HD66766R Datasheet, PDF (18/97 Pages) Hitachi Semiconductor – 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors

HD66766R
Rev. 1.0-1 / September 2002
Instruction Descriptions
Index: IR
The index instruction specifies the RAM control indexes (R00h to R3Fh). It sets the register number in
the range of 000000 to 111001 in binary form. However, R40 to R44 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 4 Index Instruction
Status Read: SR
The status read instruction reads the internal status of the HD66766R.
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 L7 L6 L5 L4 L3 L2 L1 L0 0 C6 C5 C4 C3 C2 C1 C0
Figure 5 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, “0766”H is read.
R/W RS DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
w 1 * * **
** * * ** ** * **1
R 1 0 0 0 0 01 1 10 1 1 0 0 1 1 0
Figure 6 Start Oscillation Instruction
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