ATMEGA644PA-AU vs ATMEGA1284P-AU Comparison
Detailed side-by-side comparison of ATMEGA644PA-AU by Microchip Technology and ATMEGA1284P-AU 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-AU - 8-bit AVR MCU, 20MHz, 64KB Flash | Microchip
ATMEGA644PA-AU ✓ ActiveMicrochip Technology
ATMEGA1284P-AU - 8-bit AVR MCU 128KB Flash 20MHz TQFP-44
ATMEGA1284P-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA644PA-AU | ATMEGA1284P-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.61 | $4.65 |
| Core Architecture | AVR 8-bit RISC | 8-bit AVR RISC |
| Family | ATmega | — |
| Series | ATmega644P / picoPower | — |
| Maximum Clock Frequency | 20 MHz | — |
| Program Memory (Flash) | 64 KB (32K x 16) | 128 KB |
| SRAM | 4 KB | 16 KB |
| EEPROM | 2 KB | 4 KB |
| Supply Voltage Range | 1.8 V to 5.5 V | — |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) |
| GPIO Pins | 32 | — |
| ADC | 8-channel, 10-bit | 10-bit, 8-channel |
| USART | 2 | 2 |
| I2C (TWI) | 1 | — |
| SPI | 1 | 1 |
| Timer/Counters | 3 (with PWM and compare modes) | 2x 8-bit, 2x 16-bit |
| Package | 44-pin TQFP (10x10 mm) | TQFP-44 (10x10 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| MIPS | 20 MIPS at 20 MHz | — |
| Programming Interface | ISP / ICSP / JTAG / debugWIRE | — |
| RoHS Status | Compliant | Compliant |
| Maximum CPU Speed | — | 20 MHz |
| Operating Voltage Range | — | 1.8 V to 5.5 V |
| I/O Pins | — | 32 |
| General-Purpose Registers | — | 32 |
| TWI (I2C) | — | 1 |
| PWM Channels | — | 6 |
| 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) |