STMicroelectronics STM32L496 graphics with power efficiency

The STM32L496xx devices are the ultra-low-power microcontrollers based on the high-performance ARM® Cortex®-M4 32-bit RISC core of up to 80 MHz.The Cortex-M4 core features a Floating point unit (FPU) single precision which supports all ARM single-precision data-processing instructions and data types. It has a full set of DSP instructions and a memory protection unit (MPU) which enhances  security.The STM32L496xx embed high-speed memories (up to 1 Mbyte of Flash memory, 320 Kbyte of SRAM), a flexible external memory controller (FSMC) for static memories, a Quad SPI flash memories interface.

Key features

• Ultra-low-power 1.71 V to 3.6 V power supply
• ART Accelerator™ for enhanced graphic content creation
• Memories Up to 1 MB Flash, 2 banks
• -40° C to 85/105/125° C temperature range

Additional features

• Ultra-low-power with FlexPowerControl1.71 V to 3.6 V power supply
• -40° C to 85/105/125° C temperature range
• 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
• Performance benchmark1.25 DMIPS/MHz (Drystone 2.1)
• 273.55 Coremark® (3.42 Coremark/MHz @ 80 MHz)
• Energy benchmark217 ULPBENCHTM score
• 16 x timers: 2 x 16-bit advanced motor-control, 2 x 32-bit and 5 x 16-bit general purpose, 2 x 16-bit basic, 2 x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer
• RTC with HW calendar, alarms and calibration
• Up to 136 fast I/Os, most 5 V-tolerant, up to 14 I/Os with independent supply down to 1.08 V
• Dedicated Chrom-ART Accelerator™ for enhanced graphic content creation (DMA2D)
• 8- to 14-bit camera interface up to 32 MHz (black&white) or 10 MHz (color)
• MemoriesUp to 1 MB Flash, 2 banks read-while-write, proprietary code readout protection
• 320 KB of SRAM including 64 KB with hardware parity check
• External memory interface for static memories supporting SRAM, PSRAM, NOR and NAND memories
• Dual-flash Quad SPI memory interface
• Clock Sources4 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
• LCD 8 × 40 or 4 × 44 with step-up converter

Applications

• Every wearable with graphics display
• Embedded applications requiring a lot of RAM

Discovery Kit 

The STM32L496GDISCOVERY Discovery board is a complete demonstration and development platform for STMicroelectronics ARM® Cortex®-M4 core-based STM32L496AG microcontroller. Thanks to the innovative ultra-low-power oriented features, extended RAM and graphics performance (Chrom-ART Accelerator™) offered by the STM32L496AG, the 32L496GDISCOVERY board is designed to enable easy prototyping for many applications, including audio and graphics, with state-of-the-art energy efficiency. For even more user-friendliness, the on-board ST-LINK/V2-1 debugger provides out-of-the-box loading and debugging capabilities.

Key Features

• STM32L496AGI6 microcontroller featuring 1 Mbyte of Flash memory and 320 Kbytes of RAM in an UFBGA169 package
• 1.54 inch 240 x 240 pixel-TFT color LCD with parallel interface
• SAI Audio CODEC, with a stereo headset jack, including analog microphone input
• Stereo digital MEMS microphones
• microSD™ card connector (card included)
• Camera 8 bit-connector
• STMod+ and PMOD connectors
• 8 Mbit-PSRAM
• IDD measurement
• 64 Mbit-Quad-SPI Flash
• 8 LEDs
• Reset push button
• 4 direction-joystick with selection
• USB OTG FS with Micro-AB connector
• Compatible Arduino™ Uno V3 connectors
• On-board ST-LINK/V2-1 debugger
• USB ST-LINK functions: Virtual COM port, mass storage, debug port
• 5 source options for power supplyST-LINK/V2-1 USB connector
• User USB FS connector
• VIN from Arduino™ connector
• 5 V from Arduino™ connector
• USB charger
• 2 possible supply voltages for the MCU: 1.8 V and 3.3 V
• Comprehensive free software including a variety of examples, part of the STM32Cube package