ATMEGA32U4 vs ATMEGA16U4-AU Comparison
Detailed side-by-side comparison of ATMEGA32U4 by Microchip Technology and ATMEGA16U4-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
ATMEGA32U4 - 8-bit AVR MCU, 32KB Flash, USB 2.0 | Microchip
ATMEGA32U4 ✓ ActiveMicrochip Technology
ATMEGA16U4-AU - 8-Bit AVR MCU 16KB Flash USB 16MHz | Microchip
ATMEGA16U4-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA32U4 | ATMEGA16U4-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.72 | $2.19 |
| Architecture | AVR enhanced RISC, 8-bit | — |
| Program Memory (Flash) | 32 KB (16K x 16), In-System Programmable | — |
| SRAM | 2.5 KB | 2.5 KB |
| EEPROM | 1 KB | 1 KB (1024 B) |
| General Purpose I/O Lines | 26 | — |
| General Purpose Working Registers | 32 | — |
| Maximum Clock Frequency | 16 MHz | — |
| Throughput | Up to 16 MIPS (1 MIPS per MHz) | — |
| USB Interface | USB 2.0 full-speed / low-speed device, on-chip transceiver | — |
| ADC | 12-channel, 10-bit | 12-channel, 10-bit |
| Timer/Counters | 4 flexible + 1 high-speed (compare modes, PWM) | — |
| Communication Interfaces | 1x USART, 1x SPI, 1x I2C (TWI) | — |
| JTAG Interface | Yes (on-chip debug) | Yes, on-chip debug |
| Operating Voltage | 2.7 V to 5.5 V | — |
| Operating Temperature | -40 C to +85 C | [DATA_NEEDED: Operating temperature range] |
| Package | 44-pin TQFP (10x10 mm) | 44-TQFP (10x10 mm) |
| RoHS Status | Compliant (per ATMEGA32U4-AU DigiKey listing) | — |
| Programming Method | ISP via SPI, JTAG, USB bootloader | — |
| Core Processor | — | AVR 8-bit RISC |
| Core Size | — | 8-bit |
| Speed | — | 16 MHz |
| Flash Memory | — | 16 KB (8K x 16) |
| Boot Flash Section | — | 8 KB |
| Supply Voltage Range | — | 2.7 V to 5.5 V |
| USB Controller | — | USB 2.0 full-speed / low-speed device |
| Peripherals | — | High-speed PWM, USB, JTAG, brown-out detect, power-on reset |
| Instruction Set | — | 133 powerful instructions, most single-cycle |
| Mounting Type | — | Surface Mount |
| Life Cycle Stage | — | Active |
| Number of I/O | — | [DATA_NEEDED: Number of I/O pins] |