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