Grundig CF 11 Serviceanleitung Seite 27

CF 11 Schaltplane und Platinenabbildungen / Circuit Diagrams and Layout of PCBs
IC 404 M 37471 (8-BIT CMOS MICROCOMPUTER)
Clock
input
Clock
output Reset input
Vec Xin Xout
M 37471
Xcin Xcout
Timer 1 i ae 3
iy
Instruction
decoder
RAM Program
counter
PCi(8)
Program
counter
PC, (8)
Control signal
a
Index
register
Y(8)
Index
register
X(8)
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i
Fle |
mT
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i
i
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i
1
'
t
| —_ 0
1
| | te
| | 4
u | A-D converter | | | A-D converter | converter T svoe) |
' X cout CNTR INT;
| XcIN INTo
! P5(4) | Paid) | THEE P2(8) P41 | PH) | Pos)
| 7TH
TE
'i auk
| H
1
L. VOSS — SE8@ = OSU - 48 - COLOTOED — bbb ane alae COCBUTOEY- —-
Input port port PS VO port PA port P4 liputport port P3 VReF yoponP2 port P2 Vo ponP1 port VoponPO port PO
Reference
vollage input
P53 >[1] + P52
P17Srpy <> [2| <> P07
P1¢CLK <> <> P06
P1s Sour [4] <> P0s
PigSins> <= P04
Pi3sT1<>[6] <> P03
PloTo> <> P02
Pi; <>[8] ooo <> PO;
P19 <>[9] % S P00
P27 /IN7 <> [10] mS KS ~> P43
P2g /INg <> [ii] $ss <> Pdp
P25/INs5 <> [12] S35 <> P4;
P24 /IN4 <> [3 SS +> P40
P23 /IN3 <> 114) + P33/CNTR,
P29 /INo <> [15] 8|<- P32/CNTRo
P2,/INy <> > P3, /INT;
P29 /INo <> [17] + P3 /INTo
Vacr > [8 <> RESET
Xin > fl 4 } < > P54 /X cout
Xout + <= P5o/Xin
Vss_ 2i Vcc
GRUNDIG Service