ATMEGA328P-ANR vs ATMEGA328-AU Comparison
Detailed side-by-side comparison of ATMEGA328P-ANR by Microchip Technology and ATMEGA328-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
ATMEGA328P-ANR - 8-Bit 20MHz AVR MCU 32KB Flash | Microchip (Tape & Reel)
ATMEGA328P-ANR ✓ ActiveMicrochip Technology
ATMEGA328-AU - 8-bit AVR MCU 20MHz 32KB Flash TQFP-32 | Microchip (Tape & Reel)
ATMEGA328-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA328P-ANR | ATMEGA328-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Product Type | 8-bit AVR RISC-based microcontroller | — |
| Maximum Clock Frequency | 20 MHz | — |
| Flash Memory | 32 KB (16K × 16) | 32 KB (16K x 16) |
| SRAM | 2 KB | 2 KB |
| EEPROM | 1 KB | 1 KB |
| General-Purpose I/O Lines | 23 | — |
| General-Purpose Working Registers | 32 | — |
| Timer/Counter Count | 3 | — |
| Timer/Counter Features | Compare modes | — |
| Serial Communication | USART | — |
| Two-Wire Interface | Byte-oriented | — |
| Interrupt Support | Internal and external interrupts | — |
| Operating Temperature | 105°C | -40C to +85C |
| Package | 32-TQFP (7 mm × 7 mm) | 32-TQFP (7x7 mm) |
| Mounting Type | Surface mount | Surface Mount |
| Programming | In-system programmable ISP Flash | — |
| Flash Read-While-Write | Supported | — |
| Core Architecture | AVR 8-bit RISC | — |
| Pricing Reference | LCSC price from $3.3765 as of 2026-10-21 | — |
| Core Processor | — | AVR 8-bit RISC |
| Core Size | — | 8-bit |
| Speed | — | 20 MHz |
| Number of I/O | — | 23 |
| ADC Resolution | — | 10-bit |
| Number of ADC Channels | — | 8 (TQFP-32) |
| Timers/Counters | — | 2 x 8-bit, 1 x 16-bit |
| Communication Interfaces | — | USART, SPI, TWI (I2C) |
| Supply Voltage Range | — | 2.5 V to 5.5 V |
| Packaging | — | Tape & Reel (R suffix) |
| Programmability | — | In-System Programmable (ISP), read-while-write |
| RoHS Status | — | Compliant |