PCF1171CU Philips Semiconductors, PCF1171CU Datasheet - Page 9

• Manufacturer Part Number: PCF1171CU
• Description: 4-digit LCD car clock
• Manufacturer: Philips Semiconductors

Philips Semiconductors
APPLICATION INFORMATION
1997 Apr 16
4-digit LCD car clock
(1) Only required if internal regulation is disconnected.
From pin 2 (OSC IN) to any other pin the stray capacitance should not exceed 2 pF.
S5
12/24 hour mode
S6
selectable
correction mode
S3
S2
set minutes
S1
set hour
2 minutes correction
battery
V DD
V SS
V DD
V SS
R = 4.7 k
S3
S2
S1
S6
S5
to 8.2 k
S4
internal voltage
regulation
21
22
4
18
3
Fig.5 Typical application diagram.
23
V DD
I
EXT
REGULATOR
I REG
38
VOLTAGE
SHUNT
TR
19
C
39
S4
T
TS
= 5 pF to 25 pF
I
9
DD
20
(V
40
V SS
2 I
DD
PCF1171C
i
)
2
4.19 MHz
OSC
IN
1
OSC
OUT
segment
drivers
to LCD
33 F to
100 F
Product specification
PCF1171C
MSA982
(1)