S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 172

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

Rev. 1.0
SEG0-SEG72 Output terminal
COM0-COM3 Output terminals (The function of the COM2 and COM3 output terminals changes
LCD Panel Driving Circuit Terminals
Terminal
OSC1
OSC2
name
MS
FR
A terminal for connecting a resistor for internal oscillation.
When M/S = 0, internal oscillation is prohibited, making OCS2 serve as a clock input
terminal in the opposite phase to OCS1. During the power-saving mode, oscillation and
clock input are prohibited, making OCS2 work as a high-impedance terminal. (See the
explanation of functions.)
Input/output terminal
An input/output terminal for AC control signals for the LCD panel.
M/S = 1: Output
M/S = 0: Input
Output for driving the LCD segments. Depending on the combination of the FR signal
and the contents of the display RAM, one of the V
depending on the duty select command.)
They are common (LOW) output terminals for driving the LCD panel. Depending on the
combination of the FR signal and the output from the common counter, one of the V
V
Counter output
Output level
Input
A terminal that selects whether the MPU operates as a master or slave of the S1D15400.
It connects to V
OSC2 terminals.
M/S = V
* When the FR signal is used to establish synchronization between the master and slave
ICs, both of them will output the same waveforms from the COM terminal.
1
, V
= V
2
, and V
DD
SS
: Master
: Slave
FR
COUNTER
OUTPUT
LEVEL
FR
DATA
OUTPUT
LEVEL
3
levels is selected.
DD
M/S
V
V
DD
DD
or V
SS
output
output
. This terminal determines the function of the FR, OSC1, and
FR
V
1
DD
V
1
3
OSC1 OSC2 COMOutput
EPSON
Input
Input
1
1
V
0
V
2
0
1
Description
output
output
V
1
V
3
1
DD
0
0
V
0
V
1
0
DD
2
Enabled
Enabled
, V
1
, V
2
, and V
3
levels is selected.
S1D15400 Series
DD
,
6–7