pcf8536 NXP Semiconductors, pcf8536 Datasheet - Page 11

• Manufacturer Part Number: pcf8536
• Description: Universal Lcd Driver For Low Multiplex Rates Including A 6 Channel Pwm Generator
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF8536
Product data sheet
Table 9.
With the following sequence, the PCF8536 can be set to a state of minimum power
consumption, called power-down mode.
Remarks:
Effect on function
backplane output
segment output
internal oscillator
OSCCLK pin
OSCCLK pin
GPO
GPO
Fig 6.
•
•
It is necessary to run the power-down sequence before removing the supplies.
Depending on the application, care must be taken that no other signals are present at
the chip input or output pins when removing the supplies (see
it may cause unwanted display artifacts. In case of an uncontrolled removal of supply
voltages, the PCF8536 will not be damaged.
Static voltages across the liquid crystal display can build up when the external LCD
supply voltage (V
cause unwanted display artifacts. To avoid such artifacts, V
applied or removed together.
Recommended power-down sequence
Effect of the power-down bit (PD)
All information provided in this document is subject to legal disclaimers.
Universal LCD low multiplex driver with 6 channel PWM generator
LCD
Mode settings
E = 1
E = 1
OSC = 0, COE = 1
OSC = 0, COE = 1
OSC = 1
static drive
PWM drive
Rev. 1 — 6 October 2011
) is on while the IC supply voltage is off, or vice versa. This may
Disable display
by setting bit E
Enable power-
External clock
removed now
down mode
with PD = 1
START
can be
logic 0
STOP
013aaa447
Effect of setting PD
0
normal function
normal function
on
output of internal
oscillator frequency
input clock
static drive
PWM drive
LCD
Section
and V
1
V
V
off
V
clock input, can be
logic 0, logic 1, or left
floating
static drive
static drive
SS
SS
DD
PCF8536
© NXP B.V. 2011. All rights reserved.
DD
10). Otherwise
must be
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