Sanyo LC7232-8291 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

1-Chip PLL + Controller

Ordering number:ENN*3673

LC7232-8291

SANYO Electric Co.,Ltd. Semiconductor Company

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

Preliminary
Overview

The LC7232-8291 is a single-chip microcontroller that is
best suited for car electronics tuning applications. It includes
the internal PLL (Phase Locked Loop) circuitry that can be
used all over the world, LCD driver circuitry, remote con-

trol function and anti-theft (or thief proof) function.

Features

• On-chipped infrared remote control receiver circuit :
Transmitter IC=LC7461M (remote non-wired control and
wired control).

• On-chipped ANTI-THEFT function.

• Preset Memory function : 36 channels (Max.)=
(FM1+FM2+FM3+VF+MW (MW1)+LM (MW2))×6
(with the last channel storage).

• Auto Preset Memory function : Based on the intensities
of electric fields.

• Radio monitor function.

• CD function (Keys, IN and OUT).

• Tape function : DIRECTION display on/off by the FF
and REW input signals.

• Abundant tape DOUBLE FUNCTION KEY selections :
Independent 2 keys added.

• On-chipped DKcount function.

• Preset Memory write modes : 2

• Tape character display function.

• Power Key.

• Diode matrix selections : 30

• W orld-wide version.

Package Dimensions

unit:mm

3044B-QIP80A

[LC7232-8291]

20.0

14.0

3.0

1.0

0.35

0.8

1.0

26.0

20.0

0.8

0.8

64

65

80

1

0.35

22.6

3.0

0.8

41

24

SANYO : QIP80A

40

25

1.7

0.15

2.45max

1.7

16.6

1.7

2.15

11502TN (KT)/D250JN, JK No.3673–1/33

Pin Assignment

LC7232-8291

No.3673–2/33

Frequencies

aerAdnaB

.A.S.U

EPORUE

NAPAJ

-IDUAS

AIBALA

-HTUOS

ACIRFA

-TSAE
EPORUE

LC7232-8291

egnarycneuqerF

)zHk:MAzHM:MF(

aMF

aWM

aMF

bWM

aMF

cWM

aMF

dWM

bMF

aWM

bMF

bWM

bMF

cWM

bMF

dWM

cMF

eWM

aWL
cMF

cWM

aWL
dMF

eWM

aWL
dMF

cWM

aWL
cMF

eWM

bWL
cMF

cWM

bWL
dMF

eWM

bWL
dMF

cWM

bWL
eMF

fWM

bMF

gWM

fMF

gWM

gMF

hWM

9.701–5.78

0271–035

9.701–5.78

0261–035

9.701–5.78

0261–135

9.701–5.78

9171–135

0.801–5.78

0271–035

0.801–5.78

0261–035

0.801–5.78

0261–135

0.801–5.78

9171–135

0.801–5.78

0261–225

182–351

0.801–5.78

0261–135

182–351

0.801–5.78

0261–225

182–351

0.801–5.78

0261–135

182–351

0.801–5.78

0261–225

092–641

0.801–5.78

0261–135

092–641

0.801–5.78

0261–225

092–641

0.801

–5.78

0261–135

092–641

0.09–0.67
9261–225

0.801

–5.78

2061–135

0.801–5.78

2061–135

0.801–0.46

0261–225

.ferF

)zHk(

05
01

05
01

050027.01

99

050027.01

99

05
01

05
01

05

9

05

9

52
9
1

52
9
1

9
1

9
1

52
9
1

52
9
1

9
1

9
1

05
9

05
9

05
9

52
9

002

01

002

01

001

01

001

01

001

9

001

9

05

9

05

9

5.21

52

9

5.21

52

9

05

9

05

9

5.21

52

9

5.21

52

9

001

9

001

9

001

9

05

9

FI

PETS

)zHk(

)9(1

)9(1

)9(1

)9(1

)9(1

)9(1

)9(1

)9(1

)zHM(MF

)zHk(MA

7.01

054

7.01

054

054

054

7.01

054

7.01

054

7.01

054

7.01

054

7.01
954/054

↑

7.01
954/054

↑

7.01
954/054

↑

7.01
954/054

↑

7.01
954/054

↑

7.01
954/054

↑

7.01
954/054

↑

7.01
954/054

↑

7.01–

054

7.01–

054

7.01–

054

7.01

054

tnuocFI
ecnarelot

)zHk(

2B1B0B2WL1WLTFIHS

01±

3± 00000 0

01±

3± 00000 1

01±

3± 00001 0

01±

3± 00001 1

01±

3± 00010 0

01±

3± 00010 1

01±

3± 00011 0

01±

3± 00011 1

01±

3±

6.0±

01±

3±

6.0±

01±

3±

6.0±

01±

3±

6.0±

01±

3±

6.0±

01±

3±

6.0±

01±

3±

6.0±

01±

3±

6.0±

01±

3± 10100 0

01±

3± 10100 1

01±

3± 10101 0

01±

3± 10110 0

001000

010000

011000

100000

001010

010010

011010

100010

xirtamedoiD

)ffo:0no:1(

1/0

1

1/0

1

1/0

1

1/0

1

1/0

0

1/0

0

1/0

0

1/0

0

Notes :

1. In the Europe area, the diode matrix ‘SHIFT’ is used to select the desired IF frequency.

2. The (9)s of the STEP are the STEP values that will be effective with the IF count inactive in the Auto Tuning mode.

Specifications

Absolute Maximum Ratings at Ta = 25˚C, VSS=0V

retemaraPlobmySsnoitidnoCsgnitaRtinU

egatlovylppuSV

egatlovtupnI

egatlovtuptuO

tnerructuptuO

noitapissidrewopelbawollAxamdP 004Wm

erutarepmetgnitarepOrpoT 58+ot04–

erutarepmetegarotSgtsT 521+ot04–

xam 5.6+ot3.0–V

DD

VNI1PUKCAB,retemS,SER,TNI,DLOH 31+ot3.0–V
VNI2VnahtrehtotupnI

V

1MF/MA,C,T,R 51+ot3.0–V

TUO

V

2VnahtrehtotuptuO

TUO

I

111Tot8T,MF/MA,C,T,R 5ot0Am

TUO

I

282Sot1S,TS/OM,TNCFI,REWOP,PEEB,41ot21T 3ot0Am

TUO

I

37Tot0T 1ot0Am

TUO

Ta=–40 to +85˚C

1Vot3.0–

NI

1Vot3.0–

TUO

3.0+V

DD

3.0+V

DD

˚C
˚C

No.3673–3/33

LC7232-8291

Recommended Operating Conditions at Ta = –40 to +85˚C, VDD=3.5 to 5.5V

retemaraPlobmySsnoitidnoC

VDD1noitarepoLLP,UPC5.45.5V

egatlovylppuS

egatlovlevel-hgihtupnI

egatlovlevel-woltupnI

ycneuqerftupnI

edutilpmatupnI

egnaregatlovtupnIV

VDD2noitarepoUPC5.35.5V
VDD3dlohyromeM3.15.5V

VHI1RID,OERETS,DS,NINOCOMER
VHI2DLOH,TNI,SER
VHI3PUKCAB5.20.8V
VHI43Kot0K

VHI5

TS/OM

VHI6RTCL

VLI1RID,OERETS,DS,NINOCOMER0
VLI2TNI,SER0
VLI3PUKCAB03.1V
VLI43Kot0K0

VLI5

TS/OM
VLI6RTCL0
VLI7DLOH0

fNI1V,NIX
fNI2V,NIMF
fNI3V,)WL,WM(NIMA
fNI4V,)FIMA,FIMF(RTCH

fNI5

V,1DD10.45.40.5zHM

NI

V,2DD101031zHM

NI

V:FIMARTCL

V:gisKD

V,3DD15.001zHM

NI

V,4DD14.021zHM

NI

V,3

NI
HI

,1

DD

V,6

V,6DD1

LI

VNI1NIX05.05.1smrV
VNI2NIMF01.05.1smrV
VNI3NIMA51.05.1smrV
VNI4RTCH01.05.1smrV

5retemS0V

NI

sgnitaR

nimpytxam

V7.0

DD

V8.0

DD

V6.0

,ETUMA,TNCFI,REWOP,PEEB,41Tot21T

,ETUMA,TNCFI,REWOP,PEEB,41Tot21T

DD

V7.0

DD

V8.0

DD

0

V
V
V

V3.0
V2.0

V2.0
V3.0
V2.0

V4.0

tinU

0.8V

0.8V

V

DD

V

DD

V

DD

V

DD

V

DD

V

DD

V

DD

V

DD

V

DD

1k005zH

V

DD

Electrical Characteristics (in line with the recommended operating conditions)

