This is information on a product in full production.

March 2020 DS12024 Rev 4 1/273

STM32L4S5xx STM32L4S7xx

STM32L4S9xx

Ultra-low-power Arm

Cortex

-M4 32-bit MCU+FPU, 150DMIPS,

up to 2MB Flash, 640KB SRAM, LCD-TFT & MIPI DSI, AES+HASH

Datasheet- production data

Features

• Ultra-low-power with FlexPowerControl

– 1.71 V to 3.6 V power supply

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

– Batch acquisition mode (BAM)

– 305 nA in VBAT mode: supply for RTC and

32x32-bit backup registers

– 33 nA Shutdown mode (5 wakeup pins)

– 125 nA Standby mode (5 wakeup pins)

– 420 nA Standby mode with RTC

–2.8 μA Stop 2 with RTC

– 110 μA/MHz Run mode

– 5 µs wakeup from Stop mode

– Brownout 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 120 MHz,

MPU, 150 DMIPS/1.25 DMIPS/MHz

(Dhrystone 2.1), and DSP instructions

• Performance benchmark

– 1.25 DMIPS/MHz (Drystone 2.1)

– 409.20 CoreMark

(3.41 CoreMark/MHz

@120 MHz)

• Energy benchmark

– 233 ULPMark™CP score

– 56.5 ULPMark™PP 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

– 3 PLLs for system clock, USB, audio, ADC

• RTC with hardware calendar, alarms and

calibration

• Up to 24 capacitive sensing channels: support

touchkey, linear and rotary touch sensors

• Advanced graphics features

– Chrom-ART Accelerator (DMA2D) for

enhanced graphic content creation

– Chrom-GRC (GFXMMU) allowing up to

20% of graphic resources optimization

–MIPI

DSI Host controller with two DSI

lanes running at up to 500 Mbit/s each

– LCD-TFT controller

• 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 136 fast I/Os, most 5 V-tolerant, up to 14

I/Os with independent supply down to 1.08 V

• Memories

– 2-Mbyte Flash, 2 banks read-while-write,

proprietary code readout protection

– 640 Kbytes of SRAM including 64 Kbytes

with hardware parity check

– External memory interface for static

memories supporting SRAM, PSRAM,

NOR, NAND and FRAM memories

– 2 x Octo-SPI memory interface

• 4x digital filters for sigma delta modulator

• Rich analog peripherals (independent supply)

– 12-bit ADC 5 Msps, up to 16-bit with

hardware oversampling, 200 µA/Msps

UFBGA132 (7 × 7)

LQFP144 (20 × 20)

UFBGA169 (7 x 7)

LQFP100 (14 x 14)

UFBGA144 (10 x 10)

WLCSP144

(pitch 0.4 mm)

www.st.com

STM32L4S5xx, STM32L4S7xx and STM32L4S9xx

2/273 DS12024 Rev 4

– 2x 12-bit DAC, low-power sample and hold

– 2x operational amplifiers with built-in PGA

– 2x ultra-low-power comparators

• 20x communication interfaces

– USB OTG 2.0 full-speed, LPM and BCD

– 2x SAIs (serial audio interface)

–4x I2C FM+(1 Mbit/s), SMBus/PMBus

– 6x USARTs (ISO 7816, LIN, IrDA, modem)

– 3x SPIs (5x SPIs with the dual Octo-SPI)

– CAN (2.0B Active) and SDMMC

• 14-channel DMA controller

• True random number generator

• CRC calculation unit, 96-bit unique ID

• 8- to 14-bit camera interface up to 32 MHz

(black and white) or 10 MHz (color)

• Encryption hardware accelerator: AES

(128/256-bit key), HASH (SHA-256)

• Development support: serial wire debug

(SWD), JTAG, Embedded Trace Macrocell

™

(ETM)

Table 1. Device summary

Reference Part numbers

STM32L4S5xx STM32L4S5VI, STM32L4S5QI, STM32L4S5ZI, STM32L4S5AI

STM32L4S7xx STM32L4S7VI, STM32L4S7ZI, STM32L4S7AI

STM32L4S9xx STM32L4S9VI, STM32L4S9ZI, STM32L4S9AI