Описание
The STM32L432KC devices are the ultra-low-power microcontrollers based on the highperformance 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 STM32L432KC 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 STM32L432KC 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 lowpower 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 STM32L432KC 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 lowpower 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.
- 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 Stop 2 with RTC
- 84 µA/MHz run mode
- Batch acquisition mode (BAM)
- 4 µs wakeup from Stop mode
- Brown out reset (BOR) in all modes except shutdown
- 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/1.25DMIPS/MHz (Dhrystone 2.1), 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
- RTC with HW calendar, alarms and calibration
- Up to 3 capacitive sensing channels
- 11x timers: 1x 16-bit advanced motor-control, 1x 32-bit and 2x 16-bit general purpose, 2x 16- bit basic, 2x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer
- Up to 26 fast I/Os, most 5 V-tolerant
- Memories
- Up to 256 KB single bank Flash, proprietary code readout protection
- 64 KB of SRAM including 16 KB with hardware parity check
- Quad SPI memory interface
- Rich analog peripherals (independent supply)
- 1× 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 µA/Msps
- 2x 12-bit DAC, low-power sample and hold
- 1x operational amplifier with built-in PGA
- 2x ultra-low-power comparators
