IDT7025S17PF(1996) 查看數據表（PDF） - Integrated Device Technology
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IDT7025S17PF Datasheet PDF : 20 Pages
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IDT7025S/L
HIGH-SPEED 8K x 16 DUAL-PORT STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
TRUTH TABLE I – NON-CONTENTION READ/WRITE CONTROL
Inputs(1)
Outputs
CE R/W OE UB LB
SEM
I/O8-15 I/O0-7
Mode
H
X
X
X
X
H
High-Z High-Z Deselected: Power Down
X
X
X
H
H
H
High-Z High-Z Both Bytes Deselected
L
L
X
L
H
H
DATAIN High-Z Write to Upper Byte Only
L
L
X
H
L
H
High-Z DATAIN Write to Lower Byte Only
L
L
X
L
L
H
DATAIN DATAIN Write to Both Bytes
L
H
L
L
H
H DATAOUT High-Z Read Upper Byte Only
L
H
L
H
L
H
High-Z DATAOUT Read Lower Byte Only
L
H
L
L
L
H DATAOUT DATAOUT Read Both Bytes
X
X
H
X
X
X
High-Z High-Z Outputs Disabled
NOTE:
1. A0L — A12L are not equal to A0R — A12R.
TRUTH TABLE II – SEMAPHORE READ/WRITE CONTROL(1)
Inputs
CE R/W OE UB LB
SEM
Outputs
I/O8-15 I/O0-7
Mode
H
H
L
X
X
L DATAOUT DATAOUT Read Semaphore Flag Data Out
X
H
L
H
H
H
u
X
X
X
X
u
X
H
H
L DATAOUT DATAOUT Read Semaphore Flag Data Out
L
DATAIN DATAIN Write I/O0 into Semaphore Flag
L
DATAIN DATAIN Write I/O0 into Semaphore Flag
L
X
X
L
X
L
—
— Not Allowed
L
X
X
X
L
L
—
— Not Allowed
NOTE:
1. There are eight semaphore flags written to via I/O0 and read from I/O0 - I/O15. These eight semaphores are addressed by A0 - A2.
2683 tbl 03
2683 tbl 04
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Rating
Commercial Military Unit
VTERM(2) Terminal Voltage –0.5 to +7.0 –0.5 to +7.0 V
with Respect
to GND
TA
Operating
0 to +70 –55 to +125 °C
Temperature
TBIAS
Temperature
Under Bias
–55 to +125 –65 to +135 °C
TSTG
Storage
Temperature
–55 to +125 –65 to +150 °C
IOUT
DC Output
Current
50
50
mA
NOTES:
2683 tbl 05
1. Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other
conditions above those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
2. VTERM must not exceed Vcc + 0.5V for more than 25% of the cycle time
or 10ns maximum, and is limited to < 20 mA for the period over VTERM
> Vcc + 0.5V.
RECOMMENDED DC OPERATING
CONDITIONS
Symbol
Parameter
Min. Typ.
VCC
Supply Voltage
4.5 5.0
GND Supply Voltage
0
0
VIH
Input High Voltage
2.2 —
VIL
Input Low Voltage –0.5(1) —
NOTES:
1. VIL > -1.5V for pulse width less than 10ns.
2. VTERM must not exceed Vcc + 0.5V.
Max. Unit
5.5 V
0V
6.0(2) V
0.8 V
2683 tbl 06
CAPACITANCE(1)
(TA = +25°C, f = 1.0MHz)TQFP ONLY
Symbol
Parameter
Conditions(2) Max. Unit
CIN
Input Capacitance VIN = 3dV
9
pF
COUT
Output
Capacitance
VOUT = 3dV
10
pF
NOTES:
2683 tbl 07
1. This parameter is determined by device characterization but is not
production tested.
2. 3dV references the interpolated capacitance when the input and output
signals switch from 0V to 3V or from 3V to 0V.
6.16
4
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