U4224B TEMIC Semiconductors, U4224B Datasheet - Page 9

• Manufacturer Part Number: U4224B
• Description: Time Code Receiver
• Manufacturer: TEMIC Semiconductors

TELEFUNKEN Semiconductors
Rev. A3, 02-Apr-96
Application Circuit for DCF 77.5 kHz
Application Circuit for WWVB 60 kHz
Ferrite Antenna
f
Ferrite Antenna
f
res
res
= 60 kHz
= 77.5 kHz
77.5 kHz
60 kHz
6.8 nF
15 nF
10 k
RSB
2)
2)
C
C
+ V
1
+ V
1
W
CC
CC
1
2
3
4
5
6
7
8
4
5
6
7
8
1
2
3
U4224B
U4224B
14
13
12
11
10
16
15
77.5 kHz
14
13
12
11
10
16
15
60 kHz
9
9
C
10 nF
C
33 nF
10 nF
C
C
47 nF
3
2
3
2
PON
PON
SL
SL
TCO
TCO
1)
2)
3)
1)
2)
3)
1)
If IC is activated, PON is connected to GND
3)
If SL is not used, SL is connected to V
60 kHz crystal can be replaced by 10 pF
1)
If SL is not used, SL is connected to V
77.5 kHz crystal can be replaced by 10 pF
If IC is activated, PON is connected to GND
3)
CONTROL LINES
MICROCOMPUTER
CONTROL LINES
MICROCOMPUTER
DISPLAY
DISPLAY
U4224B
KEYBOARD
KEYBOARD
94 8279 e
94 8278 e
CC
CC
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