PCF8820U Philips Semiconductors, PCF8820U Datasheet - Page 4

• Manufacturer Part Number: PCF8820U
• Description: 67 x 101 Grey-scale/ECB colour dot matrix LCD driver
• Manufacturer: Philips Semiconductors

Philips Semiconductors
5
2000 Dec 07
handbook, full pagewidth
67 101 Grey-scale/ECB colour dot matrix
LCD driver
BLOCK DIAGRAM
V LCDSENSE
V LCDOUT
SDA_OUT
V LCDIN
SDA_IN
V DD1
V DD2
V DD3
V SS1
V SS2
RES
SCL
T1
T2
T3
T4
T5
T6
179 to 184
188 to 194
185 to 187
198 to 203
206 to 211
195, 196
219
166 to 171
172
173 to 178
205
221
212
213
217
218
215, 216
197
TEMPERATURE
GENERATOR
V 5
VOLTAGE
GENERATOR
FILTERS
162
SENSOR
INPUT
VOLTAGE
HIGH
V 4
BIAS
163
V 3
164
Fig.1 Block diagram.
V 2
165
CONTROLLER
INTERFACE
SA0
I
2
204
DISPLAY DATA RAM
C-BUS
DATA LATCHES
4
C0 to C100
SA1
DRIVERS
COLUMN
DISPLAY
(DDRAM)
214
26 to 126
COMMAND
DECODER
R0 to R66
DRIVERS
ROW
3 to 25, 232 to 222,
148 to 127, 151 to 161
OSCILLATOR
GENERATOR
COUNTER
COUNTER
ADDRESS
ADDRESS
PCF8820
DISPLAY
TIMING
MGT114
220
Product specification
PCF8820
OSC