28C64A-15 Просмотр технического описания (PDF) - Microchip Technology
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28C64A-15 Datasheet PDF : 8 Pages
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28C64A
1.0 ELECTRICAL CHARACTERISTICS
1.1 MAXIMUM RATINGS*
VCC and input voltages w.r.t. VSS ....... -0.6V to + 6.25V
Voltage on OE w.r.t. VSS ..................... -0.6V to +13.5V
Voltage on A9 w.r.t. VSS ...................... -0.6V to +13.5V
Output Voltage w.r.t. VSS................ -0.6V to VCC+0.6V
Storage temperature .......................... -65˚C to +125˚C
Ambient temp. with power applied ....... -50˚C to +95˚C
*Notice: Stresses above those listed under “Maximum Ratings”
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.
TABLE 1-1: PIN FUNCTION TABLE
Name
Function
A0 - A12
CE
OE
WE
I/O0 - I/O7
RDY/Busy
VCC
VSS
NC
NU
Address Inputs
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
Ready/Busy
+5V Power Supply
Ground
No Connect; No Internal Connection
Not Used; No External Connection is
Allowed
TABLE 1-2: READ/WRITE OPERATION DC CHARACTERISTIC
VCC = +5V ±10%
Commercial (C): Tamb = 0˚C to +70˚C
Industrial (I): Tamb = -40˚C to +85˚C
Parameter
Status
Symbol Min Max Units
Conditions
Input Voltages
Input Leakage
Input Capacitance
Logic ‘1’
Logic ‘0’
—
—
VIH
2.0
VIL
-0.1
ILI
-10
CIN
—
Output Voltages
Output Leakage
Logic ‘1’
Logic ‘0’
—
VOH
2.4
VOL
ILO
-10
Output Capacitance
—
COUT
—
Power Supply Current, Active
TTL input
ICC
—
Power Supply Current, Standby TTL input ICC(S)TTL —
TTL input ICC(S)TTL
CMOS input ICC(S)CMOS
Note 1: AC power supply current above 5MHz: 2mA/MHz.
2: Not 100% tested.
Vcc+1
0.8
10
10
0.45
10
12
30
2
3
100
V
V
µA VIN = -0.1V to Vcc +1
pF VIN = 0V; Tamb = 25˚C;
f = 1 MHz (Note 2)
V IOH = -400 µA
V IOL = 2.1 mA
µA VOUT = -0.1V to Vcc
+0.1V
pF VIN = 0V; Tamb = 25˚C;
f = 1 MHz (Note 2)
mA f = 5 MHz (Note 1)
VCC = 5.5V
mA CE = VIH (0˚C to +70˚C)
mA CE = VIH (-40˚C to +85˚C)
µA CE = VCC-0.3 to Vcc +1
DS11109H-page 2
© 1996 Microchip Technology Inc.
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