Datasheet
Description STM32L431xx
14/200 DocID028800 Rev 1
Timers
Advanced
control
1 (16-bit)
General
purpose
2 (16-bit)
1 (32-bit)
Basic 2 (16-bit)
Low -power 2 (16-bit)
SysTick timer 1
Watchdog
timers
(independent,
window)
2
Comm.
interfaces
SPI 3 2
I
2
C32
USART
LPUART
3
1
2
1
SAI 1
CAN 1
SDMMC
Yes No
SWPMI Yes
RTC Yes
Tamper pins 3 2 2 1
Random generator Yes
GPIOs
Wakeup pins
83
5
52
4
38 or 39
(1)
3
26
2
Capacitive sensing
Number of channels
21 12 6 3
12-bit ADCs
Number of channels
1
16
1
16
1
10
1
10
12-bit DAC channels 2
Internal voltage reference
buffer
Yes
No
Analog comparator 2
Operational amplifiers 1
Max. CPU frequency 80 MHz
Operating voltage 1.71 to 3.6 V
Operating temperature
Ambient operating temperature: -40 to 85 °C / -40 to 105 °C / -40 to 125 °C
Junction temperature: -40 to 105 °C / -40 to 125 °C / -40 to 130 °C
Packages
LQFP100
UFBGA100
WLCSP64
LQFP64
UFBGA64
WLCSP49
LQFP48
UFQFPN48
UFQFPN32
1. For WLCSP49 package.
Table 2. STM32L431xx family device features and peripheral counts (continued)
Peripheral STM32L431Vx STM32L431Rx STM32L431Cx STM32L431Kx
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