PT6955_10 Datasheet, PDF (12/19 Pages) Princeton Technology Corp – LED Driver IC

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LED Driver IC
PT6955
RECOMMENDED SOFTWARE FOLWCHART
START
Delay 200 ms
SET
COMMAND2
(WriteData)
SET
COMMAND3
Clear Display RAM
(See Note 5)
SET
COMMAND1
INITIAL
SETTING
SET
COMMAND4
(88H ~ 8FH : Display ON)
MAIN
PROGRAM
SET
COMMAND2
(READ KEY & WRITE
DATA INCLUDED)
SET
COMMAND3
SET
COMMAND1
MAIN
LOOP
SET
COMMAND4
END
Notes:
1. Command 1: Display Mode Commands
2. Command 2: Data Setting Commands
3. Command 3: Address Setting Commands
4. Command 4: Display Control Commands
5. When IC power is applied for the first time, the contents of the Display RAM are not defined; thus, it
is strongly suggested that the contents of the Display RAM must be cleared during the initial setting.
PT6955 V1.5
- 12 -
June, 2005