ATMEGA644-20PU vs ATMEGA644P-20PU Comparison
Detailed side-by-side comparison of ATMEGA644-20PU by Microchip Technology and ATMEGA644P-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
ATMEGA644-20PU - 8-bit AVR MCU 64KB 20MHz DIP-40 | Microchip
ATMEGA644-20PU β ActiveMicrochip Technology
ATMEGA644P-20PU - 8-bit AVR MCU 20MHz 64KB Flash | Microchip
ATMEGA644P-20PU β ActiveSpecification Comparison
| Parameter | ATMEGA644-20PU | ATMEGA644P-20PU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $7.40 | $8.55 |
| Core Architecture | 8-bit AVR enhanced RISC | AVR 8-bit RISC |
| Program Memory Size | 64 KB (32K x 16) Flash | β |
| Program Memory Type | ISP FLASH (read-while-write) | ISP FLASH (read-while-write) |
| SRAM | 4 KB | 4KB |
| EEPROM | 2 KB | 2KB |
| Maximum Clock Frequency | 20 MHz | β |
| Operating Voltage Range | 2.7 V to 5.5 V | β |
| General Purpose I/O | 32 I/O lines | β |
| USARTs | 2 | β |
| Timer/Counters | 3 (with compare modes and PWM) | β |
| Serial Interfaces | SPI, TWI (I2C compatible) | β |
| ADC Resolution | 10-bit | β |
| JTAG | Yes (IEEE 1149.1 boundary scan, on-chip debug) | β |
| Sleep Modes | 5 (including power-down, power-save) | β |
| Package | 40-PDIP (0.600 in, 15.24 mm) | 40-PDIP (0.600 inch width) |
| Mounting Type | Through-Hole | Through Hole |
| Operating Temperature | -40 C to +85 C (industrial) | -40C to +85C |
| RoHS Status | Compliant (Green) | [DATA_NEEDED: RoHS compliance status] |
| Core Size | β | 8-bit |
| Max Clock Frequency | β | 20 MHz |
| Flash Memory | β | 64KB (32K x 16) |
| I/O Count | β | 32 |
| ADC Channels | β | 8 channels, 10-bit |
| PWM Channels | β | 6 |
| Timers/Counters | β | 3 |
| Communication Interfaces | β | I2C, SPI, UART/USART (2 x USART) |
| Supply Voltage (max speed) | β | 5 V (4.5V to 5.5V) |
| Technology | β | picoPower low-power CMOS |
| MSL Level | β | N/A (through-hole) |