PCF8579 Philips Semiconductors, PCF8579 Datasheet

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PCF8579

Manufacturer Part Number
PCF8579
Description
LCD column driver for dot matrix graphic displays
Manufacturer
Philips Semiconductors
Datasheet

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Product specification
Supersedes data of 1996 Oct 25
File under Integrated Circuits, IC12
DATA SHEET
PCF8579
LCD column driver for dot matrix
graphic displays
INTEGRATED CIRCUITS
1997 Apr 01

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PCF8579 Summary of contents

Page 1

... DATA SHEET PCF8579 LCD column driver for dot matrix graphic displays Product specification Supersedes data of 1996 Oct 25 File under Integrated Circuits, IC12 INTEGRATED CIRCUITS 1997 Apr 01 ...

Page 2

... APPLICATION INFORMATION 15 CHIP DIMENSIONS AND BONDING PAD LOCATIONS 16 CHIP-ON GLASS INFORMATION 17 PACKAGE OUTLINES 18 SOLDERING 18.1 Introduction 18.2 Reflow soldering 18.3 Wave soldering 18.3.1 LQFP 18.3.2 VSO 18.3.3 Method (LQFP and VSO) 18.4 Repairing soldered joints 19 DEFINITIONS 20 LIFE SUPPORT APPLICATIONS 21 PURCHASE OF PHILIPS I 2 C-BUS 2 Product specification PCF8579 2 C COMPONENTS ...

Page 3

... Point-of-sale terminals Computer terminals Instrumentation. 3 GENERAL DESCRIPTION The PCF8579 is a low power CMOS LCD column driver, designed to drive dot matrix graphic displays at multiplex rates 16 32. The device has 40 outputs and can drive 32 multiplexed LCD PCF8579s can be cascaded and devices may be used on the same I (using the two slave addresses) ...

Page 4

... AND SENSING DISPLAY RAM AMPLIFIERS X DECODER SUBADDRESS RAM DATA POINTER COUNTER C-BUS COMMAND CONTROLLER DECODER 7 (13) SA0 Fig.1 Block diagram. 4 Product specification ( (1) PCF8579 DISPLAY DECODER (9) 3 TIMING (10) 4 GENERATOR MSA919 PCF8579 SYNC CLK ...

Page 5

... Product specification PCF8579 DESCRIPTION 2 I C-bus serial data input/output 2 I C-bus serial clock input cascade synchronization input external clock input ground (logic) test pin (connect to V ...

Page 6

... C15 17 40 C39 C16 C38 18 39 C17 19 C37 38 C18 20 C36 37 C19 36 C35 21 C20 22 35 C34 C21 C33 23 34 C22 24 C32 33 C23 C31 25 32 C24 26 C30 31 C25 C29 27 30 C26 C28 28 29 C27 MSA918 Fig.2 Pin configuration (VSO56). 6 Product specification PCF8579 ...

Page 7

... SDA SCL 8 SYNC 9 CLK TEST 12 13 SA0 n. 1997 Apr 01 PCF8579 Fig.3 Pin configuration (LQFP64). 7 Product specification PCF8579 48 C22 47 C23 C24 46 45 C25 44 C26 43 C27 42 C28 41 C29 40 C30 39 C31 38 C32 37 C33 C34 36 35 C35 n.c. ...

Page 8

... LCD column driver for dot matrix graphic displays 7 FUNCTIONAL DESCRIPTION The PCF8579 column driver is designed for use with the PCF8578. Together they form a general purpose LCD dot matrix chip set. Typically PCF8579s may be used with one PCF8578. Each of the PCF8579s is identified by a unique 4-bit hardware subaddress, set by pins ...

Page 9

... V LCD SYNC 1997 Apr 01 T frame Fig.5 LCD row/column waveforms MSA841 Product specification PCF8579 ON OFF 1:8 1:16 1:24 1:32 column display ...

Page 10

... (t) = C2(t) R2(t): state off(rms 0.297 Product specification PCF8579 state 1 (OFF) state 2 (ON) dot matrix 1:8 multiplex rate MSA840 general relationship (n = multiplex rate) V on(rms off(rms ...

