ATxmega128B1 Atmel Corporation, ATxmega128B1 Datasheet - Page 145

• 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

12.14.4
8291A–AVR–10/11
CLKEVOUT – Clock and Event Out Register
• Bit 3:0 – VP2MAP: Virtual Port 2 Mapping
These bits decide which ports should be mapped to Virtual Port 2. The registers DIR, OUT, IN,
and INTFLAGS will be mapped. Accessing the virtual port registers is equal to accessing the
actual port registers. See
Table 12-6.
• Bit 7 – CLKEVPIN: Clock and Event Output Pin Select
Setting this pin enables output of clock and event pins on port pin 4 instead of port pin 7.
• Bit 6 – RTCOUT: RTC Clock Output Enable
Setting this bit enables output of the RTC clock source on PORTC pin 6.
• Bit 5:4 – EVOUT[1:0]: Event Output Port
These bits decide which port event channel 0 from the event system will be output to. Pin 7 on
the selected port is the default used, and the CLKOUT bits must be set differently from those of
EVOUT. The port pin must be configured as output for the event to be available on the pin.
Bit
+0x04
Read/Write
Initial Value
VPnMAP[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
CLKEVPIN
R/W
7
0
Virtual port mapping.
RTCOUT
Group Configuration
PORTA
PORTB
PORTC
PORTD
PORTE
—
PORTG
—
—
—
—
PORTM
—
—
—
PORTR
R/W
6
0
Table 12-6
R/W
5
0
EVOUT[1:0]
for configuration.
R/W
4
0
R/W
CLKOUTSEL[1:0]
3
0
Description
PORTA mapped to Virtual Port n
PORTB mapped to Virtual Port n
PORTC mapped to Virtual Port n
PORTD mapped to Virtual Port n
PORTE mapped to Virtual Port n
Reserved for future use
PORTG mapped to Virtual Port n
Reserved for future use
Reserved for future use
Reserved for future use
Reserved for future use
PORTM mapped to Virtual Port n
Reserved for future use
Reserved for future use
Reserved for future use
PORTR mapped to Virtual Port n
Atmel AVR XMEGA B
R/W
2
0
R/W
1
0
CLKOUT[1:0]
R/W
0
0
CLKEVOUT
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