STM32WLE4JC datasheet(12/146 Pages) STMICROELECTRONICS

12 / 146 page

Description

STM32WLE5/E4xx

12/146

DS13105 Rev 9

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 I2S)

•

semaphores for processor firmware process synchronization

The operating temperature/voltage ranges are –40 °C to +105 °C (+85 °C with radio)(a) 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 VBAT 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 VDD is

not present, through a CR2032-like battery, a supercap or a small rechargeable battery.

a. Devices with suffix 6 operate up to 85 °C. Devices with suffix 7 can operate up to 105 °C except radio.

Table 2. Main features and peripheral counts

Feature

STM32WLE5Cx

STM32WLE4Cx

STM32WLE5Jx

STM32WLE4Jx

STM32WLE5Ux

STM32WLE4Ux

CPU

Arm Cortex-M4

Maximum CPU frequency (MHz)

Flash memory density (Kbytes)

256/128/64

SRAM density (Kbytes)

SRAM1

32/16/0

SRAM2

32/32/20

Radio

LoRa

Available on STM32WLE5xx devices.

Not available on STM32WLE4xx devices

(G)FSK

Yes

(G)MSK

BPSK

Radio power amplifier

Low output power (up to

15 dBm)

Yes

High output power (up to

22 dBm)

Timer

General purpose

Low-power

SysTick

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