Sharp PC-6220 Service Manual page 84

10. Pin description
, 80 ' ,51
'B1 '," 50
1000 31
,
30
,NO
SIGNAL, BUFTYPE NO SIGNAL BIJFTYPE
NO
SIGNAL'
BUFTYPE
NO
SIGNAL BUFTYPE
1
VGACS: OBF2M
26 -BYTE
'OBF2M'
lj1
XD6
10BF
76 A11 IBF
2 ADO
, 10BF 27 -MEMWE
"OBF 52 XD7 10BF 77
I,
A10
IBF
3' AD1 10BF 28 -MEMOE
OBF
,
53 -CSB042 OBF2M
78 A9 IBF
4
AD2 10BF 29 -MEMCEO OBF2M
54 -INTKEY OB.F2M 79 A8 'IBF
5 AD3 LOBF
30
-MEMCE1
OBF2M
~5
-MEMR iBF
,80
A7 IBF
,
6
AD4'
10BF
:
31
-M~MCE2
OBF2M 56 -MEMW IBF
81
A6
' IBF
7
ADS
10BF, 32 -MEMCE3
OBF2M 57 -lOR
IBF '
82
A5 IBF
8 AD6 10BF 33 -RMEM16 IBF
58 "lOW
IBF,
83
A4
IBF
9 AD7
,IOBF
34 PDCLK OBF
~9
RESET IBFS
84
A3 IBF
10
GND 35 -PDIN OBF2M 60 -SELTM OBF2M 85 A2 IBF
11
ADS' OBF 36 -ACK IBFSU 61 -MEMCS16 OBFN6M
86
A1 IBF
12
AD9
OBF "
37 SLCTIN OBF2M 62 IRQ7 TOBF 87 XAO IBF
13 BCC
,
:iB INIT OBF2M 63
IRQ5
TOBF
88
10CHRDY
OBF
14 AD10
OBF
39
AUTFDX
OBF2M
64 AEN IBF 89 VCC
15 AD11 OBF, 40 GND 65
GND 90
GND
16 AD12 ,
OBF
41 VCC 66 ALE IBF 91 VIFCNT IBF
17 AD13 OBF '
,
'
42 STROBE OBF2M 67
-LMSEL
IBF
92
-HDCSO OBF
18 AD14
OBF
43 -PRT EN
OBF 68 A19
IBF
93
-HDCS1
OBF
19 AD15
OBF
44 -STBY
OBF 69 A18
IBF
94
-ENCRT
OBF2M
20 EA16 OBF 45 XDO 10BF 70 A17 IBF 95 -FDSEL OBF2M
21 EA17 OBF 46 XD1 10BF 71 A16
IBF
96
-SELMD
IBF
22 EA18
OBF
47 XD2
10BF
72
A15
IBF
97
-SELEX10 IBF
23 EA19 OBF 48 XD3 10BF 73 A14 IBF 98 -READY IBF
24 EA20 OBF 49 XD4 10BF 74 A13 IBF 99 -MEN16 IBF
25 GND 50 XD5 10BF 75 A12
IBF
100
VGMEN
OBF2M
IBF : TIL level input buffer
IBFS : TIL level schmidt trigger input buffer
IBFSU : TTL schmidt trigger input buffer with a pullup resistor
OBF' : Output buffer 10L=4mA
OBF2M : Output buffer 10L=2mA
OBFN6M : Nch open drain output buffer IOL=6mA
10BF :
TIL
level input/output buffer
rOSF : Tri-state output buffer
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