ATMEGA644P-15AT vs ATMEGA164A-AU Comparison
Detailed side-by-side comparison of ATMEGA644P-15AT by Microchip Technology and ATMEGA164A-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
ATMEGA644P-15AT - 8-bit AVR MCU 64KB Flash 16MHz TQFP-44 | Microchip
ATMEGA644P-15AT ObsoleteMicrochip Technology
ATMEGA164A-AU - 8-bit AVR MCU, 16KB Flash, 20MHz, 44-TQFP
ATMEGA164A-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA644P-15AT | ATMEGA164A-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Obsolete | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.12 | $2.65 |
| Core Architecture | AVR 8-bit enhanced RISC | AVR 8-bit RISC |
| Program Memory (Flash) | 64 KB (32K x 16) | 16 KB (8K x 16) |
| SRAM | 4 KB | 1 KB |
| EEPROM | 2 KB | 512 B |
| 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 |
| USART | 2 (dual USART, 'P' variant) | — |
| SPI | 1 master/slave | — |
| TWI (I2C) | 1 byte-oriented | — |
| Timer/Counters | 3 with PWM and compare modes | — |
| Watchdog Timer | Yes, programmable | — |
| Package | 44-pin TQFP (10x10 mm) | 44-TQFP (10x10 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) |
| AEC-Q100 Qualification | Grade 1 | — |
| RoHS Status | Compliant | Compliant |
| In-System Programmable | Yes (Flash, Read-While-Write) | — |
| picoPower Technology | Yes | — |
| Maximum CPU Speed | — | 20 MHz (20 MIPS) |
| Supply Voltage | — | 2.7 V to 5.5 V (4.5V-5.5V at 20MHz) |
| General Purpose I/O | — | 32 |
| Timers/Counters | — | Two 8-bit, One 16-bit |
| PWM Channels | — | 6 |
| Communication Interfaces | — | 2x USART, SPI, I2C (TWI) |