Sanyo LC74721M Specifications

Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.

CMOS IC

On-screen Video Display Controllers

for NTSC or PAL-M

Ordering number:ENN4359A

LC74721, LC74721M

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, T aito-ku, TOKYO, 110-8534 JAPAN

Overview

The LC74721 and LC74721M are CMOS, video display
controllers for superimposing text and low-level graphics
onto an NTSC or PAL-M compatible television receiver.
Up to 240, 8 × 8-pixel characters can be displayed under
microprocessor control on a 24-character by 10-line dis­play.
The LC74721 and LC74721M feature selectable pixel width
and height, and 64 vertical and 64 horizontal display start
positions. It also features a flashing enable bit for each char­acter position.
The LC74721 and LC74721M operate from a 5V supply.
The LC74721 is available in 24-pin DIPs, and the
LC74721M, in 24-pin MFPs.

Features

• Complete text and graphics vide overlay circuitry.

• 64-character internal character generator ROM.

• 8 × 8-pixel characters.

• Three pixel widths and three pixel heights.

• Selectable background color.

• Built-in synchronization check and separation circuitry.

• Approximately 0.5 or 1 s period character flashing op­tion.

• NTSC or PAL-M format compatibility.

• 8-bit serial input format.

• 5V supply.

• 24-pin plastic DIP (300mil) and 24-pin plastic MFP
(375mil).

Package Dimensions

unit:mm

3067A-DIP24S

[LC74721]

21.0

24

1

0.9

(0.71)

1.78

0.48

0.95

unit:mm

3045B-MFP24

[LC74721M]

24

1

15.3

0.35

1.27

13

6.4

7.62

0.25

12

(3.25)

3.9max

3.3

0.51min

SANYO : DIP24S

13

7.9

12

2.15

0.1

0.67

SANYO : MFP24

0.15

2.5max

9.0

0.75

10.5

80101TN (KT)/D2293 JN B8-0377, A8-9893 No.4359–1/12

Block Diagram

LC74721, 74721M

No.4359–2/12

Pin Functions

rebmuNemaNnoitpircseD
1V
2NIX
3TUOX

41LRTC

5TUONYSC
6NICSO tuptuoretcarahcnoitarenegkcolclexiproftiucricCL.tupnirotallicsoCL

7TUOCSO tuptuoretcarahcnoitarenegkcolclexiproftiucricCL.tuptuorotallicsoCL
8CNYS
9SC ecnatsiserpu-lluphtiw,WOLnehwelbanetupniatadlaireS

01KLCSecnatsiserpu-lluphtiw,tupniatadlairesroftupnikcolC
11NISecnatsiserpu-lluphtiw,tupniatadlaireS
21V
31TUOVCtuptuolangisegamioedivetisopmoC
41CNnoitcennocoN
51NIVCtupnilangisegamioedivetisopmoC
61V

71NICNYS
81CPES desutonfinepoevaeL.noitcennocroticapacrotaludomtiucricnoitarapesnoitazinorhcnyS
91TUOPES
02NIPESVoteiT.tupnilangisnoitazinorhcnyslacitreV

122LRTC CSTNrofWOL.tupnitcelesdohtemnoitareneglangiscnysM-LAP/CSTN
223LRTCWOLnehwlangistupniCNYSV.lortnoctupniNIPES
32TSRecnatsiserpu-lluphtiw,tupnitesermetsyS
42V

LC74721, 74721M

1SS

2DD

1DD

1DD

dnuorG

f2(tupnikcolclanretxerosnoitcennocroticapacrotallicsolatsyrclangiscnyslanretnI

f4ro

CS

.edom

dnammocteserlanretniroftuptuooN.tuptuo

dnammocteserlanretniroftuptuo

)metsysgolanarof(noitaludomlevellangisegamioedivetisopmocrofylppusrewoP

metsyslatigidrofylppusrewopV5

langisnoitazinorhcnysetisopmocrolatnozirohlanretxenatupniotNICNYS

.desutonsinoitarapes

1DD

metsyslatigidrofylppusrewopV5

desutonfi

)

CS

rotallicsolatsyrcrofWOLdna,edomtupnikcolclanretxerofHGIH.tcelesedomtupnikcolC

sikcolcrotallicsolatsyrc,)WOLTSR(tesergniruD.tuptuolangisnoitazinorhcnysetisopmoC

oN.tuptuosikcolclexip,)WOLTSR(tesergniruD.tuptuokcehclangisnoitazinorhcnyslanretxE

esu,desutonsitiucricnoitarapescnyslanretnifI.tupnitiucricnoitarapesnoitazinorhcnyS

cnyslanretnifilangisNICNYSstuptuO.tuptuotiucricnoitarapesnoitazinorhcnysetisopmoC

