SED1565 EPSON [Epson Company], SED1565 Datasheet - Page 24

• Manufacturer Part Number: SED1565
• Description: Direct display of RAM data through the display data RAM
• Manufacturer: EPSON [Epson Company]

SED1565 Series
8–22
Pin Name
CLS
M/S
CL
FR
DOF
FRS
IRS
HPM
I/O
I/O
I/O
I/O
O
I
I
I
I
Terminal to select whether or enable or disable the display clock internal
oscillator circuit.
When CLS = “L”, input the display clock through the CL terminal.
This terminal selects the master/slave operation for the SED1565 Series
chips. Master operation outputs the timing signals that are required for the
LCD display, while slave operation inputs the timing signals required for the
liquid crystal display, synchronizing the liquid crystal display system.
The following is true depending on the M/S and CLS status:
This is the display clock input terminal
The following is true depending on the M/S and CLS status.
When the SED1565 Series chips are used in master/slave mode, the
various CL terminals must be connected.
This is the liquid crystal alternating current signal I/O terminal.
When the SED1565 Series chip is used in master/slave mode, the various
FR terminals must be connected.
This is the liquid crystal display blanking control terminal.
When the SED1565 Series chip is used in master/slave mode, the various
DOF terminals must be connected.
This is the output terminal for the static drive.
This terminal is only enabled when the static indicator display is ON when
in master operation mode, and is used in conjunction with the FR terminal.
This terminal selects the resistors for the V5 voltage level adjustment.
regulated by an external resistive voltage divider attached to the VR
terminal.
This pin is enabled only when the master operation mode is selected.
It is fixed to either “H” or “L” when the slave operation mode is selected.
This is the power control terminal for the power supply circuit for liquid
crystal drive.
This pin is enabled only when the master operation mode is selected.
It is fixed to either “H” or “L” when the slave operation mode is selected.
M/S CLS
“H”
“L”
M/S
“H”
“L”
CLS = “H”: Internal oscillator circuit is enabled
CLS = “L”: Internal oscillator circuit is disabled (requires external input)
M/S = “H”: Master operation
M/S = “L”: Slave operation
M/S = “H”: Output
M/S = “L”: Input
M/S = “H”: Output
M/S = “L”: Input
IRS = “H”: Use the internal resistors
IRS = “L”: Do not use the internal resistors. The V5 voltage level is
HPM = “H”: Normal mode
HPM = “L”: High power mode
“H”
“H”
“L”
“L”
CLS
“H”
“H”
“L”
“L”
Oscillator
Disabled
Disabled
Disabled
Enabled
Circuit
Output
Input
Input
Input
CL
Disabled
Disabled
Enabled
Enabled
EPSON
Supply
Circuit
Power
Function
Output
Input
Input
Input
CL
Output
Output
Input
Input
FR
Output
Output
Output
Output
FRS
Output
Output
Input
Input
DOF
No. of
Pins
1
1
1
1
1
1
1
1