ATMEGA644P-20PU vs ATMEGA644-20PU Comparison
Detailed side-by-side comparison of ATMEGA644P-20PU 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
ATMEGA644P-20PU - 8-bit AVR MCU 20MHz 64KB Flash | Microchip
ATMEGA644P-20PU ✓ ActiveMicrochip Technology
ATMEGA644-20PU - 8-bit AVR MCU 64KB 20MHz DIP-40 | Microchip
ATMEGA644-20PU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA644P-20PU | ATMEGA644-20PU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $8.55 | $7.40 |
| Core Architecture | AVR 8-bit RISC | 8-bit AVR enhanced RISC |
| Core Size | 8-bit | — |
| Max Clock Frequency | 20 MHz | — |
| Flash Memory | 64KB (32K x 16) | — |
| SRAM | 4KB | 4 KB |
| EEPROM | 2KB | 2 KB |
| I/O Count | 32 | — |
| ADC Channels | 8 channels, 10-bit | — |
| PWM Channels | 6 | — |
| Timers/Counters | 3 | — |
| Communication Interfaces | I2C, SPI, UART/USART (2 x USART) | — |
| Supply Voltage (max speed) | 5 V (4.5V to 5.5V) | — |
| Operating Temperature | -40C to +85C | -40 C to +85 C (industrial) |
| Package | 40-PDIP (0.600 inch width) | 40-PDIP (0.600 in, 15.24 mm) |
| Mounting Type | Through Hole | Through-Hole |
| Program Memory Type | ISP FLASH (read-while-write) | ISP FLASH (read-while-write) |
| Technology | picoPower low-power CMOS | — |
| RoHS Status | [DATA_NEEDED: RoHS compliance status] | Compliant (Green) |
| MSL Level | N/A (through-hole) | — |
| Program Memory Size | — | 64 KB (32K x 16) Flash |
| Maximum Clock Frequency | — | 20 MHz |
| Operating Voltage Range | — | 2.7 V to 5.5 V |
| General Purpose I/O | — | 32 I/O lines |
| USARTs | — | 2 |
| Timer/Counters | — | 3 (with compare modes and PWM) |
| 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) |