STM32L432KB datasheet(10/149 Pages) STMICROELECTRONICS

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Description

STM32L432KB STM3L432KC

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DocID028798 Rev 2

Description

The STM32L432xx devices are the ultra-low-power microcontrollers based on the high-

performance ARM® Cortex®-M4 32-bit RISC core operating at a frequency of up to 80 MHz.

The Cortex-M4 core features a Floating point unit (FPU) single precision which supports all

ARM single-precision data-processing instructions and data types. It also implements a full

set of DSP instructions and a memory protection unit (MPU) which enhances application

security.

The STM32L432xx devices embed high-speed memories (Flash memory up to 256 Kbyte,

64 Kbyte of SRAM), a Quad SPI flash memories interface and an extensive range of

enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit

multi-AHB bus matrix.

The STM32L432xx devices embed several protection mechanisms for embedded Flash

memory and SRAM: readout protection, write protection, proprietary code readout

protection and Firewall.

The devices offer a fast 12-bit ADC (5 Msps), two comparators, one operational amplifier,

two DAC channels, a low-power RTC, one general-purpose 32-bit timer, one 16-bit PWM

timer dedicated to motor control, four general-purpose 16-bit timers, and two 16-bit low-

power timers.

In addition, up to 3 capacitive sensing channels are available.

They also feature standard and advanced communication interfaces.

•

Two I2Cs

•

Two SPIs

•

Two USARTs and one Low-Power UART.

•

One SAI (Serial Audio Interfaces)

•

One CAN

•

One USB full-speed device crystal less

•

One SWPMI (Single Wire Protocol Master Interface)

The STM32L432xx operates in the -40 to +85 °C (+105 °C junction), -40 to +105 °C

(+125 °C junction) and -40 to +125 °C (+130 °C junction) temperature ranges from a 1.71 to

3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-

power applications.

Some independent power supplies are supported: analog independent supply input for

ADC, DAC, OPAMPs and comparators.

The STM32L432xx family offers a single 32-pin package.

Table 1. STM32L432Kx family device features and peripheral counts

Peripheral

STM32L432Kx

Flash memory

256KB

SRAM

64KB

Quad SPI

Yes

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