S6B33A2 Datasheet, PDF (18/67 Pages) Samsung semiconductor – 128 RGB Segment & 129 Common Driver For 4,096 Color STN LCD

S6B33A2 PRELIMINARY VER 1.3 128 RGB SEGMENT & 129 COMMON DRIVER FOR 4,096 COLOR STN LCD
/CS1
CS2
D/I
R/W
E
DB
Command Write
Data Write
Status Read
Data Read
Figure 8. 6800-Series MPU Interface protocol (MPU[1]=”H”)
/CS1
CS2
D/I
/WR
/RD
DB
Command Write
Data Write
Status Read
Data Read
Figure 9. 8080-Series MPU Interface Protocol (MPU[1]=”L”)
Serial Interface(PS=”L”)
Communication with the microprocessor occurs via a clock-synchronized serial peripheral interface when PS is low.
When using the serial interface, read operations are not allowed. When the chip select inputs are valid (/CS1 = “L” &
CS2 = “H”), the serial data is sent most significant bit first on the rising edge of a serial clock going into DB6 and
processed as 8 bit parallel data on the eighth clock. Since the clock signal is easy to be affected by the external
noise caused by the line length, the operation check on the actual machine is recommended. And Invalid, the
internal shift register and the counter are reset.
The serial interface type is selected by setting PS as shown in Table12.
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