pcf8536 NXP Semiconductors, pcf8536 Datasheet - Page 21

• 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
8.1.15 Command: write-PWM-data
8.2.1 Reset and Power-On Reset (POR)
8.2 Start-up and shut-down
This command will initiate the transfer of data to the PWM registers. Data will be written
into the address defined by the load-data-pointer-PWM command. PWM register filling is
described in
Table 28.
[1]
[2]
After a reset and at power-on the PCF8536 resets to starting conditions as follows:
The reset state is as shown in
Bit
7
6 to 0
1. The display is disabled.
2. All backplane outputs are set to V
3. All segment outputs are set to V
4. All GPO outputs are disabled.
5. Selected drive mode is: 1:8 with
6. The data pointers are cleared (set logic 0).
7. PWM values are all reset to zero.
8. RAM data is not initialized. Its content can be considered to be random.
9. The internal oscillator is running; no clock signal is available on pin OSCCLK; pin
For this command to be effective bit RS[1:0] of the control byte has to be set logic 10, see
page
Default value. After Power-On Reset (POR) the PWM content is set to 0.
OSCCLK is in 3-state.
Symbol
-
P[6:0]
46.
Write-PWM-data - write PWM data command bit description
Section 8.10
All information provided in this document is subject to legal disclaimers.
Universal LCD low multiplex driver with 6 channel PWM generator
Rev. 1 — 6 October 2011
Value
0
0000000
1111111
Table
SS
1
29.
⁄
SS
4
.
[2]
bias.
.
to
Description
fixed value
writing data byte-wise to PWM registers
[1]
PCF8536
© NXP B.V. 2011. All rights reserved.
Table 36 on
21 of 74