pcf8536 NXP Semiconductors, pcf8536 Datasheet - Page 19

• 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
Fig 8.
visible flickering
Intensity of
Where f
Flicker avoidance for LED backlighting
8.1.11 Command: GPO-static-data
0
= f
PWM
When static GPOs are selected instead of PWM, then the value for the output is taken
from these register bits. The output is a static level.
Table 24.
[1]
and f
Bit
GPO0 to GPO2
7 to 3
2
1
0
GPO3 to GPO5
7 to 3
2
1
0
Default value.
1
f
= f
1
fr(LCD)
Symbol
-
GPO0
GPO1
GPO2
-
GPO3
GPO4
GPO5
GPO-static-data - write GPO data for GP0 to GP5 command bit description
and f
10 Hz of each other
visible when f
or f
Flickering is most
fr(LCD)
1
All information provided in this document is subject to legal disclaimers.
= f
Universal LCD low multiplex driver with 6 channel PWM generator
PWM
are within
PWM
and f
Rev. 1 — 6 October 2011
and f
Flickering will not be
visible when f
than 50 Hz apart
0
= f
fr(LCD)
fr(LCD)
Value
01100
0
1
0
1
0
1
01101
0
1
0
1
0
1
[1]
[1]
[1]
[1]
[1]
[1]
In general, the higher the PWM frame
frequency, the less flickering will be visible
are more
.
PWM
Flickering is also visible at multiples
of the fundamental frequency;
however, the visibility is lower
Description
fixed value
0 level output on pin GP2
1 level output on pin GP2
0 level output on pin GP1
1 level output on pin GP1
0 level output on pin GP0
1 level output on pin GP0
fixed value
0 level output on pin GP5
1 level output on pin GP5
0 level output on pin GP4
1 level output on pin GP4
0 level output on pin GP3
1 level output on pin GP3
This will repeat for 3
2f
1
PCF8536
© NXP B.V. 2011. All rights reserved.
f1
, 4
013aaa449
f1
, etc.
19 of 74
f
0