PCF1178CT View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

PCF1178CT

4-digit duplex LCD car clock

Philips Electronics 

Philips Semiconductors

4-digit duplex LCD car clock

LCD voltage (see Fig.5)

The adjustable voltage regulator controls the supply

voltage (see Section “LCD voltage programming”) in

relation to temperature for good contrast, for example

when VDD = 4.5 V at +25 °C, then:

VDD = 3 to 4 V at +85 °C.

VDD = 5 to 6 V at −40 °C.

Product specification

PCF1178C

−8

V SS

(V)

−6

(3)

(2)

−4

(1)

MSA995

−2

0

40

0

40

80 T ( o C) 120

(1) Programmed to 4.0 V at 25 °C (value within the specified operating range).

(2) Programmed to 4.5 V at 25 °C (value within the specified operating range).

(3) Programmed to 5.0 V at 25 °C (value within the specified operating range).

Fig.5 Regulated voltage as a function of temperature (typical).

1997 Apr 16

5

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