PCF8576CT/1,118 NXP Semiconductors, PCF8576CT/1,118 Datasheet

IC LCD DVR UNVRSL LOW-MUX 56VSOP

PCF8576CT/1,118

Manufacturer Part Number
PCF8576CT/1,118
Description
IC LCD DVR UNVRSL LOW-MUX 56VSOP
Manufacturer
NXP Semiconductors
Datasheet

Specifications of PCF8576CT/1,118

Package / Case
56-VSOP
Display Type
LCD
Configuration
40 Segment
Interface
I²C
Current - Supply
120µA
Voltage - Supply
2 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Number Of Digits
20
Number Of Segments
160
Maximum Clock Frequency
315 KHz
Operating Supply Voltage
2 V to 6 V
Maximum Power Dissipation
400 mW
Maximum Operating Temperature
+ 150 C
Maximum Supply Current
120 uA
Minimum Operating Temperature
- 65 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Digits Or Characters
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
568-1080-2
935278818118
PCF8576CTD-T
1. General description
2. Features and benefits
1.
The definition of the abbreviations and acronyms used in this data sheet can be found in
The PCF8576C is a peripheral device which interfaces to almost any Liquid Crystal
Display (LCD)
multiplexed LCD containing up to four backplanes and up to 40 segments and can easily
be cascaded for larger LCD applications. The PCF8576C is compatible with most
microprocessors or microcontrollers and communicates via a two-line bidirectional
I
auto-incremented addressing and by hardware subaddressing.
2
C-bus. Communication overheads are minimized by a display RAM with
PCF8576C
Universal LCD driver for low multiplex rates
Rev. 10 — 22 July 2010
Single-chip LCD controller and driver
40 segment drives:
Versatile blinking modes
No external components required (even in multiple device applications)
Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing
Selectable display bias configuration: static,
Internal LCD bias generation with voltage-follower buffers
40 × 4-bit RAM for display data storage
Auto-incremented display data loading across device subaddress boundaries
Display memory bank switching in static and duplex drive modes
Wide logic LCD supply range:
Low power consumption
May be cascaded for large LCD applications (up to 2560 segments possible)
No external components
Separate or combined LCD and logic supplies
Optimized pinning for plane wiring in both and multiple PCF8576C applications
Power-saving mode for extremely low power consumption in battery-operated and
telephone applications
Up to twenty 7-segment alphanumeric characters
Up to ten 14-segment alphanumeric characters
Any graphics of up to 160 elements
From 2 V for low-threshold LCDs
Up to 6 V for guest-host LCDs and high-threshold twisted nematic LCDs
1
with low multiplex rates. It generates the drive signals for any static or
1
2
, or
Section
1
3
18.
Product data sheet

Related parts for PCF8576CT/1,118

PCF8576CT/1,118 Summary of contents

Page 1

PCF8576C Universal LCD driver for low multiplex rates Rev. 10 — 22 July 2010 1. General description The PCF8576C is a peripheral device which interfaces to almost any Liquid Crystal Display (LCD) multiplexed LCD containing up to four backplanes and ...

Page 2

... NXP Semiconductors 3. Ordering information Table 1. Ordering information Type number Package Name PCF8576CHL/1 LQFP64 PCF8576CT/1 VSO56 PCF8576CTT/1 HTSSOP56 PCF8576CU/F1 PCF8576CU PCF8576CU/2/F2 PCF8576CU/2 [1] Delivery form: chip in tray. 4. Marking Table 2. Type number PCF8576CHL/1 PCF8576CT/1 PCF8576CTT/1 PCF8576CU/F1 PCF8576CU/2/F2 PCF8576C Product data sheet Description plastic low profile quad flat package; ...

Page 3

... NXP Semiconductors 5. Block diagram V DD LCD BIAS GENERATOR V LCD CLK TIMING BLINKER SYNC OSC OSCILLATOR POWER- RESET V SS SCL INPUT FILTERS SDA Fig 1. Block diagram of PCF8576C PCF8576C Product data sheet BP0 BP2 BP1 BP3 BACKPLANE OUTPUTS LCD VOLTAGE SELECTOR PCF8576C DISPLAY ...

