ATMEGA644PA-MU vs ATMEGA644P-15AT Comparison
Detailed side-by-side comparison of ATMEGA644PA-MU by Microchip Technology and ATMEGA644P-15AT 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-MU - 8-bit AVR MCU 64KB 20MHz VQFN-44 | Microchip
ATMEGA644PA-MU ✓ ActiveMicrochip Technology
ATMEGA644P-15AT - 8-bit AVR MCU 64KB Flash 16MHz TQFP-44 | Microchip
ATMEGA644P-15AT ObsoleteSpecification Comparison
| Parameter | ATMEGA644PA-MU | ATMEGA644P-15AT |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Obsolete |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.78 | $4.12 |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit enhanced RISC |
| Core Frequency | 20 MHz | — |
| Flash Memory | 64 KB (32K x 16) ISP Flash, read-while-write | — |
| EEPROM | 2 KB | 2 KB |
| SRAM | 4 KB | 4 KB |
| GPIO Count | 32 | — |
| MIPS Throughput | Up to 20 MIPS at 20 MHz | — |
| Instructions | 131 instructions, most single-cycle | — |
| Timer/Counters | Three flexible timer/counters with compare modes and PWM | 3 with PWM and compare modes |
| USART | Two programmable serial USARTs | 2 (dual USART, 'P' variant) |
| Serial Interfaces | Two-Wire Interface (I2C-compatible), SPI | — |
| ADC | 8-channel 10-bit ADC | 8-channel, 10-bit, with differential mode |
| RTC | Real Time Counter with separate oscillator | — |
| Low Power Technology | picoPower | — |
| Supply Voltage Range | 2.5 V / 3.3 V / 5 V class (per distributor listing: 2.5V/3.3V/5V) | — |
| Package | 44-VQFN (7x7 mm), exposed pad | 44-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | RoHS compliant (per Microchip product listing) | Compliant |
| Data Sheet Document Number | DS40002070A (per Microchip ATMEGA644PA-MU data sheet) | — |
| Program Memory (Flash) | — | 64 KB (32K x 16) |
| Maximum Clock Frequency | — | 16 MHz (at 5V) |
| Throughput | — | Up to 1 MIPS per MHz (16 MIPS peak) |
| Operating Voltage (VCC) | — | 2.7 V to 5.5 V |
| General-Purpose I/O Lines | — | 32 |
| SPI | — | 1 master/slave |
| TWI (I2C) | — | 1 byte-oriented |
| Watchdog Timer | — | Yes, programmable |
| Operating Temperature | — | -40C to +85C (industrial) |
| AEC-Q100 Qualification | — | Grade 1 |
| In-System Programmable | — | Yes (Flash, Read-While-Write) |
| picoPower Technology | — | Yes |