UVEPROM
SMJ27C256
Austin Semiconductor, Inc.
CAPACITANCE OVER RECOMMENDED RANGES OF SUPPLYVOLTAGE AND OPERATING
FREE-AIRTEMPERATURE, f = 1MHz*
PARAMETER
TEST CONDITIONS TYP**
MAX
UNIT
6
10
pF
Ci
VI = 0V
Input capacitance
10
14
pF
Co
VO = 0V
Output capacitance
* 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 SUPPLYVOLTAGE
AND OPERATING FREE-AIRTEMPERATURE1,2
TEST
CONDITIONS1, 2 MIN MAX MIN MAX
-15
-17
PARAMETER
UNIT
Access time from address
Access time from E\
150
150
70
170
170
70
ns
ns
ns
ta(A)
ta(E)
Output enable time from G\
ten(G)R
see Figure 2
Disable time of output from G\ or E\,
whichever occurs first3
Output data valid time after change of
address, E\, or G\, whichever occurs first3
tdis
0
0
55
0
0
55
ns
ns
tv(A)
TEST
-20
-25
-30
PARAMETER
UNIT
CONDITIONS1, 2 MIN MAX MIN MAX MIN MAX
Access time from address
Access time from E\
200
200
75
250
250
100
300
300
120
ns
ns
ns
ta(A)
ta(E)
Output enable time from G\
ten(G)R
see Figure 2
Disable time of output from G\ or E\,
whichever occurs first3
Output data valid time after change of
address, E\, or G\, whichever occurs first3
tdis
0
0
60
0
0
60
0
0
105
ns
ns
tv(A)
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.
SWITCHING CHARACTERISTICS FOR PROGRAMMING:VCC = 6.5V and VPP = 13V (SNAP!
Pulse),TA = 25°C
PARAMETER
MIN
MAX
UNIT
Output disable time from G\
0
130
ns
tdis(G)
Output enable time from G\
150
ns
ten(G)W
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
SMJ27C256
Rev. 1.0 9/01
6
AUSTIN [ AUSTIN SEMICONDUCTOR ]
