pcf8536 NXP Semiconductors, pcf8536 Datasheet - Page 20

• 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
8.1.12 Command: load-data-pointer-LCD
8.1.13 Command: load-data-pointer-PWM
8.1.14 Command: write-RAM-data
The load-data-pointer-LCD command defines the start address of the display RAM. The
data pointer is auto incremented after each RAM write. The size of the display RAM is
dependent on the current multiplex drive mode setting, see
Table 25.
[1]
Remark: Data pointer values outside of the valid range will be ignored and no RAM
content will be transferred until a valid data pointer value is set.
Filling of the display RAM is described in
The load-data-pointer-PWM command defines one of the 6 PWM addresses.
Table 26.
[1]
Remark: Data pointer values outside of the valid range will be ignored and no PWM
content will be transferred until a valid data pointer value is set.
This command will initiate the transfer of data to the display RAM. Data will be written into
the address defined by the load-data-pointer-LCD command. RAM filling is described in
Section
Table 27.
[1]
[2]
Bit
7 to 6
Multiplex drive mode 1:8
5 to 0
Multiplex drive mode 1:6
5 to 0
Multiplex drive mode 1:4
5 to 0
Bit
7 to 3
2 to 0
Bit
7 to 0
Default value.
Default value.
For this command to be effective bit RS[1:0] of the control byte has to be set logic 01, see
page
After Power-On Reset (POR), the RAM content is random and should be brought to a defined status by
writing meaningful content otherwise unexpected display content may appear.
8.9.
Symbol
-
DP[5:0]
DP[5:0]
DP[5:0]
Symbol
-
PP[2:0]
Symbol
D[7:0]
46.
Load-data-pointer-LCD - load data pointer command bit description
Load-data-pointer-PWM - load data pointer command bit description
Write-RAM-data - write RAM data command bit description
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
10
000000
100111
000000
101001
000000
101011
Value
01110
000
Value
00000000 to
11111111
[1]
to 101
[1]
[1]
[1]
[2]
to
to
to
Section
Description
fixed value
6-bit binary value of 0 to 39
6-bit binary value of 0 to 41
6-bit binary value of 0 to 43
Description
fixed value
3-bit binary value of 0 to 5
Description
writing data byte-wise to RAM
8.9.
Table
25.
[1]
PCF8536
© NXP B.V. 2011. All rights reserved.
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