AS8S512K32Q-17 Просмотр технического описания (PDF) - Austin Semiconductor
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AS8S512K32Q-17 Datasheet PDF : 14 Pages
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Austin Semiconductor, Inc.
SRAM
AS8S512K32
& AS8S512K32A
NOTES
1. All voltages referenced to V (GND).
SS
2. -2V for pulse width <20ns.
3. ICC is dependent on output loading and cycle rates.
unloaded, and f=
1
t RC(MIN)
HZ.
The specified value applies with the outputs
4. This parameter guaranteed but not tested.
5. Test conditions as specified with output loading as
shown in Fig. 1 unless otherwise noted.
6. tHZCS, tHZOE and tHZWE are specified with CL= 5pF as in Fig. 2.
Transition is measured +/- 200 mV typical from steady state
voltage, allowing for actual tester RC time constant.
7. At any given temperature and voltage condition,
tHZCS, is less than tLZCS, and tHZWE is less than tLZWE.
8. WE\ is HIGH for READ cycle.
9. Device is continuously selected. Chip selects and output
enable are held in their active state.
10. Address valid prior to or coincident with latest occurring
chip enable.
11. tRC= READ cycle time.
12. Chip enable (CS\) and write enable (WE\) can initiate and
terminate a WRITE cycle.
13. ICC is for 32 bit mode.
LOW POWER CHARACTERISTICS (L Version Only)
DESCRIPTION
CONDITIONS
SYMBOL MIN
VCC for Retention Data
VDR
2
Data Retention Current
All Inputs @ Vcc + 0.2V
or Vss + 0.2V,
CS\ = Vcc + 0.2V
VCC = 2V
VCC = 3V
ICCDR
ICCDR
Chip Deselect to Data
Retention Time
tCDR
0
Operation Recovery Time
* -12 and -15 have a 32mA limit.
tR
tRC
MAX
20
28*
UNITS
V
mA
mA
ns
NOTES
4
ns
4, 11
LOW VCC DATA RETENTION WAVEFORM
VCC
tCDR
CS\ 1-4
111111112222222233333333444444445555555566666666777777778888888899999999000000001111111122222222333333334444444455555555666666667777777788888888
DATA RETENTION MODE
4.5V
4.5V
VDR>2V
VDR
tR
1111111122222222333333334444444455555555666666667777777788888888999999990000000011111111222222223333333344444411111144115555552552222222666666333333366377777744444447745888888885555555
AS8S512K32 & AS8S512K32A
Rev. 6.0 6/05
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
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