V61C518256 datasheet(5/12 Pages) MOSEL

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MOSEL VITELIC

V61C518256

V61C518256 Rev. 0.3 July 1998

Data Retention Characteristics

NOTES:

tRC = Read Cycle Time

TA = +25°C.

Low VCC Data Retention Waveform

Symbol

Parameter

Min.

Typ.(2)

Max.

Units

VDR

VCC for Data Retention

³ VCC – 0.2V

2.0

—

5.5

ICCDR

Data Retention Current

VDR = 3.0V, CE ³ VDR – 0.2V

Com’l

—

150

Ind.

—

200

tCDR

Chip Deselect to Data Retention Time

—

Operation Recovery Time (see Retention Waveform)

tRC

(1)

——

VCC

518256-07

Data Retention Mode

VDR

2.2V

4.5V

tCDR

VDR ³ 2V

4.5V

AC Test Conditions

AC Test Loads and Waveforms

Key to Switching Waveforms

Input Pulse Levels

0 to 3V

Input Rise and Fall Times

3 ns

Timing Reference Levels

1.5V

Output Load

see below

+5V

480

255

* Includes scope and jig capacitance

I/O Pin

CL = 30 pF*

+5V

255

Output load for tCLZ, tCHZ, tOHZ, tOLZ, tWZ, tOW

I/O Pin

5 pF*

518256-06

WAVEFORM

INPUTS

OUTPUTS

MUST BE

STEADY

WILL BE

STEADY

MAY CHANGE

FROM H TO L

WILL BE

CHANGING

FROM H TO L

MAY CHANGE

FROM L TO H

WILL BE

CHANGING

FROM L TO H

DON'T CARE:

ANY CHANGE

PERMITTED

CHANGING:

STATE

UNKNOWN

DOES NOT

APPLY

CENTER

LINE IS HIGH

IMPEDANCE

“OFF” STATE

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