hd66712u Renesas Electronics Corporation., hd66712u Datasheet - Page 51
hd66712u
Manufacturer Part Number
hd66712u
Description
Dot-matrix Liquid Crystal Display Controller/driver - Hitachi Semiconductor
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD66712U.pdf
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HD66712U
Interfacing the HD66712
Interface with 8-Bit MPUs: The HD66712 can interface directly with an 8-bit MPU using the E clock,
or with an 8-bit MCU through an I/O port.
When the number of I/O ports in the MCU, or the interfacing bus width, if limited, a 4-bit interface
function is used.
414
RS
R/W
E
Internal
signal
DB7
Figure 18 Example of 8-Bit Data Transfer Timing Sequence
I/O port interface
Instruction
write
Data
H8/325
Figure 19 8-Bit MPU Interface
Busy flag check
A0–A7
Internal operation
C0
C1
C2
Busy
Busy flag check Busy flag check
8
Busy
E
RS
R/W
DB0–DB7
Not
Busy
HD66712
Instruction
write
Data
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