S6B0728 datasheet(9/60 Pages) SAMSUNG

Part #	S6B0728

Description	132 SEG / 128 COM DRIVER & CONTROLLER FOR STN LCD

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Manufacturer	SAMSUNG [Samsung semiconductor]

Direct Link	http://www.samsung.com/Products/Semiconductor

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9 / 60 page

132 SEG / 128 COM DRIVER & CONTROLLER FOR STN LCD

PRELIMINARY SPEC. VER. 0.1

S6B0728

6

PIN DESCRIPTION

Table 3. Power Supply Pins

Name

I/O

Description

VDD

Supply

Power supply

Vss

Supply

Ground

LCD drivers supply voltages

The voltage determined by LCD pixel is impedance-converted by an operational amplifier

for application.

Voltages should have the following relationship: V0

≥ V1 ≥ V2 ≥ V3 ≥ V4 ≥ Vss

When the internal power circuit is active, these voltages are generated as following table

according to the state of LCD bias.

LCD bias

V1

V2

V3

V4

1/N bias

(N-1)/N x V0

(N-2)/N x V0

2/N x V0

1/N x V0

V0

V1

V2

V3

V4

I/O

NOTE : *N = 5 to 12

Table 4. LCD Driver Supply Pins

Name

I/O

Description

C1-, C2-

I/O

Capacitor negative connection pins used for voltage converter

C1+, C2+

C3+, C4+

C5+, C6+

I/O

Capacitor positive connection pins used for voltage converter

VOUT

I/O

Voltage converter input/output pin.

VOUT = Boost level

× VCI, for internal booster

VCI

I

Voltage converter input voltage pin for internal booster.

VR

I

V0 voltage adjustment pin used to adjust V0 by means of external resistors(INTRS = “ L”)

REF

I

Selects the external VREF voltage via VEXT pin

− REF = "L": using the external VREF

− REF = "H": using the internal VREF

VEXT

I

Externally-input reference voltage(VREF) for the internal voltage regulator.

It is valid only when REF is “ L”.

INTRS

I

Internal resistors select pin used to select resistors for adjusting V0 voltage level.

− INTRS = "H”: use the internal resistors.

− INTRS = "L”: use the external resistors. VR pin and external resistive divider control V0

voltage.

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