HD66750 Datasheet, PDF (21/96 Pages) Hitachi Semiconductor – 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions

HD66750/1
Instruction Descriptions
Index
The index instruction specifies the RAM control indexes (R00 to R12). It sets the register number in the
range of 00000 to 10010 in biniary form.
R/W RS DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 * * * * * * * * * * * ID4 ID3 ID2 ID1 ID0
Figure 1 Index Instruction
Status Read
The status read instruction reads the internal status of the HD66750/1.
L6Ð0: Indicate the driving raster-row position where the liquid crystal display is being driven.
C5Ð0: Read the contrast setting values (CT5Ð0).
R/W RS DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
1 0 0 L6 L5 L4 L3 L2 L1 L0 0 0 C5 C4 C3 C2 C1 C0
Figure 2 Status Read Instruction
Start Oscillation
The start oscillation instruction restarts the oscillator from the halt state in the standby mode. After issuing
this instruction, wait at least 10 ms for oscillation to stabilize before issuing the next instruction. (See the
Standby Mode section.)
If this register is read forcibly when R/W = 1, 0750H is read.
R/W RS DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
01 * * ** * ** * ** * ** * *1
1 1 0 00 0 0 11 1 01 0 10 0 00
Figure 3 Start Oscillation Instruction
21