ATMEGA32U4-AU vs ATMEGA16U4-AUR Comparison
Detailed side-by-side comparison of ATMEGA32U4-AU by Microchip Technology and ATMEGA16U4-AUR 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-AU - 8-bit AVR MCU, 16MHz, 32KB Flash, USB | Microchip
ATMEGA32U4-AU ✓ ActiveMicrochip Technology
ATMEGA16U4-AUR - 8-Bit AVR MCU 16KB Flash USB 2.0 | Microchip
ATMEGA16U4-AUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA32U4-AU | ATMEGA16U4-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.25 | $2.90 |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit RISC |
| CPU Speed | 16 MHz | — |
| Throughput | 16 MIPS at 16 MHz | — |
| Flash Program Memory | 32 KB (16K x 16) | — |
| SRAM | 2.5 KB | 2.5 KB |
| EEPROM | 1 KB | 1 KB |
| Supply Voltage | 2.7 V to 5.5 V (verified 4.5-5.5V in some sources; full range per datasheet) | — |
| I/O Pins | 32 programmable | — |
| USB | USB 2.0 full-speed / low-speed device, on-chip transceiver | — |
| ADC | 12-channel, 10-bit | — |
| Timers | 4 (2x 8-bit, 2x 16-bit) | — |
| Communication | USB, USART, SPI, TWI (I2C) | — |
| Debug Interface | JTAG / debugWIRE | JTAG (on-chip debug) |
| Package | 44-pin TQFP (10x10 mm, 0.8 mm pitch) | 44-TQFP (10x10 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40 C to +85 C (industrial) | -40C to +85C (Industrial) |
| Instruction Set | 131 instructions, mostly single-cycle | — |
| RoHS Status | Compliant | Green / Compliant |
| Core Size | — | 8-bit |
| Program Memory Size | — | 16 KB (8K x 16) FLASH |
| Boot Code Section | — | 8 KB |
| Maximum Clock Frequency | — | 16 MHz |
| Maximum Throughput | — | 16 MIPS at 16 MHz |
| Supply Voltage Range | — | 2.7 V to 5.5 V |
| USB Interface | — | USB 2.0 full-speed/low-speed device |
| ADC Resolution | — | 10-bit |
| ADC Channels | — | 12 channels |
| Timers / PWM | — | High-speed PWM |