PCF8576D All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 15 — 12 February 2015 58 of 59
NXP Semiconductors
PCF8576D
40 × 4 universal LCD driver for low multiplex rates
28. Figures
Fig 1. Block diagram of PCF8576D . . . . . . . . . . . . . . . . .3
Fig 2. Pinning diagram for PCF8576DT (TSSOP56) . . . .4
Fig 3. Pinning diagram for PCF8576DU (bare die) . . . . .5
Fig 4. Example of displays suitable for PCF8576D . . . . .7
Fig 5. Typical system configuration . . . . . . . . . . . . . . . . .8
Fig 6. Electro-optical characteristic: relative
transmission curve of the liquid . . . . . . . . . . . . . .11
Fig 7. Static drive mode waveforms. . . . . . . . . . . . . . . .12
Fig 8. Waveforms for the 1:2 multiplex drive mode
with
1
2
bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Fig 9. Waveforms for the 1:2 multiplex drive mode
with
1
3
bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Fig 10. Waveforms for the 1:3 multiplex drive mode
with
1
3
bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Fig 11. Waveforms for the 1:4 multiplex drive mode
with
1
3
bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Fig 12. Display RAM bit map . . . . . . . . . . . . . . . . . . . . . .18
Fig 13. Relationship between LCD layout, drive mode,
display RAM filling order and display data
transmitted over the I
2
C-bus . . . . . . . . . . . . . . . .19
Fig 14. Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Fig 15. Definition of START and STOP conditions. . . . . .26
Fig 16. System configuration . . . . . . . . . . . . . . . . . . . . . .27
Fig 17. Acknowledgement of the I
2
C-bus . . . . . . . . . . . .27
Fig 18. I
2
C-bus protocol. . . . . . . . . . . . . . . . . . . . . . . . . .29
Fig 19. Format of command byte. . . . . . . . . . . . . . . . . . .29
Fig 20. Device protection circuits. . . . . . . . . . . . . . . . . . .30
Fig 21. Driver timing waveforms . . . . . . . . . . . . . . . . . . .35
Fig 22. I
2
C-bus timing waveforms . . . . . . . . . . . . . . . . . .35
Fig 23. Cascaded PCF8576D configuration . . . . . . . . . .37
Fig 24. Synchronization of the cascade for the various
PCF8576D drive modes . . . . . . . . . . . . . . . . . . .38
Fig 25. Package outline SOT364-1 (TSSOP56) of
PCF8576DT. . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Fig 26. Bare die outline PCF8576DU/DA (for dimensions
see Table 23
) . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Fig 27. Bare die outline PCF8576DU/2DA (for dimensions
see Table 24) . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Fig 28. Tray details . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Fig 29. Tray alignment . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Fig 30. Temperature profiles for large and small
components . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
NXP Semiconductors
PCF8576D
40 × 4 universal LCD driver for low multiplex rates
© NXP Semiconductors N.V. 2015. All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 12 February 2015
Document identifier: PCF8576D
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
29. Contents
1 General description. . . . . . . . . . . . . . . . . . . . . . 1
2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 2
3.1 Ordering options. . . . . . . . . . . . . . . . . . . . . . . . 2
4 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
6 Pinning information. . . . . . . . . . . . . . . . . . . . . . 4
6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 6
7 Functional description . . . . . . . . . . . . . . . . . . . 7
7.1 Power-On Reset (POR) . . . . . . . . . . . . . . . . . . 8
7.2 LCD bias generator . . . . . . . . . . . . . . . . . . . . . 8
7.3 LCD voltage selector . . . . . . . . . . . . . . . . . . . . 8
7.3.1 Electro-optical performance . . . . . . . . . . . . . . 10
7.4 LCD drive mode waveforms . . . . . . . . . . . . . . 12
7.4.1 Static drive mode . . . . . . . . . . . . . . . . . . . . . . 12
7.4.2 1:2 Multiplex drive mode. . . . . . . . . . . . . . . . . 13
7.4.3 1:3 Multiplex drive mode. . . . . . . . . . . . . . . . . 15
7.4.4 1:4 Multiplex drive mode. . . . . . . . . . . . . . . . . 16
7.5 Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5.1 Internal clock . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5.2 External clock . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.6 Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.7 Display register. . . . . . . . . . . . . . . . . . . . . . . . 17
7.8 Segment outputs. . . . . . . . . . . . . . . . . . . . . . . 17
7.9 Backplane outputs . . . . . . . . . . . . . . . . . . . . . 17
7.10 Display RAM. . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.10.1 Data pointer . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.10.2 Subaddress counter . . . . . . . . . . . . . . . . . . . . 20
7.10.3 RAM writing in 1:3 multiplex drive mode. . . . . 21
7.10.4 Writing over the RAM address boundary . . . . 21
7.10.5 Output bank selector . . . . . . . . . . . . . . . . . . . 22
7.10.6 Input bank selector . . . . . . . . . . . . . . . . . . . . . 22
7.11 Blinking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.12 Command decoder . . . . . . . . . . . . . . . . . . . . . 23
7.13 Display controller . . . . . . . . . . . . . . . . . . . . . . 25
8 Characteristics of the I
2
C-bus . . . . . . . . . . . . 26
8.1 Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.2 START and STOP conditions . . . . . . . . . . . . . 26
8.3 System configuration . . . . . . . . . . . . . . . . . . . 26
8.4 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.5 I
2
C-bus controller . . . . . . . . . . . . . . . . . . . . . . 28
8.6 Input filters . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8.7 I
2
C-bus protocol . . . . . . . . . . . . . . . . . . . . . . . 28
9 Internal circuitry. . . . . . . . . . . . . . . . . . . . . . . . 30
10 Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
11 Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 32
12 Static characteristics . . . . . . . . . . . . . . . . . . . 33
13 Dynamic characteristics. . . . . . . . . . . . . . . . . 34
14 Application information . . . . . . . . . . . . . . . . . 35
14.1 Cascaded operation. . . . . . . . . . . . . . . . . . . . 35
15 Test information . . . . . . . . . . . . . . . . . . . . . . . 38
15.1 Quality information. . . . . . . . . . . . . . . . . . . . . 38
16 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 39
17 Bare die outline . . . . . . . . . . . . . . . . . . . . . . . . 40
18 Handling information . . . . . . . . . . . . . . . . . . . 44
19 Packing information . . . . . . . . . . . . . . . . . . . . 45
19.1 Tray information. . . . . . . . . . . . . . . . . . . . . . . 45
19.2 Tape and reel information . . . . . . . . . . . . . . . 46
20 Soldering of SMD packages. . . . . . . . . . . . . . 47
20.1 Introduction to soldering. . . . . . . . . . . . . . . . . 47
20.2 Wave and reflow soldering. . . . . . . . . . . . . . . 47
20.3 Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 47
20.4 Reflow soldering . . . . . . . . . . . . . . . . . . . . . . 48
21 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
21.1 LCD segment driver selection . . . . . . . . . . . . 50
22 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 52
23 References. . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
24 Revision history . . . . . . . . . . . . . . . . . . . . . . . 54
25 Legal information . . . . . . . . . . . . . . . . . . . . . . 55
25.1 Data sheet status. . . . . . . . . . . . . . . . . . . . . . 55
25.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
25.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 55
25.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 56
26 Contact information . . . . . . . . . . . . . . . . . . . . 56
27 Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
28 Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
29 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

PCF8576DT/2,118

Mfr. #:
Manufacturer:
NXP Semiconductors
Description:
LCD Drivers LCD DRIVER 40/160SEG
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union