W567BXXX Datasheet, PDF (9/13 Pages) List of Unclassifed Manufacturers – microcontroller

6.2 W567B030~B260 (Ring as main system clock)
+
Battery
4.7uF
10
0.1uF
ROSC
VDD
IP00
|
VDDOSC
IP07
BP00
|
BP07
OSCI
W567B030
|
W567B260
BP10
|
BP17
BP20
|
BP27
OP00
|
OP07
Reset
Switch
/RESET
0.1uF
VSSOSC
DAC
VSS
W567BXXX
VDD
Speaker
8050
Rs
Notes:
1. The typical value of Rosc is 150 K for 8 MHz and 300 K for 4 MHz, and should be connected to GND (VSS).
2. Please refer to design guide to get typical Rosc value for each part number.
3. For W567B030~B260, VSSOSC should be connected to VSS; VDDOSC should be connected to VDD in PCB layout.
4. The Rs value is suggested in 270 ~ 1K to limit too large DAC output current flowing into transistor.
5. The 10 and 0.1uF between VDD, VDDOSC and GND are optional to filter power noise.
6. The capacitor, 4.7uF, shunts between VDD and GND is necessary as power stability. But the value of capacitor is
depend on the application.
7. The above application circuit is for reference only. No warranty for mass production.
Publication Release Date: May 2009
-9-
Revision A10