ATMEGA324A-AU vs ATMEGA324P-20AUR Comparison
Detailed side-by-side comparison of ATMEGA324A-AU by Microchip Technology and ATMEGA324P-20AUR 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
ATMEGA324A-AU - AVR MCU 32KB Flash 20MHz TQFP-44 | Microchip
ATMEGA324A-AU β ActiveMicrochip Technology
ATMEGA324P-20AUR
ATMEGA324P-20AUR - 8-Bit AVR MCU 32KB 20MHz | Microchip
ATMEGA324P-20AUR β ActiveSpecification Comparison
| Parameter | ATMEGA324A-AU | ATMEGA324P-20AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.09 | $4.52 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Flash Memory | 32 KB (ISP, read-while-write) | β |
| EEPROM | 1 KB | 1 KB |
| SRAM | 2 KB | 2 KB |
| Maximum CPU Frequency | 20 MHz | β |
| Supply Voltage Range | 1.8 V to 5.5 V (speed-grade dependent) | β |
| General Purpose I/O | 32 lines | β |
| General Purpose Working Registers | 32 | 32 |
| Instructions | 131 (most single-cycle) | β |
| Timers/Counters | 3 | β |
| Real Time Counter | Yes | Yes, with separate oscillator |
| Serial Interfaces | USART, SPI, 2-Wire (I2C/TWI) | SPI master/slave, byte-oriented TWI (I2C) |
| In-System Programming | Yes (ISP) | β |
| Package Type | TQFP-44, 10 x 10 mm, 1 mm height, 0.8 mm pitch | β |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) | β |
| Life Cycle Stage | Active | β |
| RoHS Status | Compliant | Compliant |
| Program Memory Size | β | 32 KB ISP Flash (16K x 16) |
| Maximum Clock Frequency | β | 20 MHz |
| Operating Voltage Range | β | 4.5 V to 5.5 V |
| General Purpose I/O Lines | β | 32 |
| Instruction Set | β | 131 powerful instructions, most single-clock cycle |
| Package | β | 44-pin TQFP (10 x 10 mm, 0.80 mm pitch) |
| Operating Temperature Range | β | -40C to +85C (industrial) |
| ADC | β | 8-channel 10-bit successive approximation |
| USART Interfaces | β | 2 |
| Timer/Counters | β | Three flexible timer/counters with compare modes and PWM |
| Flash Endurance | β | 10,000 write/erase cycles |
| EEPROM Endurance | β | 100,000 write/erase cycles |
| Programming Interfaces | β | SPI, JTAG, bootloader (ISP) |