ST7920-0C View Datasheet(PDF) - Sitronix Technology Co., Ltd.
Part Name
Description
MFG CO.
'ST7920-0C' PDF : 49 Pages View PDF
ST7920
l Write Data to RAM
RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Code 1 0 D7 D6 D5 D4 D3 D2 D1 D0
Write data to the internal RAM and increase/decrease the (AC) by 1
Each RAM address (CGRAM, DDRAM and GDRAM…) must write 2 consecutive bytes for 16-bit data. After
receiving the second byte, the address counter will increase or decrease by 1 according to the entry mode set
control bit.
l Read RAM Data
RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Code 1 1 D7 D6 D5 D4 D3 D2 D1 D0
Read data from the internal RAM and increase/decrease the (AC) by 1
After the operation mode changed to Read (CGRAM, DDRAM and GDRAM…), a “Dummy Read” is required.
There is no need to add a “Dummy Read” for the following bytes unless a new address set instruction is issued.
V4.0
22/49
2008/08/18
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