pcf8548 NXP Semiconductors, pcf8548 Datasheet - Page 4

• Manufacturer Part Number: pcf8548
• Description: 65 X 102 Pixels Matrix Lcd Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
5
6
1999 Aug 16
handbook, full pagewidth
RES
SDAOUT
SDAIN
SCL
T2
SA0
T7 to T5
T4 and T3
T1
V
V
V
V
SYMBOL
SS1
SS2
LCDOUT
LCDSENSE
65
BLOCK DIAGRAM
PINNING
102 pixels matrix LCD driver
V LCDSENSE
12 and 13
V LCDOUT
15 to 20
21 to 26
28 to 33
3 and 4
5 and 6
9 to 11
V LCDIN
PAD
14
34
V SS1
V SS2
1
2
7
8
RES
SDAOUT SDAIN SCL
external reset input (active
LOW)
I
I
I
test 2 output
least significant bit of slave
address
test inputs
test input/output
test input
negative power supply 1
negative power supply 2
voltage multiplier output
voltage multiplier
regulation input (V
2
2
2
V DD1
C-bus data output
C-bus data input
C-bus clock input
GENERATOR
GENERATOR
4 STAGES
VOLTAGE
VOLTAGE
PCF8548
HIGH
BIAS
DESCRIPTION
V DD2
INTERFACE
I
2
C-BUS
V DD3
LCD
SA0
Fig.1 Block diagram.
)
T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12
DISPLAY DATA RAM
COLUMN DRIVERS
DATA LATCHES
65
C0 to C101
4
102 BITS
V
R32 to R19
R0 to R18
C0 to C101
R50 to R33
R51 to R64
T12 to T9
OSC
T8
V
V
V
SYMBOL
102
LCDIN
DD1
DD3
DD2
DISPLAY CONTROL LOGIC
196 and 197
178 to 195
198 to 211
212 to 215
218 to 223
224 to 226
227 to 233
27, 55, 56,
76 to 177
SHIFT REGISTER
35 to 40
41 to 54
57 to 75
ROW DRIVERS
OSCILLATOR
GENERATOR
PAD
216
217
R0 to R64
TIMING
65
LCD supply voltage
LCD row driver outputs
LCD row driver outputs
LCD column driver outputs
LCD row driver outputs
LCD row driver outputs
test outputs
oscillator
test input
supply voltage 1
supply voltage 3
supply voltage 2
dummy pads
DESCRIPTION
Product specification
MGS393
OSC
PCF8548