ATxmega128B1 Atmel Corporation, ATxmega128B1 Datasheet - Page 146

• Manufacturer Part Number: ATxmega128B1
• Manufacturer: Atmel Corporation

Specifications of ATxmega128B1

• Flash (kbytes): 128 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 53
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Segment Lcd: 160
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 4
• Resistive Touch Screen: No
• 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: 3
• Output Compare Channels: 10
• Input Capture Channels: 10
• Pwm Channels: 10
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

12.14.5
8291A–AVR–10/11
EVCTRL – Event Control Register
Table 12-7 on page 146
Table 12-7.
• Bits 3:2 – CLKOUTSEL[1:0] : Clock Output Select
These bits are used to select which of the peripheral clocks will be output to the port pin if CLK-
OUT is configured.
Table 12-8.
• Bit 1:0 – CLKOUT[1:0]: Clock Output Port
These bits decide which port the peripheral clock will be output to. Pin 7 on the selected port is
the default used. The CLKOUT setting will override the EVOUT setting. Thus, if both are
enabled on the same port pin, the peripheral clock will be visible. The port pin must be config-
ured as output for the clock to be available on the pin.
Table 12-9 on page 146
Table 12-9.
• Bit 7:2 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always
write these bits to zero when this register is written.
Bit
+0x06
Read/Write
Initial Value
CLKOUT[1:0]
00
01
10
11
CLKOUTSEL[1:0]
EVOUT[1:0]
00
01
10
11
00
01
10
11
R
7
–
0
Event output pin selection.
Event output clock selection.
Clock output port configurations.
R
6
–
0
shows the possible configurations.
shows the possible configurations.
Group Configuration
OFF
PC
—
PE
Group Configuration
Group Configuration
CLK1X
CLK2X
CLK4X
R
5
–
0
OFF
PC
PE
—
—
R
4
–
0
Description
Event output disabled
Event channel 0 output on PORTC
Reserved for future use
Event channel 0 output on PORTE
Description
CLK
CLK
CLK
Reserved
Description
Clock output disabled
Clock output on PORTC
Reserved for future use
Clock output on PORTE
R
3
–
0
PER
PER2
PER4
Atmel AVR XMEGA B
output to pin
output to pin
output to pin
R
2
–
0
R/W
EVOUTSEL[1:0]
1
0
R/W
0
0
EVCTRL
146