ATMEGA324A-AU vs ATMEGA324P-20AQR Comparison
Detailed side-by-side comparison of ATMEGA324A-AU by Microchip Technology and ATMEGA324P-20AQR by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
ATMEGA324A-AU - AVR MCU 32KB Flash 20MHz TQFP-44 | Microchip
ATMEGA324A-AU ✓ ActiveMicrochip Technology
ATMEGA324P-20AQR - 8-bit AVR MCU, 32KB Flash, 20MHz | Microchip
ATMEGA324P-20AQR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA324A-AU | ATMEGA324P-20AQR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Core Architecture | 8-bit AVR RISC | — |
| Flash Memory | 32 KB (ISP, read-while-write) | 32 KB (16K x 16) |
| EEPROM | 1 KB | — |
| SRAM | 2 KB | — |
| Maximum CPU Frequency | 20 MHz | — |
| Supply Voltage Range | 1.8 V to 5.5 V (speed-grade dependent) | — |
| General Purpose I/O | 32 lines | — |
| General Purpose Working Registers | 32 | — |
| Instructions | 131 (most single-cycle) | — |
| Timers/Counters | 3 | — |
| Real Time Counter | Yes | — |
| Serial Interfaces | USART, SPI, 2-Wire (I2C/TWI) | — |
| In-System Programming | Yes (ISP) | — |
| Package Type | TQFP-44, 10 x 10 mm, 1 mm height, 0.8 mm pitch | — |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) | Extended (A-variant), per Microchip extended range |
| Life Cycle Stage | Active | — |
| RoHS Status | Compliant | Compliant (GREEN package) |
| Core Processor | — | AVR |
| Core Size | — | 8-bit |
| Speed | — | 20 MHz |
| EEPROM Size | — | 1 KB |
| RAM Size | — | 2 KB |
| Supply Voltage (Vcc/Vdd) | — | 2.7 V to 5.5 V |
| GPIO Count | — | 32 |
| Number of USARTs | — | 2 |
| Peripherals | — | SPI, TWI (I2C), JTAG, WDT, Brown-out Detect/Reset, PWM |
| ADC Resolution | — | 10-bit, 8 channels |
| MIPS Throughput | — | Up to 16-20 MIPS (1 MIPS/MHz) |
| Package | — | 44-TQFP (10x10 mm) |
| Oscillator Type | — | Internal |
| Program Memory Type | — | ISP FLASH, read-while-write |
| Packaging | — | Tape & Reel (T&R) |