
HD61604/HD61605
1271
HD61605 Pin Function
READY (Ready):
During data setting in the display data RAM and mode setting latch in the LSI after
data transfer, low is output to the READY pin to inhibit the next data input.
There are two modes: one in which low is output only when both of
&6
and
5(
are low, and the other in
which low is output regardless of
&6
and
5(
.
&6
(Chip Select):
Chip select input. Data can be written only when this pin is low.
:(
(Write Enable):
Write enable input. Input data of D0 to D3 is latched at the positive edge of
:(
.
5(
(Reset):
Resets the input data byte counter. After both of
&6
and
5(
are low, the first data is
recognized as the first byte data.
SB (Standby):
High level input stops the LSI operation.
1. Stops oscillation and clock input.
2. Stops LCD driver.
3. Stops writing data into display RAM.
D0–D3:
Data input pin from which 4-bit
×
4-byte data is input.
SYNC (Synchronous):
Synchronous input for 2 or more chips application. LCD drive timing generator is
reset by high input. LCD is off.
COM0 (Common):
LCD common (backplate) drive output
.
SEG0–SEG63 (Segment):
LCD segment drive output.
OSC1, OSC2 (Oscillator):
Attach external R to these pins for oscillation. An external clock (100 kHz)
can be input from OSC1.
V3 (LCD Voltage):
Power supply input for LCD drive.
Voltage between VDD and V3 is used as drive voltage.
VSS:
Negative power supply.
VDD:
Positive power supply.