ATMEGA3290P-20AU vs ATMEGA329P-20AU Comparison
Detailed side-by-side comparison of ATMEGA3290P-20AU 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
ATMEGA3290P-20AU - AVR 8-Bit MCU 20MHz 32KB Flash TQFP-100 | Microchip
ATMEGA3290P-20AU β ActiveMicrochip Technology
ATMEGA329P-20AU - 20MHz 8-bit AVR MCU 32KB Flash TQFP-64
ATMEGA329P-20AU β ActiveSpecification Comparison
| Parameter | ATMEGA3290P-20AU | ATMEGA329P-20AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $9.62 | $4.71 |
| Core Processor | AVR | β |
| Core Size | 8-Bit | β |
| Speed | 20 MHz | β |
| Flash Memory | 32 KB (16K x 16) | β |
| SRAM | 2 KB | 2 KB (2K x 8) |
| EEPROM | 1 KB | 1 KB |
| General Purpose I/O | 69 | β |
| Working Registers | 32 | β |
| Instruction Set | 131 powerful instructions | 131 instructions, mostly single-cycle |
| Supply Voltage | 4.5 V to 5.5 V | β |
| Package | 100-TQFP (14x14 mm, 0.8 mm pitch) | 64-pin TQFP (14x14 mm, 0.8 mm pitch) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial, -A suffix) |
| Low Power Technology | picoPower | β |
| Programming / Debug | ICSP, debugWIRE (via MPLAB SNAP) | β |
| LCD Controller | Yes (segment LCD drive) | β |
| Lifecycle Status | ACTIVE | β |
| Core Architecture | β | AVR (8-bit RISC, Harvard) |
| Program Memory (Flash) | β | 32 KB (16K x 16), In-System Programmable with RWW |
| Maximum Clock Speed | β | 20 MHz |
| Throughput | β | Up to 20 MIPS at 20 MHz |
| Supply Voltage (Vcc) | β | 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 | β | 54 |
| General-Purpose Working Registers | β | 32 |
| ADC | β | 10-bit, up to 8 single-ended channels |
| PWM Channels | β | 6 |
| Communication Peripherals | β | 2x USART, 1x TWI (I2C), 1x SPI (also ISP) |
| Debug Interface | β | JTAG (IEEE 1149.1 compliant) |
| RoHS Status | β | Compliant (Pb-free / Green) |
| Power-Save Modes | β | Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby (picoPower) |
| QTouch Support | β | Yes (peripheral touch controller via library) |