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STMicroelectronics Electronic Components Datasheet

STM32L476QE Datasheet

32-bit MCU + FPU

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STM32L476QE pdf
STM32L476xx
Ultra-low-power ARM® Cortex®-M4 32-bit MCU+FPU, 100DMIPS,
up to 1MB Flash, 128 KB SRAM, USB OTG FS, LCD, analog, audio
Data brief
Features
Ultra-low-power with FlexPowerControl
– 1.71 V to 3.6 V power supply
– -40 °C to 85/105/125 °C temperature range
300 nA in
32x32-bit
bVaBcAkTump oredgei:ssteurpsply
for
RTC
and
– 30 nA Shutdown mode (5 wakeup pins)
– 130 nA Standby mode (5 wakeup pins)
– 430 nA Standby mode with RTC
– 1.1 µA Stop 2 mode, 1.4 µA Stop 2 with
RTC
– 100 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 (Chrom-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
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)
– 3 PLLs for system clock, USB, audio, ADC
RTC with HW calendar, alarms and calibration
LCD 8 × 40 or 4 × 44 with step-up converter
Up to 24 capacitive sensing channels: support
touchkey, linear and rotary touch sensors
16x timers: 2x 16-bit advanced motor-control,
2x 32-bit and 5x 16-bit general purpose, 2x 16-
bit basic, 2x low-power 16-bit timers (available
in Stop mode), 2x watchdogs, SysTick timer
Up to 114 fast I/Os, most 5 V-tolerant, up to 14
I/Os with independent supply down to 1.08 V
LQFP144(20 × 20)
LQFP100(14 x 14)
LQFP64(10 x 10)
UFBGA132
(7 × 7)
WLCSP72
Memories
– Up to 1 MB Flash, 2 banks read-while-
write, proprietary code readout protection
– Up to 128 KB of SRAM including 32 KB
with hardware parity check
– External memory interface for static
memories supporting SRAM, PSRAM,
NOR and NAND memories
– Quad SPI memory interface
4x digital filters for sigma delta modulator
Rich analog peripherals (independent supply)
– 3× 12-bit ADC 5 MSPS, up to 16-bit with
hardware oversampling, 200 µA/MSPS
– 2x 12-bit DAC, low-power sample and hold
– 2x operational amplifiers with built-in PGA
– 2x ultra-low-power comparators
18x communication interfaces
– USB OTG 2.0 full-speed, LPM and BCD
– 2x SAIs (serial audio interface)
– 3x I2C FM+(1 Mbit/s), SMBus/PMBus
– 6x USARTs (ISO 7816, LIN, IrDA, modem)
– 3x SPIs (4x SPIs with the Quad SPI)
– CAN (2.0B Active) and SDMMC interface
– SWPMI single wire protocol master I/F
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™
Table 1. Device summary
Reference
Part number
STM32L476xx
STM32L476RG, STM32L476JG, STM32L476VG,
STM32L476QG, STM32L476ZG, STM32L476RE,
STM32L476JE, STM32L476VE, STM32L476QE,
STM32L476ZE, STM32L476RC, STM32L476VC
February 2015
DocID027459 Rev 2
For further information contact your local STMicroelectronics sales office.
1/103
www.st.com


STMicroelectronics Electronic Components Datasheet

STM32L476QE Datasheet

32-bit MCU + FPU

No Preview Available !

STM32L476QE pdf
Contents
Contents
STM32L476xx
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 ARM® Cortex®-M4 core with FPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 Adaptive real-time memory accelerator (ART Accelerator™) . . . . . . . . . 12
3.3 Memory protection unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4 Embedded Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.5 Embedded SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.6 Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.7 Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.8 Cyclic redundancy check calculation unit (CRC) . . . . . . . . . . . . . . . . . . . 16
3.9 Power supply management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.9.1 Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.9.2 Power supply supervisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.9.3 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.9.4 Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.9.5 Reset mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.9.6 VBAT operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.10 Interconnect matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.11 Clocks and startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.12 General-purpose inputs/outputs (GPIOs) . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.13 Direct memory access controller (DMA) . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.14 Interrupts and events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.14.1 Nested vectored interrupt controller (NVIC) . . . . . . . . . . . . . . . . . . . . . . 33
3.14.2 Extended interrupt/event controller (EXTI) . . . . . . . . . . . . . . . . . . . . . . 33
3.15 Analog to digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.15.1 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.15.2 Internal voltage reference (VREFINT) . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.15.3 VBAT battery voltage monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.16 Digital to analog converter (DAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
2/103
DocID027459 Rev 2


Part Number STM32L476QE
Description 32-bit MCU + FPU
Maker STMicroelectronics
Total Page 30 Pages
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