HD66760 Datasheet, PDF (19/105 Pages) Hitachi Semiconductor – 104 X 80-dot Graphics LCD Controller/Driver for 256 Colors

HD66760
Instruction Descriptions
Index
The index instruction specifies the RAM control indexes (R00h to R39h). It sets the register number in the
range of 000000 to 111001 in binary form. However, R40h to R44h are disabled since they are test registers.
R/W RS DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W 0 * * * * * * * * * ID6 ID5 ID4 ID3 ID2 ID1 ID0
Figure 1 Index Instruction
Status Read
The status read instruction reads the internal status of the HD66760.
L7–0: Indicate the driving raster-row position where the liquid crystal display is being driven.
C6–0: Read the contrast setting values (CT6-0).
R/W RS DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
R 0 0 L6 L5 L4 L3 L2 L1 L0 0 C6 C5 C4 C3 C2 C1 C0
Figure 2 Status Read Instruction
Start Oscillation (R00h)
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, 8760H is read.
R/W RS DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W1 * * * * * * * * * * * * * * * 1
R1 1000011101100000
Figure 3 Start Oscillation Instruction