Epson SED 1520 Series User Manual

1S-MOS SYSTEMS, INC.SED1520CMOS Dot Matrix LCD DriverData Sheet and Design Guide

10S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

11S-MOS SYSTEMS, INC.2.0Pin Description

12S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

13S-MOS SYSTEMS, INC.2.0 – 2.3 2.0 Pin Description2.0 Pin Description2.1 Power Signals• VDDConnected to +5V power. Common to MPUpower pin VCC.• VSS

14S-MOS SYSTEMS, INC.2.0 Pin Description 2.3•FRLCD AC signal I/O pin. Connected to pin M ofthe common driver.• I/O selection:Chip containing commonsM

15S-MOS SYSTEMS, INC.1.4 2.0 Pin Description3.0Description of Circuit Blocks

16S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

17S-MOS SYSTEMS, INC.3.0 – 3.3 3.0 Description of Circuit Blocks3.0 Description of Circuit Blocks3.1 MPU Interface3.1.1 Selection of Interface Typ

18S-MOS SYSTEMS, INC.Figure 3.13.0 Description of Circuit Blocks 3.3 – 3.53.4 Column Address CounterThe column address counter is a 7-bit presettabl

19S-MOS SYSTEMS, INC.3.6 – 3.11 3.0 Description of Circuit Blocks3.6 Display Data RAMDot data for display is stored in this RAM. Since theMPU and LC

2S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

20S-MOS SYSTEMS, INC.3.0 Description of Circuit Blocks 3.6 – 3.11Figure 3.3. Relationship between Display Data RAM Locations and Addresses (Display S

21S-MOS SYSTEMS, INC.3.6 – 3.11 3.0 Description of Circuit BlocksFigure 3.4. LSI containing oscillatorM/S(CS)OSC1(CL)OSC2Master LSIVDDM/S(CS)OSC1(

22S-MOS SYSTEMS, INC.The input at pin RES is level-sensed to select an MPUinterface mode as shown in Table 3.1. For interfacingwith an 80-family MPU,

23S-MOS SYSTEMS, INC.3.11 – 3.12 3.0 Description of Circuit BlocksFigure 3.6. Examples of LCD Driving WaveformVDDVSSVDDV1V2V3V4V5FRCOM 0VDDV1

24S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

25S-MOS SYSTEMS, INC.4.0Commands

26S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

27S-MOS SYSTEMS, INC.Table 4.1. CommandsCommandCodeFunctionA0 RD WR D7 D6 D5 D4 D3 D2 D1 D0(1) Display ON/OFF 01010101110/1Turns all display on or of

28S-MOS SYSTEMS, INC.4.0 Commands 4.1 – 4.54.1 Display ON/OFFThis command forces all display to turn on or off.R/WA0 RD WR D7 D6 D5 D4 D3 D2 D1 D001

29S-MOS SYSTEMS, INC.4.6 – 4.11 4.0 Commands4.6 Write Display DataThis command allows the MPU to write 8 bits of datainto the display data RAM. Once

3S-MOS SYSTEMS, INC.Table of Contents SED1520Contents1.0 Overview ...

30S-MOS SYSTEMS, INC.* Even in the Read Modify Write mode, any commandother than Read/Write Data and Set Column Addressmay be used.4.0 Commands 4.11

31S-MOS SYSTEMS, INC.4.14 4.0 CommandsVDDV1V2V3V4V5VDDVSSHPower savesignalSED1520Figure 4.3

32S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

33S-MOS SYSTEMS, INC.5.0Electrical Characteristics

34S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

35S-MOS SYSTEMS, INC.5.0 – 5.1 5.0 Electrical Characteristics5.0 Electrical Characteristics5.1 Absolute Maximum RatingsParameter Symbol Condition U

36S-MOS SYSTEMS, INC.5.0 Electrical Characteristics 5.25.2 DC CharacteristicsVDD = 0V, Ta = –20 to 75°CParameter Symbol Condition Min Typ Max UnitAp

