Datasheet

XC164-32
Derivatives
General Device Information
Data Sheet 12 V1.1, 2006-08
P4
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P4.6
P4.7
53
54
55
56
57
58
59
60
IO
O
O
O
O
O
O
O
O
O
I
I
O
I
I
O
O
I
O
I
O
I
Port 4 is an 8-bit bidirectional I/O port. Each pin can be
programmed for input (output driver in high-impedance
state) or output (configurable as push/pull or open drain
driver). The input threshold of Port 4 is selectable (standard
or special).
Port 4 can be used to output the segment address lines, the
optional chip select lines, and for serial interface lines:
1)
A16 Least Significant Segment Address Line,
CS3
Chip Select 3 Output
A17 Segment Address Line,
CS2
Chip Select 2 Output
A18 Segment Address Line,
CS1
Chip Select 1 Output
A19 Segment Address Line,
CS0
Chip Select 0 Output
A20 Segment Address Line,
CAN1_RxD CAN Node B Receive Data Input,
EX5IN Fast External Interrupt 5 Input (alternate pin B)
A21 Segment Address Line,
CAN0_RxD CAN Node A Receive Data Input,
EX4IN Fast External Interrupt 4 Input (alternate pin B)
A22 Segment Address Line,
CAN0_TxD CAN Node A Transmit Data Output,
EX5IN Fast External Interrupt 5 Input (alternate pin A)
A23 Most Significant Segment Address Line,
CAN0_RxD CAN Node A Receive Data Input,
CAN1_TxD CAN Node B Transmit Data Output,
EX4IN Fast External Interrupt 4 Input (alternate pin A)
Table 2 Pin Definitions and Functions (cont’d)
Sym-
bol
Pin
Num.
Input
Outp.
Function