32-Bit Arm® Cortex®-M4/M0 MCU; 1 MB Flash and 136 KB SRAM; Ethernet, 2 X USB, EMC, AES Engine

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Product Details


  • Cortex-M4 Processor core
    • Arm Cortex-M4 processor (version r0p1), running at frequencies of up to 204 MHz.
    • Built-in Memory Protection Unit (MPU) supporting eight regions.
    • Built-in Nested Vectored Interrupt Controller (NVIC).
    • Hardware floating-point unit.
    • Non-maskable Interrupt (NMI) input.
    • JTAG and Serial Wire Debug (SWD), serial trace, eight breakpoints, and four watch points.
    • Enhanced Trace Module (ETM) and Enhanced Trace Buffer (ETB) support.
    • System tick timer.
  • Cortex-M0 Processor core
    • Arm Cortex-M0 coprocessor (version r0p0) capable of off-loading the main Arm Cortex-M4 application processor.
    • Running at frequencies of up to 204 MHz.
    • JTAG
    • Built-in NVIC.
  • On-chip memory
    • 1 MB on-chip dual bank flash memory with flash accelerator.
    • 16 kB on-chip EEPROM data memory.
    • 136 kB SRAM for code and data use.
    • Multiple SRAM blocks with separate bus access. Two SRAM blocks can be powered down individually.
    • 64 kB ROM containing boot code and on-chip software drivers.
    • 64 bit of One-Time Programmable (OTP) memory for general-purpose use.
    • Two banks (256 bit total) One-Time Programmable (OTP) memory for AES key storage. One bank can store an encrypted key for decoding the boot image.
  • AES engine for encryption and decryption of the boot image and data with DMA support and programmable via a ROM-based API.
  • Configurable digital peripherals
    • Serial GPIO (SGPIO) interface.
    • State Configurable Timer (SCT) subsystem on AHB.
    • Global Input Multiplexer Array (GIMA) allows to cross-connect multiple inputs and outputs to event driven peripherals like the timers, SCT, and ADC0/1.
  • Serial interfaces
    • Quad SPI Flash Interface (SPIFI) with four lanes and up to 52 MB per second.
    • 10/100T Ethernet MAC with RMII and MII interfaces and DMA support for high throughput at low CPU load. Support for IEEE 1588 time stamping/advanced time stamping (IEEE 1588-2008 v2).
    • One High-speed USB 2.0 Host/Device interface with DMA support, on-chip full-speed PHY and ULPI interface to external high-speed PHY
    • USB interface electrical test software included in ROM USB stack.
    • One 550 UART with DMA support and full modem interface.
    • Three 550 USARTs with DMA and synchronous mode support and a smart card interface conforming to ISO7816 specification. One USART with IrDA interface.
    • Up to two C_CAN 2.0B controllers with one channel each.
    • Two SSP controllers with FIFO and multi-protocol support. Both SSPs with DMA support.
    • One SPI controller.
    • One Fast-mode Plus I²C-bus interface with monitor mode and with open-drain I/O pins conforming to the full I²C-bus specification. Supports data rates of up to 1 Mbit/s.
    • One standard I²C-bus interface with monitor mode and with standard I/O pins.
    • Two I²S interfaces, each with DMA support and with one input and one output.
  • Digital peripherals
    • External Memory Controller (EMC) supporting external SRAM, ROM, NOR flash, and SDRAM devices.
    • Secure Digital Input Output (SD/MMC) card interface.
    • Eight-channel General-Purpose DMA controller can access all memories on the AHB and all DMA-capable AHB followers
    • Up to 49 General-Purpose Input/Output (GPIO) pins with configurable pull-up/pull-down resistors.
    • GPIO registers are located on the AHB for fast access. GPIO ports have DMA support.
    • Up to eight GPIO pins can be selected from all GPIO pins as edge and level sensitive interrupt sources.
    • Two GPIO group interrupt modules enable an interrupt based on a programmable pattern of input states of a group of GPIO pins.
    • Four general-purpose timer/counters with capture and match capabilities.
    • Repetitive Interrupt timer (RI timer).
    • Windowed watchdog timer (WWDT).
    • Ultra-low power Real-Time Clock (RTC) on separate power domain with 256 bytes of battery powered backup registers.
    • Alarm timer; can be battery powered.
  • Analog peripherals
    • One 10-bit DAC with DMA support and a data conversion rate of 400 kSamples/s.
    • Two 10-bit ADCs with DMA support and a data conversion rate of 400 kSamples/s. Up to eight input channels per ADC.
  • Unique ID for each device.
  • Clock generation unit
    • Crystal oscillator with an operating range of 1 MHz to 25 MHz.
    • 12 MHz internal RC oscillator trimmed to 3 % accuracy over temperature and voltage (1.5 % accuracy for Tamb = 0 °C to 85 °C).
    • Ultra-low power Real-Time Clock (RTC) crystal oscillator.
    • Three PLLs allow CPU operation up to the maximum CPU rate without the need for a high-frequency crystal. The second PLL can be used with the High-speed USB, the third PLL can be used as audio PLL.
    • Clock output.
  • Power
    • Single 3.3 V (2.4 V to 3.6 V) power supply with on-chip DC-to-DC converter for the core supply and the RTC power domain.
    • RTC power domain can be powered separately by a 3 V battery supply.
    • Four reduced power modes: Sleep, Deep-sleep, Power-down, and Deep power-down.
    • Processor wake-up from Sleep mode via wake-up interrupts from various peripherals.
    • Wake-up from Deep-sleep, Power-down, and Deep power-down modes via external interrupts and interrupts generated by battery powered blocks in the RTC power domain.
    • Brownout detect with four separate thresholds for interrupt and forced reset.
    • Power-On Reset (POR).
  • Available as TFBGA100 package.

Target Applications

  • Secure industrial gateways
  • Automotive aftermarket, including telematics
  • Smart meters
  • Industrial controls
  • Industrial automation
  • Diagnostic equipment
  • White goods HMI
  • Data collectors and navigation
  • Electronic instruments

Part numbers include: LPC43S37JET100.


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