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PDF PCF8579H Data sheet ( Hoja de datos )
| Número de pieza | PCF8579H | |
| Descripción | LCD column driver for dot matrix graphic displays | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
PCF8579
LCD column driver for dot matrix
graphic displays
Product specification
Supersedes data of 1996 Oct 25
File under Integrated Circuits, IC12
1997 Apr 01
1 page  
Philips Semiconductors
LCD column driver for dot matrix graphic
displays
Product specification
PCF8579
6 PINNING
SYMBOL
SDA
SCL
SYNC
CLK
VSS
TEST
SA0
A3 to A0
VDD
n.c.
V3, V4
VLCD
C39 to C0
VSO56
1
2
3
4
5
6
7
8 to 11
12
13(1)
14 and 15
16
17 to 56
Note
1. Do not connect, this pin is reserved.
PINS
LQFP64
7
8
9
10
11
12
13
14, 16 to 18
20
15, 19, 21,25 to 29, 34
22 and 23
24
30 to 33, 35 to 64 and 1 to 6
DESCRIPTION
I2C-bus serial data input/output
I2C-bus serial clock input
cascade synchronization input
external clock input
ground (logic)
test pin (connect to VSS)
I2C-bus slave address input (bit 0)
I2C-bus subaddress inputs
supply voltage
not connected
LCD bias voltage inputs
LCD supply voltage
LCD column driver outputs
1997 Apr 01
5
5 Page 
Philips Semiconductors
LCD column driver for dot matrix graphic
displays
Product specification
PCF8579
ROW 1
R1 (t)
VDD
V2
V3
V4
V5
V LCD
ROW 2
R2 (t)
VDD
V2
V3
V4
V5
V LCD
COL 1
C1 (t)
VDD
V2
V3
V4
V5
V LCD
COL 2
C2 (t)
VDD
V2
V3
V4
V5
V LCD
V op
V state 1 (t)
0.2 Vop
0V
0.2 Vop
V op
V state 2 (t)
V op
0.6 Vop
0.2 Vop
0V
0.2 Vop
0.6 Vop
V op
T frame
state 1 (OFF)
state 2 (ON)
dot matrix
1:16 multiplex rate
MSA836
Vstate 1 (t) = C1(t) R1(t):
Von(rms) =
Vop
1
16
16
16 1
( 16 1)
=
0.316
Vstate 2 (t) = C2(t) R2(t):
Voff(rms) =
Vop
2(
16
16 1)
( 16 1) 2
=
0.254
general relationship (n = multiplex rate)
Von(rms) =
Vop
1 n1
n n ( n 1)
Voff(rms)
Vop
=
2( n 1)
n ( n 1)2
Fig.7 LCD drive mode waveforms for 1 : 16 multiplex rate.sa.
1997 Apr 01
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet PCF8579H.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
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| PCF8579T | LCD column driver for dot matrix graphic displays | NXP Semiconductors |
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