ATMEGA329A-AU vs ATMEGA169A-AU Comparison
Detailed side-by-side comparison of ATMEGA329A-AU by Microchip Technology and ATMEGA169A-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
ATMEGA329A-AU - 32KB AVR MCU, 20MHz, TQFP-64 | Microchip
ATMEGA329A-AU ✓ ActiveMicrochip Technology
ATMEGA169A-AU - 8-bit AVR MCU 16MHz 16KB Flash TQFP-64 | Microchip
ATMEGA169A-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA329A-AU | ATMEGA169A-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.31 | $2.98 |
| Core Architecture | 8-bit AVR RISC | — |
| Flash Memory | 32 KB ISP Flash (16K x 16) with read-while-write | 16 KB (8K x 16) ISP with read-while-write |
| SRAM | 2 KB | 1 KB |
| EEPROM | 1 KB | 512 B |
| Maximum Clock Frequency | 20 MHz | — |
| General Purpose I/O | 54 lines | 54 (TQFP-64 variant) |
| Working Registers | 32 general purpose | 32 x 8-bit general purpose |
| LCD Controller | On-chip LCD controller with internal contrast control | Segment LCD driver (up to 25 segments x 4 commons) |
| Debug/Programming Interface | JTAG (boundary-scan, on-chip debug, ISP programming) | — |
| Timers | Three flexible timers | Two 8-bit, one 16-bit, watchdog timer |
| Package | 64-TQFP (14x14 mm) | 64-TQFP, 14 x 14 mm, 1 mm height |
| Mounting Type | Surface Mount | Surface Mount |
| Temperature Grade | Industrial | — |
| RoHS Status | Green (compliant) | — |
| Supply Voltage Range | 2.5 V to 5.5 V (per ATmega329A family; see datasheet) | 2.7 V to 5.5 V |
| Product Family | AVR ATmega | — |
| Core | — | AVR 8-bit RISC |
| CPU Speed | — | 16 MHz (16 MIPS peak) |
| Instruction Set | — | 133 instructions, most single-cycle |
| ADC | — | 10-bit, 8 channels |
| Communication Interfaces | — | USART, SPI, TWI (I2C) |
| Debug / Boundary Scan | — | JTAG (IEEE 1149.1), on-chip debug |
| Operating Temperature | — | -40C to +85C (industrial) |
| Lifecycle Status | — | Active |