retemaraPlobmySsnoitidnoC

egatlovsiseretsyHV

H

htdiwesluptcejeRJERPPUKCAB 05sµ

egatlovtcetednwod-rewoPV

TED

IHI1

tnerruclevel-hgihtupnI

IHI2
IHI3V,NIX

IHI4V,RTCL,RTCH,NIMA,NIMF
IHI4V,3Kot0K
I

1LI

I

tnerruclevel-woltupnI

egatlovgnitaolftupnIV

2LI

I

3LI

I

4LI

FI

rotsisernwod-lluPDPR3Kot0K57001002kΩ

I

1V,2OE,1OE

HFFO

tnerrucegakaelffolevel-hgihtuptuO

tnerrucegakaelffolevel-woltuptuO

I

2

HFFO

I

3V,MF/MA,C,T,R

HFFO

I

1V,2OE,1OE

LFFO

I

2

LFFO

TNI,SERV1.0

V,RID,OERETS,NINOCOMER

I

V,ffo-tuptuoETUMA

IV=DD

IV=DD

V0.5=0.20.551Aµ

IV=DD

V0.5=05Aµ
VIV=
VIV=
VIV=
VIV=

IV=DD
SS
SS
SS
SS

3Kot0K

OV=DD

V,82Sot52S,ETUMA

OV=DD

V31=0.5Aµ

O

OV=SS

V,ETUMA

OV=SS

V5.5=

sgnitaR

nimpytxam

DD

7.20.33.3V

,DS,PUKCAB,retemS,SER,DLOH,TNI

,TS/OM,TNCFI,REWOP,PEEB,41Tot21T

0.3Aµ

0.3Aµ

V0.5=0.40103Aµ

0.3Aµ

0.3Aµ

0.20.551Aµ

0.40103Aµ

V50.0

DD

10.001An

,TS/OM,TNCFI,REWOP,PEEB,41Tot0T

0.3Aµ

10.001An

,TS/OM,TNCFI,REWOP,PEEB,41Tot0T

0.3Aµ

Continued on next page.

tinU

V

V

No.3673–4/33

Continued from preceding page.

retemaraPlobmySsnoitidnoC

egatlovlevel-hgihtuptuO

egatlovlevel-woltuptuO

rorrenoisrevnocDAE

tnerrucylppuS

LC7232-8291

VHO1I,7Tot0T
VHO2
VHO3I,2OE,1OE

VHO4I,TUOX
VHO5I,82Sot1S
VHO6I,11Tot8T
VHO7I,2MOC,1MOC
VLO1I,7Tot0T

VLO2
VHO3I,2OE,1OE

VHO4I,TUOX
VHO5I,82Sot1S
VHO6I,11Tot8T
VHO7I,2MOC,1MOC

VHO8I,MF/MA,C,T,R

egatlovlevel-etaidemretnituptuOV

M

VV

IDD1VDDf,1

V

IDD2

IDD3

DD

V

DD

V

DD

Am1=V

O

I,82Sot52S,ETUMA

Am1=

O

Aµ005=V

O

Aµ002=V

O

O

O

V,retemS

NI

).1.giFeeS

Am1.0–=V

O

Am5=V

O

O

O

O

DD

Aµ02=V

O

Am1=5.00.10.2V

I,82Sot52S,ETUMA

Am1=

O

Aµ005=0.1V

Aµ002=0.1V

Am1.0=0.1V

Am5=0.1V

Aµ02=0.1V

O

Am5=

O

V,2MOC,1MOC

12/1–2/1+BSL

I,V5=

DD

zHM031=5102Am

Aµ02=0.25.20.3V

O

.edomDLOHehtni(potsLLP,2

52=aT.potsCSO.V5.5=°.C

).2.giFeeS.edomPUKCABehtni(

52=aT.potsCSO.V5.2=°.C

).2.giFeeS.edomPUKCABehtni(

sgnitaR

nimpytxam

0.2–VDD0.1–VDD5.0–V

DD

,TS/OM,TNCFI,REWOP,PEEB,41Tot21T

VDD0.1–V

0.1–V

DD

0.1–V

DD

0.1–V

DD

0.1–V

DD

7.0–VDD5.0–

DD

,TS/OM,TNCFI,REWOP,PEEB,41Tot21T

57.0

051( Ω)

VDD53.0–

004( Ω)

7.0Am

tinU

V

0.1V

0.2

V

5Aµ

1Aµ

Note : T0 to T4, BEEP, POWER, IFCNT, AMUTE, MO/ST, AM/FM,

R, T, C, S1 to S28, COM1 and COM2=‘Open’

Fig. 1 IDD2 test circuit in the HOLD mode

Note : T0 to T4, BEEP, POWER, IFCNT, AMUTE, MO/ST, AM/FM,

R, T, C, S1 to S28, COM1 and COM2=‘Open’

Fig. 2 IDD3 test circuit in the BACK UP mode

No.3673–5/33

LC7232-8291

Key and Diode Matrix

NI

TUO0K1K2K3K

0TDUOL1M2M3M

1TTS/OM

2TFVNWODPUPUNACS

3TDNABNWODKEESPUKEESDC

4TCOL

5TYALPSIDNOMRREWOPEM

6TEPATNIDCFFWER

7TKCOLCTCELESDCNIKSNIKD

8T

)LTM(

9T

)SPA(

01T

)1RN(

*

0B1B2BTFIHSFI

0BMF1BMF1WL2WL

CRNEPYTYROMEMWSREWOPYTIROIRP

4M5M6M

SPARNLTM

AHAMSP

SPARNMEMA

11T

)2RN/COL(

21T

)TUOFV(

31T

)DUOL(

41T

)TUODC(

0TNUOCFI1TNUOCFINOLOCENUTEROTUAFV

ELBUOD

0NOITCNUF

NOCOMERTNUOCKDTFEHTITNAFFOREWOP

DNIEPAT0YEKF1YEKFYALPSIDRID

ELBUOD

1NOITCNUF

ELBUOD

2NOITCNUF

TCELESFV

NOKCOLC

No.3673–6/33

LC7232-8291

Pin Description

niP

.oN

1NIXI–– .rotallicso)latsyrC(lat'XzHk5.4htiwdetcennoC –
22TSETI–– .dnuorgnommocehtotdednuorG –

