MCM6949 Просмотр технического описания (PDF) - Motorola => Freescale
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MCM6949 Datasheet PDF : 10 Pages
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TRUTH TABLE (X = Don’t Care)
E
G
W
Mode
H
X
X
Not Selected
L
H
H
Output Disabled
L
L
H
Read
L
X
L
Write
I/O Pin
High–Z
High–Z
Dout
High–Z
Cycle
—
—
Read
Write
Current
ISB1, ISB2
ICCA
ICCA
ICCA
ABSOLUTE MAXIMUM RATINGS (See Note)
Rating
Symbol
Value
Unit
Power Supply Voltage Relative to VSS
Voltage Relative to VSS for Any Pin
Except VCC
VCC
– 0.5 to + 5.0
V
Vin, Vout – 0.5 to VCC + 0.5 V
Output Current (per I/O)
Iout
± 20
mA
Power Dissipation
PD
1.0
W
Temperature Under Bias
Tbias
– 10 to + 85
°C
Operating Temperature
TA
0 to + 70
°C
Storage Temperature — Plastic
Tstg
– 55 to + 150
°C
NOTE: Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are
exceeded. Functional operation should be restricted to RECOMMENDED OPER-
ATING CONDITIONS. Exposure to higher than recommended voltages for
extended periods of time could affect device reliability.
This device contains circuitry to protect the
inputs against damage due to high static volt-
ages or electric fields; however, it is advised
that normal precautions be taken to avoid
application of any voltage higher than maxi-
mum rated voltages to these high–impedance
circuits.
This BiCMOS memory circuit has been
designed to meet the dc and ac specifications
shown in the tables, after thermal equilibrium
has been established. The circuit is in a test
socket or mounted on a printed circuit board and
transverse air flow of at least 500 linear feet per
minute is maintained.
MCM6949
4
MOTOROLA FAST SRAM
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