ST7533 Sitronix Technology, ST7533 Datasheet - Page 14

• Manufacturer Part Number: ST7533
• Description: 33 x 96 Dot Matrix LCD Controller/Driver
• Manufacturer: Sitronix Technology

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ST7533
The Busy Flag
When the busy flag is “1” it indicates that the ST7533 is
running internal processes, and at this time no command
aside from a status read will be received. The busy flag is
outputted to D7 pin with the read instruction. If the cycle time
Ver 1.0
WR
DATA
BUS Holder
Write Signal
WR
RD
DATA
Address Preset
Read Signal
Column Address
Bus Holder
N
N
Address Set
#n
N
N
Preset N
Reading
Writing
N+1
N
14/60
Figure 2
Dummy
Read
(
before each command. This makes vast improvements in
MPU processing capabilities possible.
t
CYC
N+1
) is maintained, it is not necessary to check for this flag
n
Increment N+1
N+2
n
Data Read #n
N+2
n+1
N+2
N+3
n+1
Data Read
2003/07/21
#n+1
N+3
n+2