Rainbow-electronics DS1315 Manual do Utilizador descarregar pdf (Página 12)

DS1315

041697 12/22

AC ELECTRICAL OPERATING CHARACTERISTICS

ROM/RAM

= GND (0°C to 70°C; V

CC

= 3.3 ± 10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Read Cycle Time t

RC

120 ns

CEI Access Time t

CO

100 ns

OE Access Time t

OE

100 ns

CEI to Output Low Z t

COE

5 ns

OE to Output Low Z t

OEE

5 ns

CEI to Output High Z t

OD

40 ns

OE to Output High Z t

ODO

40 ns

Read Recovery t

RR

20 ns

Write Cycle t

WC

120 ns

Write Pulse Width t

WP

100 ns

Write Recovery t

WR

20 ns 4

Data Setup t

DS

45 ns 5

Data Hold Time t

DH

0 ns 5

CEI Pulse Width t

CW

105 ns

OE Pulse Width t

OW

100 ns

RST Pulse Width t

RST

120 ns

CEI Propagation Delay t

PD

10 ns 2, 3, 12

CEI High to Power–Fail t

PF

0 ns 12

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 21 22

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