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ATSAM3A4CA-AU
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Product Detailed Parameters
- Description：IC MCU 32BIT 256KB FLASH 100LQFP
- Series：SAM3A
- Mfr：Microchip Technology
- Package：Tray
- Core Processor：ARM® Cortex®-M3
- Core Size：32-Bit Single-Core
- Speed：84MHz
- Connectivity：CANbus, I2C, IrDA, LINbus, MMC, SPI, SSC, UART/USART, USB
- Peripherals：Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O：63
- Program Memory Size：256KB (256K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：64K x 8
- Voltage - Supply (Vcc/Vdd)：1.62V ~ 3.6V
- Data Converters：A/D 16x12b; D/A 2x12b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：100-LQFP (14x14)
- Package / Case：100-LQFP
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Overview
The ATSAM3A4CA-AU is a 32-bit microcontroller based on the ARM Cortex-M3 processor, operating at a maximum frequency of 84 MHz. It features 256 Kbytes of embedded Flash memory and 96 Kbytes of SRAM (64 Kbytes + 32 Kbytes). The device includes a 16 Kbytes ROM with bootloader routines, a 12-bit ADC with 16 channels, and two 12-bit DACs. Connectivity options include USB 2.0 High Speed Mini Host/Device, Ethernet MAC, two CAN controllers, multiple USARTs, SPIs, and TWI interfaces. It operates within a voltage range of 1.62V to 3.6V and is housed in a 100-lead LQFP package.
Feature Summary
- High-performance 32-bit ARM Cortex-M3 core running up to 84 MHz
- Integrated USB 2.0 High Speed Mini Host/Device port with dedicated DMA
- Ethernet MAC support for networking applications
- Dual CAN controllers with eight mailboxes each
Applications
- Industrial automation systems
- Home and building automation gateways
- Networking equipment
Procurement Notes
Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with existing design constraints regarding power supply sequencing and pinout assignments before procurement.
Selection Notes
Select this component for designs requiring high-speed data transfer capabilities and robust connectivity features such as Ethernet and dual CAN buses. Consider the available I/O lines and peripheral set when evaluating system requirements against the specific memory and interface configurations offered by this model.
Part Context
This part belongs to the SAM3A series of Flash microcontrollers from Microchip Technology. It shares architectural similarities with the SAM3X series but differs in specific peripheral availability and package options. The series is designed for applications demanding high performance and low power consumption.
Replacement Considerations
Consult official substitution lists for compatible parts within the SAM3A or SAM3X families. Verify pin-to-pin compatibility and functional equivalence before considering alternative models.
