Datasheet

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STM32L432KB STM32L432KC Description
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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, OPAMP 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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