ATMEGA645A-AUR vs ATMEGA645P-AUR Comparison
Detailed side-by-side comparison of ATMEGA645A-AUR by Microchip Technology and ATMEGA645P-AUR 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
ATMEGA645A-AUR - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645A-AUR ✓ ActiveMicrochip Technology
ATMEGA645P-AUR - 8-bit AVR MCU, 64KB Flash, 16MHz | Microchip
ATMEGA645P-AUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645A-AUR | ATMEGA645P-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.68 | $4.50 |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit RISC |
| Max Operating Frequency | 16 MHz | — |
| Flash Memory | 64 KB (32K x 16) ISP FLASH | 64KB (32K x 16) In-System Programmable |
| EEPROM | 2 KB | 2KB |
| SRAM | 4 KB | 4KB |
| Operating Voltage Range | 2.5 V / 3.3 V / 5 V (per datasheet family listing) | — |
| General Purpose I/O | 54 I/O lines | — |
| Working Registers | 32 x 8-bit | — |
| ADC | 10-bit, 8 channels | — |
| LCD Controller | Yes, segment driver (megaAVR LCD family) | — |
| Timers | Two 8-bit, one 16-bit | — |
| Serial Interfaces | 2 x USART, SPI, TWI (I2C compatible) | — |
| Debug / Programming | JTAG, ICSP (In-Circuit Serial Programming) | — |
| Package | 64-TQFP (14 x 14 mm) | 64-TQFP (14x14 mm) |
| Operating Temperature (Max) | 85 C | — |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (R suffix) | Tape & Reel (R suffix) |
| RoHS Status | Compliant | [DATA_NEEDED: RoHS compliance status] |
| Data Bus Width | — | 8 Bit |
| Maximum Clock Frequency | — | 16 MHz |
| Supply Voltage | — | 4.5 V to 5.5 V (16 MHz industrial speed grade) |
| I/O Ports | — | 53 I/O lines |
| Operating Temperature | — | -40C to +85C (A = industrial grade) |
| Programming Interface | — | ICSP (In-Circuit Serial Programming) |
| General Purpose Registers | — | 32 directly connected to ALU |
| Lifecycle Stage | — | Active |
| MSL Rating | — | [DATA_NEEDED: moisture sensitivity level] |