PCF8579 데이터 시트보기 (PDF) - Philips Electronics
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PCF8579 Datasheet PDF : 40 Pages
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Philips Semiconductors
LCD column driver for dot matrix graphic
displays
5 BLOCK DIAGRAM
Product specification
PCF8579
VDD
V3
V4
VLCD
12 (20)
14 (22)
15 (23)
16 (24)
TEST
VSS
6 (12)
5 (11)
POWER-ON
RESET
8 (14)
A3
A2
9 (16)
10 (17)
A1
11 (18)
A0
C39 - C0
17 - 56
(30 to 33, 35 to 64, 1 to 6)
COLUMN (1)
DRIVERS
PCF8579
OUTPUT
CONTROLLER
Y DECODER
AND SENSING
AMPLIFIERS
32 x 40 BIT
DISPLAY RAM
DISPLAY
DECODER
X DECODER
SUBADDRESS
COUNTER
RAM DATA POINTER
Y
X
(9) 3
TIMING
GENERATOR (10) 4
SYNC
CLK
SCL
SDA
2 (8)
1 (7)
INPUT
FILTERS
I2C-BUS
CONTROLLER
(15, 19, 21, 25 to 29, 34)
13
n.c.
7 (13)
SA0
COMMAND
DECODER
MSA919
(1) Operates at LCD voltage levels, all other blocks operate at logic levels.
The pin numbers given in parenthesis refer to the LQFP64 package.
Fig.1 Block diagram.
1997 Apr 01
4
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