Specifications

Absolute Maximum Ratings

retemaraPlobmySsnoitidnoCsgnitaRtinU

V

,

egatlovylppuS

egatlovtupnIV

egatlovtuptuOV

noitapissidrewopelbawollAP

erutarepmetgnitarepOrpoT – 07+ot03

erutarepmetegarotSgtsT – 521+ot04

Reommended Operating Conditions at Ta = 25˚C

retemaraPlobmySsnoitidnoCsgnitaRtinU

egatlovylppuscigoLV

egatlovylppusgolanAV

egnaregatlovylppuscigoLV

egnaregatlovylppusgolanAV

Pin Assignment

1DD

V

2DD

I

O

Ta = 25˚C

D

1DD
2DD
1DD
2DD

VSS– Vot3.0

VSS– Vot3.0
VSS– Vot3.0

0.7+

SS

DD
DD

V72.1(ot5.4

V

3.0+

V

3.0+

V

053Wm

˚C
˚C

0.5V

0.5V

5.5ot5.4V
)V

1DD

No.4359–3/12

LC74721, 74721M

Electrical Characteristics at Ta = –30 to +70˚C, V

retemaraPlobmySsnoitidnoC

V

1DD

V

2DD

tnerructupni

egatlovtupni

egatlov

egatlovtupni

egatlovtupniNIXV

egatlovtuptuo

egatlovtuptuo

tnerrucylppuscigolI

tnerrucylppusgolanaI

tnerrucegakaeltupniNIVCI

tnerrucegakaeltuptuoTUOVCI

level-wolNICSOdna3LRTC,2LRTC,1LRTC

tnerructupnilevel-hgih3LRTCdna

egatlovtupnioedivetisopmocNIVCV

egatlovcnysTUOVCV

egatlovlatsedepTUOVCV

egatlovredrobTUOVCV

egatlovretcarahcTUOVCV

ycneuqerfrotallicsoTUOXdnaNIXf

2LRTC,NIPES,1LRTC,KLCS,NIS,SC,TSR

egatlovtupnilevel-wolKLCSdnaNIS,SC,TSRV

level-wolNIPESdna3LRTC,2LRTC,1LRTC

tupnilevel-hgihKLCSdnaNIS,SC,TSR

level-hgihNIPESdna3LRTC,2LRTC,1LRTC

egatlovtupnioedivetisopmocNICNYSV

level-wolTUOPESdnaCNYS,TUONYSC

level-hgihTUOPESdnaCNYS,TUONYSC

egatlovtsrubroloclevel-wolTUOVCV

egatlovtsrubroloclevel-hgihTUOVCV

egatlovrolocdnuorgkcablevel-wolTUOVCV

egatlovrolocdnuorgkcablevel-hgihTUOVCV

ecnatsiserpu-llupKLCSdnaNIS,SC,TSRR

ycneuqerfrotallicsoTUOCSOdnaNICSOf

1DD

V

2DD
1L
2L

I

V=IV

LI

I

V=IV

HI

1LI

V

2LI

V

1HI

V

2HI

1I
2I
3I

V

V

V

1LO

V

1HO

NS

DP

LBC

HBC

LSR

HSR

KB

AHC

UP

1CSO

2CSO

Notes

1. CV

2. CV

OUT
OUT

at V
at V

DD1
DD1

= V
= V

= 5V, 0.8V sync level

DD2

= 5V, 1.0V sync level

DD2

= 5V, unless otherwise noted

DD1

sgnitaR

nimpytxam

rotallicsoCLzHM8

V5=02Am

2DD

1SS

1DD

kaepotkaepderusaeM0.2p-pV
kaepotkaepderusaeM0.2

f,tupnikcolclanretxE

f2=

NI

5.4=,VI

1DD

5.4=,VIHO=– Am0.15.3V

1DD

.1etoneeS07.028.0
.2etoneeS78.099.0
.1etoneeS72.193.115.1V
.2etoneeS44.165.186.1V
.1etoneeS89.001.122.1V
.2etoneeS51.172.193.1V
.1etoneeS85.107.128.1V
.2etoneeS47.168.189.1V
.1etoneeS24.145.166.1V
.2etoneeS95.117.138.1V
.1etoneeS49.160.281.2V
.2etoneeS11.232.253.2V
.1etoneeS05.126.147.1V
.2etoneeS86.108.129.1V
.1etoneeS16.237.258.2V
.2etoneeS08.229.240.3V

