STM32L451REI6 - ST Microelectronics

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

STM32L451REI6
Manufacturer

ST Microelectronics
ChipWorker Part#

CW132345334
Package

UFBGA
Description

Ultra-low-power with FPU ARM Cortex-M4 MCU 80MHz with 512 Kbytes Flash, DFSDM
Documentation

Datasheet

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STM32L451REI6 Specifications

Attribute	Attribute Value

Part Number	STM32L451REI6
Manufacturer	ST Microelectronics
ChipWorker Part#	CW132345334
Documentation	Datasheet
Number of Pins	64 Pin
Case/Package	UFBGA
Number of Positions	64 Position
RAM Memory Size	160 KB
Number of Bits	32 Bit
Number of ADCs	1 ADC
Number of Inputs and Outputs	52 Input IO
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Number of DACs	1 DAC
Supply Voltage (Max)	3.6 V
Supply Voltage (Min)	1.71 V
	expand all
Product Lifecycle Status	Active
Packaging	Tray
RoHS	RoHS Compliant
Lead-Free Status	Lead free
ECCN Code	3A991A2

Product Description

The STM32L451xx 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 STM32L451xx devices embed high-speed memories (Flash memory up to 512 Kbyte, 160 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 STM32L451xx 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, one DAC channel, 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.
They also feature standard and advanced communication interfaces.
**Key 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
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
174.5 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
15x communication interfaces
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™

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