AT27C256R-70PJ

更新时间： 2024-01-01 01:17:55

品牌	Logo	应用领域
爱特美尔 - ATMEL		可编程只读存储器电动程控只读存储器
页数	文件大小	规格书
9页	254K
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AT27C256R-70PJ 数据手册

AT27C256R

Absolute Maximum Ratings*

Block Diagram

Temperature Under Bias ................ -55°C to +125°C

Storage Temperature...................... -65°C to +150°C

Voltage on Any Pin with

(1)

Respect to Ground.........................-2.0V to +7.0V

Voltage on A9 with

Respect to Ground ...................... -2.0V to +14.0V

(1)

Supply Voltage with

(1)

Respect to Ground.......................-2.0V to +14.0V

*NOTICE: Stresses beyond those listed under “Absolute Maxi-

mum 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 beyond those indi-

cated in the operational sections of this specification is not

implied. Exposure to absolute maximum rating conditions

for extended periods may affect device reliability.

Note: 1. Minimum voltage is -0.6V dc which may undershoot

to -2.0V for pulses of less than 20 ns. Maximum out-

put pin voltage is V_CC+ 0.75V dc which may over-

shoot to +7.0V for pulses of less than 20 ns.

Operating Modes

Mode \ Pin

Read

Outputs

OUT

(1)

Output Disable

Standby

High Z

(1)

(2)

Rapid Program

(1)

(2)

PGM Verify

OUT

(2)

Optional PGM Verify

(1)

(2)

PGM Inhibit

High Z

(3)

A9 = V

Identification

Code

(4)

Product Identification

A0 = V or V

A1 - A14 = V

Notes: 1. X can be V_ILor V_IH.

4. Two identifier bytes may be selected. All Ai inputs

are held low (V_IL), except A9 which is set to V_Hand A0

which is toggled low (V_IL) to select the Manufacturer’s Identi-

fication byte and high (V_IH) to select the Device Code byte.

2. Refer to Programming characteristics.

3. V_H= 12.0 ± 0.5V.

3-127

1 234 5 6 7...9

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