1-Gbit P30 Family
9.2
Device Commands
Device operations are initiated by writing specific device commands to the Command User
Interface (CUI). See Table 20, “Command Bus Cycles” on page 50. Several commands are used to
modify array data including Word Program and Block Erase commands. Writing either command
to the CUI initiates a sequence of internally-timed functions that culminate in the completion of the
requested task. However, the operation can be aborted by either asserting RST# or by issuing an
appropriate suspend command.
Table 20.
Command Bus Cycles (Sheet 1 of 2)
First Bus Cycle
Second Bus Cycle
Bus
Mode
Command
Cycles
Oper
Addr(1)
Data(2)
Oper
Addr(1)
Data(2)
Read Array
1
≥ 2
≥ 2
2
Write
Write
Write
Write
Write
DBA
DBA
DBA
DBA
DBA
0xFF
0x90
0x98
0x70
0x50
-
-
DBA + IA
DBA + QA
DBA
-
ID
Read Device Identifier
CFI Query
Read
Read
Read
-
Read
QD
SRD
-
Read Status Register
Clear Status Register
1
-
0x40/
0x10
Word Program
2
Write
Write
Write
WA
WA
WA
Write
Write
Write
WA
WA
WA
WD
N - 1
0xD0
Program
Buffered Program(3)
> 2
> 2
0xE8
0x80
Buffered Enhanced Factory
Program (BEFP)(4)
Erase
Block Erase
2
Write
BA
0x20
Write
BA
0xD0
Program/Erase Suspend
Program/Erase Resume
Lock Block
1
1
2
2
2
Write
Write
Write
Write
Write
DBA
DBA
BA
0xB0
0xD0
0x60
0x60
0x60
-
-
-
Suspend
-
-
-
Write
Write
Write
BA
BA
BA
0x01
0xD0
0x2F
Block
Locking/
Unlocking
Unlock Block
BA
Lock-down Block
BA
April 2005
50
Intel StrataFlash® Embedded Memory (P30)
Order Number: 306666, Revision: 001
Datasheet
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