C868 Datasheet, PDF (10/82 Pages) Infineon Technologies AG – 8-Bit Single-Chip Microcontroller

C868
Table 1
Pin Definitions and Functions
Symbol
P3.0–
P3.7
Pin Numbers I/O*) Function
P-
P-
DSO- TSSOP-
28 38
2,3,23, 32,33,25, I/O
24,1, 26,31,24,
22,5,6 36,37
Port 3
is an 8-bit push-pull bidirectional I/O port. This port
also serves as alternate functions for the CCU6
functions. The functions are assigned to the pins of
port 3 as follows :
2
32
3
33
23 25
24 26
1
31
22 24
5
36
6
37
V_AREF 19
15
V_AGND 18
14
AN4
21 17
AN3
20 16
RESET 7
38
ALE/BSL 4
34
V_SSP
14
10
V_DDP
13
9
*)I=Input
O=Output
P3.0/COUT63 16 bit compare channel output
P3.1/CTRAP CCU trap input
P3.2/COUT62 Output of capture/compare ch 2
P3.3/CC62 Input/output of capture/compare ch 2
P3.4/COUT61 Output of capture/compare ch 1
P3.5/CC61 Input/output of capture/compare ch 1
P3.6/COUT60 Output of capture/compare ch 0
P3.7/CC60 Input/output of capture/compare ch 0
– Reference voltage for the A/D converter.
– Reference ground for the A/D converter.
I Analog Input Channel 4
is input channel 4 to the ADC unit.
I Analog Input Channel 3
is input channel 3 to the ADC unit.
I RESET
A low level on this pin for two machine cycle while
the oscillator is running resets the device.
I/O Address Latch Enable/Bootstrap Mode
A low level on this pin during reset allows the device
to go into the bootstrap mode. After reset, this pin
will output the address latch enable signal. The
ALE can be disabled by bit EALE in SFR
SYSCON0.
– IO Ground (0V)
– IO Power Supply (+3.3V)
Data Sheet
10
V 1.0, 2003-05