Rainbow-electronics DS1245Y_AB Manual do Utilizador descarregar pdf (Página 5)

DS1245Y/AB

041497 5/12

(V

CC

=5V ± 5% for DS1245AB)

AC ELECTRICAL CHARACTERISTICS (t

A

: See Note 10) (V

CC

=5V ± 10% for DS1245Y)

PARAMETER SYMBOL

DS1245Y-100

DS1245AB-100

DS1245Y-120

DS1245AB-120

UNITS NOTES

PARAMETER

SYMBOL

MIN MAX MIN MAX

UNITS

NOTES

Read Cycle Time t

RC

100 120 ns

Access Time t

ACC

100 120 ns

OE to Output Valid t

OE

50 60 ns

CE to Output Valid t

CO

100 120 ns

OE or CE to Output Active t

COE

5 5 ns 5

Output High Z from Deselection t

OD

35 35 ns 5

Output Hold from Address Change t

OH

5 5 ns

Write Cycle Time t

WC

100 120 ns

Write Pulse Width t

WP

75 90 ns 3

Address Setup time t

AW

0 0 ns

Write Recovery Time t

WR1

t

WR2

5

15

5

15

ns

ns

12

13

Output High Z from WE t

ODW

35 35 ns 5

Output Active from WE t

OEW

5 5 ns 5

Data Setup Time t

DS

40 50 ns 4

Data Hold Time t

DH1

t

DH2

0

10

0

10

ns

ns

12

13

1 2 3 4 5 6 7 8 9 10 11 12

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