f2(CSTN

)951.7zHM

CS

f4(CSTN

)813.41zHM

CS

f4(M-LAP

)203.41zHM

CS
rotallicsoCL5

Am0.1=

LO

f4ro

CS

,rotallicsolatsyrczHM951.7,nepostuptuollA

– 0.1Aµ

VSS–

3.0

VSS–

3.0

V8.0

1DD

V7.0

1DD

CS

sniptasgnitteslanoitponosdnepeD5205

02.0

V2.0
V3.0

V

1DD

V

1DD

51Am

1
1

0.1Aµ

1DD
1DD

3.0+

3.0+

5.2

0.5

0.1

49.0

11.1

09

01

tinU

Aµ
Aµ

V
V

V

V

p-pV
p-pV

V

V
V

kΩ

zHM

Timing Characteristics at Ta = –30 to +75˚C, V

retemaraPlobmySsnoitidnoC

htdiwesluptupniKLCSt

htdiwesluptupnilevel-hgihSCt

emitputestupniSCt

emitputestupniatadNISt

emitdlohtupniSCt

emitdlohtupniatadNISt

emitetirwdrowatadtib-8t

emitetirwatadMARt

)KLCS(W

)SC(W

)SC(US

)NIS(US

)SC(H

)NIS(H

DROW

TW

= 5 ±0.5V

DD1

sgnitaR

nimpytxam

002sn

1sµ
002sn
002sn
2sµ

002sn

2.4sµ

1sµ

No.4359–4/12

tinU

LC74721, 74721M

Serial Data Input Timing

Display Control Features and Characteristics

Display Control Command Structure

The display control commands, COMMAND0 to COM­MAND5, are shifted in 8-bit serial units. The first byte of a
command consists of an identification code and data. The
second byte consists of data only . Once the command iden­tification code in byte 1 has been written, it is saved until

Display Control Command Data

etybtsriFetybdnoceS

dnammoC

7654321076543210

0ODNAMMOC

1ODNAMMOC

dnammoc

2ODNAMMOC

dnammoc

3ODNAMMOC

dnammoc

4ODNAMMOC

dnammoc

5ODNAMMOC

dnammocgnittes

etirw)MARV(yromemyalpsiD

dnammocgnittessserdda

gnittesezisretcarahc

gnittesezisretcarahc

gnitteslortnocyalpsiD

1000 3V2V1V0V 000 4H3H2H1H0H

etirwatadretcarahcyalpsiD

10010000 ta0 5C4C3C2C1C0C

dnanoitisopyalpsidlacitreV

1010 12SV02SV11SV01SV0SF5PV4PV3PV2PV1PV0PV

dnanoitisopyalpsidlatnoziroH

1011 12SH02SH11SH01SH0CL5PH4PH3PH2PH1PH0PH

1100

lortnoclangisnoitazinorhcnyS

1101 1HP0HPLCBTNI02NR1NR0NR3NS2NS1NS0NS

edocdnammoCatadgnirotsretsigerroataDatadgnirotsretsigerroataD

TST

DOM

the next time the first byte is written. If COMMAND1 is
written, the display character write mode begins and the
first byte does not change. When CS is HIGH, COM­MAND0 is set.

CSO

BC

PTS

SYS

00 NONGE1KB0KBVR

TSR

PSD

NO

No.4359–5/12

LC74721, 74721M

COMMAND0: Display Memory Write Address Setting Command
COMMAND0: first byte

ot0AD

7AD

00V

11V

22V

33V
40

50
60
71

emanretsigeR

sutatSnoitcnuF
0
1
0
1
0

1
0
1

COMMAND0: second byte

ot0AD

7AD

00H

11H

22H

33H

44H
50

60
70 tibnoitacifitnedietybdnoceS

emanretsigeR

sutatSnoitcnuF
0
1
0
1
0

1
0
1
0
1

Note

On system reset with RST, the status of all registers is set to 0.

stnetnoCretsigeR

H9ot0sserddayromemyalpsiD

edocnoitacifitnedi0DNAMMOC

stnetnoCretsigeR

H71ot0sserddayromemyalpsiD

skrameR

skrameR

COMMAND1: Display Character Data Write Command
COMMAND1: first byte

ot0AD

7AD

00
10
20

30
41
50
60
71

emanretsigeR

sutatSnoitcnuF

edocnoitacifitnedi1DNAMMOC

stnetnoCretsigeR

skrameR

yalpsid,tupnisidnammocretfA

tessiedometirwatadretcarahc

HGIHtessiSClitnu

No.4359–6/12

LC74721, 74721M

COMMAND1: second byte

ot0AD

7AD

00C

11C

22C

33C

44C

55C
60
7ta

emanretsigeR

sutatSnoitcnuF
0
1
0
1
0

1
0
1
0
1
0
1

0FFOetubirttaretcarahC
1NOetubirttaretcarahC

HF3ot0edocretcarahC

Note

On system reset with RST, the status of all registers is set to 0.

