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 β ActiveSpecification Comparison
| Parameter | ATMEGA644P-15AT | ATMEGA164P-15AT1 |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Obsolete | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.74 | $3.60 |
| Core Architecture | 8-bit AVR enhanced RISC | 8-bit AVR RISC |
| Core Size | 8-bit | β |
| Program Memory Size | 64KB (32K x 16) Flash | 16 KB (8K x 16) Flash |
| Program Memory Type | FLASH (In-System Programmable, Read-While-Write) | ISP Flash with read-while-write |
| SRAM Size | 4KB | β |
| EEPROM Size | 2KB | 512 B |
| Clock Speed | 16 MHz | β |
| MIPS | Up to 1 MIPS per MHz (approx. 16 MIPS at 16 MHz) | β |
| Supply Voltage (VCC) | 5 V (family supports 2.5V/3.3V/5V variants) | β |
| GPIO Count | 32 general purpose I/O lines | β |
| ADC Resolution | 10-bit, 8 channels | β |
| USART Count | 2 | β |
| Serial Interfaces | 2x USART, TWI (I2C), SPI | β |
| Timers/Counters | 3 Timer/Counters with compare modes and PWM; Real Time Counter (RTC) | β |
| Package | 44-TQFP (10x10 mm) | β |
| Mounting Type | Surface Mount | Surface Mount |
| Qualification | AEC-Q100 grade 1 (per product qualification documentation) | β |
| Technology | picoPower low-power CMOS | β |
| Watchdog Timer | Yes, programmable with separate oscillator | β |
| Operating Temperature | [DATA_NEEDED: operating temperature range for -15AT suffix] | β |
| Core Speed | β | 16 MHz |
| RAM Size | β | 1 KB (1K x 8) SRAM |
| Number of I/O | β | 32 |
| Working Registers | β | 32 general purpose |
| Instructions | β | 131 powerful instructions |
| Oscillator Type | β | Internal |
| Package / Case | β | 44-TQFP (10x10 mm) |
| Packaging | β | Tape & Reel (TR) |
| Temperature Grade | β | Industrial |
| Low Power Technology | β | picoPower |
| Programming Interface | β | ICSP / in-circuit debug via RESET + 2 I/O pins |