S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 375

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

S1D15705 Series
10–16
Pin name
CLS
M/S
CL
FR
SYNC
DOF
IRS
HPM
I/O
I/O
I/O
I/O
I/O
I
I
I
I
Pin that selects the validity/invalidity of the built-in oscillator circuit
for display clocks.
When CLS=LOW, display clocks are input from the CL pin.
When the S1D15705 series is used for the master/slave
configuration, each of the CLS pins is set to the same level together.
Pin that selects the master/slave operation for the S1D15705 series.
The liquid crystal display system is synchronized by outputting the
timing signal required for the liquid crystal display for the master
operation and inputting the timing signal required for the liquid
crystal display for the slave operation.
According to the M/S and CLS states, the following table is given.
Display clock I/O pin
According to the M/S and CLS states, the following table is given.
When the S1D15705 series is used for the master/slave
configuration, each CL pin is connected.
When the SED15705 series is used for the master/slave
configuration, each FR pin is connected.
When the S1D15705 series is used for the master/slave
configuration, each SYNC pin is connected.
Liquid crystal display blanking control pin
When the S1D15705 series is used for the master/slave
configuration, each DOF pin is connected.
V
by the VR pin and stand-alone split resistor.
Valid only at master operation. The pin is fixed to HIGH or LOW at
slave operation.
Power supply control pin of the power supply circuit for liquid
crystal drive
Valid only at master operation. The pin is fixed to HIGH or LOW at
slave operation.
Liquid crystal alternating current signal I/O pin
Liquid crystal synchronizing current signal I/O pin
HIGH HIGH
LOW HIGH Invalid
M/S CLS Oscillator Power supply CL
5
CLS=HIGH: Built-in oscillator circuit valid
CLS=LOW: Built-in oscillator circuit invalid (external input)
M/S=HIGH : Master operation
M/S=LOW : Slave operation
M/S=HIGH : Output
M/S=LOW : Input
M/S=HIGH : Output
M/S=LOW : Input
M/S=HIGH : Output
M/S=LOW : Input
IRS=HIGH: Built-in resistor used
IRS=LOW: Built-in resistor not used. The V
HPM=HIGH : Normal mode
HPM=LOW : High power supply mode
HIGH HIGH Output
Display clock
Built-in oscillator circuit used
External input
LOW HIGH
M/S
voltage adjusting resistor selection pin
LOW
LOW
LOW
LOW
CLS
circuit
Invalid
Invalid
Valid
Input
Input
Input
CL
circuit
Invalid
Invalid
Description
Valid
Valid
EPSON
Output Output Output Output Output
Master
Input Output Output Output Output
Input
Input
HIGH
LOW
Input
Input
FR
5
Slave
HIGH
LOW
voltage is adjusted
SYNC FRS
Input Output Input
Input Output Input
DOF
Number of
Rev. 3.1a
pins
1
1
1
1
2
1
1
1