ATMEGA328P-AU vs ATMEGA168-20AI Comparison
Detailed side-by-side comparison of ATMEGA328P-AU by Microchip Technology and ATMEGA168-20AI 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-AU - 8-bit AVR MCU 20MHz 32KB Flash TQFP-32 | Microchip
ATMEGA328P-AU ✓ ActiveMicrochip Technology
ATMEGA168-20AI - 8-bit AVR MCU 20MHz 16KB Flash | Microchip
ATMEGA168-20AI ✓ ActiveSpecification Comparison
| Parameter | ATMEGA328P-AU | ATMEGA168-20AI |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.74 | $1.85 |
| Core Architecture | AVR 8-bit RISC | 8-bit AVR RISC |
| CPU Speed | 20 MHz | — |
| Instruction Throughput | 20 MIPS | — |
| Flash Memory | 32 KB (16K x 16) | 16 KB (8K x 16) |
| SRAM | 2 KB | 1 KB |
| EEPROM | 1 KB | 512 B |
| Operating Voltage | 1.8 V to 5.5 V | — |
| Operating Temperature | -40 C to +85 C | -40C to +85C (industrial) |
| I/O Pins | 23 | — |
| Timers | 2 x 8-bit, 1 x 16-bit | — |
| PWM Channels | 6 | — |
| ADC | 8-channel 10-bit | — |
| Serial Interfaces | USART, SPI, I2C (TWI) | — |
| Package | TQFP-32 (7x7 mm, 0.8 mm pitch) | 32-TQFP (7x7 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | [DATA_NEEDED: MSL level] | — |
| RoHS Status | Compliant | — |
| Maximum Clock Frequency | — | 20 MHz |
| Supply Voltage Range | — | 2.7 V to 5.5 V |
| I/O Lines | — | 23 |
| ADC Resolution | — | 10-bit |
| ADC Channels | — | 8 |
| Timers/Counters | — | 2 x 8-bit, 1 x 16-bit |
| Communication Interfaces | — | USART, SPI, 2-wire (I2C-compatible) |
| Throughput | — | Up to 20 MIPS at 20 MHz |
| Instructions | — | 131 instructions, most single-cycle |
| On-chip Debug | — | debugWIRE |
| Programming | — | ISP (In-System Programming), self-programming Flash |