STM32L475VC datasheet(9/193 Pages) STMICROELECTRONICS

Part #	STM32L475VC

Description	Ultra-low-power ARM Cortex-M4 32-bit MCUFPU, 100DMIPS, up to 1MB Flash, 128 KB SRAM, USB OTG FS, analog, audio

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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9 / 193 page

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STM32L475xx

List of figures

9

List of figures

Figure 1.

STM32L475xx block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 2.

Power supply overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 3.

Clock tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 4.

Voltage reference buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 5.

STM32L475Vx LQFP100 pinout(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Figure 6.

STM32L475Rx LQFP64 pinout(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Figure 7.

STM32L475 memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Figure 8.

Pin loading conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Figure 9.

Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Figure 10.

Power supply scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Figure 11.

Current consumption measurement scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Figure 12.

VREFINT versus temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Figure 13.

High-speed external clock source AC timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Figure 14.

Low-speed external clock source AC timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Figure 15.

Typical application with an 8 MHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Figure 16.

Typical application with a 32.768 kHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Figure 17.

HSI16 frequency versus temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Figure 18.

Typical current consumption versus MSI frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Figure 19.

I/O input characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Figure 20.

I/O AC characteristics definition(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Figure 21.

Recommended NRST pin protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Figure 22.

ADC accuracy characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Figure 23.

Typical connection diagram using the ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Figure 24.

12-bit buffered / non-buffered DAC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Figure 25.

SPI timing diagram - slave mode and CPHA = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Figure 26.

SPI timing diagram - slave mode and CPHA = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Figure 27.

SPI timing diagram - master mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Figure 28.

Quad SPI timing diagram - SDR mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Figure 29.

Quad SPI timing diagram - DDR mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Figure 30.

SAI master timing waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Figure 31.

SAI slave timing waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Figure 32.

SDIO high-speed mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Figure 33.

SD default mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Figure 34.

Asynchronous multiplexed PSRAM/NOR read waveforms. . . . . . . . . . . . . . . . . . . . . . . . 174

Figure 35.

Asynchronous multiplexed PSRAM/NOR write waveforms . . . . . . . . . . . . . . . . . . . . . . . 176

Figure 36.

Synchronous multiplexed NOR/PSRAM read timings . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Figure 37.

Synchronous multiplexed PSRAM write timings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

Figure 38.

LQFP100 - 100-pin, 14 x 14 mm low-profile quad flat package outline . . . . . . . . . . . . . . 182

Figure 39.

LQFP100 - 100-pin, 14 x 14 mm low-profile quad flat

recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Figure 40.

LQFP100 marking (package top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Figure 41.

LQFP64 - 64-pin, 10 x 10 mm low-profile quad flat package outline . . . . . . . . . . . . . . . . 185

Figure 42.

LQFP64 - 64-pin, 10 x 10 mm low-profile quad flat package

recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Figure 43.

LQFP64 marking (package top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Figure 44.

LQFP64 PD max vs. TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

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