M5M54R04J-12 Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC
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M5M54R04J-12 Datasheet PDF : 6 Pages
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MITSUBISHI LSIs
M5M54R04J-12,-15
4194304-BIT (1048576-WORD BY 4-BIT) CMOS STATIC RAM
FUNCTION
The operation mode of the M5M54R04J is determined by a
combination of the device control inputs S, W and OE. Each
mode is summarized in the function table.
A write cycle is executed whenever the low level W overlaps
with the low level S. The address must be set-up before the
write cycle and must be stable during the entire cycle.
The data is latched into a cell on the trailing edge of W or S,
whichever occurs first, requiring the set-up and hold time
relative to these edge to be maintained. The output enable
input OE directly controls the output stage. Setting the OE at
a high level, the output stage is in a high impedance state,
and the data bus
contention problem in the write cycle is eliminated.
A read cycle is excuted by setting W at a high level and
OE at a low level while S are in an active state (S=L).
When setting S at high level, the chip is in a non-
selectable mode in which both reading and writing are
disable. In this mode, the output stage is in a high-
impedance state, allowing OR-tie with other chips and
memory expansion by S.
Signal-S controls the power-down feature. When S goes
high, power dissapation is reduced extremely. The access
time from S is equivalent to the address access time.
FUNCTION TABLE
S W OE
HXX
LLX
L HL
L HH
Mode
Non selection
Write
Read
DQ
High-impedance
Din
Dout
High-impedance
Icc
Stand by
Active
Active
Active
ABSOLUTE MAXIMUM RATINGS
Symbol
V cc
VI
VO
Parameter
Supply voltage
Input voltage
Output voltage
Conditions
With respect to GND
Ratings
Unit
-3.5* ~ 7
V
-3.5 * ~ VCC+0.3 V
-3.5 * ~ VCC+0.3 V
Pd
Power dissipation
Ta=25 C
1000
mW
T opr
Operating temperature
Tstg(bias) Storage temperature (bias)
0 ~ 70
C
-10 ~ 85
C
T stg
Storage temperature
-65 ~ 150
C
*Pulse width ≤ 20ns, In case of DC:-0.5V
DC ELECTRICAL CHARACTERISTICS (Ta=0 ~ 70 C, Vcc=5V±10% unless otherwise noted)
Symbol
Parameter
Condition
VIH High-level input voltage
VIL Low-level input voltage
VOH High-level output voltage IOH =-4mA
VOL Low-level output voltage IOL= 8mA
II
Input current
V I = 0~Vcc
I OZ
Output current in off-state
VI (S)= VIH
VO= 0~Vcc
Active supply current
I CC1 (TTL level)
VI (S)= VIL
other inputs V IH or VIL
Output-open(duty 100%)
Stand by current
I CC2 (TTL level)
I CC3 Stand by current
VI (S)= VIH
VI (S)= Vcc≥0.2V
other inputs VI≤0.2V
or VI≥Vcc-0.2V
Limits
Min Typ Max Unit
2.2
Vcc+0.3 V
-0.3
0.8 V
2.4
V
0.4 V
2 µA
10 µA
12ns cycle
AC 15ns cycle
DC
12ns cycle
AC
15ns cycle
DC
160
150 mA
90
100
75
70 mA
50
1
10 mA
MITSUBISHI
ELECTRIC
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