W561XXX Datasheet, PDF (4/7 Pages) Winbond – 4-CH MELODY WITH VOICE SYNTHESIZER

W561XXX
BLOCK DIAGRAM
P0 P1 P2 P3
I/O
Controller
RAM
Special Register
Timing
Generator
ROM
ALU
Timer
OSCI
OSCO
OSCSEL
Synthesizer II
Synthesizer I
DAC2
DAC1
TrueMelody
Generator
Timbre
Table
PAD DESCRIPTION
PARAMETER I/O
TEST
I
P0.0−P0.3
I
P1.0−P1.3
I/O
P2.0−P2.3
I/O
P3.0−P3.3
O
VSS
-
RESET
I
VDD
-
OSCI
I
OSCO
O
DAC1
O
DAC2
O
OSCSEL
I
DESCRIPTION
Test pin, internally pulled low
Interruptable input pins, internally pulled high.
I/O multiplexed port 1. The port 1 is interruptable, if selected as input
pins
I/O multiplexed port 2.
Output port 3.
Negative power supply.
Reset all, functions as POR (Power On Reset), internally pulled high.
Positive power supply.
Connect ROSC to VDD or Crystal between OSCI & OSCO to generate
the 3 MHz master frequency.
Current output of channel 1 for driving an external speaker
Current output of channel 2 for driving an external speaker
Oscillator type selecting pin, internally kept floating. Connect to VDD to
select Crystal type, connect to GND to select ring oscillator type.
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