XC161CJ_02 Datasheet, PDF (16/78 Pages) Infineon Technologies AG – 16-Bi t Single-Chip Microcontroller Preliminary

XC161
Derivatives
Preliminary
General Device Information
Table 2
Pin Definitions and Functions (cont’d)
Symbol Pin Input Function
Num. Outp.
P4
IO
Port 4 is an 8-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. The Port 4 outputs can be configured as
push/pull or open drain drivers. 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⁾
P4.0 80
O
A16
Least Significant Segment Address Line
P4.1 81
O
A17
Segment Address Line
P4.2 82
O
A18
Segment Address Line
P4.3 83
O
A19
Segment Address Line
P4.4 84
O
A20
Segment Address Line,
I
CAN2_RxD CAN Node 2 Receive Data Input,
I
SDL_RxD SDLM Receive Data Input,
I
EX5IN Fast External Interrupt 5 Input (alternate pin B)
P4.5 85
O
A21
Segment Address Line,
I
CAN1_RxD CAN Node 1 Receive Data Input,
I
EX4IN Fast External Interrupt 4 Input (alternate pin B)
P4.6 86
O
A22
Segment Address Line,
O
CAN1_TxD CAN Node 1 Transmit Data Output,
I
SDL_RxD SDLM Receive Data Input,
I
EX5IN Fast External Interrupt 5 Input (alternate pin A)
P4.7 87
O
A23
Most Significant Segment Address Line,
I
CAN1_RxD CAN Node 1 Receive Data Input,
O
CAN2_TxD CAN Node 2 Transmit Data Output,
I
SDL_TxD SDLM Transmit Data Output,
I
EX4IN Fast External Interrupt 4 Input (alternate pin A)
Data Sheet
12
V1.0, 2002-03