ST STM32L432KBU6TR

ARM® Cortex®-M480MHz128KB（128K x 8）

Overview

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. 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.

Features

STM32L4 Series
Tape & Reel (TR) Package
80MHz Speed
CANbus, I²C, IrDA, LINbus, QSPI, SAI, SPI, SWPMI, UART/USART, USB Connectivity
26 Number of I/O
128KB (128K x 8) Program Memory Size
FLASH Program Memory Type
64K x 8 RAM Size
1.71V ~ 3.6V Voltage - Supply (Vcc/Vdd)
A/D 10x12b; D/A 2x12b Data Converters
Internal Oscillator Type
Surface Mount Mounting Type

Applications

? Ultra-low-power with FlexPowerControl

– 1.71 V to 3.6 V power supply

– -40 °C to 85/105/125 °C temperature range

– 8 nA Shutdown mode (2 wakeup pins)

– 28 nA Standby mode (2 wakeup pins)

– 280 nA Standby mode with RTC

– 1.0 μA Stop 2 mode, 1.28 μA with RTC

– 84 μA/MHz run mode

– Batch acquisition mode (BAM)

– 4 μs wakeup from Stop mode

– Brown out reset (BOR)

– Interconnect matrix

? Core: Arm? 32-bit Cortex?-M4 CPU with FPU,

Adaptive real-time accelerator (ART

Accelerator?) allowing 0-wait-state execution

from Flash memory, frequency up to 80 MHz,

MPU, 100DMIPS and DSP instructions

? Performance benchmark

– 1.25 DMIPS/MHz (Drystone 2.1)

– 273.55 CoreMark? (3.42 CoreMark/MHz @

80 MHz)

? Energy benchmark

– 176.7 ULPBench? score

? Clock Sources

– 32 kHz crystal oscillator for RTC (LSE)

– Internal 16 MHz factory-trimmed RC (±1%)

– Internal low-power 32 kHz RC (±5%)

– Internal multispeed 100 kHz to 48 MHz

oscillator, auto-trimmed by LSE (better than

±0.25 % accuracy)

– Internal 48 MHz with clock recovery

– 2 PLLs for system clock, USB, audio, ADC

 

STM32L432KBU6TR                    Applications

 read protection

write protection

 proprietary code read protection

Firewall