| Parameter |
Value |
| FPU |
No |
| DAC Resolution (bits) |
16 |
| SPI |
6 |
| Max I/O Pins |
69 |
| Self Program Memory |
YES |
| Max. Operating Frequency |
66 MHz |
| ADC Resolution (bits) |
10 |
| Video Decoder |
No |
| # of Touch Channels |
32 |
| USB Interface |
Device + OTG |
| Ethernet |
1 |
| USB Transceiver |
1 |
| Crypto Engine |
No |
| Hardware QTouch Acquisition |
No |
| Ext Interrupts |
69 |
| Operating Voltage (Vcc) |
3.0-3.6 or (1.65-1.95+3.0-3.6) |
| PWM Channels |
13 |
| Camera Interface |
No |
| Graphic LCD |
No |
| SSC |
1 |
| I/O Supply Class |
3.0-3.6 or (1.65-1.95+3.0-3.6) |
| Flash (Kbytes) |
256 Kbytes |
| External Bus Interface |
0 |
| Resistive Touch Screen |
No |
| UART |
4 |
| CPU |
32-bit AVR |
| Pin Count |
100 |
| Temp. Range (deg C) |
-40 to 85 |
| Timers |
10 |
| 32kHz RTC |
Yes |
| USB Speed |
Full Speed |
| ADC channels |
8 |
| DRAM Memory |
No |
| DAC Channels |
2 |
| SRAM (Kbytes) |
64 |
| ADC Speed (ksps) |
384 |
| Calibrated RC Oscillator |
Yes |
| Output Compare channels |
16 |
| picoPower |
No |
| EEPROM (Bytes) |
0 |
| TWI (I2C) |
1 |
| MPU / MMU |
Yes / No |
| NAND Interface |
No |
| Temp. Sensor |
No |
| Input Capture Channels |
6 |
The high-performance, low-power 32-bit AVR RISC-based microcontroller combines 256KB flash, 64KB SRAM, 10/100 ethernet MAC, full-speed (12 Mbps) USB 2.0 with embedded host capability, I2S, and a built-in audio D/A converter.
The MCU achieves 91 Dhrystone MIPS (DMIPS) at 66 MHz while consuming only 40 mA at 3.3V.
The Peripheral Direct Memory Access (PDCA) controller transfers data between peripherals and memories without processor involvement, drastically reducing processing with continuous large data streams within the MCU.
The AT32UC3A1256AU is the Audio version of the AT32UC3A1256. It allows the execution of Atmel licensed Audio firmware IPs.
One version is available:
BuildingAutomation: 舒适性与控制
HomeEntertainment: 音频
MobileElectronics: 便携式音频播放器, 移动电话和移动互联网设备
PCPeripherals: 音频 I/O 设备
