWLWH
tWLEH 15 - ns
Write pulse width (G low)
tWLWH
tWLEH 15 - ns
Data valid to end of write tDVWH 10 - ns
Data hold time tWHDX 0 - ns
Write low to data Hi-Z 3 tWLQZ 0 12 ns
Write high to output active 3 tWHQX 3 - ns
Write recovery time tWHAX 12 - ns
Notes:
1. All writes occur during the overlap of E low and W low. Power supplies must be properly grounded and decoupled and bus
contention conditions must be minimized or eliminated during read and write cycles. If G goes low at the same time or
after W goes low, the output will remain in a high impedance state. After W or E has been brought high, the signal must re-
main in steady-state high for a minimum of 2 ns. The minimum time between E being asserted low in one cycle to E being
asserted low in a subsequent cycle is the same as the minimum cycle time allowed for the device.
2. All write cycle timings are referenced from the last valid address to the rst transition address.
3. This parameter is sampled and not 100% tested. Transition is measured ±200 mV from the steady-state voltage. At any
given voltage or temperature, tWLQZ(max) < tWHQX(min)
Write Mode
MR256A08B
MR256A08B Rev. 6.5 3/2018
15
Copyright © 2018 Everspin Technologies
A (ADDRESS)
E (CHIP ENABLE)
W (WRITE ENABLE)
Q (DATA OUT)
D (DATA IN)
t
AVAV
t
AVWH
t
WHAX
t
WLEH
t
WHDX
t
DVWH
t
WHQX
t
AVWL
t
Hi-Z Hi-Z
WLQZ
t
WLWH
Data Valid
Figure 8 – Write Cycle Timing 1 (W Controlled)
MR256A08B Rev. 6.5 3/2018
16
Copyright © 2018 Everspin Technologies
MR256A08B
Table 11 – Write Cycle Timing 2 (E Controlled)
Parameter 1Symbol Min Max Unit
Write cycle time 2 tAVAV 35 - ns
Address set-up time tAVEL 0 - ns
Address valid to end of write (G high) tAVEH 18 - ns
Address valid to end of write (G low) tAVEH 20 - ns
Enable to end of write (G high)
tELEH
tELWH 15 - ns
Enable to end of write (G low) 3tELEH
tELWH 15 - ns
Data valid to end of write tDVEH 10 - ns
Data hold time tEHDX 0 - ns
Write recovery time tEHAX 12 - ns
Notes:
1. All writes occur during the overlap of E low and W low. Power supplies must be properly grounded and decoupled and bus
contention conditions must be minimized or eliminated during read and write cycles. If G goes low at the same time or after
W goes low, the output will remain in a high impedance state. After W or E has been brought high, the signal must remain
in steady-state high for a minimum of 2 ns. The minimum time between E being asserted low in one cycle to E being as-
serted low in a subsequent cycle is the same as the minimum cycle time allowed for the device.
2. All write cycle timings are referenced from the last valid address to the rst transition address.
3. If E goes low at the same time or after W goes low, the output will remain in a high-impedance state. If E goes high at the
same time or before W goes high, the output will remain in a high-impedance state.
