ATxmega128A4U Atmel Corporation, ATxmega128A4U Datasheet - Page 109

• Manufacturer Part Number: ATxmega128A4U
• Manufacturer: Atmel Corporation

Specifications of ATxmega128A4U

• Flash (kbytes): 128 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 7
• Twi (i2c): 2
• Uart: 5
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 2
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 8
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.6 to 3.6
• Operating Voltage (vcc): 1.6 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 5
• Output Compare Channels: 16
• Input Capture Channels: 16
• Pwm Channels: 16
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8.7.3
8331A–AVR–07/11
PRPC/D/E/F – Power Reduction Port C/D/E/F Register
• Bit 1 – ADC: Power Reduction ADC
Setting this bit stops the clock to the ADC. The ADC should be disabled before stopped.
• Bit 0 – AC: Power Reduction Analog Comparator
Setting this bit stops the clock to the analog comparator. The AC should be disabled before
shutdown.
• Bit 7 – Reserved
This bit is reserved and will always be read as zero. For compatibility with future devices, always
write this bit to zero when this register is written.
• Bit 6 – TWI: Two-Wire Interface
Setting this bit stops the clock to the two-wire interface. When this bit is cleared, the peripheral
should be reinitialized to ensure proper operation.
• Bit 5 – USART1
Setting this bit stops the clock to USART1. When this bit is cleared, the peripheral should be
reinitialized to ensure proper operation.
• Bit 4 – USART0
Setting this bit stops the clock to USART0. When this bit is cleared, the peripheral should be
reinitialized to ensure proper operation.
• Bit 3 – SPI: Serial Peripheral Interface
Setting this bit stops the clock to the SPI. When this bit is cleared, the peripheral should be rein-
itialized to ensure proper operation.
• Bit 2 – HIRES: High-Resolution Extension
Setting this bit stops the clock to the high-resolution extension for the timer/counters. When this
bit is cleared, the peripheral should be reinitialized to ensure proper operation.
• Bit 1 – TC1: Timer/Counter 1
Setting this bit stops the clock to timer/counter 1. When thise bit is cleared, the peripheral will
continue like before the shut down.
• Bit 0 – TC0: Timer/Counter 0
Setting this bit stops the clock to timer/counter 0. When this bit is cleared, the peripheral will con-
tinue like before the shut down.
Bit
+0x03/+0x04/
+0x05/+0x06
Read/Write
Initial Value
R
7
–
0
R/W
TWI
6
0
USART1
R/W
5
0
USART0
R/W
4
0
R/W
SPI
Atmel AVR XMEGA AU
3
0
HIRES
R/W
2
0
TC1
R/W
1
0
TC0
R/W
0
0
PRPC/D/E/F
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