ATMEGA644P-20MU vs ATMEGA324P-20MU Comparison
Detailed side-by-side comparison of ATMEGA644P-20MU by Microchip Technology and ATMEGA324P-20MU 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-20MU - 8-bit AVR MCU 20MHz 64KB Flash | Microchip
ATMEGA644P-20MU NrndMicrochip Technology
ATMEGA324P-20MU - 8-bit AVR MCU 20MHz 32KB Flash | Microchip
ATMEGA324P-20MU β ActiveSpecification Comparison
| Parameter | ATMEGA644P-20MU | ATMEGA324P-20MU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Nrnd | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.02 | $3.80 |
| Core Architecture | AVR 8-bit enhanced RISC | β |
| Maximum Clock Frequency | 20 MHz | β |
| Flash Memory | 64 KB (32K x 16) | 32 KB (16K x 16) |
| SRAM | 4 KB | 2 KB |
| EEPROM | 2 KB | 1 KB |
| Supply Voltage | 4.5 V to 5.5 V (at 20 MHz) | β |
| USART Count | 2 | β |
| ADC | 10-bit, up to 8 channels | β |
| Interfaces | SPI, TWI (I2C-compatible), USART, JTAG | β |
| Package | 44-VQFN (7x7 mm) exposed pad | 44-VQFN (7x7 mm), exposed pad |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | Industrial range | -40C to +85C |
| MIPS Rating | Up to 20 MIPS (1 MIPS/MHz) | β |
| RoHS Status | Green / RoHS compliant | β |
| Product Status | Mature product; not recommended for new designs, replaced by ATmega644PA | β |
| Core Processor | β | AVR |
| Core Size | β | 8-Bit |
| Speed | β | 20 MHz |
| Supply Voltage Range | β | 4.5 V to 5.5 V |
| General Purpose I/O | β | 32 |
| Timers/Counters | β | 3 (with compare modes and PWM) |
| USART | β | 2 |
| ADC Resolution | β | 10-bit |
| Connectivity | β | I2C (TWI), SPI, UART/USART |
| Programmer Support | β | MPLAB SNAP (ICSP, in-circuit debug) |
| Technology | β | picoPower, AVR RISC, 131 instructions |