XC164CS datasheet(13/71 Pages) INFINEON

13 / 71 page

XC164

Derivatives

General Device Information

Data Sheet

V2.1, 2003-06

P4.0

P4.1

P4.2

P4.3

P4.4

P4.5

P4.6

P4.7

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,

CAN2_RxD CAN Node 2 Receive Data Input,

EX5IN

Fast External Interrupt 5 Input (alternate pin B)

A21

Segment Address Line,

CAN1_RxD CAN Node 1 Receive Data Input,

EX4IN

Fast External Interrupt 4 Input (alternate pin B)

A22

Segment Address Line,

CAN1_TxD CAN Node 1 Transmit Data Output,

EX5IN

Fast External Interrupt 5 Input (alternate pin A)

A23

Most Significant Segment Address Line,

CAN1_RxD CAN Node 1 Receive Data Input,

CAN2_TxD CAN Node 2 Transmit Data Output,

EX4IN

Fast External Interrupt 4 Input (alternate pin A)

Table 2

Pin Definitions and Functions (cont’d)

Symbol Pin

Num.

Input

Outp.

Function

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