16.5.11 Pin n Control
Name: | PINnCTRL |
Offset: | 0x10 + n*0x01 [n=0..7] |
Reset: | 0x00 |
Property: | - |
Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
INVEN | PULLUPEN | ISC[2:0] | |||||||
Access | R/W | R/W | R/W | R/W | R/W | ||||
Reset | 0 | 0 | 0 | 0 | 0 |
Bit 7 – INVEN Inverted I/O Enable
Value | Description |
---|---|
0 | Input and output values are not inverted |
1 | Input and output values are inverted |
Bit 3 – PULLUPEN Pull-up Enable
Value | Description |
---|---|
0 | Pull-up disabled |
1 | Pull-up enabled |
Bits 2:0 – ISC[2:0] Input/Sense Configuration
This bit field controls the input and sense configuration of pin n. The sense configuration determines how a port interrupt can be triggered.
Note:
- If the digital input buffer for pin n is disabled, bit n in the Input Value (PORTx.IN) register will not be updated.
Value | Name | Description |
---|---|---|
0x0 | INTDISABLE | Interrupt disabled but input buffer enabled |
0x1 | BOTHEDGES | Interrupt enabled with sense on both edges |
0x2 | RISING | Interrupt enabled with sense on rising edge |
0x3 | FALLING | Interrupt enabled with sense on falling edge |
0x4 | INPUT_DISABLE | Interrupt and digital input buffer disabled(1) |
0x5 | LEVEL | Interrupt enabled with sense on low level |
other | — | Reserved |