33GPININOCOMER

42GPIDSH otedomgninutotuaehtnidesulangistupninasilangissihT

51GPIOERETSL DLOHehtretfaretalsm005detavitcaeblliwedomOIDARehT

60GPIRIDL/HsihtfI.edomEPATgnirud'noitcerid'ehtetacidniotdesusisihT

73HPORL epyt)niarDnepO(DOehtsahnipsihT.tcelesecruosoidaR

82HPOTL tuptuoepyt)niarDnepO(DOehtsahnipsihT.tcelesecruosepaT

91HPOCL tuptuoepyt)niarDnepO(DOehtsahnipsihT.tcelesecruosDC

010HPOMF/MAL/Hlevel-L:dnabMAroMFehtgnitcelesrofdesulangistuptuO

113FPOTS/OMH FVehtgnidulcni(edomMFOIDARehtniyalpsidTSehtslortnoC

212FPOETUMAL nipDLOHehtfi'H'eblliwnipsihT.tuptuolortnocetumoiduA

311FPOTNCFIH 'H'eblliwlangissihT.reffubtnuocFIroflangislortnocFFO-NO

410FPOREWOPH siyekREWOPehtnehw(norewopehtta'H'eblliwtuptuosihT

513EPOPEEBH siyekdilavehtfism05tuobarofevitcaemoceblliwlangissihT

612EPO

711EPODUOLH rof'L'.NOyalpsid'DUOL'ehtrof'H':yalpsid'DUOL'ehtslortnoC

810EPO

913DPOCOL

022DPO1RN

emaNO/ItnemngissA

EPAT

2RNH yalpsidtigidHCteserp('C'ehtdnayalpsid'RND'ehtslortnoC

TNOCNACSH ehtnehwylno'H'eblliwlangissihT.stuptuonacsxirtamedoiD

MRALAH sniamerlangisNIKSehtnehwevitceffeemoceblliwlangissihT

TUODCH .tuptuotcelesecruosrewopDC

41TH.tuonacsedoiD

31TH.tuonacsedoiD

TUOFVH .tuptuolortnocFV

WL/WMH/L'H':WL'L':WMtuoolrtnoctcelesWLroWM

21TH.tuonacsedoiD

11TH.tuonacsedoiD

01TH.tuonacsedoiD

evitcA

cigol

LM1647CLehtrofdesudna)wolevitca(nipTNIehtotdetcennoC

H

H

noitpircsedlanoitcnuF

desuebnacnipsiht,desutonsiNOCOMERehtfI.tupnilangis

.deriuqertonsirotsisnartEPATXRMRTehT.tupniepaTrof

.deviecerneebsahycneuqerflennahcderisedehttahtetacidni

DLOHehtfinodenruteblliw'TS'ehT.)'H'(evitcanisemocebnip

ehT.sedomFVdnaMFehtniylnoevitcasemoceb)Levitca(nip

.'L'morf'H'ot

.nodenruteblliw'<'eht,'L'sileveltahtfI.no

.noitiddarotsiserpu-llupaseriuqerhcihw,tiucric

.noitiddarotsiserpu-llupaseriuqerhcihw,tiucric

.MA=tuptuolevel-H.MF=tuptuo

.detavitcasiedomDCroMAehtdna,)detceles

.norewop

.)detceleskcolc(evitcasemoceb

.woLniamerlliwlevelnipeht,sesacrehtonI.edom

.woLniamer

.)1='WSREWOP'XRMIDehthtiwdesserp

.0si"WSREWOP'XRMIDeht

.desserp

.)evitcani('H'=nipDLOHehthtiwnorewop

.'H'=DLOH

.'H'=DLOHehthtiwnorewopehttaylnoevitceffe

segnahcnipDLOHehtretfaretalsm005detavitcaeblliwyalpsid

denruteblliw'>'eht,0='DNIEPAT'XRMIDehthtiw'H'silevelnip

VDD.

.noitiddarotsiserpu-llupaseriuqerhcihw,tiucrictuptuo

sitiucricyalpsidTSeht,'L'situptuosihtfI.)rotinomOIDARdna

leveltuptuosihT.ffodenruteblliwyalpsidsti,'H'sitifI.detavitca

kcolc(evitcasemoceb)wolevitca(nipDLOHehtfi'L'eblliw

ni)noitcelesC-RND('1'='RN'XRMIDehtlliwyalpsid)retcarahc

.FFOyalpsid=tuptuo'L'.NOyalpsid=tuptuo'H':edomEPATeht

ehttadna'H'=nipDLOHhtiwevitceffesemoceblangistuptuosihT

hcraeSotuAehtnievitcasemoceblangisDSehtnehwylno

lliwlevelnipeht,sesacrehtonI.)'H'(evitcanisemocebnipDLOH

NIKSehT.edomFVehtnisdnoces03tuobarof)level-H(evitcani

langistuptuosihtfI.sm52tuobayrevedekcehcsilevellangis

dnadetratseblliwnoitarepo'hcraespuotua'eht,evitcasemoceb

roF.dekcehcyldetaepereblliw'L'=NIKSehtemitemasehtta

fievitceffesilangissihT.noitcesgnimitehtotrefer,sliatederom

ehttaylnoevitceffeeblliwlangissihT.FFOyalpsid'DUOL'eht

NACSehtroKEESehtnehwylnoevitcaeblliwlangisehT

ehtniNOyalpsid'COL'ehthtiwtuodeirracgniebsinoitarepo

eblliwlangissiht,detavitcanisiyalpsid'COL'ehtfI.edomOIDAR

ehthtiwnorewopehttaevitceffesilangistuptuoehttahtetoN.'L'

HCteserpehtdna'RN'ehtnehwylnoevitcaeblliwlangissihT

erayehtfI.edomEPATehtninodenrutera'B'yalpsidtigid

silangistuptuoehttahtetoN.'L'eblliwlangissiht,detavitcani

nipdesunU

gnildnah

noitcennoctceriD

Vehthtiw

.

DD

–

noitcennoctceriD

Vehthtiw

.

DD

noitcennoctceriD

Vehthtiw

nepO

nepO

nepO

nepO

nepO

nepO

nepO

nepO

nepO

nepO

nepO

nepO

nepO

nepO

ehtro

SS

Continued on next page.

No.3673–7/33

LC7232-8291

Continued from preceding page.

niP

.oN

121DPOSPAH ehtninodenrutsi'SPA'ehtnehwylnoevitcaeblliwlangissihT

220DPOLTMH ehtninodenrutsi'LTM'ehtnehwylnoevitcaeblliwlangissihT

323CPO7THtuonacsedoiDnepO
422CPO6THtuonacsyeKnepO
521CPO5THtuonacsyeKnepO
620CPO4THtuonacsyeKnepO
723BPO3THtuonacsyeKnepO
822BPO2THtuonacsyeKnepO
921BPO1THtuonacsyeKnepO
030BPO0THtuonacsyeKnepO
13V
233API3KH ninacsedoid,yeKnepO
332API2KH ninacsedoid,yeKnepO
431API1KH ninacsedoid,yeKnepO
530API0KH ninacsedoid,yeKnepO

niP

.oN

6382SO TSCOLnepO
7372SO RNDLTMnepO
8362SO SPADUOLnepO
9352SO MAMPnepO
0442SO a1NOMRnepO
1432SO d1c1nepO
2422SO e1g1nepO
3412SO f1b1nepO
4402SO a25nepO
5491SO d2c2nepO
6481SO e2g2nepO
7471SO f2b2nepO
8461SO a3pdnepO
9451SO d3c3nepO
0541SO e3g3nepO
1531SO f3b3nepO
2521SO a4nolocnepO
3511SO d4c4nepO
4501SO e4g4nepO
559SO f4b4nepO
658SO a5KSnepO
757SO d5c5nepO
856SO e5g5nepO
955SO TSb5nepO
064SO )2WM(WLFVnepO
163SO 3MF)1WM(WMnepO
262SO 1MF2MFnepO
361SO nepO
462MOCO revirdNOMMOCnepO
561MOCO revirdNOMMOCnepO

