AT25128 datasheet(4/22 Pages) ATMEL

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AT25128/256

0872O–SEEPR–03/05

Table 4. AC Characteristics

Applicable over recommended operating range from T

AI = –40°C to + 85°C, TAE = –40°C to +125°C, VCC = As Specified,

CL = 1 TTL Gate and 100 pF (unless otherwise noted)

Symbol

Parameter

Voltage

Min

Max

Units

fSCK

SCK Clock Frequency

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

3.0

2.1

0.5

MHz

tRI

Input Rise Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

µs

tFI

Input Fall Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

µs

tWH

SCK High Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

150

200

800

tWL

SCK Low Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

150

200

800

tCS

CS High Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

250

1000

tCSS

CS Setup Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

100

250

1000

tCSH

CS Hold Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

150

250

1000

tSU

Data In Setup Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

100

Data In Hold Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

100

tHD

Hold Setup Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

100

400

tCD

Hold Hold Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

200

300

400

Output Valid

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

150

200

800

tHO

Output Hold Time

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

tLZ

Hold to Output Low Z

4.5 – 5.5

2.7 – 5.5

1.8 – 5.5

100

200

300

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