Beck IPC@CHIP - SC12 - Programmable I;O Pins

IPC@CHIP - SC12
Hardware Manual v1.1 [05.11.2002]
©BECK IPC GmbH page 8 of 28
4.2 Programmable I/O Pins
Pin Name
Type Function
PIO[0..13] I/O
Programmable I/O Pins (input/output, open-drain)
The IPC@CHIP family microcontroller provides 14 individually
programmable I/O pins. Each PIO can be programmed with the
following attributes: PIO function (enabled/disabled), direction
(input/output), and weak pullup or pulldown.
PIO# After power-on reset, the PIO pin
defaults to
Programmable as
Input with
0 Input without pullup
1 Input without pullup
2 Input with pullup pullup
3 Input with pullup pullup / pulldown
4 Input with pullup pullup
5 Input with pullup pullup
6 Input with pullup pullup
7 RxD0 pullup
8 TxD0 pullup
9 Input with pullup pullup
10 Input with pullup pullup
11 TxD1 pullup
12 RxD1 pullup
13 Input with pulldown Pulldown
Internal Pullup and Pulldown is approximately 10kOhm.