NIPPON PRECISION CIRCUITS-13

SM5902AF

Bit

Name

Function

H operation

Reset level

D7

MSWREN

Encode sequence start/stop

Start

L

D6

MSWACL

Write address reset

Reset

L

D5

MSRDEN

Decode sequence start/stop

Start

L

D4

MSRACL

Read address reset

Reset

L

D3

MSDCN2

MSDCN2=H, MSDCN1=H: 3-pair comparison start

L

MSDCN2=H, MSDCN1=L: 2-pair comparison start

D2

MSDCN1

MSDCN2=L, MSDCN1=H: Direct-connect start

L

MSDCN2=L, MSDCN1=L: Connect operation stop

D1

WAQV

Q data valid

Valid

L

D0

MSON

Memory system ON

ON

L

1000 0000

80hex =

Shock-proof memory system settings

Bit

Name

Function

H operation Reset level

D7

D6

D5

D4

UC5OE

Extension I/O port UC5 input/output setting

Output

L

D3

UC4OE

Extension I/O port UC4 input/output setting

Output

L

D2

UC3OE

Extension I/O port UC3 input/output setting

Output

L

D1

UC2OE

Extension I/O port UC2 input/output setting

Output

L

D0

UC1OE

Extension I/O port UC1 input/output setting

Output

L

1000 0001

81hex =

Extension I/O port input/output settings

Bit

Name

Function

H operation Reset level

D7

D6

D5

D4

UC5WD

Extension I/O port UC5 output data setting

H output

L

D3

UC4WD

Extension I/O port UC4 output data setting

H output

L

D2

UC3WD

Extension I/O port UC3 output data setting

H output

L

D1

UC2WD

Extension I/O port UC2 output data setting

H output

L

D0

UC1WD

Extension I/O port UC1 output data setting

H output

L

1000 0010

82hex =

Extension port HIGH/LOW output level

A port setting is invalid if that port has already been defined as an input using the 81H command above.

Command table

Write command summary

MS command 80

Extension I/O settings 81

Extension I/O output data settings 82