ATMEGA645P-AU vs ATMEGA645A-AU Comparison
Detailed side-by-side comparison of ATMEGA645P-AU by Microchip Technology and ATMEGA645A-AU 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
ATMEGA645P-AU - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645P-AU ✓ ActiveMicrochip Technology
ATMEGA645A-AU - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645A-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645P-AU | ATMEGA645A-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.60 | $3.95 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Flash Memory | 64 KB (32K x 16) ISP | 64 KB (32K x 16) In-System Programmable |
| EEPROM | 2 KB | 2 KB |
| SRAM | 4 KB | 4 KB |
| Maximum Clock Frequency | 16 MHz | — |
| Supply Voltage Range | 2.5 V to 5.5 V | — |
| General Purpose I/O | 54 lines | 54 GPIO |
| Working Registers | 32 x 8-bit general purpose | — |
| Package | 64-TQFP (14 x 14 mm) | 64-TQFP (14x14 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) | [DATA_NEEDED: operating temperature range] |
| Programming Interface | ICSP (In-Circuit Serial Programming) | — |
| Debug Support | debugWIRE via MPLAB SNAP | — |
| Low Power Technology | picoPower | — |
| Approximate Throughput | up to 16 MIPS at 16 MHz (1 MIPS/MHz) | — |
| RoHS Status | Compliant (Green package per Microchip listings) | Compliant |
| Max CPU Frequency | — | 16 MHz |
| Supply Voltage | — | 4.5 V to 5.5 V (16 MHz operation) |
| ADC | — | 10-bit, up to 8 channels |
| LCD Controller | — | Yes, up to 4 COM x 25 SEG |
| Communication Interfaces | — | USART, SPI, TWI (I2C) |
| Timers | — | 2 x 8-bit, 1 x 16-bit (plus watchdog) |
| Number of Pins | — | 64 |
| MSL Level | — | [DATA_NEEDED: moisture sensitivity level] |