emaNO/ItnemngissA

9TH.tuonacsedoiD

8THtuonacsedoiD

DD

emaNO/I1MOC2MOC

–– – tupniegatlovylppusV5+nepO

evitcA

cigol

noitpircsedlanoitcnuF

nipdesunU

gnildnah

nepO

.'L'eblliwlangissiht,ffodenrutsiyalpsidtahtfI.edomEPAT

nepO

.'L'eblliwlangissiht,ffodenrutsiyalpsidtahtfI.edomEPAT

nipdesunU

gnildnah

No.3673–8/33

LC7232-8291

niP

.oN

66TNIININOCOMERL pu-llupaseriuqernipsihT.tupnilangisLORTNOCETOMER

76DLOHIDLOHL ehtybdedecerpsinipsihT.tupnitcetedFFO/NOREWOP

86SERI–L VehtotnoitcennoctceriD

86IDAIretemS– egnarehtnihtiwebdluohslangistupniehT:tupnilangisretemS

07RTCHIRTCH– pihcehthcaerdluohsslangistupniehT.stupniFIMAdnaFIMF

17RTCLIRTCL– hguorhtnippihcehthcaerdluohsslangistupniehT.stupniFIMA

emaNO/ItnemngissA

langisKD– .tupniTNUOCzH521langisKD

evitcA

cigol

noitpircsedlanoitcnuF

.deddayllanretxeebotrotsiser

:setatslanoitarepogniwollofehtsretnepihceht

I,edomDLOH(.seunitnoc

DD

I,edomPUKCAB(.detratseblliw

DD

.noitcennoctceriD

DD

Vehtotdetcennocebdluohs

DD

.1Mmorf)sgnimitDS(yllaitneuqes

.noitces

zHk6.0±WLzHk3±WM:ecnareloT

.tupniKDeht

))lacipyt(Am7.0=

)).xaM(Aµ5=

zHk6.0±WLzHk3±WMzHk01±MF:ecnareloT

,'L'ot'H'morfsegnahcnipehtfI.tiucricdesolcstiniWSREWOP

tnuockcolcehtdnapotstonseodnoitallicsoehT:kcolchtiW-

–

edomevasrewopehtdnaspotsnoitallicsoehT:kcolctuohtiW-

timilreppuehtsdeecxelangistupniehtfI.V2.3dnaV0neewteb

nipsihT.redividrotsiseraaivnippihcehthcaerdluohsti,)V2.3(

slangisserotspihcehtfinip

.)smr(Vm001nahtretaergebdnagnilpuocCAehthguorhtnip

'1dna,0TNUOCFI'XRMIDehtotrefer,noitamrofnieromroF

eromroF.)smr(Vm001nahtretaergebdnagnilpuocCAeht

.noitces'1dna,0TNUOCFI'XRMIDehtotrefer,noitamrofni

nafI.dnocesyrevedetratssitnemerusaemycneuqerfRTCLehT

stidnaworanisemiteerhtsm483rofderusaemsilangistupni

zH531dnazH511neewtebegnarehtnihtiwsiycneuqerf

sadeldnaheblliwlangistupnieht,emithcaeta)zH01±zH521(

nipdesunU

gnildnah

noitcennoctceriD

Vehthtiw

.nip

DD

Vehthtiw

.nip

DD

noitcennoctceriD

Vehthtiw

.nip

DD

noitcennoctceriD

Vehthtiw

.nip

SS

noitcennoctceriD

Vehthtiw

.nip

SS

V

V8.0=

27SNSINIKSL sinipsiht,noitcnufTFEHT-ITNAehttuohtiwnoitacilppaehtnI

PUKCABL ehT.noitcennocsedenilOMEMatcetedotdesusinipsihT

37V

DD

47NIMFI–– nippihcehthcaerdluohslangistupniehT.tupniCSOlacolMF

57NIMAI–– nippihcehthcaerdluohslangistupniehT.tupniCSOlacolMA

67V

SS

771OEO– – ssaPwoL(FPLehtotdetcennoceboT.tuptuorotarapmocesahP

872OEO– – ssaPwoL(FPLehtotdetcennoceboT.tuptuorotarapmocesahP

971TSETI–– .dnuorgnommocehtotdetcennoC–
08TUOXO– – .rotallicso)latsyrc(lat'XzHM5.4ehtotdetcennoC–

–– niptupniegatlovylppusV5+–

–– .dnuorgnommocehtotdednuorG–

HI

Vot

DD

DDV,LI

.nipsihtesustcudorp

V2.0ot0=

.

DD

.wolebdessucsidsa)wolevitca(

.nip2OEehtsaemaS.)retliF

.nip1OEehtsaemaS.)retliF

:segnarehtnihtiwebdluohsedutilpmatupniKDehT

yalpsidKSeht,'L'silevelnipehtfI.)wolevitca(NIKSehtsadesu

XRMRTehtsanoitcnufemasehtsahniptupnisihT.nodenrutsi

nipPUKCABehtsadesueboslanacnipsihT.'NIKS'tupni

tesEPYT)foorp-feihtro(TFEHT-ITNAehtdnaepytreword

.)smr(Vm001nahtretaergebdnagnilpuocCAehthguorht

.)smr(Vm001nahtretaergebdnagnilpuocCAehthguorht

nepO

nepO

noitcennoctceriD

Vehthtiw

.nip

DD

noitcennoctceriD

Vehthtiw

.nip

SS

noitcennoctceriD

Vehthtiw

.nip

SS

No.3673–9/33

LC7232-8291

Diode Matrix (DIMRX) Select 0 : without diode, 1 : with diode

xirtamedoiD

eman

KCOLC0 ehthtiwedomnoitarepokcolcehtniAm7.0eblliw)DDI(draintnerrucehT:noitcnufkcolcehtstceleS

TCELESDC

0B
1B
2B

TFIHSFI
1WL
2WL

0BMF
1BMF

CRN0 'RND'ehT.BRNnehtdna'ffo'foredroehtnisegnahcyalpsideht,yekRNehthtiW:CRNDehttcelestonseoD

no

ffo/

.)'L'=nipDLOH(

EPORUE-TSAE,EPORUE:rH42

1 ehtsretnepihcehtretfa).xaM(Aµ5eblliw)DDI(draintnerrucehT:noitcnufkcolcehttcelestonseoD

0 .'L'otteseblliwlevelnipTUODCehT.detibihniNIDC:noitcnufDCehttcelestonseoD
1 .'L'otsegnahcNIDCehtnehw'H'eblliwlevelnipTUODCehT.delbaneNIDC:noitcnufDCehtstceleS

–.elbatycneuqerfehteeS

1BMF0BMFslennahcteserpMF
00 )slennahc81(3MF,2MF,1MF
01 )slennahc21(2MF,1MF
10 )slennahc6(1MF
11 dengissatoN

.nodenrutoslasiyalpsid

1 .CRNnehtdnaBRN,'ffo'foredroehtnisegnahcyalpsideht,yekRNehthtiW:CRNDehtstceleS

noyeKffoBRNCRN

1tigiD

atadyalpsidffo"RND""RND"

sniP

1RNLHL
2RNLHH

noitpircseDlanoitcnuF

'FFO'=CCA

ACIRFA-HTUOS,AIBALA-IDUAS,NAPAJ,ASU:rH21

.)'L'=nipDLOH('FFO'=CCAehthtiwedomnoitarepo

1tigidyalpsiD

.edomhcaesetacidni

PUKCAB

YROMEM

EPYT

WSREWOP

YTIROIRP

0TNUOCFI00detcelesFIMFFIMA
1TNUOCFI10detcelestoNdednuorg)langisKD(

NOLOC0

FV

ENUTEROTUA

TCELESFV

NOCOMER

TNUOCKD0 FVXRMIDehthtiwylnoevitceffesisihT.detnuocebotdnanipRTCLehthcaerotslangisKDehtswollA

0 5.1nahteromrofdesserpebotsdeensyek6Mot1MfoynA:yekEMehttuohtiwetadpuyromemswollA

1 ehtretfasdnoces5nihtiwdesserpebotsdeensyek6Mot1MfoynA:yekEMehthtiwetadpuyromemswollA

0 .'noitcennocecruosrewopelpmaxE',11noitceseeS:nipDLOHehthtiwFFO/NOrewopehtslortnoC
1 .'noitcennocecruosrewopelpmaxE',11noitceseeS:yekREWOPehthtiwFFO/NOrewopehtslortnoC

0.ytiroirpnevigsiyalpsidkcolC

1.ytiroirpnevigerasyalpsidDCdnaEPAT,ycneuqerF

1zH1=elcycFFO-NO:yalpsidnolocehtffodnanosnruT
0 seunitnoc'H'=)wolevitca(NIKSehtfidetratseblliwedomenuterotuaehT:edomenuterotuaehtsetavitcA

1 evitca(NIKSehtfinevedetratsebtonlliwedomenuterotuaehT:edomenuterotuaehtetavitcatonseoD

0.edomFVehttcelestonseoD

1.edomFVehtstceleS

0.noitcnuflortnocetomeRehttcelestonseoD

1.noitcnuflortnocetomeRehtstceleS

1 siNIKDXRMRTehtelihwCIrotanimircsidKDehtedisnituodeirracsitnuocKDehT.tnuocKDehtselbasiD

.desutonsiyekEMehT.sdnoces

.desserpsiyekEM

1TNUOCFI

0TNUOCFIedomtnuocnipRTCHnipRTCLeton

.1=TCELES

.tupniCDrofdesu

* The SEEK operation jumps to the 9-kHz step mode from the manual mode.

