STM32L476MEY6XXX datasheet, PDF - EEWORLD Datasheet

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STM32L476MEY6XXX: Description32-BIT, FLASH, 80MHz, RISC MICROCONTROLLER, PBGA81, 4.4084 X 3.7594 MM, 0.40 MM PITCH, ROHS COMPLIANT, WLCSP-81; CategoryThe embedded processor and controller Microcontrollers and processors; File Size2MB，232 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/; Environmental Compliance

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STM32L476MEY6XXX Overview

32-BIT, FLASH, 80MHz, RISC MICROCONTROLLER, PBGA81, 4.4084 X 3.7594 MM, 0.40 MM PITCH, ROHS COMPLIANT, WLCSP-81

STM32L476MEY6XXX Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	STMicroelectronics
package instruction	VFBGA,
Reach Compliance Code	compliant
Has ADC	YES
Address bus width
bit size	32
maximum clock frequency	48 MHz
DAC channel	YES
DMA channel	YES
External data bus width
JESD-30 code	R-PBGA-B81
length	4.4084 mm
Number of I/O lines	65
Number of terminals	81
On-chip program ROM width	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
PWM channel	YES
Package body material	PLASTIC/EPOXY
encapsulated code	VFBGA
Package shape	RECTANGULAR
Package form	GRID ARRAY, VERY THIN PROFILE, FINE PITCH
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
RAM (bytes)	131072
rom(word)	524288
ROM programmability	FLASH
Maximum seat height	0.585 mm
speed	80 MHz
Maximum supply voltage	3.6 V
Minimum supply voltage	1.71 V
Nominal supply voltage	3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal form	BALL
Terminal pitch	0.4 mm
Terminal location	BOTTOM
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3.7594 mm
uPs/uCs/peripheral integrated circuit type	MICROCONTROLLER, RISC
Base Number Matches	1

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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

Datasheet

-

production data

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 V

BAT

mode: supply for RTC and

32x32-bit backup registers

– 30 nA Shutdown mode (5 wakeup pins)

– 120 nA Standby mode (5 wakeup pins)

– 420 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 (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: 2 x 16-bit advanced motor-control,

2 x 32-bit and 5 x 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

WLCSP81

•

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

STM32L476RG, STM32L476JG, STM32L476MG,

STM32L476ME, STM32L476VG, STM32L476QG,

STM32L476ZG, STM32L476RE, STM32L476JE,

STM32L476VE, STM32L476QE, STM32L476ZE,

STM32L476RC, STM32L476VC

STM32L476xx

December 2015

This is information on a product in full production.

DocID025976 Rev 4

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www.st.com

Contents

STM32L476xx

Contents

1

2

3

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.1

3.2

3.3

3.4

3.5

3.6

3.7

3.8

3.9

ARM

®

Cortex

®

-M4 core with FPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Adaptive real-time memory accelerator (ART Accelerator™) . . . . . . . . . 16

Memory protection unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Embedded Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Embedded SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Cyclic redundancy check calculation unit (CRC) . . . . . . . . . . . . . . . . . . . 19

Power supply management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.9.1

3.9.2

3.9.3

3.9.4

3.9.5

3.9.6

Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Power supply supervisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Reset mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

VBAT operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.10

3.11

3.12

3.13

3.14

Interconnect matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Clocks and startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

General-purpose inputs/outputs (GPIOs) . . . . . . . . . . . . . . . . . . . . . . . . . 35

Direct memory access controller (DMA) . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Interrupts and events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.14.1

3.14.2

Nested vectored interrupt controller (NVIC) . . . . . . . . . . . . . . . . . . . . . . 36

Extended interrupt/event controller (EXTI) . . . . . . . . . . . . . . . . . . . . . . 36

Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Internal voltage reference (VREFINT) . . . . . . . . . . . . . . . . . . . . . . . . . . 38

VBAT battery voltage monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.15

Analog to digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.15.1

3.15.2

3.15.3

3.16

Digital to analog converter (DAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

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Contents

3.17

3.18

3.19

3.20

3.21

3.22

3.23

3.24

Voltage reference buffer (VREFBUF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Comparators (COMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Operational amplifier (OPAMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Touch sensing controller (TSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Liquid crystal display controller (LCD) . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Digital filter for Sigma-Delta Modulators (DFSDM) . . . . . . . . . . . . . . . . . . 41

Random number generator (RNG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Timers and watchdogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

3.24.1

3.24.2

3.24.3

3.24.4

3.24.5

3.24.6

3.24.7

Advanced-control timer (TIM1, TIM8) . . . . . . . . . . . . . . . . . . . . . . . . . . 43

General-purpose timers (TIM2, TIM3, TIM4, TIM5, TIM15, TIM16,

TIM17) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Basic timers (TIM6 and TIM7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Low-power timer (LPTIM1 and LPTIM2) . . . . . . . . . . . . . . . . . . . . . . . . 44

Independent watchdog (IWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

System window watchdog (WWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

SysTick timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

3.25

3.26

3.27

3.28

3.29

3.30

3.31

3.32

3.33

3.34

3.35

3.36

3.37

Real-time clock (RTC) and backup registers . . . . . . . . . . . . . . . . . . . . . . 46

Inter-integrated circuit interface (I

2

C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Universal synchronous/asynchronous receiver transmitter (USART) . . . 48

Low-power universal asynchronous receiver transmitter (LPUART) . . . . 49

Serial peripheral interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Serial audio interfaces (SAI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Single wire protocol master interface (SWPMI) . . . . . . . . . . . . . . . . . . . . 51

Controller area network (CAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Secure digital input/output and MultiMediaCards Interface (SDMMC) . . . 52

Universal serial bus on-the-go full-speed (OTG_FS) . . . . . . . . . . . . . . . . 52

Flexible static memory controller (FSMC) . . . . . . . . . . . . . . . . . . . . . . . . 53

Quad SPI memory interface (QUADSPI) . . . . . . . . . . . . . . . . . . . . . . . . . 54

Development support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

3.37.1

3.37.2

Serial wire JTAG debug port (SWJ-DP) . . . . . . . . . . . . . . . . . . . . . . . . . 55

Embedded Trace Macrocell™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

4

5

Pinouts and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

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Contents

STM32L476xx

6

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

6.1

Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

6.1.1

6.1.2

6.1.3

6.1.4

6.1.5

6.1.6

6.1.7

Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Loading capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Current consumption measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

6.2

6.3

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

6.3.1

6.3.2

6.3.3

6.3.4

6.3.5

6.3.6

6.3.7

6.3.8

6.3.9

6.3.10

6.3.11

6.3.12

6.3.13

6.3.14

6.3.15

6.3.16

6.3.17

6.3.18

6.3.19

6.3.20

6.3.21

6.3.22

6.3.23

6.3.24

6.3.25

General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Operating conditions at power-up / power-down . . . . . . . . . . . . . . . . . . 98

Embedded reset and power control block characteristics . . . . . . . . . . . 98

Embedded voltage reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Supply current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Wakeup time from low-power modes and voltage scaling

transition times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

External clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Internal clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 131

PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Flash memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

EMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Electrical sensitivity characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

I/O current injection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

I/O port characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Analog switches booster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Analog-to-Digital converter characteristics . . . . . . . . . . . . . . . . . . . . . 150

Digital-to-Analog converter characteristics . . . . . . . . . . . . . . . . . . . . . 163

Voltage reference buffer characteristics . . . . . . . . . . . . . . . . . . . . . . . . 167

Comparator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Operational amplifiers characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 170

Temperature sensor characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

V

BAT

monitoring characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

LCD controller characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

DFSDM characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

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