MR256A08B
MR256A08B Rev. 6.5 3/2018
17
Copyright © 2018 Everspin Technologies
Figure 9 – Write Cycle Timing 2 (E Controlled)
A (ADDRESS)
E (CHIP ENABLE)
W (WRITE ENABLE)
Q (DATA OUT)
D (DATA IN)
tAVAV
tAVEH tEHAX
tELEH
tEHDX
tDVEH
tAVEL
Hi-Z
tELWH
Data Valid
MR256A08B Rev. 6.5 3/2018
18
Copyright © 2018 Everspin Technologies
MR256A08B
ORDERING INFORMATION
Table 12 – Ordering Part Number System for Parallel I/O MRAM
Memory Density Type I/O Width Rev. Temp Package Speed Packing Grade
Example Ordering Part Number MR 256 A 08 B C MA 35 R
MRAM MR
256 Kb 256
1 Mb 0
4 Mb 2
16 Mb 4
Async 3.3v
A
Async 3.3v Vdd and 1.8v Vddq
D
Async 3.3v Vdd and 1.8v Vddq with 2.7v min. Vdd
DL
8-bit 08
16-bit 16
Rev A A
Rev B B
Commercial 0 to 70°C Blank
Industrial -40 to 85°C C
Extended -40 to 105°C V
AEC Q-100 Grade 1 -40 to 125°C M
44-TSOP-2 YS
48-FBGA MA
16-SOIC SC
32-SOIC SO
35 ns 35
45 ns 45
Tray Blank
Tape and Reel R
Engineering Samples ES
Customer Samples Blank
Mass Producon Blank
MR256A08B
MR256A08B Rev. 6.5 3/2018
19
Copyright © 2018 Everspin Technologies
Table 13 – MR256A08B Ordering Part Numbers 1
Temp Grade Temp Package Shipping Ordering Part Number
Commercial 0 to +70 °C
44-TSOP2 Tray MR256A08BYS35
Tape and Reel MR256A08BYS35R
48-BGA Tray MR256A08BMA35
Tape and Reel MR256A08BMA35R
32-SOIC 1 Tray MR256A08BSO35 Obsolete
Tape and Reel MR256A08BSO35R Obsolete
Industrial -40 to +85 °C
44-TSOP2 Tray MR256A08BCYS35
Tape and Reel MR256A08BCYS35R
48-BGA Tray MR256A08BCMA35
Tape and Reel MR256A08BCMA35R
32-SOIC 1 Tray MR256A08BCSO35 Obsolete
Tape and Reel MR256A08BCSO35R Obsolete
1 The 32-SOIC package option is obsolete and no longer available. See PCN02895 here.
MR256A08B Rev. 6.5 3/2018
20
Copyright © 2018 Everspin Technologies
MR256A08B
Figure 10 – 44-TSOP2 Package Outline
PACKAGE OUTLINE DRAWINGS
Not To Scale
1. Dimensions and tolerances per ASME Y14.5M - 1994.
2. Dimensions in Millimeters.
3. Dimensions do not include mold protrusion.
4. Dimension does not include DAM bar protrusions.
5. DAM Bar protrusion shall not cause the lead width to
exceed 0.58.
44
MR256A08B
MR256A08B Rev. 6.5 3/2018
21
Copyright © 2018 Everspin Technologies
Figure 11 – 48-BGA Package Outline
TOP VIEW
BOTTOM VIEW SIDE VIEW
0.41
0.31 0.32
0.22
Not To Scale
1. Dimensions in Millimeters.
2. Dimensions and tolerances per ASME Y14.5M - 1994.
3. Maximum solder ball diameter measured parallel to DATUM A
4. DATUM A, the seating plane is determined by the spherical crowns
of the solder balls.
5.
surface of package.
Obsolete
MR256A08B Rev. 6.5 3/2018
22
Copyright © 2018 Everspin Technologies
Figure 12 – 32-SOIC Package Outline 1
Unit A B C D E F G H I J K
mm - Min
- Max
20.574
20.878
1.00
1.50
0.355
0.508
0.66
0.81
0.101
0.254
2.286
2.540
Radius
0.101
0.533
1.041
0.152
0.304
7.416
7.594
10.287
10.642
inch - Min
- Max
0.810
0.822
0.04
0.06
0.14
0.02
0.026
0.032
0.004
0.010
0.09
0.10
Radius
0.0040
0.021
0.041
0.006
0.012
0.292
0.299
0.405
0.419
1 16
32 17
PIN 1 ID
A
BC
D
E F
G
H
J
K
I
Reference JEDEC MO-119
Note:
1. The 32-SOIC package is obsolete and shown for legacy reference only. This package option is no longer
available for new orders.
