Fluke 93 Service Manual page 138

7-12
CORRECTIVE MAINTENANCE
Table 7.2 Signals
measured
on
microprocessor D1201.
Logic
ObOV,
Logic
1»-i-5V
Comp Name
(pin)
Scope
Freq. Data
Description
Circ/lC H/LiA
D1201
1
AD01
/AD1/P3
riJlJTnjlJ
1-5
MHz A
Address
Dalai /Address
Datal
ports
2
ADOO/ADO/P3
rXJTJnJTJlJ
2
MHz A
Address DataO/Address
DataO
por13
3 2
MHz
A
Read noVRead
4
ADVN
/AL£/ADV
2
MHz
A
Address
valid
not/Address
latch
enable/
Address
valid
output
5
/INST
1
nn
200 kHz
A
/Instruction fetch for externaJ
memory
e
/BUSWIDTH
0
1
/Buswidth
selection,
8
or
16
bit
7
MPCLKoi;T/cLKoirr
AAAAj-
.
6.25
MHz
A
pP
clock ouVcIock out 1/2
oscillation
frequency
50%
duty cycle
8
/^•TAL2
/\
A A
A
12.5
MHz
A
/Crystal
V
\/ \/
9 /X-TAL1
12.5
MHz
A
/Crystal
10
A/SS
0
1
/Voltage supply
ground
(0)
11
A/SS
n
1
/Voltage supply
ground
(0)
12
NCC
0
H
/Main supply (45V)
13
A^CC
0
H
/Main supply (45V)
14
/EA
I*
0 H
/External
access
15
/NMI
mill iiiiiiiiini
A /NonMaskable
Interrupt
16
yPO.3
0
H
/port
0.3
17 /ACH1
0
H
/Artslog
channel
1
18
/ACHO
0
0
H
/Analog channel 0