ATMEGA645-16AUR vs ATMEGA64A-AU Comparison
Detailed side-by-side comparison of ATMEGA645-16AUR by Microchip Technology and ATMEGA64A-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
ATMEGA645-16AUR - 8-Bit AVR MCU 64KB 16MHz 64-TQFP | Microchip
ATMEGA645-16AUR ✓ ActiveMicrochip Technology
ATMEGA64A-AU - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip (Tape & Reel)
ATMEGA64A-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645-16AUR | ATMEGA64A-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Core | AVR 8-bit RISC | — |
| Core Size | 8-bit | — |
| Max Clock Frequency | 16 MHz | — |
| MIPS Throughput | 16 MIPS at 16 MHz | — |
| Program Memory (Flash) | 64 KB (32K x 16) | — |
| SRAM | 4 KB | — |
| EEPROM | 2 KB | — |
| Supply Voltage Range | 4.5 V to 5.5 V | — |
| ADC Channels | 8-channel 10-bit | — |
| Programmable I/O Lines | 53 (TQFP-64 package) | — |
| Debug Interface | JTAG (on-chip debugging and boundary scan) | — |
| Instruction Count | 130 instructions, most single-cycle | — |
| Package | 64-TQFP (14 x 14 mm) | 64-TQFP (14x14mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (A grade) | — |
| RoHS Status | Compliant (R suffix) | Compliant (GREEN per FindIC listing) |
| Lifecycle Stage | Active | — |
| Core Architecture | — | 8-bit AVR RISC |
| Program Memory Size | — | 64KB (32K x 16) ISP Flash |
| EEPROM Size | — | 2KB |
| SRAM Size | — | 4KB |
| Maximum CPU Speed | — | 16MHz |
| General Purpose I/O | — | 53 lines |
| Working Registers | — | 32 general purpose |
| Timers/Counters | — | 4 flexible timer/counters with compare modes and PWM |
| ADC | — | 8-channel, 10-bit (from manufacturer product summary) |
| Communication Interfaces | — | 2x USART, SPI, TWI (I2C compatible) |
| Oscillator Type | — | Internal |
| Debug / Test | — | JTAG for on-chip debug and boundary scan |
| Operating Temperature Range | — | Industrial (-40C to +85C) |
| Packaging | — | Tape & Reel (TR) |
| Pin Compatibility | — | 100% pin compatible with ATmega103 |