MR256A08B
MR256A08B Rev. 6.5 3/2018
23
Copyright © 2018 Everspin Technologies
Revision Date Description of Change
0 Sept 12, 2008 Initial Advance Information Release
1 Mar 25, 2009 Add Industrial and Automotive Temperature Options
2 August 16, 2011 Removed Automotive temperature options. Included SOIC package.
Revised formatting
3 October 28, 2011
Changed TSOP-II to TSOP2. Changed logo to new EST Logo. Revisions to
Available Parts, Table 4.1: Added Industrial Temp Grade option in SOIC
package. Deleted Tape & Reel pack option for all SOIC packaged parts.
4 Dec 9, 2011
Figure 2.1 cosmetic update. Figure 5.2 BGA package outline drawing
revised for package ball size. Revisions to ISB1, ISB2 and IDDW for Indus-
trial Grade options in Table 2.4.
5 July 9, 2013 MR256A08BCSO35 removed Preliminary status. Now MP.
6 October 11, 2013 Added Tape and Reel shipping option for SOIC packaged products. Re-
formatted to current standards.
6.1 May 19, 2015 Revised Everspin contact information.
6.2 June 11, 2015 Corrected Japan Sales Oce telephone number.
6.3 July 20, 2015 32-SOIC package options Not Recommended for New Designs.
6.4 October 17, 2015 32-SOIC package options are obsolete and no longer available.
6.5 March 23, 2018 Updated the Contact Us table
REVISION HISTORY
MR256A08B Rev. 6.5 3/2018
24
Copyright © 2018 Everspin Technologies
MR256A08B
Everspin Technologies, Inc.
Information in this document is provided solely to enable system and
software implementers to use Everspin Technologies products. There
are no express or implied licenses granted hereunder to design or
fabricate any integrated circuit or circuits based on the information
in this document. Everspin Technologies reserves the right to make
changes without further notice to any products herein. Everspin makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does Everspin Technologies as-
sume any liability arising out of the application or use of any product or
circuit, and specically disclaims any and all liability, including without
limitation consequential or incidental damages. Typical” parameters,
which may be provided in Everspin Technologies data sheets and/
or specications can and do vary in dierent applications and actual
performance may vary over time. All operating parameters including
Typicals” must be validated for each customer application by cus-
tomers technical experts. Everspin Technologies does not convey any
license under its patent rights nor the rights of others. Everspin Tech-
nologies products are not designed, intended, or authorized for use as
components in systems intended for surgical implant into the body, or
other applications intended to support or sustain life, or for any other
application in which the failure of the Everspin Technologies product
could create a situation where personal injury or death may occur.
Should Buyer purchase or use Everspin Technologies products for any
such unintended or unauthorized application, Buyer shall indemnify
and hold Everspin Technologies and its ocers, employees, subsidiar-
ies, aliates, and distributors harmless against all claims, costs, dam-
ages, and expenses, and reasonable attorney fees arising out of, directly
or indirectly, any claim of personal injury or death associated with such
unintended or unauthorized use, even if such claim alleges that Ever-
spin Technologies was negligent regarding the design or manufacture
of the part. Everspin™ and the Everspin logo are trademarks of Everspin
Technologies, Inc. All other product or service names are the property
of their respective owners.
Copyright © Everspin Technologies, Inc. 2018
HOW TO CONTACT US
How to Reach Us:
Home Page:
www.everspin.com
World Wide Information Request
WW Headquarters - Chandler, AZ
5670 W. Chandler Blvd., Suite 100
Chandler, Arizona 85226
Tel: +1-877-480-MRAM (6726)
Local Tel: +1-480-347-1111
Fax: +1-480-347-1175
support@everspin.com
orders@everspin.com
sales@everspin.com
Europe, Middle East and Africa
Everspin Europe Support
support.europe@everspin.com
Japan
Everspin Japan Support
support.japan@everspin.com
Asia Pacic
Everspin Asia Support
support.asia@everspin.com
Filename:
EST00355_MR256A08B_Datasheet_Rev6.5 032318