ATMEGA1284P-PU vs ATMEGA644P-20PQ Comparison
Detailed side-by-side comparison of ATMEGA1284P-PU by Microchip Technology and ATMEGA644P-20PQ 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-20PQ - 8-bit AVR MCU 20MHz 64KB Flash DIP-40 | Microchip
ATMEGA644P-20PQ NrndSpecification Comparison
| Parameter | ATMEGA1284P-PU | ATMEGA644P-20PQ |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | NRND |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $6.05 | $7.40 |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit RISC |
| Flash Memory | 128 KB (64K x 16) ISP Flash | 64 KB (32K x 16) |
| SRAM | 16 KB | 4 KB (4K x 8) |
| EEPROM | 4 KB | 2 KB |
| Max Clock Frequency | 20 MHz | — |
| Supply Voltage Range | 1.8 V to 5.5 V | 2.7 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 |
| 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 | — |
| Maximum Clock Frequency | — | 20 MHz |
| Operating Voltage (20MHz) | — | 4.5 V to 5.5 V |
| Number of I/O | — | 32 |
| Oscillator Type | — | Internal RC |
| USARTs | — | 2 |
| Instruction Set | — | 131 instructions, mostly single-cycle |
| Processing Throughput | — | Up to 20 MIPS at 20 MHz (approx. 1 MIPS per MHz) |
| Temperature Range | — | Extended temperature (industrial) |
| Programming Features | — | In-System Programmable Flash, self-programming boot section, JTAG |
| Power Modes | — | Idle, Power-down, Power-save, Standby, Extended Standby (picoPower) |
| RoHS Status | — | Green (per FindIC listing) |