AS27C256-30ECAI datasheet(6/13 Pages) AUSTIN

6 / 13 page

UVEPROM

AS27C256

Rev. 2.0 7/06

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

Austin Semiconductor, Inc.

*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

operation section of this specification is not implied.

Expo-

sure to absolute maximum rating conditions for extended peri-

ods may affect reliability.

** All voltage values are with respect to GND.

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage Range, V

**...........................-0.6V to +7.0V

Supply Voltage Range, V

**...............................-0.6V to +13.5V

Input Voltage Range, All inputs except A9

**..-0.6V to +6.0V

A9.....-0.6V to +13.5V

Output Voltage Range**...............................-0.6V to V

+.6V

Minimum Operating Free-air Temperature, T

..............-55°C

Maximum Operating Case Temperature, T

...................125°C

Storage Temperature Range, T

stg

.....................-65°C to 150°C

RECOMMENDED OPERATING CONDITIONS

NOTES:

1. V

CC must be applied before or at the same time as VPP and removed after or at the same time as VPP.

The deivce must not be inserted into or

removed from the board when V

PP or VCC is applied.

2. V

PP can be connected to VCC directly (except in the program mode).

CC supply current in this case would be ICC2 + IPP1.

ELECTRICAL CHARACTERISTICS OVER RECOMMENDED RANGES OF SUPPLY VOLTAGE

AND OPERATING FREE-AIR TEMPERATURE

NOTES:

1. Typical values are at T

=25°C and nominal voltages.

2. This parameter has been characterized at 25°C and is not tested.

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOH

IOH = -400µA

2.4

VOL

IOL = 2.1mA

0.4

VI = 0V to 5.5V

±1

µA

VO = 0V to VCC

±5

µA

IPP1

VPP = VCC = 5.5V

100

µA

IPP2

VPP = 13V

TTL-Input Level

VCC = 5.5V, E\=VIH

1mA

CMOS-Input Level

VCC = 5.5V, E\=VCC

300

µA

ICC2

VCC supply current (active)

'27C256-12

'27C256-15

'27C256-17

'27C256-20,-25

E\=VIL, VCC=5.5V

tcycle = minimum, outputs

open

PARAMETER

ICC1

VCC supply current (standby)

High-level output voltage

Low-level output voltage

Input current (leakage)

VPP supply current

Output current (leakage)

VPP supply current (during program pulse)

MIN

TYP

MAX

4.5

5.5

6.25

6.5

VCC-0.6

12.5

12.75

TTL inputs

2.2

VCC+.6

CMOS inputs

VCC-0.2

VCC+.6

TTL inputs

-0.5

0.8

CMOS inputs

-0.5

0.2

VID

11.5

12.5

-55

+125

VCC

Read Mode

FLASHRITE Pulse programming algorithm

Supply Voltage

Read Mode

FLASHRITE Pulse programming algorithm

VPP

High-level input voltage

VIH

Supply Voltage

VIL

Low-level input voltage

Operating free-air temperature

Operating case temperature

Voltage level on A9 for signature mode

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