ATMEGA644PA-AU vs ATMEGA164PA-AUR Comparison
Detailed side-by-side comparison of ATMEGA644PA-AU by Microchip Technology and ATMEGA164PA-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
ATMEGA644PA-AU - 8-bit AVR MCU, 20MHz, 64KB Flash | Microchip
ATMEGA644PA-AU ✓ ActiveMicrochip Technology
ATMEGA164PA-AUR - 8-Bit AVR MCU 16KB Flash 20MHz | Microchip
ATMEGA164PA-AUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA644PA-AU | ATMEGA164PA-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.61 | $2.05 |
| Core Architecture | AVR 8-bit RISC | 8-bit AVR enhanced RISC |
| Family | ATmega | — |
| Series | ATmega644P / picoPower | — |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) | 16 KB (8K x 16) in-system programmable |
| SRAM | 4 KB | 1 KB |
| EEPROM | 2 KB | 512 B |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +85C (industrial) | — |
| GPIO Pins | 32 | — |
| ADC | 8-channel, 10-bit | 8-channel, 10-bit successive approximation |
| USART | 2 | — |
| I2C (TWI) | 1 | — |
| SPI | 1 | — |
| Timer/Counters | 3 (with PWM and compare modes) | — |
| Package | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| MIPS | 20 MIPS at 20 MHz | — |
| Programming Interface | ISP / ICSP / JTAG / debugWIRE | — |
| RoHS Status | Compliant | Compliant |
| Throughput | — | Up to 20 MIPS at 20 MHz (1 MIPS/MHz) |
| General Purpose I/O Lines | — | 32 |
| General Purpose Working Registers | — | 32 |
| Serial Interfaces | — | 2x USART, 1x TWI (I2C), 1x SPI |
| Timers | — | 2x 8-bit, 1x 16-bit with PWM and compare modes |
| Real-Time Counter | — | Yes, with separate oscillator |
| Operating Temperature Range | — | -40 C to +85 C (industrial) |
| Packaging | — | Tape & Reel (AUR suffix) |
| Instruction Set | — | 131 powerful instructions, most single clock cycle |
| Programming Interfaces | — | SPI, JTAG (IEEE 1149.1), debugWIRE |