ATxmega16A4 Atmel Corporation, ATxmega16A4 Datasheet - Page 167

• Manufacturer Part Number: ATxmega16A4
• Manufacturer: Atmel Corporation

Specifications of ATxmega16A4

• 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 Speed: No
• Usb Interface: No
• 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

14.12.4
8077H–AVR–12/09
CTRLD - Control Register D
• Bit 7:5 – EVACT[2:0]: Event Action
These bits define the Event Action the timer will perform on an event according to
page
The EVSEL setting will decide which event source or sources that have the control in this case.
Table 14-5.
Selecting the any of the capture event action changes the behavior of the CCx registers and
related status and control bits to be used as for capture. The error status flag (ERRIF) will in this
configuration indicate a buffer overflow.
• Bit 4 – EVDLY: Timer Delay Event
When this bit is set, the selected event source is delayed by one peripheral clock cycle. This fea-
ture is intended for 32-bit input capture operation. Adding the event delay is necessary for
compensating for the carry propagation delay that is inserted when cascading two counters via
the Event System.
• Bit 3:0 – EVSEL[3:0]:Timer Event Source Select
These bits select the event channel source for the Timer/Counter. For the selected event chan-
nel to have any effect the Event Action bits (EVACT) must be set according to
the Event Action is set to capture operation, the selected event channel n will be the event chan-
nel source for CC channel A, and event channel (n+1)%8, (n+2)%8 and (n+3)%8 will be the
event channel source for CC channel B, C and D.
Bit
+0x03
Read/Write
Initial Value
167.
EVACT[2:0]
000
001
010
011
100
101
110
111
Timer Event Action Selection
R/W
7
0
EVACT[2:0]
R/W
6
0
Group Configuration
UPDOWN
RESTART
R/W
QDEC
CAPT
5
0
FRQ
OFF
PW
EVDLY
R/W
4
0
Event Action
None
Input Capture
Externally Controlled Up/ Down Count
Quadrature decode
Restart waveform period
Frequency Capture
Pulse Width Capture
Reserved
R/W
3
0
R/W
2
0
EVSEL[3:0]
R/W
1
0
XMEGA A
Table
R/W
0
0
Table 14-5 on
14-6. When
CTRLD
167