ATMEGA645A-AU vs ATMEGA165A-AU Comparison
Detailed side-by-side comparison of ATMEGA645A-AU by Microchip Technology and ATMEGA165A-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
ATMEGA645A-AU - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645A-AU ✓ ActiveMicrochip Technology
ATMEGA165A-AU - 8-Bit AVR MCU 16KB Flash 16MHz | Microchip
ATMEGA165A-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645A-AU | ATMEGA165A-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.95 | $3.47 |
| Core Architecture | 8-bit AVR RISC | — |
| Max CPU Frequency | 16 MHz | — |
| Flash Memory | 64 KB (32K x 16) In-System Programmable | — |
| EEPROM | 2 KB | — |
| SRAM | 4 KB | — |
| General Purpose I/O | 54 GPIO | — |
| Package | 64-TQFP (14x14 mm) | 64-pin TQFP (14 x 14 mm, 1 mm height) |
| Mounting Type | Surface Mount | Surface Mount |
| Supply Voltage | 4.5 V to 5.5 V (16 MHz operation) | — |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | -40C to +85C (industrial) |
| ADC | 10-bit, up to 8 channels | — |
| LCD Controller | Yes, up to 4 COM x 25 SEG | — |
| Communication Interfaces | USART, SPI, TWI (I2C) | SPI, UART/USART, USI |
| Timers | 2 x 8-bit, 1 x 16-bit (plus watchdog) | — |
| Number of Pins | 64 | — |
| RoHS Status | Compliant | Compliant |
| MSL Level | [DATA_NEEDED: moisture sensitivity level] | — |
| Core Processor | — | AVR 8-bit RISC |
| Program Memory Size | — | 16 KB (8K x 16) Flash |
| EEPROM Size | — | 512 B |
| SRAM Size | — | 1 KB |
| Maximum Clock Speed | — | 16 MHz |
| Throughput | — | Up to 16 MIPS at 16 MHz |
| Supply Voltage Range | — | 2.7 V to 5.5 V |
| Number of I/O Lines | — | 54 |
| General Purpose Working Registers | — | 32 |
| Instruction Set | — | 133 powerful instructions, most single clock cycle |
| ADC Resolution | — | 10-bit successive approximation |
| Debug Interface | — | JTAG (boundary-scan and on-chip debug) |
| Brown-out Detection | — | Programmable |
| Watchdog Timer | — | Programmable on-chip |