W536A031 Datasheet, PDF (7/16 Pages) Winbond – VOICE/MELODY/LCD CONTROLLER

W536A031
Pad Description, continued
SYMBOL
I/O
FUNCTION
PWM1/DAC
O
While speech or melody is active, PWM1/DAC is speaker direct driving
output or DAC output controlled by voice output file.
PWM2
O
While speech or melody is active, PWM2 is another speaker direct
driving output.
SEG0−SEG39
O Dedicated LCD segment output pads.
SEG40/PORTN.0

SEG43/PORTN.3
O/O
LCD segment output pads, and can be shared as general output by
register LCDM3 bit 1. Default function is segment pad.
SEG44/PORTM.0
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
SEG47/PORTM.3
inhibit LCD waveform abnormal.
SEG48/PORTL.0

SEG51/PORTL.3
O/O
LCD segment output pads, and can be shared as general output by
register LCDM2 bit 3. Default function is segment pad.
SEG52/PORTK.0

SEG55/PORTK.3
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.
SEG56/PORTJ.0

SEG59/PORTJ.3
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.
SEG60/PORTI.0

SEG63/PORTI.3
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.
COM0−COM7
LCD common signal output pads either 1/16 duty or 1/8 duty. The LCD
O frame rate is controlled by LCDM1 register, and default value
LCDM1=0111b with 64Hz frame rate.
COM8 / PORTP.0
LCD common signal output pads, or shared as general output by

O/O register LCDM3.2 when in 1/8 duty mode. Default function is common
COM11/PORTP.3
function.
COM12/PORTO.
0

COM15/PORTO.
3
LCD common signal output pads, or shared as general input by register
O/I LCDM3.2 when in 1/8 duty mode. Default function is common function
and PM5.2 = 0 to inhibit LCD waveform abnormal.
Publication Release Date: May 20, 2003
-7-
Revision A2