ATMEGA168-20AI vs ATMEGA168PA-AU Comparison
Detailed side-by-side comparison of ATMEGA168-20AI by Microchip Technology and ATMEGA168PA-AU 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
ATMEGA168-20AI - 8-bit AVR MCU 20MHz 16KB Flash | Microchip
ATMEGA168-20AI ✓ ActiveMicrochip Technology
ATMEGA168PA-AU - 8-bit AVR MCU 20MHz 16KB Flash TQFP-32 | Microchip
ATMEGA168PA-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA168-20AI | ATMEGA168PA-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.85 | $0.98 |
| Core Architecture | 8-bit AVR RISC | AVR RISC |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Flash Memory | 16 KB (8K x 16) | 16 KB (8K x 16) |
| SRAM | 1 KB | 1 KB |
| EEPROM | 512 B | 512 B |
| Supply Voltage Range | 2.7 V to 5.5 V | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C |
| I/O Lines | 23 | — |
| ADC Resolution | 10-bit | 10-bit |
| ADC Channels | 8 | 6 (8 in TQFP: ADC6/ADC7) |
| Timers/Counters | 2 x 8-bit, 1 x 16-bit | 2 x 8-bit, 1 x 16-bit |
| Communication Interfaces | USART, SPI, 2-wire (I2C-compatible) | USART, SPI, TWI (I2C) |
| Package | 32-TQFP (7x7 mm) | 32-TQFP (7x7 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| 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 | — |
| Core Size | — | 8-bit |
| Number of I/O Lines | — | 23 |
| Low Power Technology | — | picoPower |
| In-System Programming | — | Yes (ISP, read-while-write) |
| RoHS Status | — | Compliant |