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IZD1520U Datasheet(PDF) 9 Page - Integral Corp. |
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IZD1520U Datasheet(HTML) 9 Page - Integral Corp. |
9 / 12 page IZD1520U 9 DISPLAY COMMANDS (Based on the 80-port MPU; the RD and WR commands differ for the 68-port MPU) Command RD WR A0 D7 D6 D5 D4 D3 D2 D1 D0 Function 1 Display ON/OFF 1 0 0 1 0 1 0 1 1 1 0/1 Switches the entire display ON or OFF regard- less of the Display RAM’s data or the internal status. *Note 2 Display START Line 1 0 0 1 1 0 Display START address (0 ÷ 31) Determines the line of RAM data to be dis- played at the display’s top line (COM0) 3 Page Address Set 1 0 0 1 0 1 1 1 0 Page Sets the page of the Display RAM in the page address register 4 Column (Seg- ment) Address Set 1 0 0 0 Column address (0 ÷ 79) Sets the column address of the Display RAM in the column address register 5 Status Read 0 1 0 0 0 0 0 Reads the status. BUSY 1: Busy (internal processing) 0: READY status ADC 1: Rightward (forward) output 0: Leftward (reverse) output ON/OFF 1: Display OFF 0: Display ON RESET 1: Resetting 0: Normal 6 Write Display Data 1 0 1 Write Data Writes the data on the data bus to RAM These commands ac- cess a previously speci- fied address 7 Read Display Data 0 1 1 Read Data Reads data from the Display RAM onto the data bus of the Display RAM, after which the column address is incremented one 8 ADC Select 1 0 0 1 0 1 0 0 0 0 0/1 Used to reverse the correspondence between the Display RAM’s column addresses and segment driver output ports 0: Rightward (forward) output 1: Leftward (re- verse) 9 Static Drive ON/OFF 1 0 0 1 0 1 0 0 1 0 0/1 Selects normal display operation or static all-fit drive display operation 1: Static drive (Power Save) 0: Normal display 10 Duty Select 1 0 0 1 0 1 0 1 0 0 0/1 Selects the duty factor for driving LCD cells 1: 1/32 duty 0: 1/16 duty 11 Read Modify Write 1 0 0 1 1 1 0 0 0 0 0 Increments the column address counter by one only when display data is written but not when it is read 12 End 1 0 0 1 1 1 0 1 1 1 0 Cancels the Ready Modify Write mode 13 Reset 1 0 0 1 1 1 0 0 0 1 0 Resets the Display START line to the 1-st line in the register. Resets the column address counter and page address register to 0. Note: Power Save mode is entered by selecting static drive in the Display OFF status. |
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