UPD6465CS datasheet(22/52 Pages) NEC

22 / 52 page

µPD6464A,6465

2.12

Test Mode Command

This command is for testing the IC. Do not set this command.

D15

D14

D13

D12

D11

D10

10110000

[Reference] Test mode clear command

D15

D14

D13

D12

D11

D10

1011000000000000

2.13

Display Character Control Command (2-byte contiguous command)

This command specifies the character data and blinking data to be written to the video RAM.

When inputting this command, turn ON LC oscillation (if LC oscillation is turned OFF, no character can be

written to the video RAM).

Because this command is a 2-byte contiguous command, if character data are successively written without

the blinking data changed, the second character and those that follow can be abbreviated to the lower 8 bits

(D7 to D0). In this case, the write column address is automatically incremented (if a character is written to column

23 at the rightmost position, the next write address is automatically incremented to column 0 of the next line

(leftmost position)).

Notes 1. Fixed to "0" (

µPD6464A).

2. 7EH (

µPD6464A), FEH (µPD6465).

3. 7FH (

µPD6464A), FFH (µPD6465).

D15

D14

D13

D12

D11

D10

Character specification bits

Function

Outputs data of 00H

Outputs data of 01H

Outputs data DISPLAY OFF

End code of 2-byte contiguous

command

Blink control bit

Function

Does not blink character

Blinks character

Column address

Line address

Line address incremented

Note 2

Note 3

Note 1

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