ATMEGA644PA-PU vs ATMEGA644-20PU Comparison
Detailed side-by-side comparison of ATMEGA644PA-PU by Microchip Technology and ATMEGA644-20PU 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-PU - 8-bit AVR MCU 20MHz 64KB Flash DIP-40 | Microchip
ATMEGA644PA-PU ✓ ActiveMicrochip Technology
ATMEGA644-20PU - 8-bit AVR MCU 64KB 20MHz DIP-40 | Microchip
ATMEGA644-20PU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA644PA-PU | ATMEGA644-20PU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.15 | $7.40 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR enhanced RISC |
| Core Series | AVR ATmega | — |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Flash Memory | 64 KB (32K x 16) | — |
| SRAM | 4 KB | 4 KB |
| EEPROM | 2 KB | 2 KB |
| General Purpose I/O Lines | 32 | — |
| Working Registers | 32 | — |
| ADC | 8-channel, 10-bit | — |
| USART Interfaces | 2 | — |
| Two-Wire Interface | Yes (byte-oriented, I2C-compatible) | — |
| Timer/Counters | 3, with compare modes and PWM | 3 (with compare modes and PWM) |
| Low Power Technology | picoPower | — |
| Package | 40-PDIP (0.600 in, 15.24 mm) | 40-PDIP (0.600 in, 15.24 mm) |
| Mounting Type | Through Hole | Through-Hole |
| Operating Voltage Range | [DATA_NEEDED: operating voltage range] | 2.7 V to 5.5 V |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] | — |
| RoHS Status | [DATA_NEEDED: RoHS status] | Compliant (Green) |
| Program Memory Size | — | 64 KB (32K x 16) Flash |
| Program Memory Type | — | ISP FLASH (read-while-write) |
| General Purpose I/O | — | 32 I/O lines |
| USARTs | — | 2 |
| Serial Interfaces | — | SPI, TWI (I2C compatible) |
| ADC Resolution | — | 10-bit |
| JTAG | — | Yes (IEEE 1149.1 boundary scan, on-chip debug) |
| Sleep Modes | — | 5 (including power-down, power-save) |
| Operating Temperature | — | -40 C to +85 C (industrial) |