Page 4

... NXP Semiconductors 6. Pinning information 6.1 Pinning Fig 2. PCF8576C Product data sheet 1 n.c. S34 2 S35 3 S36 4 5 S37 6 S38 S39 7 n. SDA 11 SCL SYNC 12 CLK OSC 16 A0 Top view. For mechanical details, see Pin configuration for LQFP64 (PCF8576CHL/1) All information provided in this document is subject to legal disclaimers. ...

Page 5

... NXP Semiconductors Fig 3. PCF8576C Product data sheet 1 SDA 2 SCL SYNC 3 CLK OSC SA0 LCD BP0 13 BP2 14 BP1 15 16 BP3 S10 S11 28 Top view. For mechanical details, see Pin configuration for VSO56 (PCF8576CT/1) All information provided in this document is subject to legal disclaimers. Rev. 10 — 22 July 2010 ...

Page 6

... NXP Semiconductors Fig 4. PCF8576C Product data sheet 1 SDA 2 SCL SYNC 3 CLK OSC SA0 LCD BP0 13 BP2 14 BP1 15 16 BP3 S10 S11 28 Top view. For mechanical details, see Pin configuration for HTSSOP56 (PCF8576CTT/1) All information provided in this document is subject to legal disclaimers. Rev. 10 — 22 July 2010 ...

Page 7

... NXP Semiconductors Fig 5. PCF8576C Product data sheet S18 35 S19 36 S20 37 S21 38 S22 39 S23 40 S24 41 PCF8576CU S25 42 S26 43 S27 44 S28 45 S29 46 S30 47 S31 48 S32 49 S33 Viewed from pin side. For mechanical details, see Pin locations of PCF8576CU/F1 and PCF8576CU/2/F2 All information provided in this document is subject to legal disclaimers. ...

Page 8

... NXP Semiconductors 6.2 Pin description Table 3. Pin description Symbol Pin LQFP64 VSO56 (PCF8576CHL) (PCF8576CT) SDA 10 1 SCL 11 2 SYNC 12 3 CLK OSC SA0 LCD BP0, BP2 BP1, BP3 S0 to S39 24, 33, 48 [1] The die paddle (exposed pad) is connected to V [2] The substrate (rear side of the die) is connected to V ...

Page 9

... NXP Semiconductors 7. Functional description The PCF8576C is a versatile peripheral device designed to interface between any microprocessor or microcontroller to a wide variety of LCD segment or dot matrix displays (see Figure backplanes and segments. Fig 6. The possible display configurations of the PCF8576C depend on the number of active backplane outputs required. A selection of display configurations is shown in of these configurations can be implemented in the typical system shown in Table 4 ...

Page 10

... NXP Semiconductors V Fig 7. The host microprocessor or microcontroller maintains the 2-line I channel with the PCF8576C. Biasing voltages for the multiplexed LCD waveforms are generated internally, removing the need for an external bias generator. The internal oscillator is selected by connecting pin OSC to V power supplies (pins V 7 ...

Page 11

... NXP Semiconductors 7.3 LCD voltage selector The LCD voltage selector coordinates the multiplexing of the LCD in accordance with the selected LCD drive configuration. The operation of the voltage selector is controlled by the mode-set command from the command decoder. The biasing configurations that apply to the preferred modes of operation, together with the biasing characteristics as functions of ...

Page 12

... NXP Semiconductors Using Equation ⁄ 1 bias is 2 ⁄ 1 bias is 2 The advantage of these LCD drive modes is a reduction of the LCD full scale voltage V as follows: • 1:3 multiplex ( • 1:4 multiplex ( These compare with It should be noted that V PCF8576C Product data sheet ...

