STM32L452VEY3PTR中文资料意法半导体数据手册PDF规格书

特性 Features

• Ultra-low-power with FlexPowerControl

– 1.71 V to 3.6 V power supply

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

– 145 nA in VBAT mode: supply for RTC and 32x32-bit backup registers

– 22 nA Shutdown mode (5 wakeup pins)

– 106 nA Standby mode (5 wakeup pins)

– 375 nA Standby mode with RTC

– 2.05 μA Stop 2 mode, 2.40 μA with RTC

– 84 μA/MHz run mode (LDO Mode)

– 36 μA/MHz run mode (@3.3 V SMPS 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

– 245 ULPBench® 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, audio, ADC

• Up to 83 fast I/Os, most 5 V-tolerant

• RTC with HW calendar, alarms and calibration

• Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors

• 12x timers: 1x 16-bit advanced motor-control, 1x 32-bit and 3x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer

• Memories

– Up to 512 KB single bank Flash, proprietary code readout protection

– 160 KB of SRAM including 32 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

– 1x 12-bit DAC, low-power sample and hold

– 1x operational amplifier with built-in PGA

– 2x ultra-low-power comparators

– Accurate 2.5 V or 2.048 V reference voltage buffered output

• 17x communication interfaces

– USB 2.0 full-speed crystal less solution with LPM and BCD

– 1x SAI (serial audio interface)

– 4x I2C FM+(1 Mbit/s), SMBus/PMBus

– 3x USARTs (ISO 7816, LIN, IrDA, modem)

– 1x UART (LIN, IrDA, modem)

– 1x LPUART

– 3x SPIs (4x SPIs with the Quad SPI)

– CAN (2.0B Active) and SDMMC interface

– 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™