CAT28F001 CATALYST [Catalyst Semiconductor], CAT28F001 Datasheet - Page 13

• Manufacturer Part Number: CAT28F001
• Description: 1 Megabit CMOS Boot Block Flash Memory
• Manufacturer: CATALYST [Catalyst Semiconductor]

Figure 6 Block Erase Suspend/Resume Flowchart
READ STATUS
WRITE B0H
WRITE FFH
WRITE D0H
REGISTER
READING?
CONTINUE
SR.7 = 1?
SR.6 = 1?
ERASE
START
DONE
YES
YES
YES
NO
NO
NO
COMPLETED
ERASE HAS
13
Bus
Operation Command
Write
Standby/
Ready
Standby
Write
Read
Write
Erase
Suspend
Read Array
Erase Resume
Comments
Data = B0H
Read Status Register
Check SR.7
1 = Ready, 0 = Busy
Toggle OE or CE to Update
Status Register
Check SR.6
1 = Suspended
Data = FFH
Read array data from block other
than that being erased.
Data = D0H
Doc. No. 25071-00 2/98 F-1
CAT28F001