Digital I/O support

Digital I/O is available on lines DIO0 through DIO12 (D0 (DIO0/ADC0/Commissioning Configuration) - D9 (DIO9/ON_SLEEP Configuration) and P0 (DIO10/RSSI/PWM0 Configuration) - P4 (DIO14/UART_DIN Configuration)). Digital sampling is enabled on these pins if configured as 3, 4, or 5 with the following meanings:

• 3 is digital input.

  • Use PR (Pull-up/Down Resistor Enable) to enable internal pull up/down resistors for each digital input. Use PD (Pull Up/Down Direction) to determine the direction of the internal pull up/down resistor. All disabled and digital input pins are pulled up by default.

• 4 is digital output low.
• 5 is digital output high.

Function	Micro Pin	SMT Pin	TH Pin	AT Command
DIO0	31	33	20	D0 (DIO0/ADC0/Commissioning Configuration)
DIO1	30	32	19	D1 (DIO1/ADC1/TH_SPI_ATTN Configuration)
DIO2	29	31	18	D2 (DIO2/ADC2/TH_SPI_CLK Configuration)
DIO3	28	30	17	D3 (DIO3/ADC3/TH_SPI_SSEL Configuration)
DIO4	23	24	11	D4 (DIO4/TH_SPI_MOSI Configuration)
DIO5	26	28	15	D5 (DIO5/Associate Configuration)
DIO6	27	29	16	D6 (DIO6/RTS Configuration)
DIO7	24	25	12	D7 (DIO7/CTS Configuration)
DIO8	9	10	9	D8 (DIO8/DTR/SLP_Request Configuration)
DIO9	25	26	13	D9 (DIO9/ON_SLEEP Configuration)
DIO10	7	7	6	P0 (DIO10/RSSI/PWM0 Configuration)
DIO11	8	8	7	P1 (DIO11/PWM1 Configuration)
DIO12	5	5	4	P2 (DIO12/TH_SPI_MISO Configuration)
DIO13	3	3	2	P3 (DIO13/UART_DOUT Configuration)
DIO14	4	4	3	P4 (DIO14/UART_DIN Configuration)

I\O sampling is not available for pins P5 through P9. See the XBee 3 Hardware Reference Manual for full pinouts and functionality.