Page 13

... NXP Semiconductors 7.4 LCD drive mode waveforms 7.4.1 Static drive mode The static LCD drive mode is used when a single backplane is provided in the LCD. Backplane and segment drive waveforms for this mode are shown in Fig 8. PCF8576C Product data sheet V LCD BP0 V SS ...

Page 14

... NXP Semiconductors 7.4.2 1:2 Multiplex drive mode When two backplanes are provided in the LCD, the 1:2 multiplex mode applies. The PCF8576C allows the use of Fig 9. PCF8576C Product data sheet ⁄ 1 bias LCD BP0 LCD LCD BP1 LCD LCD LCD Sn LCD LCD ...

Page 15

... NXP Semiconductors Fig 10. Waveforms for the 1:2 multiplex drive mode with PCF8576C Product data sheet V LCD LCD BP0 LCD LCD LCD BP1 LCD LCD LCD LCD LCD LCD S n LCD LCD LCD LCD state − LCD − LCD −V LCD V LCD ...

Page 16

... NXP Semiconductors 7.4.3 1:3 Multiplex drive mode When three backplanes are provided in the LCD, the 1:3 multiplex drive mode applies as shown in Fig 11. Waveforms for the 1:3 multiplex drive mode with PCF8576C Product data sheet Figure 11. V LCD LCD BP0 LCD V SS ...

Page 17

... NXP Semiconductors 7.4.4 1:4 multiplex drive mode When four backplanes are provided in the LCD, the 1:4 multiplex drive mode applies, as shown in BP0 BP1 BP2 BP3 Sn Sn+1 Sn+2 Sn+3 state 1 state 2 Fig 12. Waveforms for the 1:4 multiplex mode with PCF8576C Product data sheet Figure 12 ...

Page 18

... NXP Semiconductors 7.5 Oscillator The internal logic and the LCD drive signals of the PCF8576C are timed by the frequency f , which equals either the built-in oscillator frequency f clk f . clk(ext) The clock frequency (f for data reception from the I rate of 100 kHz, f 7.5.1 Internal clock The internal oscillator is enabled by connecting pin OSC to pin V output from pin CLK is the clock signal for any cascaded PCF8576C in the system ...

Page 19

... NXP Semiconductors The lower clock frequency has the disadvantage of increasing the response time when large amounts of display data are transmitted on the I process a display data byte before the next one arrives, it holds the SCL line LOW until the first display data byte is stored. This slows down the transmission rate of the I but no data loss occurs ...

Page 20

... NXP Semiconductors The display RAM bit map backplane outputs BP0 to BP3, and the columns which correspond with the segment outputs S0 to S39. In multiplexed LCD applications the segment data of the first, second, third and fourth row of the display RAM are time-multiplexed with BP0, BP1, BP2, and BP3 respectively ...

Page 21

LCD segments LCD backplanes S a n+2 BP0 n+3 n+1 static n+5 n n+6 BP0 1 ...

Page 22

... NXP Semiconductors The following applies to • In the static drive mode, the eight transmitted data bits are placed in row 0 of eight successive 4-bit RAM words. • In the 1:2 multiplex mode, the eight transmitted data bits are placed in pairs into row 0 and 1 of four successive 4-bit RAM words. ...

Page 23

... NXP Semiconductors 7.14 Bank selector 7.14.1 Output bank selector The output bank selector (see address for transfer to the display register. The actual row selected depends on the LCD drive mode in operation and on the instant in the multiplex sequence. • In 1:4 multiplex mode: all RAM addresses of row 0 are selected, followed sequentially by the contents of row 1, row 2, and then row 3. • ...

Page 24

... NXP Semiconductors In the 1:3 and 1:4 multiplex modes, where no alternate RAM bank is available, groups of LCD segments can be blinked by selectively changing the display RAM data at fixed time intervals. If the entire display needs to be blinked at a frequency other than the nominal blink frequency, this can be done using the mode-set command to set and reset the display enable bit E at the required rate (see 7 ...

