W536030T Datasheet, PDF (8/16 Pages) Winbond – VOICE/MELODY/LCD CONTROLLER

W536030T/060T/090T/120T
PAD Description, continued
SYMBOL
COM0−COM15
I/O
FUNCTION
LCD common signal output pads either 1/32 duty or 1/16 duty. The LCD
O frame rate is controlled by LCDM1 register, and default value LCDM1 =
0111b with 64Hz frame rate.
COM16−COM23
LCD common signal output pads while 1/32 duty is active. The LCD
O frame rate is controlled by LCDM1 register, and default value LCDM1 =
0111b with 64Hz frame rate.
COM24/PORTP.0
LCD common signal output pads, or shared as general output by

O/O register LCDM3.2 when in 1/16 duty mode. Default function is common
COM27/PORTP.3
function.
COM28/PORTO.0
LCD common signal output pads, or shared as general input by register

O/I LCDM3.2 when in 1/16 duty mode. Default function is common function
COM31/PORTO.3
and PM5.2 = 0 to inhibit LCD waveform abnormal.
DH1, DH2 (6)
Connection terminal for voltage double capacitor with 0.1uF. The DH2
O connects to capacitor positive node and DH1 negative node if polar
capacitor is used.
V3 ~ V6 (6)
O
LCD COM/SEG output driving voltage. Need an external 0.1uF
capacitor to every pad terminal.
V2 (6)
Voltage regulator output pad. An external capacitor is a must. Output
level can be controlled from 0~Fh by LCDM4 register. If internal pump
is enabled (LCDM3.3 = 0 and default value), LCD operating voltage
I/O
(VLCD) will be 4*V2 or 5*V2 depending on 1/4 bias or 1/5 bias. A
limitation should be noted that VLCD must be higher than (V_DD -0.5v) to
avoid chip leakage current. While external reference voltage is selected
(LCDM3.3 = 1), V2 pad input voltage can not be over 1.5 Volt to inhibit
chip damage.
V_SSP
I Power ground for PWM or DAC playing output.
V_SSA (7)
I Power ground. (For w536090/120T only)
V_SS
I Power ground
V_DDP
I Power source for PWM or DAC playing output.
V_DDA (7)
I Power source. (For w536090/120T only)
V_DD
I Power source.
Notes:
(4). RD1~3 are shared as CLK/DATA/ADDR to interface with W55XXX @W536030T/060T
(5). @W536120T only
(6). 0.1uF is default value, and capacitor value should be larger than 0.1uF if LCD dot size over 0.5mm*0.5mm.
(7). External application circuit should connect together, please refer to APPLICATION CIRCUIT. To sure chip operation
properly, please bond all V_DDP, V_DDA, V_DD, V_SSP, V_SS and V_SSA pads and connect V_SSP, V_SS from chip outside PCB circuit.
V_SSA and V_DDA are for W536090/120T only
(8). When working at NMOS open drain mode, external pull high voltage can't higher than V_DD to avoid leakage current.
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