306666-11 Datasheet, PDF (45/99 Pages) Numonyx B.V – Numonyx StrataFlash Embedded Memory

P30
9.2
Device Commands
Device operations are initiated by writing specific device commands to the Command
User Interface (CUI). See Table 23, “Command Bus Cycles” on page 45. 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 23: Command Bus Cycles
Mode
Command
Bus
Cycles
First Bus Cycle
Oper Addr⁽¹⁾ Data⁽²⁾
Second Bus Cycle
Oper
Addr⁽¹⁾
Data⁽²⁾
Read
Program
Read Array
Read Device Identifier
CFI Query
Read Status Register
Clear Status Register
Word Program
Buffered Program⁽³⁾
Buffered Enhanced Factory
Program (BEFP)⁽⁴⁾
1
Write
DnA
0xFF
-
-
-
≥2
Write
DnA
0x90
Read DBA + IA
ID
≥2
Write
DnA
0x98
Read DBA + QA
QD
2
Write
DnA
0x70
Read
DnA
SRD
1
Write
DnA
0x50
-
-
-
0x40/
2
Write
WA
Write
WA
0x10
>2
Write
WA
0xE8
Write
WA
WD
N-1
>2
Write
WA
0x80
Write
WA
0xD0
Erase
Block Erase
2
Write
BA
0x20
Write
BA
0xD0
Program/Erase Suspend
1
Write
DnA
0xB0
-
-
-
Suspend
Program/Erase Resume
1
Write
DnA
0xD0
-
-
-
Block
Locking/
Unlocking
Lock Block
Unlock Block
Lock-down Block
2
Write
BA
0x60
Write
BA
2
Write
BA
0x60
Write
BA
2
Write
BA
0x60
Write
BA
0x01
0xD0
0x2F
Program Protection Register
2
Write
PRA
0xC0
Write
PRA
PD
Protection
Program Lock Register
2
Write
LRA
0xC0
Write
LRA
LRD
Configuration ^{Program Read Configuration}
Register
2
Write
RCD
0x60
Write
RCD
0x03
Notes:
1.
First command cycle address should be the same as the operation’s target address.
DBA = Device Base Address (NOTE: needed for dual-die 512 Mb device)
DnA = Address within the device.
IA = Identification code address offset.
QA = CFI Query address offset.
WA = Word address of memory location to be written.
BA = Address within the block.
PRA = Protection Register address.
LRA = Lock Register address.
RCD = Read Configuration Register data on QUAD+ A[15:0] or EASY BGA A[16:1].
2.
ID = Identifier data.
QD = Query data on DQ[15:0].
SRD = Status Register data.
WD = Word data.
N = Word count of data to be loaded into the write buffer.
PD = Protection Register data.
LRD = Lock Register data.
3.
The second cycle of the Buffered Program Command is the word count of the data to be loaded into the write buffer. This
is followed by up to 32 words of data.Then the confirm command (0xD0) is issued, triggering the array programming
operation.
4.
The confirm command (0xD0) is followed by the buffer data.
November 2007
Order Number: 306666-11
Datasheet
45