pcf8812 NXP Semiconductors, pcf8812 Datasheet - Page 5

• Manufacturer Part Number: pcf8812
• Description: 65 X 102 Pixels Matrix Lcd Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
6
2004 Feb 23
RES
ROW32 to
ROW19
ROW0 to
ROW18
COL0 to
COL101
ROW50 to
ROW33
ROW51 to
ROW64
V
V
V
OSC
SDIN
D/C
SCE
TEST2
SCLK
V
V
TEST1
TEST5
TEST4
V
TEST3
V
V
VLCDSENSE
n.c.
DD1
DD3
DD2
SS2
SS1
SS1
LCDIN
LCDOUT
65
SYMBOL
PINNING
102 pixels matrix LCD driver
221 and 222 negative power supply
158 and 173
16, 17, 157,
139 to 156
159 to 172
174 to 179
181 to 193
200 to 213
214 to 217
224 to 229
230 to 236
37 to 138
18 to 36
2 to 15
PAD
180
194
195
196
197
198
199
218
219
220
223
237
1
external reset input
(active LOW)
LCD row driver outputs
LCD row driver outputs
LCD column driver
outputs
LCD row driver outputs
LCD row driver outputs
logic supply voltage
internal voltage
generator supply voltage
internal voltage
generator supply voltage
oscillator input
serial data input
data or command input
chip enable input
(active LOW)
test 2 output
serial clock input
negative power supply
voltage 2
negative power supply
voltage 1
test 1 input
test 5 input
test 4 input
voltage 1
test 3 input and output
LCD supply voltage input
LCD supply internal
voltage multiplier output
voltage multiplier
regulation input
not connected
DESCRIPTION
5
7
7.1
7.1.1
These pads output the row signals.
7.1.2
These pads output the column signals.
7.1.3
Supply rails V
7.1.4
V
voltage generator. Both have the same voltage and may
be connected together outside of the chip. V
supply for the rest of the chip. V
together with V
taken to respect the supply voltage range
(see Chapter 13).
If the internal voltage generator is not used then V
V
7.1.5
Positive power supply for the liquid crystal display.
An external LCD supply voltage can be supplied using the
V
and the internal voltage generator has to be programmed
to zero. If the PCF8812 is in Power-down mode, the
external LCD supply voltage has to be switched off.
7.1.6
Positive power supply for the liquid crystal display. If the
internal voltage generator is used, the two supply rails
V
external supply is used this pin must be left open-circuit.
7.1.7
V
regulation.
If the internal voltage generator is used then V
must be connected to V
is used then the V
connected to ground.
DD2
DD3
LCDIN
LCDIN
LCDSENSE
PIN FUNCTIONS
and V
must be connected to V
Pin functions
pad. In this case V
and V
ROW 0
COL 0
V
V
V
V
V
INPUT
SS1
DD1
LCDIN
LCDOUT
LCDSENSE
is the input of the internal voltage multiplier
DD3
LCDOUT
SS1
AND
TO
DD2
(V
are the supply voltage for the internal
: LCD
TO
TO
LCD
: LCD
and V
V
LCDSENSE
V
and V
DD3
COL 101
:
ROW 64
SS2
must be connected together. If an
)
VOLTAGE MULTIPLIER REGULATION
POWER SUPPLY
:
LCDOUT
:
SS2
POSITIVE POWER SUPPLY RAILS
POWER SUPPLY
NEGATIVE POWER SUPPLY RAILS
DD3
LCDOUT
must be connected together.
can be let open-circuit or
but in this case care must be
COLUMN DRIVER OUTPUTS
ROW DRIVER OUTPUTS
DD1
. If a external supply voltage
DD1
has to be left open-circuit
or connected to power.
can be connected
Product specification
PCF8812
DD1
LCDSENSE
is used as
DD2
and