MSM58321 查看數據表（PDF） - Oki Electric Industry

零件编号

产品描述 (功能)

生产厂家

MSM58321

REAL TIME CLOCK/CALENDAR

Oki Electric Industry 

MSM58321

(3) WRITE & 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

Data setup time

tDS

Write pulse width

tWW

Data hold time

tDH

Read access time

tRA

Read delay time

tDD

Read inhibit time

tRI

Note 1.

tRA

=

1

µs

+

CR

ln

(

VDD

VDD

– VIH

min

)

Condition

–

–

–

–

–

–

–

–

–

–

–

¡ Semiconductor

Min.

0

0

0

0.5

0.1

0

2

0

–

–

0

(VDD = 5V ±5%, Ta = 25°C)

Typ.

Max. Unit

–

–

µs

–

–

µs

–

–

µs

–

–

µs

–

–

µs

–

–

µs

–

–

µs

–

–

µs

– see Note 1 µs

–

1

µs

–

–

µs

DATA INVALID

DATA VALID

H

CS1

CS2

L

D0 ~ D3

(ADDRESS/DATA)

ADDRESS WRITE ,,,,,,,,,

WRITE

tRI

tCS tAS tAW tAH tDS tWW tDH tRA

,,,,,,,,

,,,,,,

tDD

tCH ,

,,,,,,,,,,, High Impedance

READ

IC internal

ADDRESS

IC internal DATA

ADDRESS DATA WRITE DATA READ

Read & Write Cycle

12

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