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PDF PCF8566 Data sheet ( Hoja de datos )
| Número de pieza | PCF8566 | |
| Descripción | Universal LCD driver for low multiplex rates | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
PCF8566
Universal LCD driver for low
multiplex rates
Product specification
Supersedes data of 1997 Apr 02
File under Integrated Circuits, IC12
1998 May 04
1 page  
Philips Semiconductors
Universal LCD driver for low multiplex
rates
Product specification
PCF8566
5 PINNING
SYMBOL PIN
DESCRIPTION
SDA
1 I2C-bus data input/output
SCL
2 I2C-bus clock input/output
SYNC
3 cascade synchronization
input/output
CLK 4 external clock input/output
VDD
OSC
5 positive supply voltage
6 oscillator input
A0 7
A1 8 I2C-bus subaddress inputs
A2 9
SA0 10 I2C-bus slave address bit 0 input
VSS
VLCD
BP0
11 logic ground
12 LCD supply voltage
13
BP2 14
LCD backplane outputs
BP1 15
BP3 16
S0 to S23 17 to 40 LCD segment outputs
handbook, halfpage
SDA 1
40 S23
SCL 2
39 S22
SYNC 3
38 S21
CLK 4
37 S20
VDD 5
OSC 6
36 S19
35 S18
A0 7
34 S17
A1 8
33 S16
A2 9
32 S15
SA0 10
31 S14
VSS 11 PCF8566 30 S13
VLCD 12
29 S12
BP0 13
28 S11
BP2 14
27 S10
BP1 15
26 S9
BP3 16
25 S8
S0 17
24 S7
S1 18
23 S6
S2 19
22 S5
S3 20
21 S4
MGG382
Fig.2 Pin configuration.
1998 May 04
5
5 Page 
Philips Semiconductors
Universal LCD driver for low multiplex
rates
Product specification
PCF8566
handbook, full pagewidth
BP0
BP1
BP2
Sn
Sn + 1
Sn + 2
VDD
VDD − Vop/3
VDD − 2Vop/3
VLCD
VDD
VDD − Vop/3
VDD − 2Vop/3
VLCD
VDD
VDD − Vop/3
VDD − 2Vop/3
VLCD
VDD
VDD − Vop/3
VDD − 2Vop/3
VLCD
VDD
VDD − Vop/3
VDD − 2Vop/3
VLCD
VDD
VDD − Vop/3
VDD − 2Vop/3
VLCD
state 1
Vop
2Vop/3
Vop/3
0
−Vop/3
−2Vop/3
−Vop
state 2
Vop
2Vop/3
Vop/3
0
−Vop/3
−2Vop/3
−Vop
Tframe
LCD segments
state 1
state 2
(a) waveforms at driver
(b) resultant waveforms
at LCD segment
At any instant (t):
Vstate 1(t) = VSn(t) − VBP0(t)
Von(rms) = Vop√33 = 0.638Vop
9
Vstate 2(t) = VSn(t) − VBP1(t)
Voff(rms) = Vop = 0.333Vop
3
MGG395
1998 May 04
Fig.7 Waveforms for 1 : 3 multiplex drive mode: Vop = VDD − VLCD.
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet PCF8566.PDF ] | |
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