HT0313A Tomato LSI, Inc., HT0313A Datasheet - Page 13

• Manufacturer Part Number: HT0313A
• Description: 65COM/132SEG DRIVER & CONTROLLER FOR STN LCD
• Manufacturer: Tomato LSI, Inc.

HT0313A
TOMATO LSI Inc.
Table 5-1. Pin description (continued)
System control
DSEL1
DSEL0
INTRS
Name
DISP
HPM
CLS
FRS
MS
CL
M
I/O
I/O
I/O
I/O
O
65COM / 132SEG DRIVER & CONTROLLER FOR STN LCD
I
I
I
I
I
Built-in oscillator circuit enables / disable select pin.
CLS = “H”: Enable
CLS = ”L”: Disable (external display clock input to CL pin)
Display clock input / output pin. When HT0313A is used in master/slave mode(multi-chip),
the CL pin must be connected to each other.
LCD AC signal input / output pin.
When HT0313A is used in master/slave mode(multi-chip), the M pin must be connected to
each other.
MS = “H”: Output
MS = “L”: Input
Static driver segment output. This pin is used together with the M pin.
LCD display blanking control input/output. When HT0313A is used in master/slave mode
(multi-chip), the DISP pin must be connected to each other.
MS = “H”: Output
MS = “L”: Input
Internal resistor selects pin.
This pin selects the resistor for adjusting V0 voltage level and is available only in master
mode.
INTRS = “H”: using built-in resistors.
INTRS = “L”: not using built-in resistors.
V0 voltage is controlled by VR pin with external resistive divider.
Power control pins of the power supply circuit for the LCD driver.
HPM = “H”: High power mode.
HPM = “L”: Normal mode
This pin is available only in the master mode.
The LCD driver duty ratio depends on the following table.
Master/slave mode select input. Master makes some signals for display, and slave
receives them. This for display synchronization.
MS =”H”: Master mode
MS =”L”: Slave mode
13
MS
H
L
CLS
DSEL1
H
L
-
H
L
L
Circuit
Disable
Disable
Enable
OSC
Supply
Disable
Power
Enable
Enable
Description
DSEL0
H/L
Output
H
L
Input
Input
CL
Output
Output
Input
M
Output
Output
Output
FRS
Duty ratio
Ver 0.0
1/33
1/49
1/65
Output
Output
DISP
Input