ATMEGA644P-20MU vs ATMEGA164P-20MU Comparison
Detailed side-by-side comparison of ATMEGA644P-20MU by Microchip Technology and ATMEGA164P-20MU 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-20MU - 8-bit AVR MCU 20MHz 64KB Flash | Microchip
ATMEGA644P-20MU NrndMicrochip Technology
ATMEGA164P-20MU - 8-bit AVR MCU 20MHz 16KB Flash | Microchip
ATMEGA164P-20MU β ActiveSpecification Comparison
| Parameter | ATMEGA644P-20MU | ATMEGA164P-20MU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Nrnd | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.02 | $2.98 |
| Core Architecture | AVR 8-bit enhanced RISC | β |
| Maximum Clock Frequency | 20 MHz | β |
| Flash Memory | 64 KB (32K x 16) | β |
| SRAM | 4 KB | β |
| EEPROM | 2 KB | β |
| Supply Voltage | 4.5 V to 5.5 V (at 20 MHz) | β |
| USART Count | 2 | β |
| ADC | 10-bit, up to 8 channels | 8-channel 10-bit |
| Interfaces | SPI, TWI (I2C-compatible), USART, JTAG | β |
| Package | 44-VQFN (7x7 mm) exposed pad | 44-VQFN (7x7 mm) with Exposed Pad |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | Industrial range | [DATA_NEEDED: operating temperature range] |
| MIPS Rating | Up to 20 MIPS (1 MIPS/MHz) | β |
| RoHS Status | Green / RoHS compliant | β |
| Product Status | Mature product; not recommended for new designs, replaced by ATmega644PA | β |
| Core Processor | β | AVR |
| Core Size | β | 8-Bit |
| Speed | β | 20 MHz |
| Program Memory Size | β | 16 KB (8K x 16) FLASH |
| EEPROM Size | β | 512 B |
| RAM Size | β | 1 KB SRAM |
| Supply Voltage Range | β | 2.7 V to 5.5 V |
| Number of I/O | β | 32 |
| Timers/Counters | β | 3 (with compare modes and PWM) |
| Communication Interfaces | β | 2x USART, TWI (I2C), SPI |
| RTC | β | Yes (real-time counter) |
| Instructions | β | 133 (advanced RISC, mostly single-cycle) |
| Low Power Technology | β | picoPower |
| Programming | β | ISP (In-System Programming), read-while-write |