Page 25

... NXP Semiconductors 7.16.3 System configuration A device generating a message is a transmitter and a device receiving a message is the receiver. The device that controls the message is the master and the devices which are controlled by the master are the slaves. The system configuration is illustrated in Figure 17. ...

Page 26

... NXP Semiconductors Fig 18. Acknowledgement of the I 7.16.5 PCF8576C I The PCF8576C acts transmit data the acknowledge signals of the selected devices. Device selection depends on the 2 I C-bus slave address, the transferred command data and the hardware subaddress. In single device application, the hardware subaddress inputs A0, A1, and A2 are normally ...

Page 27

... NXP Semiconductors 2 The I C-bus protocol is shown in condition (S) from the I slave addresses available. All PCF8576Cs with the corresponding SA0 level acknowledge in parallel with the slave address but all PCF8576Cs with the alternative SA0 level ignore the whole I After acknowledgement, one or more command bytes follow which define the status of the addressed PCF8576Cs ...

Page 28

... NXP Semiconductors Table 8. Command Bit mode-set load-data-pointer device-select bank-select blink-select 7.18.1 Mode-set command Table 9. Bit [1] The possibility to disable the display allows implementation of blinking under external control. [2] Bit B is not applicable for the static LCD drive mode. 7.18.2 Load-data-pointer command Table 10. ...

Page 29

... NXP Semiconductors 7.18.3 Device-select command Table 11. Bit 7.18.4 Bank-select command Table 12. Bit [1] The bank-select command has no effect in 1:3 and 1:4 multiplex drive modes. 7.18.5 Blink-select command Table 13. Bit [1] Normal blinking is assumed when the LCD multiplex drive modes 1:3 or 1:4 are selected. ...

Page 30

... NXP Semiconductors 8. Internal circuitry Fig 21. Device protection diagram PCF8576C Product data sheet Universal LCD driver for low multiplex rates V LCD V SS SDA, SCL CLK, OSC A2, SA0, SYNC V DD All information provided in this document is subject to legal disclaimers. Rev. 10 — 22 July 2010 PCF8576C ...

Page 31

... NXP Semiconductors 9. Limiting values CAUTION Static voltages across the liquid crystal display can build up when the LCD supply voltage (V LCD display artifacts. To avoid such artifacts, V Table 14. In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter LCD DD(LCD) P tot ...

Page 32

... NXP Semiconductors 10. Static characteristics Table 15. Static characteristics Symbol Parameter Supplies V supply voltage DD V LCD supply voltage LCD I supply current low-power mode supply DD(lp) current Logic V LOW-level input voltage IL V HIGH-level input voltage IH V LOW-level output voltage OL V HIGH-level output voltage ...

Page 33

... NXP Semiconductors Table 15. Static characteristics Symbol Parameter LCD outputs V voltage on pin voltage on pin resistance on pin resistance on pin S S ≤ V − for ⁄ 1 [1] V bias. LCD DD 3 [2] LCD outputs are open-circuit; inputs at V [3] Resets all logic when V < POR [4] Periodically sampled, not 100 % tested. ...

Page 34

... NXP Semiconductors (μA) 40 normal mode f = 200 kHz clk 30 20 power-saving mode external clock; T LCD Fig 24 function 10.2 Typical LCD output characteristics 10 R O(max) (kΩ) 1 − ° LCD amb Fig 26 function of V O(max) PCF8576C Product data sheet mbe528 −I DD(LCD) (μ kHz ...

Page 35

... NXP Semiconductors 11. Dynamic characteristics Table 16. Dynamic characteristics Symbol Parameter Timing characteristics: driver timing waveforms (see f clock frequency clk t clock HIGH time clk(H) t clock LOW time clk(L) t SYNC propagation delay PD(SYNC_N) t SYNC LOW time SYNC_NL t driver propagation delay PD(drv) 2 Timing characteristics: I ...

