C164CI 데이터 시트보기 (PDF) - Infineon Technologies

부품명

상세내역

제조사

C164CI

16-Bit Single-Chip Microcontroller

Infineon Technologies 

C164CI/SI

C164CL/SL

Table 2

Pin Definitions and Functions (cont’d)

Symbol Pin

No.

Input Function

Outp.

P4

IO

Port 4 is a 6-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 4 outputs can be configured as push/

pull or open drain drivers. The input threshold of Port 4 is

selectable (TTL 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 17

O

A16

Least Significant Segment Address Line,

O

CS3

Chip Select 3 Output

P4.1 18

O

A17

Segment Address Line,

O

CS2

Chip Select 2 Output

P4.2 19

O

A18

Segment Address Line,

O

CS1

Chip Select 1 Output

P4.3 22

O

A19

Segment Address Line,

O

CS0

Chip Select 0 Output

P4.5 23

O

A20

Segment Address Line,

I

CAN1_RxD CAN 1 Receive Data Input

P4.6 24

O

A21

Most Significant Segment Address Line,

O

CAN1_TxD CAN 1 Transmit Data Output

RD

25

O

External Memory Read Strobe. RD is activated for every

external instruction or data read access.

WR/ 26

O

WRL

External Memory Write Strobe. In WR-mode this pin is

activated for every external data write access. In WRL-mode

this pin is activated for low byte data write accesses on a

16-bit bus, and for every data write access on an 8-bit bus.

See WRCFG in register SYSCON for mode selection.

ALE 27

O

Address Latch Enable Output. Can be used for latching the

address into external memory or an address latch in the

multiplexed bus modes.

Data Sheet

6

V2.0, 2001-05

Share Link: