Rainbow-electronics DS1747P Manual do Utilizador descarregar pdf (Página 10)

DS1747/DS1747P

10 of 18

WRITE CYCLE, AC CHARACTERISTICS

(Over the Operating Range; V

CC

= 5.0V ± 10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Write Cycle Time t

WC

70 ns

Address Setup Time t

AS

0ns

WE Pulse Width

t

WEW

50 ns

CE Pulse Width

t

CEW

60 ns

Data Setup Time t

DS

30 ns

Data Hold Time t

DH1

0ns8

Data Hold Time t

DH2

0ns9

Address Hold Time t

AH1

5ns8

Address Hold Time t

AH2

5ns9

WE Data Off Time

t

WEZ

25 ns

Write Recovery Time t

WR

5ns

WRITE CYCLE, AC CHARACTERISTICS

(Over the Operating Range; V

CC

= 3.3V ± 10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Write Cycle Time t

WC

120 ns

Address Setup Time t

AS

0 120 ns

WE Pulse Width

t

WEW

100 ns

CE Pulse Width

t

CEW

110 ns

CE and CE2 Pulse Width

t

CEW

110 ns

Data Setup Time t

DS

80 ns

Data Hold Time t

DH1

0ns8

Data Hold Time t

DH2

0ns9

Address Hold Time t

AH1

0ns8

Address Hold Time t

AH2

10 ns 9

WE Data Off Time

t

WEZ

40 ns

Write Recovery Time t

WR

10 ns

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