COMMAND2: Vertical Display Position and Character Size Setting Command
COMMAND2: first byte

ot0AD

7AD

001SV

111SV

202SV

312SV

40
51
60
71

emanretsigeR

sutatSnoitcnuF
0

1
0
1
0
1
0
1

11SV01SVthgieH
00 lexip/H1
01 lexip/H2
10 lexip/H3
11 lexip/H1

12SV02SVthgieH
00 lexip/H1
01 lexip/H2
10 lexip/H3
11 lexip/H1

stnetnoCretsigeR

stnetnoCretsigeR

edocnoitacifitnedi2DNAMMOC

skrameR

skrameR

ezisretcarahclacitrevwortsriF

ezisretcarahclacitrevwordnoceS

No.4359–7/12

COMMAND2: second byte

ot0AD

7AD

00PV

emanretsigeR

LC74721, 74721M

sutatSnoitcnuF

0

1

stnetnoCretsigeR

ybdenimretednoitisopetanidrooclacitrevlaitinI

skrameR

11PV

22PV

33PV

44PV

55PV

6SF
70 tibnoitacifitnedietybdnoceS

0

1
0
1
0
1
0
1
0
1

0f2
1f4

doirepeslupnoitazinorhcnyslatnozirohehtsiHerehw

CS
CS

ycneuqerfrotallicsolatsyrc
ycneuqerfrotallicsolatsyrc

Note

On system reset with RST, the status of all registers is set to 0.

COMMAND3: Horizontal Display Position and Character Size Setting Command
COMMAND3: first byte

ot0AD

7AD

001SH

111SH

202SH

312SH

41
51
60
71

emanretsigeR

sutatSnoitcnuF

0
1
0
1
0
1
0
1

11SH01SHhtdiW
00 T1
01 T2
10 T3
11 T1

12SH02SHhtdiW
00 T1
01 T2
10 T3
11 T1

stnetnoCretsigeR

lexip/

C

lexip/

C

lexip/

C

lexip/

C

lexip/

C

lexip/

C

lexip/

C

lexip/

C

edocnoitacifitnedi3DNAMMOC

etanidrooclacitrevlaitiniehT

ot0PV,stib6nitessinoitisop

,0PV,bslehterehw,5PV

H2otsdnopserroc

skrameR

ezisretcarahclatnozirohwortsriF

ezis

retcarahclatnozirohwordnoceS

No.4359–8/12

LC74721, 74721M

COMMAND3: second byte

ot0AD

7AD

00PH

11PH

22PH

33PH

44PH

55PH

6CL

70 tibnoitacifitnedietybdnoceS

Note

On system reset with RST, the status of all registers is set to 0.

COMMAND4: Display Control Setting Command
COMMAND4: first byte

ot0AD

7AD

0TSRSYS

1PTSCSO

2BC

3DOMTST
40

50
61
71

emanretsigeR

emanretsigeR

sutatSnoitcnuF

0

1

0

1

0

1

0

1

0

1

0

1

0kcolctodrotallicsoCL

1kcolctodrotallicsolatsyrC

sutatSnoitcnuF
0
1FFOyalpsidehtsnrutdnasretsigerllasteseR
0elbasidpotsrotallicsoCLdnalatsyrC
1elbanepotsyrtiucricrotallicsoCLdnalatsyrC
0tuptuosilangistsrubroloC

1tuptuotonsilangistsrubroloC
0edomgnitarepolamroN
1edomtseT

Terehw

C

doirep

edocnoitacifitnedi4DNAMMOC

stnetnoCretsigeR

ybnevigsinoitisopetanidrooclatnozirohlaitiniehT

noitallicsoedomnoitarepoTUOCSOdnaNICSOehtsi

noitcerid

stnetnoCretsigeR

yalpsid

skrameR

etanidrooclatnozirohlaitiniehT

ot0PH,stib6nitessinoitisop

,0PH,bslehterehw,5PH

T2otsdnopserroc

C

ehtrofdesukcolctodehtstceleS

esrevsnartyalpsidretcarahc

skrameR

WOLseogSC

nehwsruccooslatesermetsysA

retcarahcedomcnyslanretxE

ylnoHGIHsiLCBnehW

detcelesebtondluohsedomtseT

noitarepolamrongnirud

COMMAND4: second byte

ot0AD

7AD

0NOPSD

1VR

20KB

31KB

4GE

5NON
60

70 tibnoitacifitnedietybdnoceS

emanretsigeR

sutatSnoitcnuF
0FFOyalpsidretcarahC
1NOyalpsidretcarahC
0FFOsretcarahcesrevnI
1NOsretcarahcesrevnI
0FFOgniknilB