Page 11

... Fig.7 LCD drive mode waveforms for multiplex rate.sa. 1997 Apr 01 T frame R1(t): general relationship (n = multiplex rate on(rms) = 0.316 ( ) R2(t): V off(rms 0.254 Product specification dot matrix 1:16 multiplex rate MSA836 PCF8579 state 1 (OFF) state 2 (ON) ...

Page 12

... LCD column driver for dot matrix graphic displays 7.3 Timing generator The timing generator of the PCF8579 organizes the internal data flow from the RAM to the display drivers. An external synchronization pulse SYNC is received from the PCF8578. This signal maintains the correct timing relationship between cascaded devices. ...

Page 13

... RAM data bytes are written or read as indicated above PCF8579 PCF8579 driver 2 driver k PCF8579 system RAM character mode half-graphic mode full-graphic mode Fig.8 RAM access mode. bank 0 bank 1 bank 2 ...

Page 14

Acrobat reader. white to force landscape pages to be ... DEVICE SELECT: subaddress 12 RAM ACCESS: character mode bank 1 LOAD X-ADDRESS: X-address = ...

Page 15

... Philips Semiconductors LCD column driver for dot matrix graphic displays bank 0 bank 1 bank 2 bank 3 Fig.10 Relationship between display and SET START BANK multiplex rate and start bank = 2. 1997 Apr 01 RAM LCD MSA851 15 Product specification PCF8579 top of LCD ...

Page 16

... Both the data pointer and subaddress counter are automatically incremented, enabling a stream of data to be transferred either to, or from, the intended devices. In multiple device applications, the hardware subaddress pins of the PCF8579s (A0 to A3) are connected represent the desired hardware subaddress code. DD ...

Page 17

... S COMMAND byte at this moment master transmitter becomes a master receiver and PCF8578/PCF8579 slave receiver becomes a slave transmitter (b) acknowledge by all addressed acknowledge PCF8578s / PCF8579s from master DATA 0 n bytes (c) 17 Product specification acknowledge by A0, A1, A2 and A3 selected PCF8578s / ...

Page 18

... If the bit is reset, it indicates the conclusion of the command transfer. Further bytes will be regarded as display data. Commands are transferred in WRITE mode only. The five commands available to the PCF8579 are defined in Tables 2 and 3. Table 2 Summary of commands COMMAND SET MODE ...

Page 19

... Philips Semiconductors LCD column driver for dot matrix graphic displays Table 3 Definition of PCF8578/PCF8579 commands COMMAND SET MODE C 1 SET START BANK C 1 DEVICE SELECT C 1 RAM ACCESS C 1 LOAD X-ADDRESS C 0 1997 Apr 01 OPCODE OPTIONS see Table 4 ...

Page 20

... Decimal value BIT T Table 11 Load X-address option Decimal value BITS Product specification DESCRIPTION DESCRIPTION Y1 DESCRIPTION PCF8579 BITS A1 A0 BITS BITS Y0 BITS ...

Page 21

... In this event the transmitter must leave the data line HIGH to enable the master to generate a stop condition. data line change stable; of data data valid allowed Fig.13 Bit transfer. 21 Product specification PCF8579 MBA607 ...

Page 22

... SLAVE SLAVE TRANSMITTER / RECEIVER RECEIVER Fig.15 System configuration. START condition C-bus are available on request. Fig.16 Acknowledgement on the I 22 Product specification PCF8579 SDA SCL P STOP condition MBA608 MASTER MASTER TRANSMITTER / TRANSMITTER RECEIVER MBA605 clock pulse for acknowledgement 9 8 MBA606 - 1 2 C-bus ...

Page 23

... Inputs and outputs are protected against electrostatic discharge in normal handling. However totally safe it is desirable to take normal precautions appropriate to handling MOS devices. Advice can be found in Data Handbook IC12 under “Handling MOS Devices”. 1997 Apr 01 PARAMETER and LCD 23 Product specification PCF8579 MIN. MAX. 0 ...

Page 24

... LOAD 24 Product specification = 40 to +85 C; unless otherwise specified. MIN. TYP. 2.5 6 1.3 1.8 V 0. LCD and V ) when the specified LCD PCF8579 MAX. UNIT V 3 ...

Page 25

... SDA C39 Fig.17 AC test loads. 25 Product specification +85 C; unless otherwise specified. MIN. TYP. note 1 4.7 4.7 4.0 4.7 4.0 250 0 4 MSA916 PCF8579 MAX. UNIT 10 kHz 100 s 100 kHz 100 1 ...

