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IC
UPD72067GC-3B6 (NEC)
C-MOS PROGRAMMABLE FLOPPY DISK CONTROLLER
-TOP VIEW-
~
~
37
36
$
34
~
~
fil
30
~
~
v
n n o o o n n o n n n o n
45
c:::::
.s~
:d
49~
sod
std
52~0
~
l J
l J
3
u
~
'
5
XAI
DRQ
'!iRR
INT
RDA TA
"
XA2
AO
V1t11
o-!-
GND
<>~-~:E.:.2'
10
11
12
13
DRO DRI
SEQUENCE
CONTROL
"'
"•
WCLK
CLKOUT
( i: Using the externai VFO.
23
22
21
20
19
18
17
16
15
14
Com1H11d Rr1.
Cl•
ONCN
Ill• I NCN
N/I 2NCN
t:OT /SC/ I 3NCN
DTL/STP/D
CPL
SRT
HUT
llLT
ND
STO
STI
ST2
STl
c
Ol'CN
ll 1
l'CN
I 2 l'CN
131'CN
•I
PIN
lio,
SlllBOL
1
ll£ADY
2
HOLD
3
FUR/STEP
4
LCT/DIR
5
jl!li/SEEX
6
YOO
7
NC
8
llES£T
9
liD
10
llill
11
I
cs
12
I
AO
13
I
~c
14
I
CND
15
I
oeo
16
I
DBI
n
I
DB2
18
I
DB3
19
j
M4
I
20
I
DBS
21
I
086
22
I
087
23
jDllQ
u
I
DAt1
25 jTC
I
26
Illlf
Automatically selected
on the command execution.
•I ; m:Ar> LOAD/UNLOAD TIMER
•2:
sn:1•
HATE TIMER
READY
WPRT/2SIDE
INDEX
FLT/TRKO
TC
USO
USI
HDLD
LCT/l>IR
Fl-TR/STEP
KW/SEEK
Sll>E
MFM
_r:::::::---1------FMT
1------'e;;.C•-
WE
1 - - - - - - ' 3
'!.-
SYNC
IWCLKI
:;
~~~
L - - - - - 1 "
:~~~:
WDATA
(when the internal rnode is EXT= 1 or the external rnode.)
5-16
PIN
I
J
lio.
SIN81l.
v
lllC
1
~
I XBl
~
I
XB2
1
30
I
EXT
31
I
XAl
I
I
~
I
XA2
~
iCND
I
34
i
GND
35 I RDATA
I
36 'WDATA
37 I PCSO (SYHCJ
~
I
PCS! (WlllOOW)
I
~
IF!ITOIF!1l
I
I
40
I
NC
I
I
41
1
rucOllT
I
42 I
INDEX
I
43 I Dll!CE.'13)
J
«
I llllO<E112J
I
45 : E.'lt
l
I
.s
I EIKl
T
(7
l
SllE
I
48 I US!
I
49 I USO
I
50
I
WE
!
51
!
FLT/TRIO
i
52
!
ll!llT/2SIDE
NWS-1510/1530/1580
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