ATMEGA164P-20AQ vs ATMEGA644PA-AU Comparison
Detailed side-by-side comparison of ATMEGA164P-20AQ by Microchip Technology and ATMEGA644PA-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
ATMEGA164P-20AQ - 16KB Flash 8-bit AVR MCU 20MHz TQFP-44 | Microchip
ATMEGA164P-20AQ ✓ ActiveMicrochip Technology
ATMEGA644PA-AU - 8-bit AVR MCU, 20MHz, 64KB Flash | Microchip
ATMEGA644PA-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA164P-20AQ | ATMEGA644PA-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.94 | $4.61 |
| Core Architecture | AVR 8-bit RISC | AVR 8-bit RISC |
| Flash Memory | 16 KB (8K x 16) ISP, read-while-write | — |
| EEPROM | 512 B | 2 KB |
| SRAM | 1 KB | 4 KB |
| Maximum CPU Speed | 20 MHz | — |
| Supply Voltage Range | 2.7 V to 5.5 V | 1.8 V to 5.5 V |
| General Purpose I/O | 32 lines | — |
| General Purpose Working Registers | 32 | — |
| Instruction Set | 131 instructions, mostly single-cycle | — |
| MIPS Throughput | Up to 20 MIPS at 20 MHz | — |
| Package | 44-TQFP (10 x 10 mm) | 44-pin TQFP (10x10 mm) |
| Operating Temperature | -40C to +85C (extended, A suffix) | -40C to +85C (industrial) |
| ADC | 10-bit, 8 channels | 8-channel, 10-bit |
| Serial Interfaces | USART, SPI, TWI (I2C) | — |
| Low Power Technology | picoPower | — |
| Watchdog Timer | Programmable WDT with separate oscillator | — |
| RoHS Status | Compliant (green package) | Compliant |
| Mounting Type | Surface Mount | Surface Mount |
| Family | — | ATmega |
| Series | — | ATmega644P / picoPower |
| Maximum Clock Frequency | — | 20 MHz |
| Program Memory (Flash) | — | 64 KB (32K x 16) |
| GPIO Pins | — | 32 |
| USART | — | 2 |
| I2C (TWI) | — | 1 |
| SPI | — | 1 |
| Timer/Counters | — | 3 (with PWM and compare modes) |
| MIPS | — | 20 MIPS at 20 MHz |
| Programming Interface | — | ISP / ICSP / JTAG / debugWIRE |