37S-MOS SYSTEMS, INC.5.2 5.0 Electrical Characteristics*9 Relation between oscillation frequency, frame and Rf [SED1520F0A]Figure 5.1Figure 5.2Relati

38S-MOS SYSTEMS, INC.5.0 Electrical Characteristics 5.3 – 5.3.15.3 Timing Characteristics5.3.1 System Bus Read/Write I (80-family MPU)Ta = –20 to 7

39S-MOS SYSTEMS, INC.5.3.2 5.0 Electrical Characteristics5.3.2 System Bus Read/Write II (68-family MPU)Ta = –210 to 75°C, VSS = –5.0V ±10%Parameter

4S-MOS SYSTEMS, INC.SED1520 Table of Contents5.0 Electrical Characteristics ...

40S-MOS SYSTEMS, INC.5.0 Electrical Characteristics 5.3.35.3.3 Display Control TimingInput TimingTa = –20 to 75°C, VSS = –5.0V ±10%Parameter Symbol S

41S-MOS SYSTEMS, INC.6.0MPU Interface(Reference)

42S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

43S-MOS SYSTEMS, INC.6.0 6.0 MPU Interface (Reference)6.0 MPU Interface (Reference)A0IORQRDWRRESGNDRESETCSRDWRRESMPU SED1520FAADecoderVSSA2 ~ A7D0 ~

44S-MOS SYSTEMS, INC.SED1520FOADecoderA0D0 ~ D7RD(E)WR(R/W)RESCSFigure 6.36.0 MPU Interface (Reference) 6.0

45S-MOS SYSTEMS, INC.7.0LCD DriverInterconnections

46S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

47S-MOS SYSTEMS, INC.7.0 7.0 LCD Driver Interconnections7.0 LCD Driver InterconnectionsFigure 7.1. SED1520FOA – SED1520FOATo LCD SEGM/SSED1520FAA(S

48S-MOS SYSTEMS, INC.Figure 7.4. SED1520FAA – SED1521FAAFigure 7.5. HD44103CH – SED1521FAA7.0 LCD Driver Interconnections 7.0*1. In this connection,

49S-MOS SYSTEMS, INC.8.0Typical Connectionswith LCD Panel

5S-MOS SYSTEMS, INC.1.0Overview

50S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

51S-MOS SYSTEMS, INC.8.0 8.0 Typical Connections with LCD Panel8.0 Typical Connections with LCD Panel[Full dot LCD panel: 1 character = 6 × 8 dots]S

52S-MOS SYSTEMS, INC.8.0 Typical Connections with LCD Panel 8.0SEG32 x 320LCD132180SED1521FAA(1)SEGSED1521FAA(2)SEGSED1521FAA(3)SEGSED1521FAA(4)8

53S-MOS SYSTEMS, INC.9.0Package Dimensions(Reference)

54S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

55S-MOS SYSTEMS, INC.9.0 9.0 Package Dimensions (Reference)9.0 Package Dimensions (Reference)19.6 ± Index81100503113080 5125.6 ± 0.4200.

56S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

6S-MOS SYSTEMS, INC.THIS PAGE INTENTIONALLY BLANK

7S-MOS SYSTEMS, INC.1.0 – 1.2.1 1.0 Overview1.0 Overview1.1 DescriptionThe SED1520 is a dot matrix LCD driver LSI intendedfor display of characters

8S-MOS SYSTEMS, INC.1.0 Overview 1.31.3 Block DiagramLINE ADDRESS DECODERDISPLAY DATA RAM2560 BITSI/O BUFFERINTERNAL BUSLOW ADDRESSREGISTERBUSHOL

9S-MOS SYSTEMS, INC.1.4.1 Pin Configuration TableProduct NamePin Number74 75 96 ~ 100, 1 – 1j 93 94 95SED1520F0A OSC1 OSC2 COM0 ~ COM15 M/S V4 V1SED1