Must Be - Intel MCS48 User Manual

2716
A.C.
Characteristics
Symbol
Parameter
2716
Limits
2716-1
Limits
2716-2
Limits
Unit
Test
Conditions
Min
Typ
Max
[3]
Min Typ Max Min Typ Max
l
ACC
Address
to
Output
Delay
450
350 390
ns
CE
=
OE
= V|
L
tCE
CE
to
Output
Delay
450
350 390
ns
OE
= V,
L
*OE
Output
Enable
to
Output
Delay
120
120 120
ns
CE =
V,
L
tDF
Output
Enable High
to
Output Float 100 100 100
ns
CE =
V| L
tQH
Output Hold from
Addresses,
CE
or
OE
Whichever Occurred
First
ns
CE =
OE
= V|
L
Capacitance
[4]
T A =
25°C,
f
=
1
MHz
Symbol
Parameter
Typ.
Max.
Unit
Conditions
C
IN
Input Capacitance 4
6
pF
V|
N
=
0V
C
OUT
Output
Capacitance 8 12
pF
V
O
UT
=
0V
A. C.
Waveforms
[1.
ADDRESSES
X
ADDRESSES
VALID
«CE
\
[5]
[5]
OUTPUT
«
A.C. Test Conditions:
Output
Load:
1
TTL
gate
and
C
L
=
100 pF
Input Rise and
Fall
Times:
<20
ns
Input Pulse Levels: 0.8V
to
2.2V
Timing Measurement
Reference
Level:
Inputs
1Vand2V
Outputs 0.8V and
2V
X
tQH
VALID OUTPUT
[6]
tDF
HIGH Z
NOTE:
1.
VfjC
m
ust be applied simultaneously or before
Vpp and removed simultaneously
or
after
Vpp.
2.
Vpp may
be
connected
directly to
Vqc except during programming.
The
supply current would then be the
sum
of
\qq and
lpp-|.
3.
Typical values
are for
T
A
= 25°C and nominal
supply voltages.
4.
This parameter
is
only sampled and
is
not
100%
tested.
5.
OE
may
be delayed
up
to
t/^CC
_
l
OE after tne fa |lin
9
edge
of
CE
without impact on
t^cc-
6.
tQF
is
specified
from
OE
or
CE, whichever
occurs
first.
7-18