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
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
DnA
DnA
DnA
DnA
DnA
0xFF
0x90
0x98
0x70
0x50
-
-
DBA + IA
DBA + QA
DnA
-
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
Program
Buffered Program(3)
> 2
> 2
0xE8
0x80
N - 1
0xD0
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
2
2
Write
Write
Write
Write
Write
Write
Write
DnA
DnA
BA
0xB0
0xD0
0x60
0x60
0x60
0xC0
0xC0
-
-
-
Suspend
-
-
-
Write
Write
Write
Write
Write
BA
BA
BA
PRA
LRA
0x01
0xD0
0x2F
PD
Block
Locking/
Unlocking
Unlock Block
BA
Lock-down Block
BA
PRA
LRA
Program Protection Register
Program Lock Register
Protection
LRD
Program Read Configuration
Register
Configuration
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].
ID = Identifier data.
QD = Query data on DQ[15:0].
2.
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.
4.
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.
The confirm command (0xD0) is followed by the buffer data.
November 2007
Order Number: 306666-11
Datasheet
45
NUMONYX [ NUMONYX B.V ]
