ATMEGA168P-20PU vs ATMEGA328P-PU Comparison
Detailed side-by-side comparison of ATMEGA168P-20PU by Microchip Technology and ATMEGA328P-PU 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
ATMEGA168P-20PU - 8-Bit AVR MCU 20MHz 16KB Flash | Microchip
ATMEGA168P-20PU ✓ ActiveMicrochip Technology
ATMEGA328P-PU - 8-bit AVR MCU 32KB Flash 28-PDIP | Microchip
ATMEGA328P-PU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA168P-20PU | ATMEGA328P-PU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.05 | $0.00 |
| Core Processor | AVR 8-bit RISC | — |
| Core Size | 8-Bit | — |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Flash Memory | 16 KB (8K x 16) | — |
| SRAM | 1 KB | 2 KB |
| EEPROM | 512 B | 1 KB |
| Supply Voltage Range | 2.7 V to 5.5 V | 4.5 V to 5.5 V |
| Number of I/O | 23 | — |
| ADC Resolution | 10-bit | — |
| ADC Channels | 8 (6 on PDIP package) | — |
| Timers/Counters | 3 (two 8-bit, one 16-bit) | — |
| Communication Interfaces | USART, SPI, I2C (TWI) | — |
| Instructions | 133, most single-cycle | 131 instructions, most single-cycle |
| Operating Temperature | -40C to +85C (industrial) | [DATA_NEEDED: operating temperature range] |
| Package | 28-PDIP (0.300 inch, 7.62 mm) | 28-PDIP |
| Mounting Type | Through Hole | Through Hole |
| Programmability | ISP (In-System Programmable), debugWIRE | — |
| RoHS Status | Compliant (GREEN) | [DATA_NEEDED: RoHS status] |
| Lifecycle Status | Active (newer device ATMEGA168PA available) | — |
| MSL Rating | [DATA_NEEDED: MSL level] | — |
| Core Architecture | — | 8-bit AVR RISC |
| Flash Program Memory | — | 32 KB (16K x 16) |
| Typical Arduino Clock Frequency | — | 16 MHz |
| General Purpose I/O Lines | — | 23 |
| Working Registers | — | 32 general purpose |
| In-System Programming | — | Yes (ISP, read-while-write) |
| ADC | — | 10-bit |
| Product Series | — | AVR ATmega |
| Interface Peripherals | — | USART, SPI, TWI (I2C) |