STM32L443VC數(shù)據(jù)手冊ST中文資料規(guī)格書

描述 Description

The STM32L443xx 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 STM32L443xx devices embed high-speed memories (256 Kbyte of Flash memory, 64 Kbyte of SRAM), a Quad SPI flash memories interface (available on all packages) 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 STM32L443xx 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, an internal voltage reference buffer, 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 21 capacitive sensing channels are available. The devices also embed an integrated LCD driver 8x40 or 4x44, with internal step-up converter.

They also feature standard and advanced communication interfaces.

特性 Features

? Ultra-low-power with FlexPowerControl
?1.71 V to 3.6 V power supply
?-40 °C to 85/105/125 °C temperature range
?200 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
?8 nA Shutdown mode (5 wakeup pins)
?28 nA Standby mode (5 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
?347 ULPMark? CP score
?121 ULPMark? PP score
? Clock Sources
?4 to 48 MHz crystal oscillator
?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
? Up to 83 fast I/Os, most 5 V-tolerant
? RTC with HW calendar, alarms and calibration
? LCD 8× 40 or 4× 44 with step-up converter
? Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors
? 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
? Memories
?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)
?1x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 μA/Msps
?2x 12-bit DAC output channels, low-power sample and hold
?1x operational amplifier with built-in PGA
?2x ultra-low-power comparators
? AES: 128/256-bit key encryption hardware accelerator
? 17x communication interfaces
?USB 2.0 full-speed crystal less solution with LPM and BCD
?1x SAI (serial audio interface)
?3x I2C FM+(1 Mbit/s), SMBus/PMBus
?4x USARTs (ISO 7816, LIN, IrDA, modem)
?1x LPUART (Stop 2 wake-up)
?3x SPIs (and 1x Quad SPI)
?CAN (2.0B Active) and SDMMC interface
?SWPMI single wire protocol master I/F
?IRTIM (Infrared interface)
? 14-channel DMA controller
? True random number generator
? CRC calculation unit, 96-bit unique ID
? Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell?
? All packages are ECOPACK2? compliant