W567CXXX Datasheet, PDF (5/13 Pages) List of Unclassifed Manufacturers – 16-CHANNEL SPEECH+MELODY PROCESSOR

W567CXXX
PIN NAME
VDDSPK
VSSSPK
VDD_BP1
CVDD
I/O
Power
Power
Power
O
FUNCTION
Positive power supply for speaker driver.
Negative power supply for speaker driver.
Positive power supply for BP1 including serial interface Management
(SIM).
For 3 battery(3.3V~5.5V) application ,add the capacitor 0.1uF to shunts
between CVDD and GND as power stability for regulator output.
For 2 battery(2.2V~3.6V) application, CVDD will connect to VDD directly.
Note: W567C151/171 without CVDD pin, the application circuit don’t need
consider 3/2 battery application.
4. BLOCK DIAGRAM
RESETB
OSCIN OSCOUT
BP10~17 BP20~27 BP00~07
BP13~16
Timing
Generator
Timers
Interrupt
&
Serial
Controller _{HQ generator} Interface
I/O
8 bits uP
Address/Data Bus
Data RAM
Program ROM
WDT
Mixer
DAC/
PWM
DAC/PWM+
PWM-
-5-