UPD16488AP NEC [NEC], UPD16488AP Datasheet - Page 13

• Manufacturer Part Number: UPD16488AP
• Description: 1/92 DUTY LCD CONTROLLER/DRIVER WITH FOUR-LEVEL GRAY SCALE, ON-CHIP RAM
• Manufacturer: NEC [NEC]

3.3
3.4
SEG
SEG
COM
COM
V
V
AMP
AMP
DUMMY
TSTIFS
TSTRTST
TSTVIHL
TEST
RS
R
Symbol
Symbol
1
128
OUT
OUTP
1
92
OUT
to
to
Driver-Related Pins
Test Pins
Segment
Common
Op amp input pin
for regulating the
driving voltage of
the LCD
Input pin for the op
amp's feedback
connection
Op amp output
Dummy pin
Test input
Test output
Name
Name
166 to 192, 200 to 218,
350 to 368, 375 to 401
1 to 5, 109, 114, 119,
193 to 199, 219, 348,
349, 369 to 374, 402,
124, 129, 138, 141,
142, 159 to 165,
152, 153,
154, 155,
156, 157
150, 151
Pad No.
347-220
Pad No.
13, 14
11, 12
9, 10
7, 8
403
Data Sheet S15745EJ2V0DS
Output
Output
Output
Output
Input
Input
Input
I/O
I/O
−
These pins are used to set a test mode for the IC.
Segment output pins
Common output pins
V
the LCD. This is a reference voltage input for the LCD voltage
regulation amplifier.
When using the internal drive circuit (i.e., when OP1 = 1), we
recommend inserting a 0.1 to 1 µ F capacitor between this pin
and GND.
V
pin between GND and AMP
for this input.
This pin is valid only when not using an internal resistor for V
voltage regulation (i.e., when IRS = L). This pin cannot be used
when using the internal resistor for V
when IRS = H).
These are op amp output pins for regulating the driving voltage
of the LCD. When not using an internal resistor for V
regulation (i.e., when IRS = L), these outputs are connected to
the LCD drive voltage regulation resistor (see 5.6.2 Voltage
regulator).
We recommend inserting a 0.01 to 0.1 µ F capacitor between
these pins in order to stabilize the internal op amp's output.
Dummy pin.
These pins are not connected inside IC. Usually, leave these
pins open.
Normally, connect these pins to V
These pins are used when the IC is in test mode.
Usually, leave them open.
RS
R
is an input for the op amp's feedback connection. Insert this
is an op amp input pin for regulating the driving voltage of
Description
Description
OUT
when using the feedback resistor
SS
.
LCD
voltage regulation (i.e.,
µ µ µ µ PD16488A
LCD
voltage
LCD
13