.)0='KCOLC'XRMID(detcelesneebsah

edomKEESehtnI:WL

*

.zHk9=PETShtiw

:edomkcolcehtniyalpsidnolocehtnosnruT

.evitceffellitssituptuoMRALAehT.edomFVehtnisdnoces03

.evitceffetonsituptuoMRALAehT.edomFVehtnisdnoces03seunitnoc'H'=)wol

noitcnufkcolcehterehwesacehtotylnoseilppasihT

No.3673–10/33

LC7232-8291

xirtamedoiD

eman

ITNA

TFEHT

FFOREWOP

NOKCOLC

RID

YALPSID

DNIEPAT

ehtswollasihT

ruofdetacidni

ebotsretcarahc

foevitcepserri

edomkcolc

.noitceles

ELBUOD

0NOITCNUF
1NOITCNUF
2NOITCNUF

no

ffo/

0.noitcnufTFEHT-ITNAehtstceleS

1.noitcnufTFEHT-ITNAehttcelestonseoD

0.rewop-ffognirudyalpsidkcolcehtsetavitcanI

1.rewop-ffognirudyalpsidkcolcehtsetavitcA

0.noitacidninoitceridEPATehtselbanE

1.noitacidninoitceridEPATehtselbadiD
0

sahcus

1 tnemgesehtmorfstratsgniknalbtnemgesehT.wolebnwohssaredroehtniffodenrutsiyalpsidtnemges-7ehT

ehtnodeyalpsid

,lenaptnemges-7

.sworraeht

.)'L'='FF'XRMRTehthtiw(sm521=WER

.)'L'='FF'XRMRTehthtiw(sm521=WER

.sesoprupnworiehtevah

2NOITCNUF1NOITCNUF0NOITCNUF4M5M6M
000SPARNLTM
001–––
010–SPALTM
011––LTM
100––SPA
101––RN
110–RNLTM
111–SPARN

noitpircseDlanoitcnuF

.lenapyalpsidtnemges-7ehtnodeyalpsiderasretcarahcruofehT

foenO.s5.0sitnemgestxenehtottnemgesenomorfdeepsgniknalbehT.worradetniop-reppuehtybdekram
ybdetacidnisnoitceridehthtiwecnadroccaniseunitnocnoitarepoehtelihwffodenrutsyawlasistnemges7eht

,s5.0=YALP,edomnoitarepoDRAWROFehtnI:noitcelesedomyalpsiD
,edomnoitarepoESREVERehtnI.)'L'='FF'XRMRTehthtiw(sm521=FF

,s5.0=YALP,edomnoitarepoESREVERehtnI:noitcelesedomyalpsiD

,edomnoitarepoDRAWROFehtnI.)'L'='FF'XRMRTehthtiw(sm521=FF

6Mdna5M,4Msyek.wolebelbatehtninwohserasedomEPATdnaOIDARehtnielbaliavasyekNOITCNUFELBUODehT

.dengissatonsiNOITCNUFELBUODontahtsetacidnielbatehtni'-'ehT

0YEKF
1YEKF

1YEKF0YEKFAHAM
00––
01 SPARN
10 LTMRN
11 SPA–

.0='KCOLC'XRMIDehthtiwyalpsidkcolcehtgnirudevitceffeerasnoitcnufAMdnaAHehT.edom

OIDARehtnievitceffetonerasyekesoht,revewoH.LTMdnaRN,SPArofdesuebnacAMdnaAHsyek,edomEPATehtnI

No.3673–11/33

LC7232-8291

Transistor Matrix (TRMRX) Input ‘H’ and ‘L’ : Transistor base polarities

evitcA

cigol

EPAT

NIDC

WER/FFL

L.edomEPATehtstceleS
H.edomEPATehtnahtedomrehtoynastceleS

L
H.edomDCehtnahtedomrehtoynastceleS

YALP

)"H"=WER,FF(

WER

)"L"=WER,"H"=FF(

FF

)"H"=WER,"L"=FF(

noitpircseDlanoitcnuF

.ytiroirptsehgihehtnevigsiDCehT.edomDCehtstceleS

.edomDC<edomEPAT<edomOIDAR:sinoitazitiroirpehT

.wolebnwohssa,0='YALPSIDRID'XRMIDehthtiwedomEPATehtninoitacidniNOITCERIDehtslortnoC

DRAWROFESREVER

NIKSL sihT.nodenrutsiyalpsidKSeht,1='TCELESFV"XRMIDehthtiwedomMFehtnievitcasemoceblangissihtfI

NIKDL KD'XRMIDehthtiwedomDCroEPAT,FVehtni)sm52yrevedekcehc(semiteerhtevitcasemoceblangissihtfI

.etatsFFO/NOedomFVehthtiwodotgnihtonsah

.ylnonoitacificepseporuEehtotseilppasihT

Source Select Port

The OUT pins to select sources are set as shown below according to the modes.
These outputs can be used to select the desired sound source.

0=“L” 1=“H”

niptuo

RTC MF/MALM/FVTUODCedoM

FV

ffolamroNOIDAR

noKD

ybdnats

edomKDOIDAR

edomKSOIDAR

SP

NACS

edomKS

oidaR

rotinom

EPAT

DC

EPAT

DC

EPAT

DC

EPAT

DC

EPAT

DC

0
1
1

0
1
1

OIDAR

0
0
0

OIDAR

0
0
0

0
0
0

1
0
1

1
0
1

1
1
1

1
1
1

1
1
1

1
1
0

1
1
0

1
1
1

1
1
1

1
1
1

0/1
0/1
0/1

0
0
0

0
0
0

0
0
0

0
0
0

0
0
0

1
1
1

1
1
1

1
1
1

1
1
1

sm052tuobaevitcasilangisNIKSehtfI.yletaidemmidehcraessi'L'=NIKSeht,desserpsiyekFVehtnehW

ehtfidetratseblliwnoitarepoenuterotuaehT.detceleseblliwlennahctaht,detcetedsilangisDSehtretfaretal

fo)wolevitca(langisNIKSeht,edomsihtnI.)sm52yrevedekcehcsilangissiht(sdnoces03'H'sniamerNIKS

.rofdehcraeseblliw'L'=NIKStxeneht,dnuofsilangisNIKSonfI.dekcehcsi6M-1M

.deviecerebottsacdaorbIRAehtgniwolladetceleseblliwedomOIDAReht,1='TNUOC

.noitarepoKEESKSehtretfadetcetedsi'L'=NIKSehtfisdnoces3nisdnoces3nitratslliwkcehcKDehT

0
0
1

0
0
1

0
0
1

0
0
1

0
0
1

No.3673–12/33

LCD Display Pattern

LC7232-8291

1MOC2MOC1MOC2MOC
1S51Sd3c3
2S1MF2MF61Sa3pd
3S3MF)1WM(WM71Sf2b2
4S)2WM(WLFV81Se2g2
5STSb591Sd2c2
6Se5g502Sa25
7Sd5c512Sf1b1
8Sa5KS22Se1g1
9Sf4b432Sd1c1

01Se4g442Sa1NOMR
11Sd4c452SMAMP
21Sa4noloc62SSPADUOL
31Sf3b372SRNDLTM
41Se3g382STSCOL

SANYO standard panel

LCD-8162JP

No.3673–13/33

LC7232-8291

Display Examples

RADIO mode : FM frequency display VF mode : DK on FM frequency display

RADIO mode : AM frequency display TAPE mode : 12-hour clock display

TAPE mode : TAPE display and NR B TAPE mode : 24-hour clock display and NR B

TAPE mode : TAPE run display and NR C CD mode : CD display ; DIMRX ‘CLOCK’=1

ANTI THEFT mode : factory mode entry indicaiton
and blinking

ANTI THEFT mode : parsonal code entry indication
and blinking

ANTI THEFT mode : P.C. code registration and
blinking

RADIO mode : ‘P’ blinks when the ME key is
pressed.

