ATxmega16D4 Atmel Corporation, ATxmega16D4 Datasheet - Page 124

• Manufacturer Part Number: ATxmega16D4
• Manufacturer: Atmel Corporation

Specifications of ATxmega16D4

• 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: 4
• Twi (i2c): 2
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 12
• Adc Speed (ksps): 200
• Analog Comparators: 2
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 2
• 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: 4
• Output Compare Channels: 14
• Input Capture Channels: 14
• Pwm Channels: 14
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8210B–AVR–04/10
Figure 12-2. Timer/Counter Block Diagram
The Counter Register (CNT), the Period Registers w/buffer (PER and PERBUF), and the com-
pare and Capture registers w/buffers (CCx and CCxBUF) are 16-bit registers.
During normal operation the counter value is continuously compared to zero and the period
(PER) value to determine whether the counter has reached TOP or BOTTOM.
The counter value is also compared to the CCx registers. These comparators can be used to
generate interrupt requests. They also generate events for the Event System. The waveform
generator modes use the comparators to set the waveform period or pulse width.
A prescaled peripheral clock and events from the Event System can be used for controlling the
counter. The Event System is also used as source to the input capture. Combined with the
Quadrature Decoding functionality in the Event System QDEC, the Timer/Counter can be used
for high speed Quadrature Decoding.
Bus Bridge
Base Counter
Compare/Capture
(x = {A,B,C,D})
Counter
V
V
TEMP
PERBUF
CCxBUF
PER
CNT
CCx
A
=
I/O Data Bus (8-bit)
B
= 0
C
CTRL
D
=
Event Select
Clock Select
E
CKSEL
EVSEL
"count"
"clear"
"load"
"direction"
"capture"
"match"
TOP
BOTTOM
G
Control Logic
Control Logic
INTCTRL
Generation
A
Waveform
B
INTFLAGS
XMEGA D
OVF/UNF
(INT Req.)
ERRIF
(INT Req.)
OCx Out
CCxIF
(INT Req.)
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