MSM58321 Просмотр технического описания (PDF) - Oki Electric Industry

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Компоненты Описание

производитель

MSM58321

REAL TIME CLOCK/CALENDAR

Oki Electric Industry 

¡ Semiconductor

(2) READ mode

Rating

Symbol

CS setup time

tCS

CS hold time

tCH

Address setup time

tAS

Address write pulse width

tAW

Address hold time

tAH

Read access time

tRA

Read delay time

tDD

Read inhibit time

tRI

Note 1.

tRA

=

1

µs

+

CR

ln

(

VDD

VDD

– VIH

min

)

Condition

–

–

–

–

–

–

–

–

MSM58321

Min.

0

0

0

0.5

0.1

–

–

0

(VDD = 5V ±5%, Ta = 25°C)

Typ. Max. Unit

–

–

µs

–

–

µs

–

–

µs

–

–

µs

–

–

µs

– see Note 1 µs

–

1

µs

–

–

µs

H

CS1

CS2

L

D0 ~ D3

(ADDRESS/DATA)

ADDRESS WRITE ,,,,,,,,,

READ

tRI DATA VALID

tCS tAS tAW tRH tRA

tDD

,,,,,,,,

DATA INVALID

,,,,,,,,,

tCH

,,,,,,,,,,,

High Impedance

,,,,,,,,,

ADDRESS

DATA

Read Cycle

Note: ADDRESS WRITE and READ inputs are activated by the level, not by the edge.

11

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