hd66740 Renesas Electronics Corporation., hd66740 Datasheet - Page 11

• Manufacturer Part Number: hd66740
• Description: 112 X 80-dot Graphics Lcd Controller/driver - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

Table 2
Signals
C1+, C1–
C2+, C2–
C3+, C3–
C4+, C4–
RESET*
OPOFF
VccDUM
GNDDUM
Dummy
TEST
VTEST1
VTEST2
VTEST3
Number of
Pins
8
6
6
6
1
1
1
1
5
1
1
1
1
Pin Functional Description (cont)
I/O
—
—
—
—
I
I
O
O
—
I
I
—
I
Connected to
Booster
capacitance
Booster
capacitance
Booster
capacitance
Booster
capacitance
MPU or external
R-C circuit
V
Input pins
Input pins
—
GND
GND or V
—
V
CC
CC
or GND
or GND
CC
Functions
External capacitance should be connected here for
boosting.
External capacitance should be connected here when
using the triple or more booster.
External capacitance should be connected here when
using the quadruple and five-times booster.
External capacitance should be connected here when
using the five-times booster.
Reset pin. Initializes the LSI when low.
Turns the internal operational amplifier off when
OPOFF = V
the amplifier is turned off (OPOFF = V
must be supplied to the V1OUT to V5OUT pins.
Outputs the internal V
adjacent input pin to the V
Outputs the internal GND level; shorting this pin sets
the adjacent input pin to the GND level.
Dummy pad.
Test pin.
Adjusts the driving capability of the internal operationa
amplifier for the LCD.
drive mode in the GND side, and it enters the high-
power drive mode in the V
quality is not sufficient, use the high-power drive mode
even though the power-consumption current is large.
Test pin.
Adjusts the driving capability of the internal operationa
amplifier for the LCD.
drive mode or high-power mode in the GND side
according to the VTEST1 pin setting, and it enters the
low-power drive mode in the V
in the low-power mode so that the display quality is no
lowered.
11
Must be fixed at GND level.
Must be left disconnected.
CC
, and turns it on when OPOFF = GND. If
Must be left disconnected.
CC
This signal enters the normal
This signal enters the normal
level; shorting this pin sets the
CC
CC
level.
side.
CC
side.
When the display
CC
), V1 to V5
Use this signa
HD66740