ATMEGA1284-PU vs ATMEGA644P-20PQ Comparison
Detailed side-by-side comparison of ATMEGA1284-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
ATMEGA1284-PU - 8-bit AVR MCU 128KB Flash 20MHz PDIP-40 | Microchip
ATMEGA1284-PU ✓ ActiveMicrochip Technology
ATMEGA644P-20PQ - 8-bit AVR MCU 20MHz 64KB Flash DIP-40 | Microchip
ATMEGA644P-20PQ NrndSpecification Comparison
| Parameter | ATMEGA1284-PU | ATMEGA644P-20PQ |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | NRND |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $6.21 | $7.40 |
| Core Architecture | AVR enhanced RISC, 8-bit | AVR 8-bit RISC |
| Flash Program Memory | 128KB (64K x 16) | — |
| SRAM | 16KB | 4 KB (4K x 8) |
| EEPROM | 4KB | 2 KB |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Supply Voltage Range | 2.5V to 5.5V (speed-graded) | 2.7 V to 5.5 V |
| I/O Pins | 32 general purpose I/O lines | — |
| ADC | 8-channel, 10-bit | — |
| Timers | 2 x 8-bit, 1 x 16-bit | — |
| USART | 2 | — |
| Serial Interfaces | SPI, 2-Wire (I2C), USART | — |
| JTAG | Yes (Port C, on-chip debug and boundary-scan) | — |
| Instructions | 133 instructions, most single-cycle | — |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | — |
| Package | 40-PDIP | 40-PDIP |
| Mounting Type | Through Hole | Through Hole |
| RoHS Status | [DATA_NEEDED: RoHS status] | Green (per FindIC listing) |
| Flash Memory | — | 64 KB (32K x 16) |
| 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) |