HD66730 Datasheet, PDF (87/131 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display

HD66730/HD66731
i) Continuous data write by polling processing
SCLK
(input)
SID
(input)
SOD
(output)
Start
byte
Instruction (1)
1st byte 2nd byte
Start
byte
Instruction (1)
execution
time
Busy
read
Start
byte
Instruction (2)
1st byte 2nd byte
Instruction waiting time (not busy state)
ii) Continuous data write by CPU wait insert
SCLK
(input)
SID
(input)
Wait
Wait
Start
byte
Instruction (1)
1st byte 2nd byte
Instruction (2)
1st byte 2nd byte
Instruction (1)
execution time
Instruction (3)
1st byte 2nd byte
Instruction (2)
execution time
Instruction (3)
execution time
iii) Continuous data write by CPU wait insert
SCLK
(input)
SID
(input)
Start
byte
Wait
SOD
(output)
RAM data
read time (1)
Wait
Data
read (1)
RAM data
read time (2)
Wait
Data
read (2)
RAM data
read time (3)
Figure 21 Procedure for Continuous Data Transfer
86