HD66712 Datasheet, PDF (51/88 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver

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.
RS
R/W
E
Internal
signal
DB7
Data
Instruction
write
Internal operation
Busy
Busy
Not
Busy
Data
Busy flag check
Busy flag check
Busy flag check
Instruction
write
Figure 18 Example of 8-Bit Data Transfer Timing Sequence
I/O port interface
C0
C1
H8/325
C2
8
A0–A7
E
RS
R/W ^HD66712
DB0–DB7
Figure 19 8-Bit MPU Interface
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