INTEGRATED CIRCUITS
DATA SHEET
PCF8812
65
×
102 pixels matrix LCD driver
Product specification
Supersedes data of 2000 Nov 22
2004 Feb 23
Philips Semiconductors
Product specification
65
×
102 pixels matrix LCD driver
CONTENTS
1
2
3
4
5
6
7
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.1.5
7.1.6
7.1.7
7.1.8
7.1.9
7.1.10
7.1.11
7.1.12
7.1.13
7.1.14
8
8.1
8.2
8.3
8.4
8.5
8.6
9
9.1
10
10.1
10.2
10.3
10.3.1
10.3.2
10.3.3
10.4
10.4.1
FEATURES
APPLICATIONS
GENERAL DESCRIPTION
ORDERING INFORMATION
BLOCK DIAGRAM
PINNING
PIN FUNCTIONS
Pin functions
ROW 0 to ROW 64 row driver outputs
COL 0 to COL 101 column driver outputs
V
SS1
and V
SS2
: negative power supply rails
V
DD1
to V
DD3
: positive power supply rails
V
LCDIN
: LCD power supply
V
LCDOUT
: LCD power supply
V
LCDSENSE
: voltage multiplier regulation input
(V
LCD
)
TEST1 to TEST5: test pads
SDIN: serial data line
SCLK: serial clock line
D/C: mode select
SCE: chip enable
OSC: oscillator
RES: reset
FUNCTIONAL DESCRIPTION
Oscillator
Address Counter (AC)
Display Data RAM (DDRAM)
Timing generator
Display address counter
LCD row and column drivers
ADDRESSING
Data structure
INSTRUCTIONS
Initialization
Reset function
Function set
Bit PD
Bit V
Bit H
Display control
Bits D and E
10.5
10.6
10.7
10.8
10.9
10.10
11
12
13
14
15
16
16.1
16.2
17
17.1
18
19
20
21
Set Y address of RAM
Set X address of RAM
Set HV-generator stages
Bias system
Temperature control
Set V
OP
value
LIMITING VALUES
HANDLING
DC CHARACTERISTICS
AC CHARACTERISTICS
PCF8812
APPLICATION INFORMATION
BONDING PAD INFORMATION
PCF8812U/2DA/2
PCF8812/2/F1
TRAY INFORMATION
Tray dimensions
DEVICE PROTECTION DIAGRAM
DATA SHEET STATUS
DEFINITIONS
DISCLAIMERS
2004 Feb 23
2
Philips Semiconductors
Product specification
65
×
102 pixels matrix LCD driver
1
FEATURES
2
APPLICATIONS
PCF8812
•
65 row and 102 column outputs
•
Display data RAM 65
×
102 bits
•
On-chip:
– Configurable 5 (4, 3 and 2) voltage multiplier
generating V
LCD
(external V
LCD
also possible)
– Generation of intermediate LCD bias voltages
– Oscillator requires no external components
(external clock also possible).
•
External reset input pin
•
Serial interface maximum 4 Mbit/s
•
CMOS compatible inputs
•
Mux rate: 1 : 65
•
Logic supply voltage range V
DD1
to V
SS
:
– 2.5 V to 5.5 V.
•
High voltage generator supply voltage range
V
DD2
to V
SS
and V
DD3
to V
SS
– 2.5 to 4.5 V.
•
Display supply voltage range V
LCD
to V
SS
:
– 4.5 to 9.0 V.
•
Low power consumption, suitable for battery operated
systems
•
Temperature compensation of V
LCD
•
Temperature range: T
amb
=
−40 °C
to +85
°C
•
Slim chip layout, suited for Chip-On-Glass (COG)
applications.
4
ORDERING INFORMATION
•
Telecom equipment.
3
GENERAL DESCRIPTION
The PCF8812 is a low power CMOS LCD controller driver,
designed to drive a graphic display of 65 rows and
102 columns. All necessary functions for the display are
provided in a single chip, including on-chip generation of
LCD supply and bias voltages, resulting in a minimum of
external components and low power consumption. The
PCF8812 interfaces to microcontrollers via a serial bus
interface.
