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AVR32924 Datasheet(PDF) 6 Page - ATMEL Corporation |
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AVR32924 Datasheet(HTML) 6 Page - ATMEL Corporation |
6 / 15 page 6 AVR32924 32156A-AVR-01/11 4.2 I/O expansion headers There are four available I/O expansion headers on the kit. Because of the low pin count on the device, the I/O expansion header pins are shared with onboard functionality. If “clean” expansion ports are needed, cut-straps are available on some of the ADC inputs. Otherwise, it is only needed to remove a series resistor to remove onboard functionality. Table 4-2 show what is shared on the respective header pins. Table 4-2. UC3 I/O expansion header – J1. Pin J1 UC3 pin Shared with onboard functionality 1 TWI SDA PA21 Header J4, board controller 2 TWI SCL PB05 Header J4, board controller 3 UART RX PB11 Header J4 4 UART TX PB10 Header J4 5 SPI CS1 PA08 - 6 SPI MOSI PB03 Header J4, DataFlash® 7 SPI MISO PB02 Header J4, DataFlash 8 SPI SCK PB01 Header J4, DataFlash 9 GND - - 10 VCC_P3V3 - - Table 4-3. UC3 I/O expansion header – J2. Pin J2 UC3 pin Shared with onboard functionality 1 ADC0 (1) PA14 RC filter output 2 ADC1 (2) PA15 QMatrix slider X0 3 ADC2 (1) PA16 Shorted to GND 4 ADC4 (1) PA18 NTC 5 ADC7 PB07 - 6 ADC8 (2) PB08 QMatrix slider X3 7 ADC6 PB06 - 8 ADC5 (2) PB19 QMatrix slider X1 9 GND - - 10 VCC_ANA_P3V3 - - Notes: 1. ADC channels can be disconnected from onboard functions by cutting the available cut-straps on the bottom side of the board. 2. ADC channels are shared with the Atmel QMatrix slider. Remove resistors on the lines to separate the sensors from the ADC. |
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