ATXMEGA256A3BU-MH vs ATXMEGA128A4U-AUR Comparison
Detailed side-by-side comparison of ATXMEGA256A3BU-MH by Microchip Technology and ATXMEGA128A4U-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
ATXMEGA256A3BU-MH - 256KB Flash 32MHz AVR XMEGA MCU | Microchip
ATXMEGA256A3BU-MH ✓ ActiveMicrochip Technology
ATXMEGA128A4U-AUR - 8/16-bit AVR XMEGA MCU, 128KB Flash, 44-TQFP | Microchip
ATXMEGA128A4U-AUR ✓ ActiveSpecification Comparison
| Parameter | ATXMEGA256A3BU-MH | ATXMEGA128A4U-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $6.55 | $5.45 |
| Core Architecture | AVR XMEGA (8/16-bit RISC) | AVR XMEGA 8/16-bit RISC |
| Family | AVR XMEGA A3BU | ATxmega A4U |
| Program Memory (Flash) | 256 KB (128K x16) | 128 KB (64K x 16) |
| Boot Code Section | 8 KB | 4 KB |
| SRAM | 16 KB | 8 KB |
| EEPROM | 4 KB | 2 KB (2048 bytes) |
| Maximum CPU Speed | 32 MHz | 32 MHz |
| Supply Voltage (VCC) | 2.7 V to 3.6 V | — |
| I/O Pins | 34 | — |
| ADC | Dual 12-bit, up to 2 Msps | — |
| DAC | 2 x 12-bit | — |
| DMA Channels | 4 | 4 |
| Event System Channels | 8 | 8 |
| RTC | 32-bit RTC with Battery Backup (VBAT) | — |
| Crypto Engine | AES / DES | — |
| Package | 64-pin QFN (9x9 mm), 0.5 mm pitch | 44-pin TQFP (10x10 mm) |
| Operating Temperature | -40 C to +85 C (industrial) | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS | Compliant | — |
| Programming/Debug | PDI (Programming and Debug Interface) | — |
| Throughput | — | 32 MIPS |
| Operating Voltage | — | 1.6 V to 3.6 V |
| ADC Resolution | — | 12-bit |
| DAC Resolution | — | 12-bit |
| USB Interface | — | USB 2.0 Full-Speed Device/Host |
| External Bus Interface | — | Yes |
| MSL Level | — | 3 (168 hours) |
| RoHS Status | — | Compliant |