W567BXXX Datasheet, PDF (11/13 Pages) List of Unclassifed Manufacturers – microcontroller

6.4 W567B030~B260 (Crystal as main system clock)
+
Battery
4.7uF
10
0.1uF
4~8MHz Crystal
(for system clock)
VDD
IP00
|
VDDOSC
IP07
BP00
|
BP07
OSCI
OSCO
W567B030
|
W567B260
BP10
|
BP17
BP20
|
BP27
OP00
|
OP07
Reset
Switch
/RESET
0.1uF
VSSOSC
DAC
VSS
W567BXXX
VDD
Speaker
8050
Rs
Notes:
1.
2.
3.
4.
5.
For W567B030~B260, VSSOSC should be connected to VSS; VDDOSC should be connected to VDD in PCB layout.
The Rs value is suggested in 270 ~ 1K to limit too large DAC output current flowing into transistor.
The 10 and 0.1uF between VDD, VDDOSC and GND are optional to filter power noise.
The capacitor, 4.7uF, shunts between VDD and GND is necessary as power stability. But the value of capacitor is
depend on the application.
The above application circuit is for reference only. No warranty for mass production.
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Publication Release Date: May 2009
Revision A10