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Rainbow Electronics DS1220Y User Manual

Page 4

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DS1220Y

091295 4/8

AC ELECTRICAL CHARACTERISTICS

(0

°

C to 70

°

C; V

CC

=5.0V

±

10%)

PARAMETER

SYM

DS1220Y-100

DS1220Y-120

DS1220Y-150

DS1220Y-200

UNITS

NOTE

PARAMETER

SYM

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

UNITS

NOTE

Read Cycle Time

t

RC

100

120

150

200

ns

Access Time

t

ACC

100

120

150

200

ns

OE to Output
Valid

t

OE

50

60

70

100

ns

CE to Output
Valid

t

CO

100

120

150

200

ns

OE or CE to
Output Active

t

COE

5

5

5

5

ns

5

Output High Z
from Deselection

t

OD

35

35

35

35

ns

5

Output Hold from
Address Change

t

OH

5

5

5

5

ns

Write Cycle Time

t

WC

100

120

150

200

ns

Write Pulse Width

t

WP

75

90

100

150

ns

3

Address Setup
Time

t

AW

0

0

0

0

ns

Write Recovery
Time

t

WR1

t

WR2

0

10

0

10

0

10

0

10

ns
ns

11

12

Output High Z
from WE

t

ODW

35

35

35

35

ns

5

Output Active
from WE

t

OEW

5

5

5

5

ns

5

Data Setup Time

t

DS

40

50

60

80

ns

4

Data Hold Time

t

DH1

t

DH2

0

10

0

10

0

10

0

10

ns
ns

11

12