TMP92C820FG Datasheet, PDF(56/382 Page) Toshiba Semiconductor – Original CMOS 16-Bit Microcontroller

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TMP92C820FG Datasheet, PDF (56/382 Pages) Toshiba Semiconductor – Original CMOS 16-Bit Microcontroller

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TMP92C820

3.5 Function of Ports

TMP92C820 has I/O port pins that are shown in Table 3.5.1. In addition to functioning as

0H

general-purpose I/O ports, these pins are also used by internal CPU and I/O functions. Table

1H

3.5.2 lists I/O registers and their specifications.

Table 3.5.1 Port Functions (1/2)

(R: PU = with programmable pull-up resistor, U = with pull-up resistor)

Port Name

Pin Name

Number of

Pins

I/O

R I/O Setting

Pin Name for Built-in

Function

Port 1

P10 to P17

8

I/O

â

Bit

D8 to D15

Port 2

P20 to P27

8

I/O

â

Bit

D16 to D23

Port 3

P30 to P37

8

I/O

â

Bit

D24 to D31

Port 4

P40 to P47

8

I/O*

â

Bit*

A0 to A7

Port 5

P50 to P57

8

I/O*

â

Bit*

A8 to A15

Port 6

P60 to P67

8

I/O*

â

Bit*

A16 to A23

Port 7

P70

1

Output

â

(Fixed)

RD

P71

1

Output

â

(Fixed)

WRLL

P72

1

Output

â

(Fixed)

WRLU

P73

1

Output

â

(Fixed)

WRUL

P74

1

Output

â

(Fixed)

WRUU

P75

1

Output

â

(Fixed)

R/ W

P76

1

I/O

â

Bit

WAIT

Port 8

P80

1

Output

â

(Fixed)

CS0 , SDCSH

P81

1

Output

â

(Fixed)

CS1 , SDCSL

P82

1

Output

â

(Fixed)

CS2 , CS2A

P83

1

Output

â

(Fixed)

CS3

P84

1

Output

â

(Fixed)

EA24, CS2B

P85

1

Output

â

(Fixed)

EA25, CS2C

P86

1

Output

â

(Fixed)

CS2D

P87

1

Output

â

(Fixed)

SDCLK

Port 9

P90

1

I/O

â

Bit

SCK

P91

1

I/O

â

Bit

SO, SDA

P92

1

I/O

â

Bit

SI, SCL

P93

1

I/O

â

Bit

CS2E

P94

1

I/O

â

Bit

CS2F

P95

1

I/O

â

Bit

CS2G , TXD2

P96

1

I/O

â

Bit

CSEXA , RXD2

Port A PA0 to PA7

8

Input

U

(Fixed)

KI0 to KI7

Port C PC0

1

I/O

â

Bit

TA0IN

PC1

1

I/O

â

Bit

INT1, TA1OUT

PC3

1

I/O

â

Bit

INT0

PC5

1

I/O

â

Bit

INT2, TA3OUT

PC6

1

I/O

â

Bit

INT3, TB0OUT0

Port F

PF0

1

I/O

â

Bit

TXD0

PF1

1

I/O

â

Bit

RXD0

PF2

1

I/O

â

Bit

SCLK0, CTS0

PF3

1

I/O

â

Bit

TXD1

PF4

1

I/O

â

Bit

RXD1

PF5

1

I/O

â

Bit

SCLK1, CTS1

*: When these ports are used as general-purpose I/O port, each bit can be set individually for input or output.

However, each bit cannot be set individually for input or output even if 1bit or more bits are used as

address bus in same port.

All of general-purpose I/O ports except for port that used as address bus are operated as output port.

Please be careful when using this setting.

92C820-54

2007-02-16

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