pcf8536 NXP Semiconductors, pcf8536 Datasheet - Page 16

• 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
8.1.7 Command: set-MUX-mode
8.1.8 Command: set-bias-mode
8.1.9 Command: frame-frequency-LCD
Table 17.
[1]
The multiplex drive mode is configured with the bits described in
Table 18.
[1]
The set-bias-mode command allows setting the bias level.
Table 19.
[1]
With the frame-frequency-LCD command, the frame frequency for the display can be
configured. The clock frequency determines the frame frequency.
Table 20.
The system is designed for a 230 kHz clock. It is either internally generated or externally
provided. Alternatively a 9.6 kHz clock signal can be provided as well. The EFR bit (see
Table
When EFR is set to 9.6 kHz, then the LCD frame frequency is calculated with
f
GPM0[1:0] to GPM5[1:0]
00
Bit
7 to 2
1 to 0
Bit
7 to 2
1 to 0
Bit
7 to 5
4 to 0
10
11
fr LCD

[1]
Default value.
Default value.
Default value.
, 01
10) has to be set according to the external clock frequency.

=
Symbol
-
M[1:0]
Symbol
-
B[1:0]
Symbol
-
FD[4:0]
GPMO mode definition
Set-MUX-mode - set multiplex drive mode command bit description
Set-bias-mode - set bias mode command bit description
Frame-frequency-LCD - frame frequency and output clock frequency command
bit description
f
---------------- -
clk ext
48

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
Mode
LCD
static
PWM
Value
000000
00
10
11
Value
000001
00
11
10
Value
001
see
[1]
[1]
, 01
. 01
Table 21
Description
output is an LCD segment
output is static GPO
output is PWM GPO
Description
fixed value
1:8 multiplex drive mode; eight backplanes
1:6 multiplex drive mode; 6 backplanes
1:4 multiplex drive mode; 4 backplanes
Description
fixed value
1
1
1
Description
fixed value
frequency prescaler
⁄
⁄
⁄
4
3
2
bias
bias
bias
Table
PCF8536
18.
© NXP B.V. 2011. All rights reserved.
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