1NOgniknilB
0s5.0doirepgniknilB

1s0.1doirepgniknilB
0FFOredroB
1NOredroB
0dleif/H5.262,gninnacsdecalretnI
1dleif/H362,gninnacsdecalretni-noN

Note

On system reset with RST, the status of all registers is set to 0.

stnetnoCretsigeR

gnihctiws

skrameR

,sretcarahcesrevnigniknilbnehW

esrevnidnalamron

neewtebetanretlasretcarahc

doirepgniknilbstceleS

decalretni-non/decalretnI

No.4359–9/12

LC74721, 74721M

COMMAND5: Synchronization Signal Control Setting Command
COMMAND5: first byte

ot0AD

7AD

0TNI

1LCB

20HP

31HP

41
50
61
71

emanretsigeR

sutatSnoitcnuF

0noitazinorhcnyslanretxE

1noitazinorhcnyslanretnI

0elbaliavarolocdnuorgkcaB

1)tesylnoleveldnuorgkcab(elbaliavatonrolocdnuorgkcaB

0

1

0

1

1HP0HPesahps'rolocdnuorgkcaB
00
01
10 3π 2/
11 esahpnI

COMMAND5: second byte

ot0AD

7AD

00NS

11NS

22NS

33NS

40NR

51NR

62NR
70 tibnoitacifitnedietybdnoceS

emanretsigeR

sutatSnoitcnuF

0

1

0

1

0

1

0

1

0

1

0

1

0

1

3NS2NS1NS0NSycneuqerfnoitceteD
0000 noitcetedoN
0001 semit23
0010 semit46
0100 semit821
1000 semit652

2NR1NR0NRycneuqerfnoitceteD
000 semit0
001 semit4
010 semit8
100 semit61

stnetnoCretsigeR

π 2/

π

edocnoitacifitnedi5DNAMMOC

stnetnoCretsigeR

skrameR

dnalanretxeneewtebsehctiwS

noitazinorhcnyslanretni

noitazinorhcnys

sepyt4eraereht

lanretnihtiwelbaliavaylnO

,edomM-LAPnI.noitcelesesahP

dnuorgkcabenoylnosiereht

,esiwrehtO.)kcalb-eulb(roloc

skrameR

noitcetedlangiscnyslanretxE

ehtnehwsenimreteD.lortnoc

.FFOotNOmorfseoglangis

ni,doirepgnilpmasehtstceleS

langiscnyslatnozirohehtfostinu

cnysehthcihwrof,)H1(elcyc

.detcetedebtonnacdnaseunitnoc

noitcetedlangiscnyslanretxE

ehtnehwsenimreteD.lortnoc

.NOotFFOmorfseoglangis

ni,doirepgnilpmasehtstceleS

langiscnyslatnozirohehtfostinu

cnysehthcihwrof,)H1(elcyc

.detcetedebnacdnaseunitnoc

Note

On system reset with RST, the status of all registers is set to 0.

No.4359–10/12

LC74721, 74721M

Display Configuration

The display is 24 characters by 10 rows large. Up to 240
characters can be displayed, unless the character size is
expanded. The display memory address is set as a row ad-

dress in the range 0 to 9 and a column address in the range
0 to 23.

Composite Video Output
CVOUT Output Waveform (V

DD2

=5.00V)

No.4359–11/12

LC74721, 74721M

levelegatlovtuptuOlobmyS)V(cnysV8.0taegatlovtuptuO)V(cnysV0.1taegatlovtuptuO

retcarahCV

rolocdnuorgkcablevel-hgiHV

tsrubroloclevel-hgiHV

rolocdnuorgkcablevel-woLV

redroBV

latsedePV

tsrubroloclevel-woLV

cnySV

AHC
HSR
HBC

LSR
KB
DP

LBC
NS

Note

= 5.00V

V

DD2

37.229.2

60.232.2

07.168.1

45.117.1

26.108.1

93.165.1

01.172.1

28.099.0

Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer's
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer's products or equipment.

SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.

In the event that any or all SANYO products(including technical data,services) described or
contained herein are controlled under any of applicable local export control laws and regulations,
such products must not be exported without obtaining the export license from the authorities
concerned in accordance with the above law.

No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co. , Ltd.

Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO product that you intend to use.

Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.

This catalog provides information as of August, 2001. Specifications and information herein are subject to
change without notice.

PS No.4359–12/12