4 ac characteristics – Rainbow Electronics AT45DB642 User Manual

Page 48

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48

AT45DB321E [PRELIMINARY DATASHEET]

8784B–DFLASH–11/2012

18.4 AC Characteristics

Note:

1. Values are based on device characterization, not 100% tested in production.

Symbol

Parameter

AT45DB321E

2.3V Version

AT45DB321E

2.5V Version

Min

Max

Min

Max

Units

f

SCK

SCK Frequency

70

85

MHz

f

CAR1

SCK Frequency for Continuous Read

70

85

MHz

f

CAR2

SCK Frequency for Continuous Read
(Low Frequency)

40

50

MHz

f

CAR3

SCK Frequency for Continuous Read
(Low Power Mode – 01h Opcode)

10

10

MHz

t

WH

SCK High Time

6.4

5.2

ns

t

WL

SCK Low Time

6.4

5.2

ns

t

SCKR

(1)

SCK Rise Time, Peak-to-peak

0.1

0.1

V/ns

t

SCKF

(1)

SCK Fall Time, Peak-to-peak

0.1

0.1

V/ns

t

CS

Minimum CS High Time

30

30

ns

t

CSS

CS Setup Time

5

5

ns

t

CSH

CS Hold Time

5

5

ns

t

SU

Data In Setup Time

2

2

ns

t

H

Data In Hold Time

1

1

ns

t

HO

Output Hold Time

0

0

ns

t

DIS

Output Disable Time

8

6

ns

t

V

Output Valid

8

6

ns

t

WPE

WP Low to Protection Enabled

1

1

μs

t

WPD

WP High to Protection Disabled

1

1

μs

t

LOCK

Freeze Sector Lockdown Time (from CS High)

100

85

μs

t

EUDPD

CS High to Ultra-Deep Power-Down

3

3

μs

t

CSLU

Minimum CS Low Time to Exit Ultra-Deep Power-Down

20

20

ns

t

XUDPD

Exit Ultra-Deep Power-Down Time

120

120

μs

t

EDPD

CS High to Deep Power-Down

3

3

μs

t

RDPD

Resume from Deep Power-Down Time

35

35

μs

t

XFR

Page to Buffer Transfer Time

200

200

μs

t

COMP

Page to Buffer Compare Time

220

220

μs

t

RST

RESET Pulse Width

10

10

μs

t

REC

RESET Recovery Time

1

1

μs

t

SWRST

Software Reset Time

30

30

μs

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