SL20T0081 System Logic Semiconductor, SL20T0081 Datasheet - Page 10

• Manufacturer Part Number: SL20T0081
• Description: SLS System Logic Semiconductor
• Manufacturer: System Logic Semiconductor

SLS System Logic Semiconductor
System Control pins
Pin Name
DUTY0
DUTY1
DUTY2
SYNC
HPMB
DISP
CLS
MS
CL
I/O
I/O
I/O
I/O
I
I
I
I
This pin selects the master/slave operation for the SL20T0081 chip. 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.
Following table shows difference of the master operation and the slave operation.
This is the display clock input/output pin.
When multiple SL20T0081 chips are used in master/slave mode, all of CL pins must be
connected each other.
Internal RC oscillator enable pin.
When CLS=0, the display clock must be inputted through the CL pin.
This pin is valid only when SL20T0081 operating in master operation.
LCD synchronization signal input/output pin.
When multiple SL20T0081 chips are used in master/slave mode, all of SYNC pins must be
connected each other.
This is the liquid crystal display blanking control pin.
connected each other.
The LCD driver duty ratio selection pins.
changed. At this mode, all even numbered common output pins are outputting right side of
the device and all odd numbered common output pins are outputting left side of the
device.
This is the power control pin 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 0 or 1 when the slave operation mode is selected.
When multiple SL20T0081 chips are used in master/slave mode, all of DISP pins must be
When Duty = (1, 1, 1), 1/81 duty ratio is selected, and common output pin configuration is
CLS = 1
CLS = 0
HPMB = 1
HPMB = 0
MS = 1
MS = 0
MS
1
0
DUTY2
1
1
0
0
0
0
CLS
1
0
-
: Master operation
: Slave operation
: Internal oscillator circuit is enabled.
: Internal oscillator circuit is disabled.
: Normal mode
: High power mode
DUTY1
Internal Oscillator
1
0
1
1
0
0
Disabled
Disabled
Enabled
Circuit
DUTY0
1
0
1
0
1
0
Function
Internal Power
Supply Circuit
Disabled
Enabled
Enabled
Duty ratio
1/81
1/81
1/65
1/55
1/49
1/33
Output
Input
Input
CL
Common Output
Output
Output
Even, Odd
SYNC
Input
normal
SL20T0081
“
“
“
“
Output
Output
DISP
Input