5962-8606301XA データシートの表示（PDF） - Austin Semiconductor
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5962-8606301XA Datasheet PDF : 13 Pages
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Austin Semiconductor, Inc.
UVEPROM
AS27C256
CAPACITANCE OVER RECOMMENDED RANGES OF SUPPLY VOLTAGE AND OPERAT-
ING FREE-AIR TEMPERATURE, f = 1MHz*
PARAMETER
TEST CONDITIONS TYP** MAX UNIT
Ci Input capacitance
VI = 0V
6
10
pF
Co Output capacitance
VO = 0V
10
14
pF
* Capacitance measurements are made on a sample basis only.
** Typical values are at TA = 25°C and nominal voltages.
SWITCHING CHARACTERISTICS OVER RECOMMENDED RANGES OF SUPPLY VOLT-
AGE AND OPERATING FREE-AIR TEMPERATURE1,2
PARAMETER
TEST
-12
-15
CONDITIONS1, 2 MIN MAX MIN MAX UNIT
ta(A) Access time from address
120
150 ns
ta(E) Access time from E\
120
150 ns
ten(G)R Output enable time from G\
Disable time of output from G\ or E\,
tdis whichever occurs first3
Output data valid time after change of
tv(A) address, E\, or G\, whichever occurs first3
see Figure 2
40
50 ns
0 30 0 30 ns
0
0
ns
PARAMETER
TEST
-17
-20
-25
CONDITIONS1, 2 MIN MAX MIN MAX MIN MAX
ta(A) Access time from address
ta(E) Access time from E\
170
200
250
170
200
250
ten(G)R Output enable time from G\
Disable time of output from G\ or E\,
tdis whichever occurs first3
Output data valid time after change of
tv(A) address, E\, or G\, whichever occurs first3
see Figure 2
50
60
60
0 40 0 50 0 60
0
0
0
NOTES:
1.Timing measurements are made at 2V for logic high and 0.8V for logic low (see figure 2).
2. Common test conditions apply for tdis except during programming.
3. Value calculated from 0.5V delta to measured output level. This parameter is only sampled and not 100% tested.
UNIT
ns
ns
ns
ns
ns
SWITCHING CHARACTERISTICS FOR PROGRAMMING: VCC = 6.5V and VPP = 12.75V (AMD
FLASHRITE ALGO), TA = 25°C
PARAMETER
MIN
MAX UNIT
tdis(G) Output disable time from G\
0
130
ns
ten(G)W Output enable time from G\
150
ns
AS27C256
Rev. 2.0 7/06
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
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