C868 Datasheet, PDF (9/82 Pages) Infineon Technologies AG – 8-Bit Single-Chip Microcontroller

C868
Table 1
Pin Definitions and Functions
Symbol
P1.0–
P1.4
P1.5-
P1.7
Pin Numbers I/O*) Function
P-
P-
DSO- TSSOP-
28 38
12-8 6,4-1
15-17 11-13
I/O Port 1
is a combination of 5 bits of push-pull bidirectional I/
I O ports and 3 bits of input ports.
As alternate digital functions, port 1 contains the
interrupt 3, timer 2 overflow flag, receive data input
and transmit data output of serial interface. The
alternate functions are assigned to the pins of port
1 as follows:
12 6
11 4
10 3
9
2
8
1
P1.0/TxD Transmit data of serial interface
P1.1/EXF2 Timer 2 overflow flag
P1.2
P1.3/INT3 Interrupt 3
P1.4/RxD Receive data of serial interface, Use as
wakeup source from powerdown if bit WS of
PMCON0 is set.
15 11
16 12
17 13
*)I=Input
O=Output
The input ports are also interrupt ports, input to the
timer2, CCU6 modules and ADC:
I P1.5/Input to Counter 2/External Interrupt 0 Input/
Analog Input Channel 0
External interrupt input or Hall input signal, counter
2 input or input channel 0 to the ADC unit. Use as
wakeup source from powerdown if bit WS of
PMCON0 is cleared.
I P1.6/Timer 2 Trigger/External Interrupt 1 Input/
Analog Input Channel 1
External interrupt input or Hall input signal, input
channel 1 to the ADC unit, trigger to Timer 2.
I P1.7/External Interrupt 2 Input/
Analog Input Channel 2
External interrupt input or Hall input signal and input
channel 2 to the ADC unit.
Data Sheet
9
V 1.0, 2003-05