Datron 1061 Calibration And Servicing Handbook page 50

:,
'.
:
-
+4'75V----
+5V SUPPLY
LINE
38
1
ñESE-I
0
-25mS
I
1
Mls/M2O
C.S
LINE
I
o
F¡G.3.38
START
UP
AND
NON.VOLATILE RAM PROTECTION
Operation
Keyboard read/wr¡te
Forces
a
MPU 'power
up'sequence
Triggers processor time guard
(M43)
A-D main
counter output enable
Analog interface address latch input
enable
Addresses keyboard
l.e.d.
latches
A-D,
and
interrupt status output enable
CAL INTERVAL switch
output
enable
A-D
control
latches,
input enable
A-D
delay counter input enable
M32/M16
Pin
No.
M32-2
(M32-4)
(M32-11)
M32-6
(M32-e)
M
16-7
M16-6
M16-5
M16-4
M16-9
M16-10
M16-1
1
M16-12
SIGNAL
XKYBRD
XAõDT
XKDSPO
rcsÞî
m-m
IRõ'SF3
ÌÃD-SE'
laocrl
NDõì]
A6 A5 A4 A2 A1
AO
o
o
1
0
o
o
0
0
0
o
0
o
o
0
0
0
1
1
0
0
0
0
1
1
1
1
o
1
0
o
1
o
0
0
0
0
o
0
0
1
ü
X
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
1
1
0
0
1
1
X
X
X
X
X
o
1
0
1
0
1
0
1
FIG.
3.39
CMOS
ADDRESS DECODING
rl ,l.