M87C257

Maximum rating

11/22

3

Maximum rating

Stressing the device above the rating listed in the Absolute Maximum Ratings table may

cause permanent damage to the device. These are stress ratings only and operation of the

device at these or any other conditions above those indicated in the Operating sections of

this specification is not implied. Exposure to Absolute Maximum Rating conditions for

extended periods may affect device reliability. Refer also to the STMicroelectronics SURE

Program and other relevant quality documents.

1.

Table 2.

Absolute maximum ratings

Symbol

Parameter

Value

Unit

1.

Depends on range.

–40 to 125

°C

Temperature Under Bias

–50 to 125

°C

Storage Temperature

–65 to 150

°C

(2)

2.

Minimum DC voltage on Input or Output is –0.5V with possible undershoot to –2.0V for a period less than

than 20ns.

Input or Output Voltage (except A9)

–2 to 7

V

Supply Voltage

–2 to 7

V

(2)

A9 Voltage

–2 to 13.5

V

Program Supply Voltage

–2 to 14

V

Table 3.

Operating modes

Mode

E

G

A9

Q7-Q0

Read (Latched Address)

Data Out

Read (Applied Address)

Data Out

Output Disable

XX

Hi-Z

Program

Data In

Verify

Data Out

Program Inhibit

Hi-Z

Standby

XX

X

Hi-Z

Electronic Signature

Codes

Table 4.

Electronic signature

Identifier

A0

Q7

Q6

Q5

Q4

Q3

Q2

Q1

Q0

Hex Data

Manufacturer’s Code

0

010000

0

20h

Device Code

1

000000

0

80h