ATMEGA645P-AU vs ATMEGA645-16AI Comparison
Detailed side-by-side comparison of ATMEGA645P-AU by Microchip Technology and ATMEGA645-16AI 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
ATMEGA645-16AI - 8-bit AVR MCU 64KB Flash 16MHz | Microchip
ATMEGA645-16AI ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645P-AU | ATMEGA645-16AI |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.60 | $6.45 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Flash Memory | 64 KB (32K x 16) ISP | — |
| EEPROM | 2 KB | 2 KB |
| SRAM | 4 KB | 4 KB |
| Maximum Clock Frequency | 16 MHz | 16 MHz |
| Supply Voltage Range | 2.5 V to 5.5 V | — |
| General Purpose I/O | 54 lines | — |
| 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) | -40C to +85C (industrial, I grade) |
| 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 |
| Flash Program Memory | — | 64 KB (32K x 16) ISP |
| Throughput | — | 16 MIPS at 16 MHz |
| Operating Voltage Range | — | 2.7 V to 5.5 V |
| ADC | — | 8-channel, 10-bit |
| Programmable I/O | — | 68 (device), 54 available on 64-TQFP |
| JTAG Interface | — | Yes (on-chip debugging and boundary scan) |
| Instruction Set | — | 130 instructions, mostly single-cycle |
| Interfaces | — | USART, SPI, TWI (I2C) |
| ISP Capability | — | In-System Programmable Flash |