Hey all, as per the title really, I have an IC on a board and no idea what it does. The only marking on the top is "
5C". I've uploaded a couple of pics below. On the first image the IC is circled in red with pin 1 marked by the red dot next to it. The 2nd image shows the IC removed.
The IC interfaces with the sim card slot that would normally be below it, on the left of the board.
Pinouts appear to be as follows....
Pin 1 - CLK pin on Sim Card Slot
Pin 2 - GND
Pin 3 - Not Connected
Pin 4 - VCC pin on the Sim Card Slot and the decoupling capacitor located to the right of the IC
Pin 5 - RST pin on the Sim Card Slot
Pin 6 - I/O pin on the Sim Card Slot
So it clearly interfaces with the sim card and does something, the question is what?!
Anyone got any ideas?
Thanks

