AT25128B datasheet(4/24 Pages) ATMEL | serial electrically-erasable programmable read only memory

Part No.	AT25128B

Description	serial electrically-erasable programmable read only memory

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Manufacturer	ATMEL [ATMEL Corporation]

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4

8698B–SEEPR–3/10

AT25128B/256B

Table 1-3.

AC Characteristics

Applicable over recommended operating range from T

A = – 40°C to + 85°C, VCC = As Specified,

CL = 1 TTL Gate and 30 pF (unless otherwise noted)

Symbol

Parameter

Voltage

Min

Max

Units

f

SCK

SCK Clock Frequency

4.5–5.5

2.5–5.5

1.8–5.5

0

20

10

5

MHz

t

RI

Input Rise Time

4.5–5.5

2.5–5.5

1.8–5.5

2

µs

t

FI

Input Fall Time

4.5–5.5

2.5–5.5

1.8–5.5

2

µs

t

WH

SCK High Time

4.5–5.5

2.5–5.5

1.8–5.5

20

40

80

ns

t

WL

SCK Low Time

4.5–5.5

2.5–5.5

1.8–5.5

20

40

80

ns

t

CS

CS High Time

4.5–5.5

2.5–5.5

1.8–5.5

100

200

ns

t

CSS

CS Setup Time

4.5–5.5

2.5–5.5

1.8–5.5

100

200

ns

t

CSH

CS Hold Time

4.5–5.5

2.5–5.5

1.8–5.5

100

200

ns

t

SU

Data In Setup Time

4.5–5.5

2.5–5.5

1.8–5.5

5

10

20

ns

t

H

Data In Hold Time

4.5–5.5

2.5–5.5

1.8–5.5

5

10

20

ns

t

HD

HOLD Setup Time

4.5–5.5

2.5–5.5

1.8–5.5

5

10

20

ns

t

CD

HOLD Hold Time

4.5–5.5

2.5–5.5

1.8–5.5

5

10

20

ns

t

V

Output Valid

4.5–5.5

2.5–5.5

1.8–5.5

0

20

40

80

ns

t

HO

Output Hold Time

4.5–5.5

2.5–5.5

1.8–5.5

0

ns

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