PACKAGE
TYPE NUMBER
NAME
PCF8812U/2DA/2
PCF8812U/2/F1
tray
tray
chip with bumps in tray
chip with bumps in tray
DESCRIPTION
VERSION
−
−
2004 Feb 23
3
Philips Semiconductors
Product specification
65
×
102 pixels matrix LCD driver
5
BLOCK DIAGRAM
V
DD1
174 to 179
V
DD2
181 to 193
V
DD3
180
102
PCF8812
COL0 to COL101
37 to 138
ROW0 to ROW64
2 to 15, 18 to 36,
139 to 156,
65
159 to 172
ROW DRIVERS
COLUMN DRIVERS
V
LCDIN
224 to 229
BIAS
VOLTAGE
GENERATOR
DATA LATCHES
237
230 to 236
214 to 217,
221, 222
200 to 213
218
198
223
220
219
DATA
REGISTER
ADDRESS COUNTER
HIGH
VOLTAGE
GENERATOR
4 stages
SHIFT REGISTER
VLCDSENSE
V
LCDOUT
V
SS1
V
SS2
T1
T2
T3
T4
T5
RESET
DISPLAY DATA RAM
(DDRAM)
65
×
102 bits
1
RES
OSCILLATOR
194
OSC
TIMING
GENERATOR
DISPLAY
ADDRESS
COUNTER
PCF8812
I/O BUFFER
195
SDIN
199
SCLK
196
D/C
197
SCE
16
17
157
158
173
mgt636
n.c.
Fig.1 Block diagram.
2004 Feb 23
4
Philips Semiconductors
Product specification
65
×
102 pixels matrix LCD driver
6
PINNING
SYMBOL
RES
ROW32 to
ROW19
ROW0 to
ROW18
COL0 to
COL101
ROW50 to
ROW33
ROW51 to
ROW64
V
DD1
V
DD3
V
DD2
OSC
SDIN
D/C
SCE
TEST2
SCLK
V
SS2
V
SS1
TEST1
TEST5
TEST4
V
SS1
TEST3
V
LCDIN
V
LCDOUT
VLCDSENSE
n.c.
PAD
1
2 to 15
18 to 36
37 to 138
139 to 156
159 to 172
174 to 179
180
181 to 193
194
195
196
197
198
199
200 to 213
214 to 217
218
219
220
DESCRIPTION
external reset input
(active LOW)
LCD row driver outputs
7.1.2
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
7.1.5
V
LCDIN
: LCD
POWER SUPPLY
7
7.1
7.1.1
PIN FUNCTIONS
Pin functions
PCF8812
ROW 0
TO
ROW 64
ROW DRIVER OUTPUTS
These pads output the row signals.
COL 0
TO
COL 101
COLUMN DRIVER OUTPUTS
These pads output the column signals.
7.1.3
V
SS1
AND
V
SS2
:
NEGATIVE POWER SUPPLY RAILS
Supply rails V
SS1
and V
SS2
must be connected together.
7.1.4
V
DD1
TO
V
DD3
:
POSITIVE POWER SUPPLY RAILS
V
DD2
and V
DD3
are the supply voltage for the internal
voltage generator. Both have the same voltage and may
be connected together outside of the chip. V
DD1
is used as
supply for the rest of the chip. V
DD1
can be connected
together with V
DD2
and V
DD3
but in this case care must be
taken to respect the supply voltage range
(see Chapter 13).
If the internal voltage generator is not used then V
DD2
and
V
DD3
must be connected to V
DD1
or connected to power.
Positive power supply for the liquid crystal display.
An external LCD supply voltage can be supplied using the
V
LCDIN
pad. In this case V
LCDOUT
has to be left open-circuit
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
V
LCDOUT
: LCD
POWER SUPPLY
221 and 222 negative power supply
voltage 1
223
224 to 229
230 to 236
237
test 3 input and output
LCD supply voltage input
LCD supply internal
voltage multiplier output
voltage multiplier
regulation input
Positive power supply for the liquid crystal display. If the
internal voltage generator is used, the two supply rails
V
LCDIN
and V
LCDOUT
must be connected together. If an
external supply is used this pin must be left open-circuit.
7.1.7
V
LCDSENSE
:
VOLTAGE MULTIPLIER REGULATION
INPUT
(V
LCD
)
V
LCDSENSE
is the input of the internal voltage multiplier
regulation.
If the internal voltage generator is used then V
LCDSENSE
must be connected to V
LCDOUT
. If a external supply voltage
is used then the V
LCDSENSE
can be let open-circuit or
connected to ground.
16, 17, 157, not connected
158 and 173
2004 Feb 23
5
PCB设计
