ATMEGA328P-PU vs ATMEGA168-20PU Comparison
Detailed side-by-side comparison of ATMEGA328P-PU by Microchip Technology and ATMEGA168-20PU 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
ATMEGA328P-PU - 8-bit AVR MCU 32KB Flash 28-PDIP | Microchip
ATMEGA328P-PU ✓ ActiveMicrochip Technology
ATMEGA168-20PU - 8-bit AVR MCU 16KB Flash 20MHz PDIP-28 | Microchip
ATMEGA168-20PU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA328P-PU | ATMEGA168-20PU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Core Architecture | 8-bit AVR RISC | — |
| Flash Program Memory | 32 KB (16K x 16) | — |
| EEPROM | 1 KB | 512 B |
| SRAM | 2 KB | 1 KB |
| Maximum Clock Frequency | 20 MHz | — |
| Typical Arduino Clock Frequency | 16 MHz | — |
| Supply Voltage Range | 4.5 V to 5.5 V | 2.7 V to 5.5 V |
| General Purpose I/O Lines | 23 | — |
| Working Registers | 32 general purpose | 32 x 8-bit |
| Instructions | 131 instructions, most single-cycle | — |
| Package | 28-PDIP | 28-PDIP (0.300 inch, 7.62 mm) |
| Mounting Type | Through Hole | Through Hole |
| In-System Programming | Yes (ISP, read-while-write) | — |
| ADC | 10-bit | — |
| Product Series | AVR ATmega | — |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | [DATA_NEEDED: operating temperature range] |
| Interface Peripherals | USART, SPI, TWI (I2C) | — |
| RoHS Status | [DATA_NEEDED: RoHS status] | [DATA_NEEDED: RoHS status] |
| Core Processor | — | AVR 8-bit RISC |
| Core Size | — | 8-Bit |
| Max Clock Speed | — | 20 MHz |
| Flash Memory | — | 16 KB (8K x 16) |
| General Purpose I/O | — | 23 |
| ADC Resolution | — | 10-bit |
| ADC Channels (PDIP) | — | 6 |
| Communication Interfaces | — | USART, SPI, I2C (TWI) |
| Timers | — | 2 x 8-bit, 1 x 16-bit |
| Instruction Set | — | 133 instructions, most single-cycle |
| Debug Interface | — | debugWIRE |