No.3673–14/33

LC7232-8291

Key Description

(1) M1 to M6 and ME
(a) RADIO mode

These keys are used to carry out ‘preset memory’ write and read operations.
– Slow type (DIMRX ‘MEMORY TYPE’=0)

If any of M1 to M6 keys is turned of f within a 1.5 seconds, the memory data that corresponds to that k e y will be
read. If it is pressed continuously for more than 1.5 second, the frequency currently displayed will be written to
the memory.

– ME key type (DIMRX ‘MEMORY TYPE’=1)

If the ME key is pressed, the P character (indicating the preset channel) will be flashing at a cycle of 2Hz. This
means that data can be written to the preset memory. If any key of M1 to M6 is pressed in this situation within
5 seconds, the frequency currently displayed will be written.
If any other key is pressed or the HOLD (active low) signal becomes active within the 5 seconds, the write status
will be released.

(b) TAPE mode

In the TAPE mode, keys M4 to M6 can be used as the TAPE keys.
Through the DIMRX selection, the following DOUBLE FUNCTION keys becomes a v ailable. Each k ey (M4 through
M6) has their own function. The DOUBLE FUNCTIONs marked by the ‘-’ are not supported.

2NOITCNUF1NOITCNUF0NOITCNUF4M5M6M
000SPARNLTM
001–––
010–SPALTM
011––LTM
100––SPA
101––RN
110–RNLTM
111–SPARN

(c) VF mode

During the TAPE and RADIO operation under the VF mode, keys M1 through M6 can be used for tuning.

(d) Clock update with the ME key (DIMRX ‘MEMORY TYPE’=1)

The clock update can be performed by pressing the HA and MA (or the M1 and M2 ) while holding down the ME
key.
This function is effective only when the HOLD (active low) becomes inactive (or at the POWER on).

(2) HA and M1

These keys are used to update the ‘HOUR’ value. Howe v er, note that they only allow the v alue to increase. If the y are
pressed once, the value will be incremented by 1 (one hour). If they are pressed continuously for more than 500ms,
the value will increase at a speed of 4 (hours) per socond. These keys do not affect the minute and second data
display. If the ME key is used, these keys should be pressed synchronously with it. If it is not used, they should be
pressed synchronously with the DISPLAY key.
This function is effective only when the clock display is active.
In the TAPE mode, the HA key can be assigned to the APS or the MTL .

(3) MA and M2

These keys are used to update the ‘minute’ value. However, note that they only allo w the v alue to increase. If they are
pressed once, the value will be incremented by 1. If they are pressed continuously for more than 500ms, the value can
be increased at a speed of 8 (minutes) per second. In this case, the ‘second’ value is reset to 0. There will be no carry
from the minute data. If the ME key is used, they should be pressed synchronously with it. If the ME key is not
used, they should be used together with the DISPLAY key. This function is ef fective only when the clock display is
active.
In the TAPE mode, the MA key can be assigned to the NR .
Keys HA and MA can have the following functions through the DIMRX ‘FKEY0, 1’ manipulation.

1YEKF0YEKFAHAM
00––
01SPARN
10LTMRN
11SPA–

No.3673–15/33

LC7232-8291

(4) UP and DOWN

These keys are used for manual tuning. If they are pressed once, the current frequency value can be decreased
(DOWN) or increased (UP) one step. If they are pressed continuously for more than 500ms, the value will change at
a step of about 70ms. The system will enter a wait state of about 500ms when the frequency v alue has reac hed a band
edge.
In the VF mode, they can be used as the SEEK UP, DOWN keys.
These functions are effective only when the HOLD signal (active low) becomes inactive or at the POWER on.

(5) SEEK UP and SEEK DOWN

These keys are used for automatic station searching. If the desired station is searched, its frequency is held. If the
SCAN key is pressed during the seek operation, the SCAN mode will be activ ated. This means that if the SEEK UP
key is pressed during the SEEK DOWN operation, the scan operation in the UPw ard direction is started. If the SEEK
DOWN key is pressed during the SEEK UP operation, the scan operation in the DOWNward direction is started as
well.
If these keys are pressed twice in a row, the SEARCH mode will be released. The system will enter a wait state of
about 500ms when the search operation has reached a band edge. The search speed is 50ms/step for FM, or 70ms/
step for AM.
These functions are effective only when the HOLD signal (active low) becomes inactive or at the POWER on.

(6) SCAN

This key is used for automatic station searching. If the desired station is searched, its frequenc y is held for 5 seconds
(AMUTE (active lo w)=‘H’). If the key is pressed again during this 5-second period, the frequency is officially held.
If no action is taken during that 5-second period, the system will continue the search operation. If the SEEK DOWN
key is pressed during the scan operation, the seek operation in the DO WNwar d direction will be started. If this k ey is
pressed twice in a row, the SCAN mode will be released. The system will enter a wait state of about 500ms if the
search operation has reached a band edge. The search speed is 50ms/step for FM, or 70ms/step for AM.
This key is effective only when the HOLD signal (active low) becomes inactive or at the POWER on.

(7) BAND

This key is used to select the desired frequency band. The current band value will be changed every time when this
key is pressed.

This key is effective only when the HOLD signal (active low) becomes inactive or at the POWER on.

(8) VF

This key is used to activate the VF mode for FM band. It can be used in any band under the RADIO mode.
When this key is pressed, the ‘VF’ display will be turned on and the VFOUT output will change to ‘H’. In this
situation, the SD signal will be checked 300ms later . In addition, the SKIN signal (active low) will be checked 250ms
(750ms if bands are changed) later. If the SKIN signal is active, the frequency is held. If it is inactive (‘H’), the
system will start auto search operation for the SK station, and then keep a frequency at the moment when the SKIN
signal (active low) becomes active.
The SK display in the Europe and FM modes is turned on when the SKIN signal (active low) becomes active. It has
nothing to do with the VF function.

yeKsutatsyalpsiDsutatstuptuO

FVFV

NOH

FFOL

No.3673–16/33

LC7232-8291

· The VF and SEEK keys perform the following functions according to the VF modes and SKIN signal (active low)
levels :

FV

ffoH siedomFVehT

ffoL siedomFVehT

noL/HsiedomFVehT

NIKS.desserpsiFVfI.desserpsiKEESfI

)edomFV(

.noitarepo

KSehtdnadetavitca

sihcraesnoitats

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evobasaemaSevobasaemaSevobasaemaS

noitatsKSehT

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.yletaidemmi

.seunitnoc

· If the VF key is pressed in the TAPE or CD mode (with the VF mode not activated), the following operations can be
performed according to the SKIN and DKIN (active low each) signal levels :

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LH

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edom RTC MF/MA

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yalpsideht,detcetedsi'L'=NIKSehtfI.detratssinoitarepo

ehT.yalpsidedomDCehtroEPATehtotdegnahcsiedom

tI.yalpsidedomDCehtroEPATehtseunitnocmetsysehT

ehtstratsmetsysehT.'L'=NIKDehtstcetedtifi)3(otseog

evitca(langisNIKSehtskcehcnehtdnanoitarepogninuter

FV'XRMIDehthtiw)sdnoces52yrevedekcehc(sdnoces

metsyseht,detcetedsilangisNIKSonfI.0='ENUTEROTUA

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siedomFVehT

edomEPAT HLH L

edomDCHHLL

edomEPAT HLH L

edomDCHHLL

desserpsiyekFVehtfI
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LL

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LHH L

If the VF key is pressed (VF mode OFF to VF mode ON) in the RADIO MONITOR mode, the RADIO MONIT OR
mode is released and operation (1) or (2) will be then started.
– The SKIN signal (active low) is checked for 3 seconds at the POWER on (or when the HOLD signal (active low)

changes to ‘H’ from ‘L’). If it remains ‘H’ during the 3-second period, the retuning operation is started. In this
case, the SKIN signal (active low) of M1-M6 will be c hecked . If it is not detected, the SEEK UP operation will be

started.
– The above operations can be performed only if the HOLD signal (active low) is active or at the POWER on.
– The VF mode can be released by pressing the VF or the BAND key. However, the BAND key is not effective

in the TAPE mode (TAPE signal (active low)=‘L’), CD mode and RADIO MONITOR mode.

No.3673–17/33

The state diagram for the VF mode is shown below.

