Am28F256A 21
DC CHARACTERISTICS over operating range unless otherwise specified (Notes 1-4)
TTL/NMOS Compatible
Notes:
1. Cautio n: The Am28F256A must not be removed from (or inserted into) a socket when V
CC
or V
PP
is applied. If V
CC
ð
1.0
volt, the voltage difference between V
PP
and V
CC
should not exceed 10.0 volts. Also, the Am28F256A has a V
PP
rise time
and fall time specification of 500 ns minimum.
2. I
CC1
is tested with OE# = V
IH
to simulate open outputs.
3. Maximum active power usage is the sum of I
CC
and I
PP
.
4. Not 100% tested.
Parameter
Symbol Parameter Description Test Conditions Min Typ Max Unit
I
LI
Input Leakage Current V
CC
= V
CC
Max, V
IN
= V
CC
or V
SS
±1.0 µA
I
LO
Output Leakage Current V
CC
= V
CC
Max, V
OUT
= V
CC
or V
SS
±1.0 µA
I
CCS
V
CC
Standby Current V
CC
= V
CC
Max, CE# = V
IH
0.2 1.0 mA
I
CC1
V
CC
Active Read Current
V
CC =
V
CC
Max, CE# = V
IL,
OE# = V
IH
I
OUT
= 0 mA, at 6 MHz
20 30 mA
I
CC2
V
CC
Programming Current
CE#
=
V
IL
Programming in Progress (Note 4)
20 30 mA
I
CC3
V
CC
Erase Current
CE
#
=
V
IL
Erasure in Progress (Note 4)
20 30 mA
I
PPS
V
PP
Standby Current V
PP
= V
PPL
±1.0 µA
I
PP1
V
PP
Read Current
V
PP
= V
PPH
70 200
µA
V
PP
= V
PPL
±1.0
I
PP2
V
PP
Programming Current
V
PP
= V
PPH
Programming in Progress (Note 4)
10 30 mA
I
PP3
V
PP
Erase Current
V
PP
= V
PPH
Erasure in Progress (Note 4)
10 30 mA
V
IL
Input Low Voltage –0.5 0.8 V
V
IH
Input High Voltage 2.0 V
CC
+ 0.5 V
V
OL
Output Low Voltage I
OL
= 5.8 mA, V
CC
= V
CC
Min 0.45 V
V
OH1
Output High Voltage I
OH
= –2.5 mA, V
CC
= V
CC
Min 2.4 V
V
ID
A9 Auto Select Voltage A9 = V
ID
11.5 13.0 V
I
ID
A9 Auto Select Current A9 = V
ID
Max, V
CC
= V
CC
Max 5 50 µA
V
PPL
V
PP
during Read-Only
Operations
Note: Erase/Program are inhibited
when V
PP
= V
PPL
0.0 V
CC
+2.0 V
V
PPH
V
PP
during Read/Write
Operations
11.4 12.6 V
V
LKO
Low V
CC
Lock-out Voltage 3.2 3.7 V