Page 26

... C0 to C39 k, full pagewidth SDA t BUF SCL SDA MGA728 1997 Apr CLK ( LCD t PLCD Fig.18 Driver timing waveforms. t LOW t HD;STA t HD;DAT SU;STA 2 Fig.19 I C-bus timing waveforms. 26 Product specification 0.5 V MSA917 SU;DAT t HIGH t SU;STO PCF8579 ...

Page 27

... SCL SDA SA0 SCL SDA SA0 1:32 multiplex rate dots (k 16) (20480 dots max.) 40 subaddress 1 columns subaddress LCD k PCF8579 SYNC CLK SCL SDA SA0 MSA845 ...

Page 28

... SYNC CLK SCL SDA SA0 SYNC CLK SCL SDA SA0 SA0 SDA SCL CLK SYNC PCF8579 A1 V LCD columns 40 columns subaddress LCD k PCF8579 ...

Page 29

... SYNC CLK SCL SDA SA0 SYNC CLK SCL SDA SA0 SA0 SDA SCL CLK SYNC PCF8579 A1 V LCD columns 32 40 columns subaddress LCD k PCF8579 ...

Page 30

... Acrobat reader. white to force landscape pages to be ... V SS SCL V DD SDA V LCD R0 R OSC ( n.c. n.c. PCF8578 R31/C31 Fig.23 Example of single plane wiring, single screen with multiplex rate (PCF8578 in row driver mode). LCD DISPLAY C0 C27 C28 C39 C0 PCF8579 C27 C28 C39 PCF8579 to other PCF8579s MSA852 ...

Page 31

... Fig.24 Bonding pad locations. 31 Product specification C10 46 45 C11 44 C12 C13 43 x C14 42 41 C15 C16 40 C17 39 38 C18 37 C19 C20 36 35 C21 C22 MSA920 PCF8579 ...

Page 32

... Product specification PCF8579 PINS VSO56 LQFP64 ...

Page 33

... Product specification PCF8579 PINS VSO56 LQFP64 ...

Page 34

... SDA R0 to R31 inputs SA0 and are left unconnected they are internally pulled- Fig.25 Typical chip-on glass application (viewed from underside of chip). PCF8578 LCD DISPLAY . LCD V SS CLK SYNC SCL SDA PCF8579 MSA850 ...

Page 35

... REFERENCES JEDEC EIAJ detail 1.6 1.45 2.25 0.2 0.1 1.4 1.30 0.063 0.057 0.008 0.004 0.089 0.055 0.051 EUROPEAN PROJECTION Product specification PCF8579 SOT190 ( 0.90 0.1 0. 0.035 0.004 0.022 ISSUE DATE 96-04-02 97-08-11 ...

Page 36

... 2.5 scale (1) ( 0.27 0.18 10.1 10.1 12.15 0.5 0.17 0.12 9.9 9.9 11.85 REFERENCES JEDEC EIAJ detail 12.15 0.75 1.0 0.2 0.12 0.1 11.85 0.45 EUROPEAN PROJECTION Product specification PCF8579 SOT314 (1) ( 1.45 1. 1.05 1.05 0 ISSUE DATE 95-12-19 97-08-01 ...

Page 37

... V) applied to the flat part of the lead. Contact time must be limited to 10 seconds 300 C. When using a dedicated tool, all other leads can be soldered in one operation within seconds between 270 and 320 C. 37 Product specification PCF8579 VSO) ...

Page 38

... Philips. This specification can be ordered using the code 9398 393 40011. 1997 Apr 01 C COMPONENTS 2 C components conveys a license under the Philips’ system provided the system conforms to the I 38 Product specification PCF8579 2 C patent to use the 2 C specification defined by ...

Page 39

... Philips Semiconductors LCD column driver for dot matrix graphic displays 1997 Apr 01 NOTES 39 Product specification PCF8579 ...

Page 40

... Tel. +46 8 632 2000, Fax. +46 8 632 2745 Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH, Tel. +41 1 488 2686, Fax. +41 1 481 7730 Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1, TAIPEI, Taiwan Tel. +886 2 2134 2870, Fax. +886 2 2134 2874 Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd., 209/2 Sanpavuth-Bangna Road Prakanong, BANGKOK 10260, Tel ...

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