C161S Datasheet, PDF (12/75 Pages) Infineon Technologies AG – 16-Bit Single-Chip Microcontroller

C161S
General Device Information
Table 2
Pin Definitions and Functions (cont’d)
Symbol Pin
No.
Input Function
Outp.
P6
P6.0 68
P6.1 69
P6.2 70
P6.3 71
IO Port 6 is a 4-bit bidirectional I/O port. It is bit-wise
programmable for input or output via direction bits. For a pin
configured as input, the output driver is put into high-
impedance state. Port 6 outputs can be configured as
push/pull or open drain drivers.
The Port 6 pins also serve for alternate functions:
O CS0 Chip Select 0 Output
O CS1 Chip Select 1 Output
O CS2 Chip Select 2 Output
O CS3 Chip Select 3 Output
P2
P2.9 72
P2.10 73
P2.11 74
P2.12 75
P2.13 76
P2.14 77
P2.15 78
IO Port 2 is a 7-bit bidirectional I/O port. It is bit-wise
programmable for input or output via direction bits. For a pin
configured as input, the output driver is put into high-
impedance state. Port 2 outputs can be configured as
push/pull or open drain drivers.
The following Port 2 pins also serve for alternate functions:
I
EX1IN Fast External Interrupt 1 Input
I
EX2IN Fast External Interrupt 2 Input
I
EX3IN Fast External Interrupt 3 Input
I
EX4IN Fast External Interrupt 4 Input
I
EX5IN Fast External Interrupt 5 Input
I
EX6IN Fast External Interrupt 6 Input
I
EX7IN Fast External Interrupt 7 Input
P5
I
P5.14 79
I
P5.15 80
I
Port 5 is a 2-bit input-only port with Schmitt-Trigger char.
The pins of Port 5 also serve as timer inputs:
T4EUD GPT1 Timer T4 Ext. Up/Down Ctrl. Input
T2EUD GPT1 Timer T5 Ext. Up/Down Ctrl. Input
V_DD
4, 22, –
Digital Supply Voltage:
37, 64
+ 5 V during normal operation and idle mode.
+ 3.3 V during reduced supply operation and idle mode.
≥ 2.5 V during power down mode.
Note: Please refer to the Operating Conditions Parameters.
V_SS
1, 21, –
Digital Ground.
38, 63
Data Sheet
8
V1.0, 2003-11