HD66765 Datasheet, PDF (62/71 Pages) Hitachi Semiconductor – 396-channel Segment Driver with Internal RAM for 4096-color Displays

HD66765
c) Serial Transfer Sequence
Instruction setting change
Change the instruction bit setting
corresponding to the HD66765
Transfer to the common driver must be executed immediately after setting up the instruction
Index set R0Ah
Instruction read
tion ^{TE = "0"}
NO
(During transfer)
a _{YES (Transfer can be executed)}
ific ^{Common side index (IDX2 to 0) Specify the IDX2 to 0 in the common side}
TE = 1 (transfer start)
instruction including a changed instruction bit
ec _{Figure 46 Common Driver Serial Transfer (cont)}
Sp Notes: 1. Transfer to the common driver must take place immediately after setting up the instruction.
y ^{2. The serial transfer period takes a maximum of 1/fosc × 18 clock cycles (sec).}
r _{3. Serial transfer cannot be executed in standby mode. If the chip enters standby mode during}
a _{transfer, the serial transfer is forcibly suspended. Transfer must be executed again after}
in ^{standby has been canceled because correct transfer is not guaranteed in this situation.}
4. Serial transfer can be forcibly suspended by writing TE=0. Transfer must be executed again
lim ^{because correct transfer is not guaranteed in this situation.}
5. The instruction bit for the common driver is not executed when it is not transferred to the
re common driver. When the setting is changed, transfer must be executed again.
P _{When transfer to the common driver is executed, the transfer is executed by using one of the following}
common driver (HD66764) instructions, corresponding to the value set by the IDX2 to 0.
Table 26 Common Driver (HD66764) Instructions
IDX2 IDX1 IDX0
000
DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
BS2 BS1 BS0 BT3 BT2 BT1 BT0 0 DC1 DC0 AP1 AP0 SLP
001
0 0 0 0 0 0 0 0 0 0 VC2 VC1 VC0
010
0 VR3 VR2 VR1 VR0 0 CT6 CT5 CT4 CT3 CT2 CT1 CT0
011
0 0 D1 CMS SPT SS17 SS16 SS15 SS14 SS13 SS12 SS11 SS10
100
0 0 0 0 0 SE17 SE16 SE15 SE14 SE13 SE12 SE11 SE10
101
0 0 0 0 0 SS27 SS26 SS125 SS24 SS23 SS22 SS21 SS20
110
0 0 0 0 0 SE27 SE26 SE25 SE24 SE23 SE22 SE21 SE20
62