ATMEGA329P-20MU vs ATMEGA329P-20AU Comparison
Detailed side-by-side comparison of ATMEGA329P-20MU by Microchip Technology and ATMEGA329P-20AU 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
ATMEGA329P-20MU - 8-bit AVR MCU, 32KB Flash, 20MHz | Microchip
ATMEGA329P-20MU ✓ ActiveMicrochip Technology
ATMEGA329P-20AU - 20MHz 8-bit AVR MCU 32KB Flash TQFP-64
ATMEGA329P-20AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA329P-20MU | ATMEGA329P-20AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.78 | $4.71 |
| Core | 8-bit AVR RISC | — |
| Flash Program Memory | 32 KB (16K x 16) | — |
| SRAM | 2 KB | 2 KB (2K x 8) |
| EEPROM | 1 KB | 1 KB |
| Maximum CPU Clock | 20 MHz | — |
| Supply Voltage (Vcc) | 2.7 V to 5.5 V | 2.7 V to 5.5 V (10 MHz max below 4.5 V; 20 MHz requires 4.5-5.5 V) |
| General-Purpose I/O Pins | 54 | 54 |
| Package | 64-QFN / MLF (9 x 9 mm) with exposed pad | 64-pin TQFP (14x14 mm, 0.8 mm pitch) |
| Mounting Type | Surface Mount | Surface Mount |
| ADC | 8-channel, 10-bit | 10-bit, up to 8 single-ended channels |
| Timer/Counters | Two 8-bit + Two 16-bit with PWM | — |
| PWM Channels | 6 channels | 6 |
| Communication Interfaces | USART, SPI, TWI (I2C-compatible) | — |
| LCD Controller | Up to 4x32 segment driver (integrated) | — |
| On-chip Debug | JTAG | — |
| Operating Temperature Range | -40C to +85C (Industrial) | — |
| Instruction Set | 131 instructions, mostly single-cycle | 131 instructions, mostly single-cycle |
| Working Registers | 32 x 8-bit | — |
| Watchdog Timer | Yes, programmable | — |
| Brown-out Detector | Yes | — |
| Sleep Modes | 6 (Idle, Power-down, Power-save, Standby, Ext Standby, ADC Noise Reduction) | — |
| MSL Level | 3 (168 hours) | — |
| RoHS Status | Compliant (Green) | Compliant (Pb-free / Green) |
| Core Architecture | — | AVR (8-bit RISC, Harvard) |
| Program Memory (Flash) | — | 32 KB (16K x 16), In-System Programmable with RWW |
| Maximum Clock Speed | — | 20 MHz |
| Throughput | — | Up to 20 MIPS at 20 MHz |
| General-Purpose Working Registers | — | 32 |
| Communication Peripherals | — | 2x USART, 1x TWI (I2C), 1x SPI (also ISP) |
| Debug Interface | — | JTAG (IEEE 1149.1 compliant) |
| Operating Temperature | — | -40C to +85C (industrial, -A suffix) |
| Power-Save Modes | — | Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby (picoPower) |
| QTouch Support | — | Yes (peripheral touch controller via library) |