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PCF8536AT Datasheet(PDF) 73 Page - NXP Semiconductors

Part # PCF8536AT
Description  Universal LCD driver for low multiplex rates including a 6 channel PWM generator
PDF  74 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8536AT Datasheet(HTML) 73 Page - NXP Semiconductors

Back Button PCF8536AT Datasheet HTML 66Page - NXP Semiconductors PCF8536AT Datasheet HTML 67Page - NXP Semiconductors PCF8536AT Datasheet HTML 68Page - NXP Semiconductors PCF8536AT Datasheet HTML 69Page - NXP Semiconductors PCF8536AT Datasheet HTML 70Page - NXP Semiconductors PCF8536AT Datasheet HTML 71Page - NXP Semiconductors PCF8536AT Datasheet HTML 72Page - NXP Semiconductors PCF8536AT Datasheet HTML 73Page - NXP Semiconductors PCF8536AT Datasheet HTML 74Page - NXP Semiconductors  
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PCF8536
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 2 — 21 February 2012
73 of 74
continued >>
NXP Semiconductors
PCF8536
Universal LCD low multiplex driver with 6 channel PWM generator
24. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1
2
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
3
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
5
Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
6
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
7
Pinning information . . . . . . . . . . . . . . . . . . . . . . 5
7.1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 6
8
Functional description . . . . . . . . . . . . . . . . . . . 7
8.1
Commands of PCF8536 . . . . . . . . . . . . . . . . . . 7
8.1.1
Command: initialize . . . . . . . . . . . . . . . . . . . . . 7
8.1.2
Command: OTP-refresh . . . . . . . . . . . . . . . . . . 8
8.1.3
Command: PWM-inversion. . . . . . . . . . . . . . . . 8
8.1.4
Command: mode-settings . . . . . . . . . . . . . . . . 9
8.1.4.1
Backplane swapping. . . . . . . . . . . . . . . . . . . . . 9
8.1.4.2
Line inversion (driving scheme A) and frame
inversion (driving scheme B) . . . . . . . . . . . . . 10
8.1.4.3
Power-down mode . . . . . . . . . . . . . . . . . . . . . 10
8.1.4.4
Display enable . . . . . . . . . . . . . . . . . . . . . . . . 12
8.1.5
Command: oscillator-control . . . . . . . . . . . . . 12
8.1.5.1
Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8.1.5.2
Timing and frame frequency . . . . . . . . . . . . . . 15
8.1.6
Command: GPO-output-config . . . . . . . . . . . . 15
8.1.7
Command: set-MUX-mode . . . . . . . . . . . . . . . 16
8.1.8
Command: set-bias-mode . . . . . . . . . . . . . . . 16
8.1.9
Command: frame-frequency-LCD. . . . . . . . . . 16
8.1.10
Command: frame-frequency-PWM . . . . . . . . . 18
8.1.11
Command: GPO-static-data . . . . . . . . . . . . . . 19
8.1.12
Command: load-data-pointer-LCD . . . . . . . . . 20
8.1.13
Command: load-data-pointer-PWM . . . . . . . . 20
8.1.14
Command: write-RAM-data . . . . . . . . . . . . . . 20
8.1.15
Command: write-PWM-data . . . . . . . . . . . . . . 21
8.2
Start-up and shut-down. . . . . . . . . . . . . . . . . . 21
8.2.1
Reset and Power-On Reset (POR). . . . . . . . . 21
8.2.2
RESET pin function . . . . . . . . . . . . . . . . . . . . 22
8.2.3
Recommended start-up sequences . . . . . . . . 22
8.3
Possible display configurations . . . . . . . . . . . 25
8.4
LCD voltage selector . . . . . . . . . . . . . . . . . . . 26
8.4.1
Electro-optical performance . . . . . . . . . . . . . . 28
8.5
LCD drive mode waveforms . . . . . . . . . . . . . . 29
8.5.1
1:4 Multiplex drive mode. . . . . . . . . . . . . . . . . 29
8.5.2
1:6 Multiplex drive mode. . . . . . . . . . . . . . . . . 30
8.5.3
1:8 Multiplex drive mode. . . . . . . . . . . . . . . . . 32
8.6
Display register . . . . . . . . . . . . . . . . . . . . . . . . 34
8.7
Backplane outputs . . . . . . . . . . . . . . . . . . . . . 34
8.8
Segment outputs. . . . . . . . . . . . . . . . . . . . . . . 34
8.9
Display RAM . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.9.1
Data pointer (LCD part) . . . . . . . . . . . . . . . . . 36
8.9.2
RAM filling in 1:4 multiplex drive mode . . . . . 37
8.9.3
RAM filling in 1:6 multiplex drive mode . . . . . 38
8.9.4
RAM filling in 1:8 multiplex drive mode . . . . . 40
8.10
PWM registers and data pointer (PWM part) . 40
8.11
GPO output . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.11.1
RGB color driving. . . . . . . . . . . . . . . . . . . . . . 43
8.11.2
PWM inversion mode. . . . . . . . . . . . . . . . . . . 45
9
Bus interfaces . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.1
Control byte and register selection . . . . . . . . 46
9.2
I2C-bus interface . . . . . . . . . . . . . . . . . . . . . . 46
9.2.1
Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.2.2
START and STOP conditions. . . . . . . . . . . . . 47
9.2.3
System configuration . . . . . . . . . . . . . . . . . . . 47
9.2.4
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 48
9.2.5
I2C-bus controller . . . . . . . . . . . . . . . . . . . . . . 48
9.2.6
Input filters . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
9.2.7
I2C-bus slave address . . . . . . . . . . . . . . . . . . 49
9.2.8
I2C-bus protocol . . . . . . . . . . . . . . . . . . . . . . . 49
9.2.8.1
Status read out . . . . . . . . . . . . . . . . . . . . . . . . 50
9.3
SPI-bus interface . . . . . . . . . . . . . . . . . . . . . . 51
9.3.1
Data transmission . . . . . . . . . . . . . . . . . . . . . 51
10
Internal circuitry . . . . . . . . . . . . . . . . . . . . . . . 53
11
Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 54
12
Static characteristics . . . . . . . . . . . . . . . . . . . 55
13
Dynamic characteristics. . . . . . . . . . . . . . . . . 59
14
Package outline. . . . . . . . . . . . . . . . . . . . . . . . 63
15
Handling information . . . . . . . . . . . . . . . . . . . 64
16
Soldering of SMD packages . . . . . . . . . . . . . . 64
16.1
Introduction to soldering. . . . . . . . . . . . . . . . . 64
16.2
Wave and reflow soldering. . . . . . . . . . . . . . . 64
16.3
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 65
16.4
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . 65
17
Footprint information for reflow soldering . . 66
18
Appendix: possible PWM and LCD frame
frequency combinations to avoid flicker . . . 68
19
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 69
20
References. . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
21
Revision history . . . . . . . . . . . . . . . . . . . . . . . 70
22
Legal information . . . . . . . . . . . . . . . . . . . . . . 71
22.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 71
22.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
22.3
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 71
22.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 72



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