ATSAMG55J19A-AU

The ATSAMG55J19A-AU is Microchip/Atmel’s SAM G55 family 32‑bit microcontroller powered by an ARM Cortex‑M4F core. It targets high‑performance, low‑power embedded applications and bundles a rich peripheral set including USB 2.0 full‑speed, multiple serial interfaces (USART/SPI/I2C via SERCOM), ADCs, DAC, PWM, timers, DMAC, Event System, CRC, and a hardware crypto engine for security. The Cortex‑M4F provides DSP instructions and a floating‑point unit for efficient signal processing. It supports flexible clocking and power modes suitable for battery‑powered designs. The “-AU” suffix refers to a specific package/temperature grade; check the datasheet for exact package pinout and temperature range. Development is supported with Microchip Studio or MPLAB X, Atmel Start for configuration/code generation, and standard MCU software libraries (ASF/HAL). Typical applications include motor control, sensors and industrial I/O, USB peripherals, and embedded devices requiring a capable MCU with security features. For exact specifications (flash, RAM, maximum frequency, peripherals), consult the ATSAMG55J19A-AU datasheet and family user guide.

Key features of ATSAMG55J19A-AU (SAM G55 family):
- CPU: ARM Cortex-M4F core with DSP instructions and FPU; up to 120 MHz
- Memory: On-chip flash up to about 1 MB; RAM up to a few hundred KB
- USB: USB 2.0 (OTG/FS) peripheral support
- Crypto: Hardware cryptography engine and RNG for secure operations
- Analog: ADCs and DAC for analog interfacing
- Timers and PWMs: Multiple timers and PWM channels for control
- Communications: Multiple SERCOM modules (UART/SPI/I2C); other serial interfaces as supported
- DMA: DMA/DMAC for efficient data transfer
- Power: Low-power modes and wakeup features for battery/applications
- Security: On-chip security features and boot/maintenance options
- Packaging: AU variant (specific pin count/package details per datasheet)
Note: exact memory sizes, peripherals, and I/O count vary by subvariant; refer to the datasheet for precise specs.

The ATSAMG55J19A-AU uses a 144-pin LQFP (lead quad flat pack) package.

Pin count: 64-pin LQFP (AU package).
Function: Microcontroller (ATSAMG55J19A-AU) in the SAM G55 family—ARM Cortex-M4F based 32-bit MCU with integrated flash and RAM and multiple peripherals for embedded control.

- Manufacturer: Microchip Technology Inc. (owner of the Atmel/SAM line after acquiring Atmel in 2016).
- What kind of company: A global semiconductor company that designs and manufactures microcontrollers, memory, and analog components for embedded systems (brands include SAM, PIC, and AVR MCU families).

- Secure IoT and connected devices (secure boot, cryptography)
- Industrial automation, motor control and drive systems
- USB/OTG peripherals and multimedia/audio processing
- Building/home automation and smart devices
- Medical devices and healthcare peripherals requiring data security