LC7232-8291

Notes : 1) The RADIO MONITOR is released.

2) indicates a key.

3) If the VF mode is changed to ON from OFF during the RADIO
MONITOR mode, the monitor mode will be released.

No.3673–18/33

LC7232-8291

(9) PS/AMEN

This key is used to perform two dif ferent functions. If it is pressed for less than 2 seconds, the PS (Preset Scan) mode
will be started. If it is pressed for more than 2 seconds, the AMEN (Auto store MEMory) mode will be started.
This key is effective only when the HOLD signal (active low) becomes active or at the POWER on.

(a) PS (Preset Scan) operation

If this key is pressed, the channel number currently display will be incremented sequentially. If no channel number is
displayed currently , the increment will start from channel number 1. If the desired station is encountered, the AMUTE
(active low) becomes inactive for five seconds. The LOC/DX is set to the DX unconditionally. The channel number
display blinks at a cycle of 1Hz during the PS operation. If this key is pressed twice in a row, the PS mode will be
released.
The PS mode can be released by pressing any one of the following keys :
PS/AMEM , SEEK UP , SEEK DOWN , SCAN , UP , DOWN , M1 to M6 , POWER , BAND and VF .
In addition, the PS mode can be released when the HOLD signal (active low) becomes active, and TAPE or CD mode
is started.
The Preset Scan direction is determined by the DIMRX ‘FMB0, FMB1, B0-B2’, as shown below :

(b) AMEM operation

·FM mode
Channels are stored to M1 to M6 in this order according to the intensities of electric field (ADI pin input).
[FM1, FM2 and FM3 selection mode] (DIMRX ‘FMB0, 1’=0, 0)

: If the FM1 band is first selected, channel storage starts from the M1 of the FM1 to the M6 of the FM3. → 18

channels.

: If the FM2 band is first selected, channel storage starts from the M1 of the FM2 to the M6 of the FM3. → 12

channels.

: If the FM3 band is first selected, channel storage starts from the M1 of the FM3 to the M6 of the FM3. → 6

channels.

[FM1 and FM2 selection mode] (DIMRX ‘FMB0, 1=1, 0)

: If the FM1 band is first selected, channel storage starts from the M1 of the FM1 to the M6 of the FM2. → 12

channels.

: If the FM2 band is first selected, channel storage starts from the M1 of the FM2 to the M6 of the FM2. → 6

channels.

[FM1 only selection mode] (DIMRX ‘FMB0, 1=0, 1]

: If the FM1 band is selected, channel storage starts from the M1 of the FM1 to the M6 of the FM1. → 6 channels.

[VF selection mode] (DIMRX ‘VF SELECT’=1)

: If the VF band is selected, channel storage starts from the M1 of the VF to the M6 of the VF. → 6 channels.

·MW and LW modes
Place the system in the LOCAL mode by setting the LOC pin level to ‘H’. Then, start the channel storage from M1.
If some of the M1 to M6 are not used for channel storage, change the LOC pin level to ‘L’ to activate the DX mode
and then store channels to the remaining memories.

·None-LW mode (MW1 and MW2)

If the MW1 band is first selected, channel storage starts from the M1 of the MW1 to the M6 of the MW2. → 12
channels.
If the MW2 band is first selected, channel storage starts from the M1 of the MW2 to the M6 of the MW2. → 6

channels.
During the auto store operation under any band mode, the ‘ ’ will be flashed at a cycle of 1Hz. If the entire channel
storage area is not used up, the remaining preset channel area is left as is. In this case, channel ‘1’ is read and then
displayed.
The one of the following keys can be used to release the AMEM operation.
PS/AMEM , POWER , BAND , VF , and CD
In addition, this operation mode will be released when the HOLD signal (active low) becomes active, and TAPE or
CD mode is started.

No.3673–19/33

LC7232-8291

(10) CD

This key is used to start the CD mode. In this mode, the ‘CD’ display is turned on and the CDOUT output goes high.

yeKsutatsyalpsiDsutatstuptuO

DC

When this key is pressed with the HOLD signal (active low)=’H’, the CD mode is activated immediately. The CD
mode will be released when the HOLD signal changes from ‘H’, to ‘L’ and then to ‘H’ again, or w hen the POWER
is turned on, turned off and then turned on again.
This key function is effective when the HOLD signal (active low) becomes inactive or at the POWER ON.
However, this function is not effective when the CDIN signal (active low) becomes active.

(11) LOC

This key is used in the RADIO mode. If this key is pressed, the ‘LOC’ display is turned on. In this situation, if the
SEEK or the SCAN key is pressed, the LOC output goes high and the local search operation is then started. The
LOC output goes low when the seek or the scan operation is released.

yeKsutatsyalpsiDsutatstuptuo'lamroN'sutatstuptuo'hcraeS'

COLCOL

This key function is effective when the HOLD signal (active low) becomes inactive or at the POWER ON.

NOyalpsiDH

FFOyalpsiDL

NOyalpsiDHH

FFOyalpsiDLL

(12) LOUD

If this key is pressed once, the ‘LOUD’ display is turned on and the LOUD output goes high. If it is pressed again,
the ‘LOUD’ display is turned off and the LOUD output goes low.

yeKsutatsyalpsiDsutatstuptuO

DUOLDUOL

NOyalpsiDH

FFOyalpsiDL

This key function is effective when the HOLD signal (active low) becomes inactive or at the POWER ON.

(13) DISPLAY

This key is used in the clock mode (DIMRX ‘CLOCK’=0) to change the display information (clock and frequency,
clock and TAPE display , and c lock and CD display). This ke y can be used in every operation mode when the HOLD
signal (active low) or at the POWER ON.
If the ME is not used (DIMRX ‘MEMOR Y TYPE’=0), this ke y can be used together with the HA or the MA k e y
to change the clock data. This function is effective when the HOLD signal (active low) becomes inactive or at the
POWER ON/OFF.

No.3673–20/33

LC7232-8291

mode

RADIO
mode

TAPE
mode

CD
mode

DIMRX 'PRIORITY'=0 (clock display priority mode) DIMRX 'PRIORITY'=1

DISPLAY

CLOCK display

* RADIO key

* RADIO key

PS/AMEM , SEEK UP , SEEK DOWN , SCAN , UP ,
DOWN , M1 – M6 , POWER , BAND , VF , LOC

DISPLAY

CLOCK display CLOCK displayTAPE display

· At the activation of the TAPE mode, the TAPE display is
turned on 5 seconds.

DISPLAY

CLOCK display CLOCK displayCD display

· At the activation of the CD mode, the CD display is
turned on 5 seconds.

5 seconds later after
DISPLAY OFF

CLOCK displayFREQ display

5 seconds later
after termination

FREQ display

5 seconds later after
DISPLAY off

5 seconds later after
DISPLAY off

FREQ display

CLOCK display

FREQ display

If the RADIO key is pressed in the clock display mode,
the frequency display is turned on within 5 seconds.

TAPE display

CLOCK display

TAPE display

CD display

CLOCK display

CD display

DISPLAY

5 seconds later after
DISPLAY off

DISPLAY

5 seconds later after
DISPLAY off

DISPLAY

5 seconds later after
DISPLAY off

VF
mode

In the TAPE or CD mode

SK search

FREQ display

Note : In this operation mode, the system finally enters the CLOCK

display mode. This means that the TAPE running direction
becomes unclear if the DIMRX 'DIR DISPLAY' has not been
set to '0'.

SKIN="L"
DK off

5 seconds later

CLOCK displayTAPE or CD display

DK on

5 seconds later

SK search

FREQ display

DK on

TAPE or CD display

Note : In the TAPE display mode or the FREQ display
mode, the TAPE running direction becomes unclear if the
DIMRX 'DIR DISPLAY' has not been set to '0'.

