ATMEGA645A-AU vs ATMEGA165P-16AN Comparison
Detailed side-by-side comparison of ATMEGA645A-AU by Microchip Technology and ATMEGA165P-16AN 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
ATMEGA165P-16AN - AVR 8-bit MCU 16KB 16MHz TQFP-64 | Microchip
ATMEGA165P-16AN ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645A-AU | ATMEGA165P-16AN |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.95 | $1.65 |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit RISC |
| Max CPU Frequency | 16 MHz | — |
| Flash Memory | 64 KB (32K x 16) In-System Programmable | 16 KB (8K x 16) ISP |
| EEPROM | 2 KB | 512 B |
| SRAM | 4 KB | 1 KB |
| General Purpose I/O | 54 GPIO | 53 lines |
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14 x 14 mm) |
| 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] | — |
| 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) | Three flexible Timer/Counters |
| Number of Pins | 64 | — |
| RoHS Status | Compliant | Compliant (Green per Mouser listing) |
| MSL Level | [DATA_NEEDED: moisture sensitivity level] | — |
| Max CPU Speed | — | 16 MHz |
| Working Registers | — | 32 x 8-bit |
| Instruction Set | — | 131 instructions, most single-cycle |
| Throughput | — | Up to 16 MIPS |
| Supply Voltage Range | — | 1.8 V to 5.5 V |
| Supply Voltage Grades | — | 3.3 V / 5 V |
| Debug/Programming Interfaces | — | JTAG (boundary-scan, on-chip debug), ISP |
| Operating Temperature Range | — | [DATA_NEEDED: operating temperature range] |
| ADC Resolution/Channels | — | [DATA_NEEDED: ADC resolution and channels] |
| Data Retention | — | [DATA_NEEDED: flash data retention] |