PCF1174CT Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
PCF1174CT Datasheet PDF : 20 Pages
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Philips Semiconductors
4-digit static LCD car clock
Product specification
PCF1174C
FUNCTIONAL DESCRIPTION AND TESTING
Outputs
The circuit outputs static data to the LCD. Generation of
BP and the output signals are shown in Fig.4.
The average voltages across the segments are:
1. VON(RMS) = VDD
2. VOFF(RMS) = 0 V.
AM
A1
A2
A3
A4
G1
B1 F2
G2
B2 P1 (P3) F3
G3
B3 F4
G4
B4
PM E1
C1 E2
C2 P2 (P4) E3
C3 E4
C4
D1
D2
D3
D4
MSA992
Fig.2 Segment designation of LCD.
TIME
PM
(a)
a. 12-hour mode.
MSA993
TIME
(b)
b. 24-hour mode.
MSA994
Fig.3 Typical displays.
VDD
BP
0
SEGMENT
OFF
VDD
0
VDD
ON
0
15.625 ms
MSA996
Fig.4 Backplane and output signals.
1997 Apr 16
4
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