RC28F256 Intel Corporation, RC28F256 Datasheet - Page 78

• Manufacturer Part Number: RC28F256
• Description: Intel StrataFlash Embedded Memory
• Manufacturer: Intel Corporation

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1-Gbit P30 Family
Appendix A Write State Machine
Figure 34.
April 2005
78
Current Chip
Program
Erase
Word
OTP
Lock/CR Setup
BP
State
Ready
BP Load 1
BP Load 2
Suspend
BP Busy
Suspend
Suspend
(7)
Confirm
Setup
Setup
Setup
Setup
Busy
Busy
Busy
BP
BP
Figure 34
incoming commands. Only one partition can be actively programming or erasing at a time. Each
partition stays in its last read state (Read Array, Read Device ID, CFI Query or Read Status Register)
until a new command changes it. The next WSM state does not depend on the partition’s output state.
Write State Machine—Next State Table (Sheet 1 of 6)
Suspend
Array
Ready
(FFH)
Erase
Read
(2)
Program
through
(10H/40H)
Suspend
Program
Program
Setup in
Setup
Erase
Word
Word
Word Program Suspend
(3,4)
Ready (Lock Error)
Intel StrataFlash
Ready (Error)
Ready (Error)
BP Suspend
Figure 39
BP Setup in
BP Setup
Buffered
Program
Suspend
Order Number: 306666, Revision: 001
(E8H)
Erase
(BP)
Program Busy
Command Input to Chip and resulting Chip Next State
Erase Busy
BP Busy
BP Confirm if Data load into Program Buffer is complete; Else BP Load 2
Setup
show the command state transitions (Next State Table) based on
Erase
(20H)
Erase
Setup
Erase Suspend
(3,4)
Factory Pgm
®
BEFP Setup
Enhanced
Setup
Buffered
Embedded Memory (P30)
(80H)
(3, 4)
Word Program Busy
BE Confirm,
Erase Busy
Erase Busy
Confirm
Resume,
Program
BP Busy
BP Busy
(Unlock
Ready
Block)
(D0H)
Word
ULB,
Busy
BP Load 1
BP Load 2
OTP Busy
P/E
(8)
BP Suspend
BP / Prg /
Suspend
Suspend
Suspend
Program
Erase
(B0H)
Word
Erase
Status
Ready
Read
(70H)
Erase Suspend
Word Program Suspend
Ready (Lock Error)
Ready (Error)
Ready (Error)
BP Suspend
Register
Word Program Busy
Status
(50H)
Clear
Erase Busy
BP Busy
(5)
(90H, 98H)
ID/Query
Read
Datasheet
Lock, Unlock,
CR setup
Lock-down,
Lock/CR
Lock/CR
Suspend
Setup in
Setup
Erase
(60H)
(4)