ATxmega16A4U Atmel Corporation, ATxmega16A4U Datasheet - Page 199

• Manufacturer Part Number: ATxmega16A4U
• Manufacturer: Atmel Corporation

Specifications of ATxmega16A4U

• Flash (kbytes): 16 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• 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): 3.3
• Eeprom (bytes): 1024
• 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

15.10.10 CNTH – Count Register High
15.10.11 PERL – Period Register Low
15.10.12 PERH – Period Register High
15.10.13 CMPLx – Low Byte Compare Register x
8331A–AVR–07/11
• Bit 7:0 – CNTH[7:0]
CNTH contains the 8-bit counter value for the High Byte Timer/Counter. The CPU and DMA
write access has priority over count, clear, or reload of the counter.
• Bit 7:0 – PERL[7:0]
PERL contains the 8-bit Period value for the Low Byte Timer/Counter.
• Bit 7:0 – PERH[7:0]
PERH contains the 8-bit Period for the High Byte Timer/Counter.
• Bit 7:0 – CMPLx[7:0], x=[A, B, C, D]
CMPLx contains the 8-bit Compare value for the Low Byte Timer/Counter.
These registers are all continuously compared to the counter value. Normally the outputs form
the comparators are then used for generating waveforms.
.
Bit
Read/Write
Initial Value
Bit
+0x21
Read/Write
Initial Value
Bit
+0x27
Read/Write
Initial Value
Bit
+0x26
Read/Write
Initial Value
R/W
R/W
R/W
R/W
7
0
7
0
7
0
7
0
R/W
R/W
R/W
R/W
6
0
6
0
6
0
6
0
R/W
R/W
R/W
R/W
5
0
5
0
5
0
5
0
R/W
R/W
R/W
R/W
4
0
4
0
4
0
4
0
PERL[7:0]
CNTH[7:0]
CMPLx[7:0]
PERH[7:0]
Atmel AVR XMEGA AU
R/W
R/W
R/W
R/W
3
0
3
0
3
0
3
0
R/W
R/W
R/W
R/W
2
0
2
0
2
0
2
0
R/W
R/W
R/W
R/W
1
0
1
0
1
0
1
0
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
CMPLx
CNTH
PERL
PERH
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