Description
Pin assignments and description
|
|
Pin Number |
Pin Name |
Description |
|
3 |
Vss |
Ground |
|
|
4 |
VDD |
Power input |
|
|
1,2,5,7,8&9 |
PIN1,2,5,7,8&9 |
I/O, please refer to Pin mux table |
|
|
6 |
ID |
Connects to the Atmel ATSHA ID chip |
Pin mux
In addition to acting as a GPIO, each pin on the imp001 can be configured to one of several specialized functions. While pins may only have one function at a time, they may be reconfigured during run-time to change function as needed. For example, a pin may first be configured as a DAC and then reconfigured as an ADC. Additionally, not all the pins in a hardware function need to be assigned to that function. For example, pins 8 and 9 could be used as UART and pins 1 and 2 could be used as I2C.
All I/O pins are initially tri-stated.
The imp001 can be woken from low power sleep mode with a rising edge on PIN1. If this signal is pulsed, the minimum pulse width is 20ms.
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