Table of Contents
1 Ratings....................................................................................5
1.1 Thermal handling ratings................................................. 5
1.2 Moisture handling ratings................................................ 5
1.3 ESD handling ratings.......................................................5
1.4 Voltage and current operating ratings............................. 5
2 General................................................................................... 6
2.1 AC electrical characteristics.............................................6
2.2 Nonswitching electrical specifications..............................6
2.2.1 Voltage and current operating requirements....... 6
2.2.2 LVD and POR operating requirements................7
2.2.3 Voltage and current operating behaviors.............8
2.2.4 Power mode transition operating behaviors........ 9
2.2.5 Power consumption operating behaviors............ 10
2.2.6 EMC radiated emissions operating behaviors.....16
2.2.7 Designing with radiated emissions in mind..........17
2.2.8 Capacitance attributes.........................................17
2.3 Switching specifications...................................................17
2.3.1 Device clock specifications..................................17
2.3.2 General switching specifications......................... 18
2.4 Thermal specifications.....................................................18
2.4.1 Thermal operating requirements......................... 19
2.4.2 Thermal attributes................................................19
3 Peripheral operating requirements and behaviors.................. 20
3.1 Core modules.................................................................. 20
3.1.1 SWD electricals .................................................. 20
3.1.2 JTAG electricals.................................................. 21
3.2 System modules.............................................................. 24
3.3 Clock modules................................................................. 24
3.3.1 MCG specifications..............................................24
3.3.2 IRC48M specifications.........................................27
3.3.3 Oscillator electrical specifications........................27
3.4 Memories and memory interfaces................................... 29
3.4.1 Flash electrical specifications..............................29
3.4.2 EzPort switching specifications........................... 31
3.5 Security and integrity modules........................................ 32
3.6 Analog............................................................................. 32
3.6.1 ADC electrical specifications............................... 32
3.6.2 CMP and 6-bit DAC electrical specifications....... 36
3.6.3 12-bit DAC electrical characteristics....................39
3.6.4 Voltage reference electrical specifications.......... 42
3.7 Timers..............................................................................43
3.8 Communication interfaces............................................... 43
3.8.1 DSPI switching specifications (limited voltage
range).................................................................. 44
3.8.2 DSPI switching specifications (full voltage
range).................................................................. 45
3.8.3 Inter-Integrated Circuit Interface (I2C) timing...... 47
3.8.4 UART switching specifications............................ 49
3.9 Kinetis Motor Suite.......................................................... 49
4 Dimensions............................................................................. 49
4.1 Obtaining package dimensions....................................... 49
5 Pinout......................................................................................50
5.1 KV31F Signal Multiplexing and Pin Assignments............50
5.2 Recommended connection for unused analog and
digital pins........................................................................54
5.3 KV31F Pinouts.................................................................55
6 Part identification.....................................................................57
6.1 Description.......................................................................57
6.2 Format............................................................................. 58
6.3 Fields............................................................................... 58
6.4 Example...........................................................................59
7 Terminology and guidelines.................................................... 59
7.1 Definitions........................................................................59
7.2 Examples.........................................................................59
7.3 Typical-value conditions.................................................. 60
7.4 Relationship between ratings and operating
requirements....................................................................60
7.5 Guidelines for ratings and operating requirements..........61
8 Revision History...................................................................... 61
4Kinetis KV31F 256 KB Flash, Rev. 7, 02/2016
Freescale Semiconductor, Inc.