ATMEGA644PA-AUR vs ATMEGA1284P-AUR Comparison
Detailed side-by-side comparison of ATMEGA644PA-AUR by Microchip Technology and ATMEGA1284P-AUR 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
ATMEGA644PA-AUR - 8-Bit AVR MCU 64KB Flash 20MHz TQFP-44 | Microchip
ATMEGA644PA-AUR ✓ ActiveMicrochip Technology
ATMEGA1284P-AUR - 8-bit AVR MCU 128KB Flash 20MHz TQFP-44 (Tape & Reel)
ATMEGA1284P-AUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA644PA-AUR | ATMEGA1284P-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Core Architecture | 8-bit AVR RISC (Harvard) | 8-bit AVR RISC |
| Flash Memory (ISP) | 64 KB (32K x 16) with read-while-write | — |
| SRAM | 4 KB | 16 KB |
| EEPROM | 2 KB | 4 KB |
| Maximum Clock Frequency | 20 MHz | — |
| Maximum Throughput | 20 MIPS (1 MIPS per MHz) | — |
| Instructions | 131 instructions, mostly single-clock cycle | — |
| Hardware Multiplier | On-chip 2-cycle multiplier | — |
| General Purpose I/O | 32 lines | — |
| Working Registers | 32 general purpose | — |
| Timers/Counters | 3 flexible timer/counters with compare modes and PWM | — |
| USART | 2 | 2 |
| Serial Interfaces | TWI (I2C-compatible), SPI | — |
| ADC | 8-channel 10-bit | 10-bit, 8-channel |
| Real-Time Counter | Yes | — |
| Supply Voltage | 2.5 V / 3.3 V / 5 V operation | — |
| Package | 44-TQFP (10 x 10 mm) | TQFP-44 (10x10 mm) |
| Low Power Technology | picoPower | — |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (T/R) | — |
| RoHS Status | Compliant (GREEN) | Compliant |
| Program Memory (Flash) | — | 128 KB |
| Maximum CPU Speed | — | 20 MHz |
| Operating Voltage Range | — | 1.8 V to 5.5 V |
| I/O Pins | — | 32 |
| General-Purpose Registers | — | 32 |
| SPI | — | 1 |
| TWI (I2C) | — | 1 |
| Timer/Counters | — | 2x 8-bit, 2x 16-bit |
| PWM Channels | — | 6 |
| Operating Temperature | — | -40C to +85C (industrial) |
| In-System Programming | — | Yes (SPI) |
| JTAG Debug | — | Yes (IEEE 1149.1) |
| Power-Down Current | — | [DATA_NEEDED: power-down current in nA] |
| MSL Level | — | 3 (per JEDEC J-STD-020) |