A registered peripheral model runs in the engine: the firmware talks to it over the real bus and gets device-accurate responses.
I²C quasi-bidirectional I/O expander; port levels host-readable, not a full GPIO fabric.
Simulated device model
Built from the datasheet. Implemented from the part’s register documentation and exercised by automated tests. Nothing physical was ever placed next to it.
I²C · default address 32
[object Object]
| Pin | Type | Role |
|---|---|---|
VCC | power_in | — |
GND | power_in | — |
SDA | open_drain | i2c_sda |
SCL | open_drain | i2c_scl |
INT | output | — |
P0 | passive | — |
P1 | passive | — |
P2 | passive | — |
P3 | passive | — |
P4 | passive | — |
P5 | passive | — |
P6 | passive | — |
P7 | passive | — |
No manufacturer datasheet is indexed for this part yet, so none is linked here.