PCF8579 Philips Semiconductors, PCF8579 Datasheet - Page 4

• Manufacturer Part Number: PCF8579
• Description: LCD column driver for dot matrix graphic displays
• Manufacturer: Philips Semiconductors

Philips Semiconductors
5
1997 Apr 01
LCD column driver for dot matrix graphic
displays
(1) Operates at LCD voltage levels, all other blocks operate at logic levels.
The pin numbers given in parenthesis refer to the LQFP64 package.
BLOCK DIAGRAM
V
TEST
SDA
V DD
V SS
LCD
SCL
V 3
V 4
A3
A2
A1
A0
8 (14)
9 (16)
10 (17)
11 (18)
2 (8)
1 (7)
12 (20)
14 (22)
15 (23)
16 (24)
6 (12)
5 (11)
POWER-ON
RESET
n.c.
(15, 19, 21, 25 to 29, 34)
13
FILTERS
INPUT
SUBADDRESS
COUNTER
CONTROLLER
I C-BUS
2
SA0
AND SENSING
Y DECODER
AMPLIFIERS
7 (13)
Fig.1 Block diagram.
RAM DATA POINTER
Y
4
COMMAND
DECODER
DISPLAY RAM
CONTROLLER
X DECODER
DRIVERS
COLUMN
32 x 40 BIT
OUTPUT
C39 - C0
X
17 - 56
(30 to 33, 35 to 64, 1 to 6)
(1)
DECODER
DISPLAY
PCF8579
GENERATOR
TIMING
(10) 4
Product specification
MSA919
(9) 3
PCF8579
SYNC
CLK