Page 36

... NXP Semiconductors BP0 to BP3, and S0 to S39 Fig 28. Driver timing waveforms SDA SCL SDA Fig 29. I PCF8576C Product data sheet 1/f CLK t clk(H) CLK SYNC t PD(SYNC_N BUF LOW t HD;STA 2 C-bus timing waveforms All information provided in this document is subject to legal disclaimers. Rev. 10 — 22 July 2010 ...

Page 37

... NXP Semiconductors 12. Application information 12.1 Cascaded operation In large display configurations PCF8576Cs can be recognized on the same 2 I C-bus by using the 3-bit hardware subaddress (A0, A1 and A2) and the programmable 2 I C-bus slave address (SA0). Table 17. Cluster 1 2 Cascaded PCF8576Cs are synchronized. They can share the backplane signals from one of the devices in the cascade ...

Page 38

... NXP Semiconductors V LCD V DD MICRO- PROCESSOR/ MICRO- CONTROLLER V SS Fig 30. Cascaded PCF8576C configuration The SYNC line is provided to maintain the correct synchronization between all cascaded PCF8576Cs. This synchronization is guaranteed after the power-on reset. The only time that SYNC is likely to be needed is if synchronization is accidentally lost (e.g. by noise in adverse electrical environments ...

Page 39

... NXP Semiconductors Fig 31. Synchronization of the cascade for the various PCF8576C drive modes PCF8576C Product data sheet BP0 SYNC (a) static drive mode. BP0 (1/2 bias) BP0 (1/3 bias) SYNC (b) 1:2 multiplex drive mode. BP0 (1/3 bias) SYNC (c) 1:3 multiplex drive mode. BP0 ...

Page 40

... NXP Semiconductors SDA SCL SYNC CLK V DD OSC SA0 LCD BP0 BP2 BP1 BP3 S10 S11 S0 S10 S11 backplanes Fig 32. Single plane wiring of packaged PCF8576CT PCF8576C Product data sheet 1 56 S39 2 55 S38 3 54 S37 4 53 S36 5 52 S35 6 51 S34 ...

Page 41

... NXP Semiconductors 13. Package outline LQFP64: plastic low profile quad flat package; 64 leads; body 1 pin 1 index DIMENSIONS (mm are the original dimensions) A UNIT max. 0.20 1.45 mm 1.6 0.25 0.05 1.35 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION ...

Page 42

... NXP Semiconductors VSO56: plastic very small outline package; 56 leads pin 1 index 1 e DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT max. 0.3 3.0 mm 3.3 0.25 0.1 2.8 0.012 0.12 inches 0.13 0.01 0.004 0.11 Notes 1. Plastic or metal protrusions of 0.3 mm (0.012 inch) maximum per side are not included. ...

Page 43

... NXP Semiconductors HTSSOP56: plastic thermal enhanced thin shrink small outline package; 56 leads; body width 6.1 mm; exposed die pad pin 1 index 1 DIMENSIONS (mm are the original dimensions) A UNIT max. 0.15 1.05 mm 1.2 0.25 0.05 0.80 Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. ...

Page 44

... NXP Semiconductors 14. Bare die outline Wire bond die; 56 bonding pads; 3.0 x 2. Dimensions (3) Unit max 0.610 mm nom 0.38 2.82 3.00 min 0.096 Note 1. Pad size 2. Passivation opening 3. Dimension not drawn to scale 4. Marking code: PC8576C-1 Outline version IEC PCF8576CU Fig 36. Bare die outline of PCF8576CU/F1 ...

Page 45

... NXP Semiconductors Bare die; 56 bumps; 3.0 x 2. Dimensions Unit max mm nom 0.398 0.0175 0.380 0.094 2.82 min Note 1. Dimension not drawn to scale 2. Marking code: PC8576C-2 Outline version IEC PCF8576CU/2 Fig 37. Bare die outline of PCF8576CU/2/F2 PCF8576C Product data sheet 0.5 scale ...

