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PCF8549 Schematic ( PDF Datasheet ) - NXP Semiconductors

Teilenummer PCF8549
Beschreibung 65 x 102 pixels matrix LCD driver
Hersteller NXP Semiconductors
Logo NXP Semiconductors Logo 




Gesamt 36 Seiten
PCF8549 Datasheet, Funktion
INTEGRATED CIRCUITS
DATA SHEET
PCF8549
65 × 102 pixels matrix LCD driver
Product specification
File under Integrated Circuits, IC12
1997 Nov 21






PCF8549 Datasheet, Funktion
Philips Semiconductors
65 × 102 pixels matrix LCD driver
Product specification
PCF8549
ROW 0
R0 (t)
VLCD
V2
V3
V4
V5
VSS
ROW 2
R2 (t)
VLCD
V2
V3
V4
V5
VSS
COL 0
C0 (t)
VLCD
V2
V3
V4
V5
VSS
COL 1
C1 (t)
VLCD
V2
V3
V4
V5
VSS
VLCD
V3
VLCD - V2
0V
V3 - V2
VLCD
V3
VLCD - V2
0V
V3 - V2
frame n
frame n+1
0 2 4 6 8 10 ...
... 64 1 3 5 7 9 ...
... 63 0 2 4 6 8 10 ...
... 64 1 3 5 7 9 ...
Vstate1(t) = C1(t) - R0(t)
Vstate2(t) = C1(t) - R2(t)
Vstate1(t)
Vstate2(t)
V4 - V5
0V
V5
V4 - VLCD
- VLCD
V4 - V5
0V
V5
V4 - VLCD
- VLCD
... 63
VSS=0V
1997 Nov 21
Fig.2 Typical LCD driver waveforms.
6

6 Page









PCF8549 pdf, datenblatt
Philips Semiconductors
65 × 102 pixels matrix LCD driver
Product specification
PCF8549
SDA
SCL
data line
stable;
data valid
change
of data
allowed
Fig.9 Bit transfer.
MBC621
SDA
SDA
SCL
S
START condition
SCL
P
STOP condition
MBC622
Fig.10 Definition of start and stop conditions.
MASTER
TRANSMITTER/
RECEIVER
SDA
SCL
SLAVE
RECEIVER
SLAVE
TRANSMITTER/
RECEIVER
MASTER
TRANSMITTER
MASTER
TRANSMITTER/
RECEIVER
Fig.11 System configuration.
MGA807
1997 Nov 21
DATA OUTPUT
BY TRANSMITTER
DATA OUTPUT
BY RECEIVER
not acknowledge
acknowledge
SCL FROM
MASTER
S
START
CONDITION
1
2 89
MBC602
clock pulse for
acknowledgement
Fig.12 Acknowledgement on the I2C-bus.
12

12 Page





SeitenGesamt 36 Seiten
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