ATMEGA644P-20PQ vs ATMEGA644-20PU Comparison
Detailed side-by-side comparison of ATMEGA644P-20PQ 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-20PQ - 8-bit AVR MCU 20MHz 64KB Flash DIP-40 | Microchip
ATMEGA644P-20PQ NrndMicrochip Technology
ATMEGA644-20PU - 8-bit AVR MCU 64KB 20MHz DIP-40 | Microchip
ATMEGA644-20PU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA644P-20PQ | ATMEGA644-20PU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | NRND | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $7.40 | $7.40 |
| Core Architecture | AVR 8-bit RISC | 8-bit AVR enhanced RISC |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Flash Memory | 64 KB (32K x 16) | — |
| SRAM | 4 KB (4K x 8) | 4 KB |
| EEPROM | 2 KB | 2 KB |
| Supply Voltage Range | 2.7 V to 5.5 V | — |
| Operating Voltage (20MHz) | 4.5 V to 5.5 V | — |
| Number of I/O | 32 | — |
| Package | 40-PDIP | 40-PDIP (0.600 in, 15.24 mm) |
| Oscillator Type | Internal RC | — |
| USARTs | 2 | 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) | — |
| Mounting Type | Through Hole | Through-Hole |
| RoHS Status | Green (per FindIC listing) | Compliant (Green) |
| Program Memory Size | — | 64 KB (32K x 16) Flash |
| Program Memory Type | — | ISP FLASH (read-while-write) |
| Operating Voltage Range | — | 2.7 V to 5.5 V |
| General Purpose I/O | — | 32 I/O lines |
| 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) |
| Operating Temperature | — | -40 C to +85 C (industrial) |