RC28F256 Intel Corporation, RC28F256 Datasheet - Page 85

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

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Appendix B Flowcharts
Figure 40.
Datasheet
Word Program Flowchart
Word Address
Word Address
Read Status
Read Status
Write 0x40,
Write Data,
Full Status
(if desired)
Successful
Complete
Register
Program
Register
Program
SR[4] =
SR[7] =
SR[3] =
SR[1] =
Check
Start
1
0
0
0
0
1
1
1
Intel StrataFlash
(Setup)
(Confirm)
Order Number: 306666, Revision: 001
Protect Error
V
Suspend?
Program
PP
Device
Error
Error
Range
No
FULL STATUS CHECK PROCEDURE
WORD PROGRAM PROCEDURE
Yes
Program
Suspend
®
Loop
Embedded Memory (P30)
Operation
Repeat for subsequent Word Program operations.
Full Status Register check can be done after each program, or
after a sequence of program operations.
Write 0xFF after the last operation to set to the Read Array
state.
Operation
If an error is detected, clear the Status Register before
continuing operations - only the Clear Staus Register
command clears the Status Register error bits.
Write
Write
Read
Bus
Bus
Idle
Idle
Idle
Idle
Command
Command
Program
Setup
None
None
None
None
None
Data
Data = 0x40
Addr = Location to program
Data = Data to program
Addr = Location to program
Status register data
Check SR[7]
1 = WSM Ready
0 = WSM Busy
Check SR[3]:
1 = V
Check SR[4]:
1 = Data Program Error
Check SR[1]:
1 = Block locked; operation aborted
PP
Error
Comments
Comments
1-Gbit P30 Family
April 2005
85