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PCF1174CT Datasheet(PDF) 4 Page - NXP Semiconductors

Part # PCF1174CT
Description  4-digit static LCD car clock
PDF  20 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF1174CT Datasheet(HTML) 4 Page - NXP Semiconductors

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1997 Apr 16
4
Philips Semiconductors
Product specification
4-digit static LCD car clock
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) =0V.
Fig.2 Segment designation of LCD.
MSA992
A2
G2
D2
F2
E2
B2
C2
P1 (P3)
P2 (P4)
A3
G3
D3
F3
E3
B3
C3
A4
G4
D4
F4
E4
B4
C4
AM
PM
A1
G1
D1
E1
B1
C1
Fig.3 Typical displays.
a. 12-hour mode.
b. 24-hour mode.
PM
TIME
MSA993
(a)
MSA994
TIME
(b)
Fig.4 Backplane and output signals.
MSA996
VDD
0
BP
VDD
0
OFF
VDD
0
ON
SEGMENT
15.625 ms



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