Sanyo PLUS T35 - Integrated Circuit Function Diagrams; LC7252 Frequency Display IC Diagram; LA1240 AM Tuner System IC Diagram; DS8629 Prescaler IC Diagram

LC7252(5 DIGIT FREQUENCY DISPLAY WITH CLOCK=™FLUORESCENT DRIVER )
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accu neces ssacecceeesecamy
SEGMENT ORIVER
ME EES ME Ee ee ERE EEE
MULTI-PLEXER
MONTH/DATE STOP
WATCH COUNTER
L LATCH
fC tfFt TFET FETE
FREQUENCY COUNTER
>
Vaceeey
eee
1}
f= IF FREQUENCY CONTROL
| =
TIMING ca
>, | centro | IF FREQUENCY FINE ADJUSTER
==
ed
{FFM 1F-AM1
SIS 1SISIe ISIS ,S|SISIS
feraiipegaesé
ae FS GEESE BERS
LA1240(AM TUNER SYSTEM)
CON-OUT2
RF-OUT CON-IN VCC ; CON-OUT IF-IN IF-OUT! IF-IN2 vcc
RF-CON2 SUB SiM
re-conif? | [16}RF-CON2
RF-1N2[2 | 115}S/M
vec[3 | [14JAGc
Rre-our [4] HSpIF-INZ
con-ouT (5 | fr2}tF-OUT
con-our2[6 | farjvcc
CON-IN fojsue
1F-INf@| [9 }IF-our?
(TOP VIEW)
DS 8629 (135MHz DIVIDE-BY-100 PRESCALER)”ECL &TLL.,
VCCI{ECL) vCC2(TLL)
)
z!
FIN O~ BUFFER/ = ECL | ECL TO TTL is USTTL = LSTTL
(6)—-| AMPLIFIER OUNTER TRANS LATOR COUNTER | COUNTER
ian
GNDIKECL) GND2{TTL) BIAS
vec2Tiey{ + | [8 }vccicecL)
out-Put[2 | FIN
GND2( TTL) | FIN
GNDKECLSS | Bias
{Top vIEW)
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