ATMEGA32U4-AUR vs ATMEGA32U4-AU Comparison
Detailed side-by-side comparison of ATMEGA32U4-AUR by Microchip Technology and ATMEGA32U4-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-AU - 8-bit AVR MCU, 16MHz, 32KB Flash, USB | Microchip
ATMEGA32U4-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA32U4-AUR | ATMEGA32U4-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.20 | $4.25 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Flash Program Memory | 32 KB (16K x 16), self-programming ISP | 32 KB (16K x 16) |
| SRAM | 2.5 KB | 2.5 KB |
| EEPROM | 1 KB | 1 KB |
| Maximum Clock Frequency | 16 MHz | — |
| Throughput | 16 MIPS at 16 MHz | 16 MIPS at 16 MHz |
| Instructions | 131 powerful instructions, most single-cycle | — |
| USB Interface | USB 2.0 full-speed/low-speed device with on-chip transceiver | — |
| ADC | 12-channel, 10-bit | 12-channel, 10-bit |
| Debug Interface | JTAG for on-chip debug | JTAG / debugWIRE |
| Operating Voltage Range | 2.7 V to 5.5 V | — |
| Package | 44-TQFP (10x10 mm) | 44-pin TQFP (10x10 mm, 0.8 mm pitch) |
| Mounting Type | Surface Mount | Surface Mount |
| Temperature Range | Industrial (-40C to +85C) | — |
| RoHS Status | Compliant (lead-free, green) | Compliant |
| Packaging | Tape & Reel (R suffix) | — |
| Instruction Set | AVR | 131 instructions, mostly single-cycle |
| CPU Speed | — | 16 MHz |
| 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 |
| Timers | — | 4 (2x 8-bit, 2x 16-bit) |
| Communication | — | USB, USART, SPI, TWI (I2C) |
| Operating Temperature | — | -40 C to +85 C (industrial) |