ATMEGA644P-15AT vs ATMEGA164P-15AT1 Comparison
Detailed side-by-side comparison of ATMEGA644P-15AT by Microchip Technology and ATMEGA164P-15AT1 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
ATMEGA164P-15AT1 - 8-bit AVR MCU, 16KB Flash, 44-TQFP | Microchip
ATMEGA164P-15AT1 ✓ ActiveSpecification Comparison
| Parameter | ATMEGA644P-15AT | ATMEGA164P-15AT1 |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Obsolete | Active |
| Core Architecture | AVR 8-bit enhanced RISC | 8-bit AVR RISC |
| Program Memory (Flash) | 64 KB (32K x 16) | — |
| SRAM | 4 KB | — |
| EEPROM | 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 | — |
| 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) | — |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) | — |
| AEC-Q100 Qualification | Grade 1 | — |
| RoHS Status | Compliant | — |
| In-System Programmable | Yes (Flash, Read-While-Write) | — |
| picoPower Technology | Yes | — |
| Core Speed | — | 16 MHz |
| Program Memory Size | — | 16 KB (8K x 16) Flash |
| Program Memory Type | — | ISP Flash with read-while-write |
| RAM Size | — | 1 KB (1K x 8) SRAM |
| EEPROM Size | — | 512 B |
| Number of I/O | — | 32 |
| Working Registers | — | 32 general purpose |
| Instructions | — | 131 powerful instructions |
| Oscillator Type | — | Internal |
| Package / Case | — | 44-TQFP (10x10 mm) |
| Packaging | — | Tape & Reel (TR) |
| Temperature Grade | — | Industrial |
| Low Power Technology | — | picoPower |
| Programming Interface | — | ICSP / in-circuit debug via RESET + 2 I/O pins |