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