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PCF8576DT/2 датащи(PDF) 37 Page - NXP Semiconductors

номер детали PCF8576DT/2
подробное описание детали  Universal LCD driver for low multiplex rates
PDF  57 Pages
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8576DT/2 датащи(HTML) 37 Page - NXP Semiconductors

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PCF8576D
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 14 — 10 June 2013
37 of 57
NXP Semiconductors
PCF8576D
Universal LCD driver for low multiplex rates
The contact resistance between the SYNC on each cascaded device must be controlled.
If the resistance is too high, the device is not able to synchronize properly; this is
particularly applicable to chip-on-glass applications. The maximum SYNC contact
resistance allowed for the number of devices in cascade is given in Table 22.
The PCF8576D can be cascaded with the PCF8562. This allows optimal drive selection
for a given number of pixels to display. Figure 21 and Figure 22 show the timing of the
synchronization signals.
Table 22.
SYNC contact resistance
Number of devices
Maximum contact resistance
26 k
3 to 5
2.2 k
6 to 10
1.2 k
10 to 16
700
Fig 23. Cascaded PCF8576D configuration
HOST
MICRO-
PROCESSOR/
MICRO-
CONTROLLER
SDA
SCL
CLK
OSC
SYNC
1, 58, 59
2, 3
4
5
7
89
6
8
9
10
11
12
13
10
11
12
40 segment drives
4 backplanes
40 segment drives
LCD PANEL
(up to 2560
elements)
PCF8576DU
A0
A1
A2
SA0
VDD
VLCD
DD
V
LCD
V
mdb077
SDA
SCL
SYNC
CLK
OSC
1, 58, 59
613
2, 3
4
5
7
BP0 to BP3
(open-circuit)
A0
A1
A2
SA0 VSS
VSS
VSS
VDD
VLCD
PCF8576DU
BP0 to BP3
R
tr
2CB
≤



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