CAT28F002 データシートの表示（PDF） - Catalyst Semiconductor => Onsemi

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CAT28F002

2 Megabit CMOS Boot Block Flash Memory

Catalyst Semiconductor => Onsemi 

CAT28F002

Figure 6 Block Erase Suspend/Resume Flowchart

START

WRITE B0H

WRITE 70H

READ STATUS

REGISTER

SR.7 = 1?

NO

YES

SR.6 = 1?

NO

YES

WRITE FFH

ERASE HAS

COMPLETED

Bus

Operation Command

Write

Erase

Suspend

Comments

Data = B0H

Write

Erase

Data = 70H

Status Register

Standby/

Ready

Read Status Register

Check SR.7

1 = Ready, 0 = Busy

Toggle OE or CE to Update

Status Register

Standby

Check SR.6

1 = Suspended

Write

Read Array

Data = FFH

DONE

NO

READING?

YES

WRITE D0H

CONTINUE

ERASE

Read

Read array data from block other

than that being erased.

Write

Erase Resume Data = D0H

13

Doc. No. 25072-00 2/98 F-1

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