W536020K Datasheet, PDF (7/16 Pages) Winbond – VOICE/MELODY/LCD CONTROLLER (ViewTalk TM Series)

W536020K/030K/060K/090K/120K
PAD Description, continued
SYMBOL
I/O
FUNCTION
RES
TEST
ROSC
I System reset pad, active low with internal pull-high resistor.
I Test pad. Active high with internal pull low resistor.
I
Connect resistor to V_DD pad to generate speech or melody playing
clock source.
PWM1/DAC
PWM2
O
While speech or melody is active, PWM1/DAC is speaker direct driving
output or DAC output controlled by voice output file.
O
While speech or melody is active, PWM2 is another speaker direct
driving output.
ADDR (5)
CLK (5)
O
External serial memory address write clock for voice extension
(W536120K only).
O
External serial memory address read clock for voice extension.
(W536120K only).
DATA (5)
I/O
External serial memory data in/out for voice extension (W536120K
only).
SEG0−SEG15
O Dedicated LCD segment output pads.
SEG16/PORTN.0

SEG19/PORTN.3
SEG20/PORTM.0

SEG23/PORTM.3
SEG24/PORTL.0

SEG27/PORTL.3
SEG28/PORTK.0

SEG31/PORTK.3
SEG32/PORTJ.0

SEG35/PORTJ.3
SEG36/PORTI.0

SEG39/PORTI.3
O/O
LCD segment output pads, and can be shared as general output by
register LCDM3 bit 1. Default function is segment pad.
LCD segment output pads, and can be shared as general input by
O/I register LCDM3 bit 0. Default function is segment pad and PM5.1=0 to
inhibit LCD waveform abnormal.
O/O
LCD segment output pads, and can be shared as general output by
register LCDM2 bit 3. Default function is segment pad.
LCD segment output pads, and can be shared as general input by
O/I register LCDM2 bit 2. Default function is segment pad and PM5.0=0 to
inhibit LCD waveform abnormal.
O/IO
LCD segment output pads, and can be shared as general input/output
by register LCDM2 bit 1. PM4 register is used to select input or output
while shared I/O function is active. Default function is segment pad and
PM4.3 = 0 to inhibit LCD waveform abnormal.
O/IO
LCD segment output pads, and can be shared as general input/output
by register LCDM2 bit 0. PM4 register is used to select input or output
while shared I/O function is active. Default function is segment pad and
PM4.2 = 0 to inhibit LCD waveform abnormal.
Publication Release Date: May 21, 2003
-7-
Revision A3