DT28F160S570 Datasheet, PDF (31/51 Pages) Intel Corporation – 5 VOLT FlashFile™ MEMORY

E
28F160S5/28F320S5
Yes
Yes
Start
Bus
Operation
Command
Comments
Set Time-Out
Write
Write to
Buffer
Data = E8H
Block Address
Issue Write Command
No
E8H, Block Address
Read
XSR. 7 = Valid
Addr = X
Read Extended
Status Register
Standby
Check XSR. 7
1 = Write Buffer Available
0 = Write Buffer Not Available
XSR.7 =
0
1
Write Word or Byte
Count, Block Address
Write
Buffer Time-Out?
Write
(Note 1, 2)
Write
(Note 3, 4)
Write
(Note 5, 6)
Data = N = Word/Byte Count
N = 0 Corresponds to Count = 1
Addr = Block Address
Data = Write Buffer Data
Addr = Device Start Address
Data = Write Buffer Data
Addr = Device Address
Write Buffer Data,
Start Address
X=0
Check
X = N?
No
Abort Buffer Write Yes
Command?
No
Write Next Buffer Data,
Device Address
Write to Another
Block Address
Buffer Write to
Flash Aborted
X=X+1
Buffer Write to Flash
Confirm D0H
Write
Buffer Write
to Flash
Confirm
Data = D0H
Addr = X
Read
Status Register Data with the
Device Enabled, OE# Low
Updates SR
Addr = X
Standby
Check SR.7
1 = WSM Ready
0 = WSM Busy
Yes
1. Byte or word count values on DQ₀-DQ ₇ are loaded into the
count register. Count ranges on this device for byte mode are
N = 00H to 1FH and for word mode are N = 0000H to 000FH.
2. The device now outputs the status register when read (XSR is
no longer available).
3. Write Buffer contents will be programmed at the device start
address or destination flash address.
4. Align the start address on a Write Buffer boundary for
maximum programming performance (i.e., A₄ - A ₀ of the start
address = 0).
5. The device aborts the Write to Buffer command if the current
address is outside of the original block address.
6. The status register indicates an "improper command
sequence" if the Write to Buffer command is aborted. Follow this
with a Clear Status Register command.
Another Buffer
Write?
No
Read Status Register
0
SR.7 =
Full status check can be done after all erase and write sequences
complete. Write FFH after the last operation to reset the device to
read array mode.
Issue Read
Status Command
No
Suspend
Write Loop
Yes
Suspend Write?
1
Full Status
Check if Desired
Buffer Write to
Flash Complete
PRELIMINARY
Figure 6. Write to Buffer Flowchart
0609_06
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