ATMEGA1281V-8MUR vs ATMEGA164A-MCHR Comparison
Detailed side-by-side comparison of ATMEGA1281V-8MUR by Microchip Technology and ATMEGA164A-MCHR 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
ATMEGA1281V-8MUR - 8-bit AVR MCU 128KB Flash 8MHz | Microchip
ATMEGA1281V-8MUR ✓ ActiveMicrochip Technology
ATMEGA164A-MCHR - 8-bit AVR MCU 16KB Flash 20MHz QFN-44 | Microchip
ATMEGA164A-MCHR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA1281V-8MUR | ATMEGA164A-MCHR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit RISC |
| Clock Speed | 8 MHz | — |
| Flash Memory | 128 KB (64K x 16), ISP | 16 KB (8K x 16) ISP Flash |
| SRAM | 8 KB | 1 KB |
| EEPROM | 4 KB | 512 B |
| Supply Voltage Range | 1.8 V to 5.5 V | 2.7 V to 5.5 V |
| Instruction Set | 133 instructions, most single-cycle | 133 instructions, mostly single-cycle |
| General Purpose I/O | 54 lines | 32 I/O lines |
| Timers/Counters | Six flexible timers with compare modes and PWM | — |
| Serial USART | Four programmable USARTs | — |
| ADC | 8/16-channel, 10-bit | — |
| Serial Interfaces | SPI (master/slave), 2-wire serial (I2C-compatible) | — |
| Debug / Programming | JTAG on-chip debug, In-Circuit Serial Programming (ICSP) | — |
| Watchdog Timer | Programmable WDT with separate on-chip oscillator | — |
| Analog Comparator | On-chip analog comparator | — |
| Operating Temperature | -40C to +85C (industrial) | — |
| Package | 64-QFN (9x9 mm), VQFN with exposed pad (MLF) | 44-QFN (MLF) 5x5 mm |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | Compliant (green package per FindIC listing) | [DATA_NEEDED: RoHS compliance status] |
| Lifecycle Status | Active | Active |
| Maximum Clock Frequency | — | 20 MHz |
| General Purpose Working Registers | — | 32 registers |
| Throughput | — | Up to 1 MIPS per MHz |
| Operating Temperature (Max) | — | 85 C |
| Packaging | — | Tape and Reel (R suffix) |
| Programming | — | In-System Programmable (ISP), read-while-write |
| Debug Interface | — | In-Circuit Debug via MPLAB SNAP (ICSP) |