pcf8532 NXP Semiconductors, pcf8532 Datasheet - Page 33

• Manufacturer Part Number: pcf8532
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF8532_1
Product data sheet
Alternatively the schematic can be also constructed such that all the devices have OSC
pin connected to V
connected to the same external CLK).
A configuration where SYNC is connected but all PCF8532 are using the internal clock
(OSC pin tied to V
Table 19.
Number of devices
2
3 to 5
6 to 8
Fig 21. Cascaded configuration with two PCF8532’s using the internal clock of the
V
V
V
SS
DD
CONTROLLER
PROCESSOR/
LCD
(1) Is master (OSC connected to V
(2) Is slave (OSC connected to V
MICRO-
MICRO-
HOST
master
SYNC contact resistance
R
2C
t
r
B
SS
DD
) is not recommended and may lead to display artefacts!
and thus an external CLK being provided for the system (all devices
Rev. 1 — 10 February 2009
DD
SYNC
SS
).
OSC
SYNC
SDA
CLK
SCL
SDAACK
SDAACK
).
SDA
SCL
CLK
OSC
A0
Universal LCD driver for low multiplex rates
A0
PCF8532
A1
Maximum contact resistance
6000
2200
1200
PCF8532
V DD
V
A1 SA0
(1)
DD
SA0
(2)
V LCD
V
LCD
V
SS
V
160 segment drives
SS
4 backplanes
BP0 to BP3
segment drives
160/80/40
BP0 to BP3
(open-circuit)
PCF8532
© NXP B.V. 2009. All rights reserved.
LCD PANEL
(up to 2560
elements)
001aah855
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