S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 281

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

S1D15605 Series
The Busy Flag
When the busy flag is “1” it indicates that the S1D15605
Series chip 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
8–26
WR
DATA
BUS Holder
Write Signal
WR
RD
DATA
Address Preset
Read Signal
Column Address
Bus Holder
Address Set
N
N
#n
Latch
N
Preset N
N
EPSON
Reading
Figure 2
Writing
N+1
N
Dummy
Read
read instruction. If the cycle time (
it is not necessary to check for this flag before each
command. This makes vast improvements in MPU
processing capabilities possible.
N+1
Increment N+1
n
N+2
Data Read
n
#n
N+2
n+1
N+2
t
Data Read
CYC
N+3
n+1
#n+1
) is maintained,
N+3
n+2
Rev. 2.4a