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28C64A
DS11109H-page 2
1996 Microchip Technology Inc.
1.0
ELECTRICAL CHARACTERISTICS
1.1
MAXIMUM RATINGS*
V
Voltage on OE w.r.t. V
Voltage on A9 w.r.t. V
Output Voltage w.r.t. V
Storage temperature ..........................-65C to +125C
Ambient temp. with power applied .......-50C to +95C
CC
and input voltages w.r.t. V
SS
.......-0.6V to + 6.25V
.....................-0.6V to +13.5V
......................-0.6V to +13.5V
................ -0.6V to V
SS
SS
SS
CC
+0.6V
*Notice:
may cause permanent damage to the device. This is a stress rat-
ing only and functional operation of the device at those or any
other conditions above those indicated in the operation listings of
this specification is not implied. Exposure to maximum rating con-
ditions for extended periods may affect device reliability.
Stresses above those listed under “Maximum Ratings”
TABLE 1-1:
PIN FUNCTION TABLE
Name
Function
A0 - A12
Address Inputs
CE
Chip Enable
OE
Output Enable
WE
Write Enable
I/O0 - I/O7
Data Inputs/Outputs
RDY/Busy
Ready/Busy
V
CC
+5V Power Supply
V
SS
Ground
NC
No Connect; No Internal Connection
NU
Not Used; No External Connection is
Allowed
TABLE 1-2:
READ/WRITE OPERATION DC CHARACTERISTIC
V
Commercial (C): Tamb = 0C to +70C
Industrial (I): Tamb = -40C to +85C
CC
= +5V
±
10%
Parameter
Status
Symbol
Min
Max
Units
Conditions
Input Voltages
Logic ‘1’
Logic ‘0’
V
V
IH
IL
2.0
-0.1
Vcc+1
0.8
V
V
Input Leakage
—
I
LI
-10
10
μ
A
V
IN
= -0.1V to Vcc +1
Input Capacitance
—
C
IN
—
10
pF
V
f = 1 MHz (Note 2)
IN
= 0V; Tamb = 25C;
Output Voltages
Logic ‘1’
Logic ‘0’
V
V
OH
OL
2.4
0.45
V
V
I
I
OH
OL
= -400
= 2.1 mA
μ
A
Output Leakage
—
I
LO
-10
10
μ
A
V
+0.1V
OUT
= -0.1V to Vcc
Output Capacitance
—
C
OUT
—
12
pF
V
f = 1 MHz (Note 2)
IN
= 0V; Tamb = 25C;
Power Supply Current, Active
TTL input
I
CC
—
30
mA
f = 5 MHz (Note 1)
V
CC
= 5.5V
Power Supply Current, Standby
TTL input
TTL input
CMOS input
I
I
CC
CC
CC
(
(
S
S
S
)
)
)
CMOS
TTL
TTL
I
(
—
2
3
100
mA
mA
μ
A
CE = V
CE = V
CE = V
IH
IH
CC
(0C to +70C)
(-40C to +85C)
-0.3 to Vcc +1
Note 1: AC power supply current above 5MHz: 2mA/MHz.
2: Not 100% tested.
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