U4223B ATMEL Corporation, U4223B Datasheet - Page 10

• Manufacturer Part Number: U4223B
• Description: Time-code Receiver With A/d Converter
• Manufacturer: ATMEL Corporation

Application Circuit for DCF 77.5 kHz
Application Circuit for WWVB 60 kHz
U4223B
10 (18)
f
f
res
Antenna
res
Ferrite
Antenna
Ferrite
= 77.5 kHz
77.5 kHz
= 60 kHz
60 kHz
6.8 nF
10 nF
33 nF
15 nF
10 nF
47 nF
C
C
C
C
2
C
3
2
2)
RSB
C
3
10 kW
1
2)
1
+V
+V
10
CC
4
5
6
7
8
9
1
2
3
10
CC
9
4
5
6
7
8
1
2
3
U4223B
U4223B
16
19
18
14
12
13
11
20
17
15
19
18
16
14
12
20
17
15
13
11
77.5 kHz
Figure 20.
Figure 21.
60 kHz
10 nF
10 nF
10 nF
10 nF
SL
10 nF
10 nF
10 nF
10 nF
SL
1)
1)
PON
PON
1)
2)
3)
4)
D0
D1
D2
D3
1)
2)
3)
4)
D0
D1
D2
D3
If SL is not used, SL is connected to VCC
60-kHz crystal can be replaced by 10 pF
If IC is activated, PON is connected to GND
Voltage swing 100 mV
CLK
3)
CLK
Voltage swing 100 mV
If SL is not used, SL is connected to VCC
77.5-kHz crystal can be replaced by 10 pF
If IC is activated, PON is connected to GND
3)
4)
4)
Microcomputer
Control lines
Control lines
Microcomputer
Display
Display
pp
pp
at Pin 12
at Pin 12
Rev. A7, 06-Mar-01
Keyboard
Keyboard