HD66717 datasheet(11/90 Pages) HITACHI

Part #	HD66717

Description	(Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver)

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Manufacturer	HITACHI [Hitachi Semiconductor]

Direct Link	http://www.renesas.com/eng

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HD66717

462

Table 1

Pin Functional Description (cont)

Signal

Number

of Pins

I/O

Device

Interfaced with Function

Vci

2

I

Power supply

Inputs a reference voltage and supplies power to the

booster; generates the liquid crystal display drive voltage

from the operating voltage.

V5OUT2

1

O

V

EE pin/ Booster

capacitance

Voltage input to the Vci pin is boosted twice and output.

When the voltage is boosted three times, the same

capacitance as that of C1–C2 should be connected here.

V5OUT3

1

O

V

EE pin

Voltage input to the Vci pin is boosted three times and

output.

C1/C2

2

—

Booster

capacitance

External capacitance should be connected here when

using the booster.

RESET*

1

I

—

Reset pin. Initializes the LSI when low.

EXM

1

I

MPU

External alternating signal used for annunciator display

during standby mode. If annunciator display is not used,

EXM must be fixed to V

CC or GND.

SFT

1

I

V

CC or GND

Selects the SEG output pin arrangement: when SFT =

GND, SEG1 is connected to the far left of the LCD panel

and when SFT = V

CC, SEG60 is connected to the far left of

the LCD panel

OPOFF

1

I

V

CC or GND

Turns the internal operational amplifier off when OPOFF =

V

CC, and turns it on when OPOFF = GND. If the amplifier is

turned off (OPOFF = V

CC), V1 to V5 must be supplied to the

V1OUT to V5OUT pins.

TEST

1

I

GND

Test pin. Must be grounded.

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