Datasheet

Table Of Contents
DS13105 Rev 4 11/135
STM32WLE5J8/JB/JC Description
13
The devices also feature the standard and advanced communication interfaces listed below:
two USART (supporting LIN, smartcard, IrDA, modem control and ISO7816)
one low-power UART (LPUART)
three I2C (SMBus/PMBus)
two SPIs (up to 16 MHz, one supporting I
2
S)
semaphores for processor firmware process synchronization
The operating temperature/voltage ranges are
40 °C to +85 °C from a 1.8 V to 3.6 V power
supply. A comprehensive set of power-saving modes allows the design of low-power
applications.
The devices integrate a high-efficiency SMPS step-down converter and independent power
supplies for ADC, DAC and comparator analog inputs.
A V
BAT
dedicated supply allows the LSE 32.768 kHz oscillator, the RTC and the backup
registers to be backed up. The devices can maintain these functions even if the main V
DD
is
not present, through a CR2032-like battery, a supercap or a small rechargeable battery.
Table 2. Main features and peripheral counts
Feature STM32WLE5JCI6 STM32WLE5JBI6 STM32WLE5J8I6
CPU Arm
Cortex-M4
Maximum CPU frequency (MHz) 48
Flash memory density (Kbytes) 256 128 64
SRAM density
(Kbytes)
SRAM1 32 16 0
SRAM2 32 32 20
Radio
LoRa
Yes
(G)FSK
(G)MSK
BPSK
Radio power
amplifier
Low-output power
(up to 15 dBm)
Yes
High-output power
(up to 22 dBm)
Timer
General purpose 4
Low-power 3
SysTick 1
Communication
interface
SPI/I
2
S 2 (1 supporting I
2
S)
I
2
C3
USART 2
LPUART 1
Watchdog
Independent 1
Window 1
RTC (with wakeup counter) 1