Pm49FL002 / 004
PMC
DEVICE OPERATIONS FLOWCHARTS (CONTINUED)
AUTOMATIC ERASE
Start
Write Chip, Sector,
or Block
Erase Command
Data = FFh?
or
I/O6 Stop Toggle?
Notes:
No
1. Please see Table 12 to Table 13 for
Sector/Block Address Tables.
Yes
2. Only erase one sector or one block per
erase operation.
Erasure
Completed
3. When the TBL# pin is pulled low (VIL),
the boot block will not be erased.
BLOCK ERASE COMMAND
SECTOR ERASE COMMAND
CHIP ERASE COMMAND
Load Data AAh
to
Load Data AAh
to
Load Data AAh
to
Address 5555h
Address 5555h
Address 5555h
Load Data 55h
to
Load Data 55h
to
Load Data 55h
to
Address 2AAAh
Address 2AAAh
Address 2AAAh
Load Data 80h
to
Load Data 80h
to
Load Data 80h
to
Address 5555h
Address 5555h
Address 5555h
Load Data AAh
to
Load Data AAh
to
Load Data AAh
to
Address 5555h
Address 5555h
Address 5555h
Load Data 55h
to
Load Data 55h
to
Load Data 55h
to
Address 2AAAh
Address 2AAAh
Address 2AAAh
Load Data 50h
to
Load Data 30h
to
Load Data 10h
to
Address 5555h
(1,2,3)
(3)
(1,2,3)
BA
SA
Chart 2. Automatic Erase Flowchart
Issue Date: December, 2003 Rev: 1.4
Programmable Microelectronics Corp.
32
PMC [ PMC-SIERRA, INC ]
