Datasheet

C161S
General Device Information
Data Sheet 8 V1.0, 2003-11
P6
P6.0
P6.1
P6.2
P6.3
68
69
70
71
IO
O
O
O
O
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:
CS0
Chip Select 0 Output
CS1
Chip Select 1 Output
CS2
Chip Select 2 Output
CS3
Chip Select 3 Output
P2
P2.9
P2.10
P2.11
P2.12
P2.13
P2.14
P2.15
72
73
74
75
76
77
78
IO
I
I
I
I
I
I
I
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:
EX1IN Fast External Interrupt 1 Input
EX2IN Fast External Interrupt 2 Input
EX3IN Fast External Interrupt 3 Input
EX4IN Fast External Interrupt 4 Input
EX5IN Fast External Interrupt 5 Input
EX6IN Fast External Interrupt 6 Input
EX7IN Fast External Interrupt 7 Input
P5
P5.14
P5.15
79
80
I
I
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,
37, 64
– Digital Supply Voltage:
+ 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,
38, 63
– Digital Ground.
Table 2 Pin Definitions and Functions (cont’d)
Symbol Pin
No.
Input
Outp.
Function