ATMEGA1284P-PU vs ATMEGA644P-20PU Comparison
Detailed side-by-side comparison of ATMEGA1284P-PU 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
ATMEGA1284P-PU - 128KB AVR MCU 20MHz 40-PDIP | Microchip
ATMEGA1284P-PU ✓ ActiveMicrochip Technology
ATMEGA644P-20PU - 8-bit AVR MCU 20MHz 64KB Flash | Microchip
ATMEGA644P-20PU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA1284P-PU | ATMEGA644P-20PU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $6.05 | $8.55 |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit RISC |
| Flash Memory | 128 KB (64K x 16) ISP Flash | 64KB (32K x 16) |
| SRAM | 16 KB | 4KB |
| EEPROM | 4 KB | 2KB |
| Max Clock Frequency | 20 MHz | 20 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V | — |
| GPIO Count | 32 general purpose I/O lines | — |
| ADC | 8-channel 10-bit | — |
| USART Count | 2 | — |
| Timer/Counters | 3 with compare modes and PWM | — |
| Serial Interfaces | 2x USART, TWI (I2C-compatible), SPI | — |
| Package | 40-PDIP (through-hole) | 40-PDIP (0.600 inch width) |
| Mounting Type | Through Hole | Through Hole |
| Special Features | picoPower, Real Time Counter, Read-While-Write Flash | — |
| Instruction Set Throughput | Up to 1 MIPS per MHz | — |
| Working Registers | 32 general purpose | — |
| Lifecycle Status | Active | — |
| Core Size | — | 8-bit |
| 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 |
| Program Memory Type | — | ISP FLASH (read-while-write) |
| Technology | — | picoPower low-power CMOS |
| RoHS Status | — | [DATA_NEEDED: RoHS compliance status] |
| MSL Level | — | N/A (through-hole) |