SKIN="L"
DK off

No.3673–21/33

LC7232-8291

(14) RMON

This key is used to activate the RADIO MONITOR mode temporarily. If the key is pressed in the TAPE or the CD
operational mode, the ‘RMON’ display blinks at a c ycle of 1Hz. During this blink mode, RADIO frequencies can be
received. If this key is pressed again, the RADIO MONITOR mode will be released and the previous operational
mode is restored.

yeKsutatsyalpsiD

NOMRNOMR

RTC

NOyalpsiDLHH

FFOyalpsiD******

** : Indicate the statuses that are prior to the activation of the RADIO MONITOR mode.

This key is effective in the DK wait (standby) state under the VF operational mode.
If the VF key is pressed (VF mode OFF to VF mode ON) in the RADIO MONITOR mode, the RADIO MONITOR
mode is released and operation (1) or (2) will be then started.

sutatstuptuO

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edomEPAT HLH L

edomDCHHLL

edomEPAT HLH L

edomDCHHLL

This function is effective only when the HOLD signal (active low) becomes inactive or at the POWER ON.

(15) POWER (DIMRX ‘POWER SW’=1)

This key is used to control the power supply with a ke y of the ke y matrix. If this key is pr essed, the PO WER pin le vel
goes high. In this situation, if the TAPE in is pressed, the TAPE mode will be activated while the CD mode will be
active if the CD on (CDIN signal (active low)=‘L’) is pressed.

Power Supply Connection Examples

POWER key configuration (DIMRX ‘POWER SW’=1)

External POWER switch configuration (DIMRX ‘POWER SW’=0)

No.3673–22/33

LC7232-8291

Remote Control Function (by the LC7461M-8103 application)

The remote control keys can be used to perform all the functions of the main unit keys.

0OK1OK2OK3OK4OK5OK6OK7OK
0IK0 DUOL4TS/OM8FV21DNAB61COL02YALPSID42–82–
1IK11M5LTM/4M9NWOD31NDKEES71SPA12NOMR52*JDA92–
2IK22M64 01PU41PUKEES81RN22REWOP62*AH03–
3IK33M7SPA/6M11PUNACS51DC91MEMA/SP32EM72*AM13–

‘–’ : not assigned.

In the remote control mode, the ME key cannot be used with the M1 – M6 keys at the same time. To write data to the
system storage, press the ME key first and then press any of M1 through M6 keys.
* Keys ADJ , HA and MA are provided for exclusive use under the remote control mode. Keys APS and NR (17 and

18) perform only the APS and NR functions of the main unit k e ys HA/APS and MA/NR , respectively. If the ADJ key
is pressed, the clock update mode will be activated and the display data will be flashing. If the key is pressed again, the
clock update mode will be released.
These remote control keys are not effective under the ANTI THEFT operation mode.

No.3673–23/33

State Diagram

(1) No clock selection

LC7232-8291

(2) Clock selection

Notes : 1) indicates a key.

2) The ‘CD on’ is equivalent to the situation where the CDIN signal (active low) becomes active.

No.3673–24/33

(3) VF mode on

No clock selection

LC7232-8291

(4) VF mode on

Clock selection

Note : RADIO monitor omitted

Notes : 1) indicates a key.

2) The ‘CD on’ is equivalent to the situation where the CDIN signal (active low) becomes active.

3) If the VF key is turned on with VF=off during the RADIO MONITOR operation, the RADIO
MONITOR mode will be released and the VF mode will be then activated.

4) If the ‘DK on’ is detected during the RADIO MONITOR operation, the RADIO MONITOR mode
will be released and the SK broadcasting will be then started.

No.3673–25/33

LC7232-8291

Timings

(1) SEEK, SCAN

Notes : 1. IF count tolerance

MFzHk01±zHM7.01
WMzHk3±zHk054

WLzHk6.0±zHk054

2. The SD is checked for 10ms in the IFcount mode.
Otherwise, it is checked for 15ms.

(2) Manual UP and DOWN (applies to the FM and AM modes)

(3) VF auto retune

The retune operation will be started at the following timings if the SKIN signal (active low) remains inactive

(‘H’) for more than 30 seconds under the VF mode.

Note 1 : The VF preset memory search operation is performed at the following timings :

Notes 2 : If no SD is detected in the VF preset memory, the normal VF SEEK UP operation is started. In this case,

it is carried out at the same timing as TIMING (1).

No.3673–26/33

LC7232-8291

(4) LOC pin control

The SEEK, SCAN, AMEN and VF auto retune operatinos are performed as shown below during the ‘LOC’

display.

(5) SKIN signal (active low) check time at the VF mode change from OFF to ON.

(6) Audio Mute (AMUTE : active low)

(1) Key chattering reject time period (40ms)
(2) Audio mute leading time and BEEP out (50ms)
(3) PLL data and Display change processing (30ms to 50ms)
(4) Audio mute trailing time

(a) BAND, M1 to M6, VF on → off

(b) VF OFF to VF ON (The case where the TAPE (active lo w)=‘L’, CDIN= (active low) ‘L’, CD on is detected

with DK signal inactive is not included)

(c) UP, DOWN

No.3673–27/33

(d) PS (preset scan)

(e) AMEM, SEEK, SCAN

(f) VF auto retune

LC7232-8291

Note : The AMUTE signal (active low) is not output in the case where the DK signal is not detected but the TAPE signal

(active low) or the CDIN signal (active low) becomes active, or the CD on is detected. This applies to (a) to (f).
Note that the AMUTE signal is output at the BAND selection of (a).

(7) Mode change

(a) The modes are changed in the following cases :

– RADIO on
– RADIO monitor on/off
– TAPE in/out
– CD on/off
– CDIN= ‘H’ → ‘L’ → ‘H’

No.3673–28/33

(b) VF off → on (TAPE and CD in)

LC7232-8291

(8) Timings for SK display with the SKIN signal (active low) and ST display with the STEREO signal (activ e low)

under the FM RADIO mode or the VF mode, and Timing for TAPE running direction display with the DIR signal.

(9) ALARM output (VF mode)

The ALARM signal is output when the SKIN signal (acti v e lo w) remains inacti v e continuously for 30 seconds. At
the same time, the SEEK UP operation will be started. (DIMRX ‘VF AUTORETUNE’=0)

No.3673–29/33

LC7232-8291

(10)HOLD mode

The HOLD mode means a status where only the clock block is in the active state. This mode is acti v a ted when the
HOLD signal (active low) changes from ‘H’ to ‘L’. In this mode, the input to the FMIN, AMIN, HCTR, LCTR
and ADI pins is inhibited.

(11)BACK UP mode

The BACK UP mode means a status where the 4.5MHz X’tal oscillation circuitry is in the inactive state and the
POWER SAVE mode is activated. This mode is activated when the HOLD signal (active low) changes from ‘H’
to ‘L’. In this mode, the input to the FMIN, AMIN, HCTR, LCTR and ADI pins is inhibited.

Initial Status

RADIO mode TAPE mode POWER on, HOLD=”H”

• band ....... FM1 (low band • NR B, NR C... off • CD off

• MO/ST .... mono • MTL ............... off • RADIO monitor.... off

• VF ........... o ff

• LOC ........ DX (off)

edge) • APS ............... off • LOUD.... off

Tracking Point Frequency

aerAdnaB1M2M3M4M5M6Mlennahctsal

b,aMF5.781.091.891.6019.7015.785.78

aWM035006000100410271035035

ASU

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bWM035006000100410261035035
cWM13530699940410261135135
dWM13530699940419171135135

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cWM13530699940410261135135

EPORUE

eWM22530699940410261225225
aWL351061002062182351351
bWL641061002062092641641

eMF0.676.870.386.680.090.670.67

fWM22530699940419261225225

bMF5.781.091.891.6019.7015.785.78

gWM13530699940412061135135

fMF5.781.091.891.6019.7015.785.78

gWM13530699940412061135135

gMF0.460.470.480.490.4010.460.46

EPORUE

hWM22530699940410261225225

The low band edges are loaded into the FM2, FM3 and MW2.

No.3673–30/33

Sample Application Circuit 1 :

POWER SW=momentary switch.
ANTI THEFT function used.

LC7232-8291

No.3673–31/33

Sample Application Circuit 2 :

POWER SW=momentary switch.
ANTI THEFT function used.

LC7232-8291

No.3673–32/33

LC7232-8291

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 January, 2002. Specifications and information herein are subject
to change without notice.

PS No.3673–33/33