Rainbow-electronics DS1643P Manuel d'utilisateur télécharger pdf (Page 7)

DS1643/DS1643P

7 of 14

READ CYCLE, AC CHARACTERISTICS (0°C to 70°C; V

CC

= 5.0V ±=10%)

70 ns access 100 ns access

PARAMETER SYMBOL MIN MAX MIN MAX UNITS NOTES

Read Cycle Time t

RC

70 100 ns 4

Address Access Time t

AA

70 100 ns 4

CE and CE2 to DQ Low-Z

t

CEL

5 5 ns 4

CE Access Time

t

CEA

70 100 ns 4

CE2 Access Time t

CE2A

80 105 ns 4

CE and CE2 Data Off Time

t

CEZ

25 35 ns 4

OE to DQ Low-Z

t

OEL

5 5 ns 4

OE Access Time

t

OEA

35 55 ns 4

OE Data Off Time

t

OEZ

25 35 ns 4

Output Hold from Address t

OH

5 5 ns 4

READ CYCLE TIMING DIAGRAM

WRITE CYCLE, AC CHARACTERISTICS (0°C to 70°C; V

CC

= 5.0V ±=10%)

70 ns access 100 ns access

PARAMETER SYMBOL MIN MAX MIN MAX UNITS NOTES

Write Cycle Time t

WC

70 100 ns 4

Address Setup Time t

AS

0 0 ns 4

WE Pulse Width

t

WEW

50 70 ns 4

CE Pulse Width

t

CEW

60 75 ns 4

CE2 Pulse Width t

CE2W

65 85 ns 4

Data Setup Time t

DS

30 40 ns 4

Data Hold Time t

DH

0 0 ns 4

Address Hold Time t

AH

5 5 ns 4

WE Data Off Time

t

WEZ

25 35 ns 4

Write Recovery Time t

WR

5 5 ns 4

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Commentaires sur ces manuels

Pas de commentaire