hd66731a01tb0l Renesas Electronics Corporation., hd66731a01tb0l Datasheet - Page 67

• Manufacturer Part Number: hd66731a01tb0l
• Description: Dot-matrix Liquid Crystal Display Controller/driver Supporting Japanese Kanji, Korean Font Display - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

HD66730/HD66731
Functional Description
Index Register (IR)
The index register (Figure 4) designates control registers (R0 to R7), RAM address register (RAR: R8), and
RAM data register (RDR: R9). The register number must be set between addresses 0000 to 1001 in binary
digits. Note that if address 1111 is set, the test register will be selected. Addresses 1010 to 1110 are
ignored.
66
R/W
0
RS
0
DB7
0
Figure 4 Index Register
0
0
0
ID3 ID2 ID1
DB0
ID0