UVEPROM

SMJ27C256

Austin Semiconductor, Inc.

SMJ27C256

Rev. 1.0 9/01

Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.

6

CAPACITANCE OVER RECOMMENDED RANGES OF SUPPLY VOLTAGE AND OPERATING

FREE-AIR TEMPERATURE, f = 1MHz*

* Capacitance measurements are made on a sample basis only.

** Typical values are at T

A

= 25°C and nominal voltages.

SWITCHING CHARACTERISTICS OVER RECOMMENDED RANGES OF SUPPLY VOLTAGE

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 t

dis

except during programming.

3. Value calculated from 0.5V delta to measured output level. This parameter is only sampled and not 100% tested.

TEST CONDITIONS

TYP**

MAX

UNIT

Input capacitance

610

pF

Output capacitance

10

14

pF

PARAMETER

MIN MAX MIN MAX

Access time from address

150

170

ns

Access time from E\

150

170

ns

70

70

ns

Disable time of output from G\ or E\,

whichever occurs first

3

055

0

55

ns

Output data valid time after change of

address, E\, or G\, whichever occurs first

3

00

ns

PARAMETER

-15

see Figure 2

-17

UNIT

TEST

CONDITIONS

1, 2

MIN MAX MIN MAX MIN MAX

Access time from address

200

250

300

ns

Access time from E\

200

250

300

ns

75

100

120

ns

Disable time of output from G\ or E\,

whichever occurs first

3

0

60

0

60

0

105

ns

Output data valid time after change of

address, E\, or G\, whichever occurs first

3

000

ns

PARAMETER

-20

-25

see Figure 2

-30

UNIT

TEST

CONDITIONS

1, 2

SWITCHING CHARACTERISTICS FOR PROGRAMMING: V

Pulse), T

MIN

MAX

UNIT

0

130

ns

150

ns

PARAMETER