Page 46

... NXP Semiconductors Table 18. All x/y coordinates represent the position of the center of each pad with respect to the center (x the chip. Symbol SDA SCL SYNC CLK V DD OSC SA0 LCD BP0 BP2 BP1 BP3 S10 S11 S12 S13 S14 S15 S16 S17 S18 ...

Page 47

... NXP Semiconductors Table 18. All x/y coordinates represent the position of the center of each pad with respect to the center (x the chip. Symbol S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38 S39 Table 19. Symbol 15. Handling information All input and output pins are protected against ElectroStatic Discharge (ESD) under normal handling ...

Page 48

... NXP Semiconductors Fig 38. Tray details Fig 39. Tray alignment PCF8576C Product data sheet Universal LCD driver for low multiplex rates All information provided in this document is subject to legal disclaimers. Rev. 10 — 22 July 2010 PCF8576C 001aai237 001aaj619 © NXP B.V. 2010. All rights reserved. ...

Page 49

... NXP Semiconductors Table 20. Symbol 17. Soldering of SMD packages This text provides a very brief insight into a complex technology. A more in-depth account of soldering ICs can be found in Application Note AN10365 “Surface mount reflow soldering description”. 17.1 Introduction to soldering Soldering is one of the most common methods through which packages are attached to Printed Circuit Boards (PCBs), to form electrical circuits ...

Page 50

... NXP Semiconductors Key characteristics in both wave and reflow soldering are: • Board specifications, including the board finish, solder masks and vias • Package footprints, including solder thieves and orientation • The moisture sensitivity level of the packages • Package placement • Inspection and repair • ...

Page 51

... NXP Semiconductors Table 22. Package thickness (mm) < 1.6 1.6 to 2.5 > 2.5 Moisture sensitivity precautions, as indicated on the packing, must be respected at all times. Studies have shown that small packages reach higher temperatures during reflow soldering, see Fig 40. Temperature profiles for large and small components For further information on temperature profiles, refer to Application Note AN10365 “ ...

Page 52

... NXP Semiconductors 18. Abbreviations Table 23. Acronym CDM DC HBM LCD LSB MM MOS MSB MSL PCB POR RC RAM RMS SCL SDA SMD PCF8576C Product data sheet Abbreviations Description Charged-Device Model Direct Current Human Body Model Inter-Integrated Circuit Integrated Circuit Liquid Crystal Display Least Significant Bit ...

Page 53

... NXP Semiconductors 19. References [1] AN10170 — Design guidelines for COG modules with NXP monochrome LCD drivers [2] AN10365 — Surface mount reflow soldering description [3] AN10706 — Handling bare die [4] IEC 60134 — Rating systems for electronic tubes and valves and analogous semiconductor devices [5] IEC 61340-5 — ...

Page 54

... PCF8576C v.10 20100722 • Modifications: The format of this data sheet has been redesigned to comply with the new identity guidelines of NXP Semiconductors. • Legal texts have been adapted to the new company name where appropriate. • Added new type PCF8576CHL/1 as replacement of PCF8576CH PCF8576C v.9 20090709 PCF8576C v ...

Page 55

... In no event shall NXP Semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or ...

Page 56

... If there are data sheet limits not guaranteed, these will be separately indicated in the data sheet. There are no post-packing tests performed on individual die or wafers. NXP Semiconductors has no control of third party procedures in the sawing, handling, packing or assembly of the die. Accordingly, NXP Semiconductors assumes no liability for device functionality or performance of the die or systems after third party sawing, handling, packing or assembly of the die ...

Page 57

... NXP Semiconductors 23. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 3 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 4 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Functional description . . . . . . . . . . . . . . . . . . . 9 7.1 Power-On-Reset (POR 7.2 LCD bias generator . . . . . . . . . . . . . . . . . . . . 10 7.3 LCD voltage selector . . . . . . . . . . . . . . . . . . . 11 7.4 LCD drive mode waveforms . . . . . . . . . . . . . . 13 7 ...

Related keywords