ST STM32L4R9AII6

ARM® Cortex®-M4120MHz2MB（2M x 8）

Overview

The STM32L4R5xx devices are an ultra-low-power microcontrollers family (STM32L4+ Series) based on the high-performance Arm® Cortex®-M4 32-bit RISC core. They operate at a frequency of up to 120 MHz. The Cortex-M4 core features a single-precision floating-point unit (FPU), which supports all the Arm® single-precision data-processing instructions and all the data types. The CortexM4 core also implements a full set of DSP (digital signal processing) instructions and a memory protection unit (MPU) which enhances the application's security.

Features

• RTC with HW 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 Mbits/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, 2x16-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 OctoSPI memory interface

• 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 (LDO mode)

– 43 μA/MHz Run mode (@ 3.3 V SMPS 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 benckmark

– 1.25 DMIPS/MHz (Drystone 2.1)

– 409.20 Coremark? (3.41 Coremark/MHz@120 MHz)

• Energy benckmark

– 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

Applications

• Light sensing & controlling devices

• Temperature sensing and controlling devices

• Fire detection & safety devices

• Industrial instrumentation devices

• Process control devices