參數(shù)資料
型號(hào)： GE28F640W30TD70
廠商： INTEL CORP
元件分類： PROM
英文描述： 4M X 16 FLASH 1.8V PROM, 70 ns, PBGA56
封裝： 0.75 MM PITCH, VFBGA-56
文件頁(yè)數(shù)： 60/104頁(yè)
文件大?。?/td> 1443K
代理商： GE28F640W30TD70
28F640W30, 28F320W30, 28F128W30
Datasheet
Intel Wireless Flash Memory (W30)
June 2005
Order Number: 290702, Revision: 011
59
Each 4-Mbit partition contains its own status register. Bits SR[6:0] are unique to each partition, but
SR[7], the Device WSM Status (DWS) bit, pertains to the entire flash memory device. SR[7]
provides the program and erase status of the entire flash device. By contrast, the Partition WSM
Status (PWS) bit, SR[0], provides program and erase status of the addressed partition only. Status
register bits SR[6:1] present information about partition-specific program, erase, suspend, VPP, and
on page 60 describes the DWS (SR[7]) and PWS (SR[0]) combinations.
Table 21.
Status Register Definitions
DWS
ESS
ES
PS
VPPS
PSS
DPS
PWS
7
654
32
10
Table 22.
Status Register Descriptions
Bit
Name
State
Description
7
DWS
Device WSM Status
0 = Device WSM is Busy
1 = Device WSM is Ready
SR[7] indicates erase or program completion in
the flash device.
SR[6:1] are invalid while SR[7] = 0.
See Table 23 for valid SR[7] and SR[0] combinations.
6
ESS
Erase Suspend Status
0 = Erase in progress/completed
1 = Erase suspended
After issuing an Erase Suspend command, the WSM
halts and sets SR[7] and SR[6]. SR[6] remains set until
the flash device receives an Erase Resume command.
5
ES
Erase Status
0 = Erase successful
1 = Erase error
SR[5] is set if an attempted erase failed.
A Command Sequence Error is indicated when
SR[7,5:4] are set.
4
PS
Program Status
0 = Program successful
1 = Program error
SR[4] is set if the WSM failed to program a word.
3
VPPS
VPP Status
0 = VPP OK
1 = VPP low detect, operation aborted
The WSM indicates the VPP level after program or
erase completes.
SR[3] does not provide continuous VPP feedback and
is not guaranteed when VPP≠VPPL/VPPH
2
PSS
Program Suspend
Status
0 = Program in progress/completed
1 = Program suspended
After receiving a Program Suspend command, the
WSM halts execution and sets SR[7] and SR[2]. These
bits remain set until a Resume command is received.
1
DPS
Device Protect Status
0 = Unlocked
1 = Aborted erase/program attempt on
a locked block
If an erase or program operation is attempted to a
locked block (if WP# = VIL), the WSM sets SR[1] and
aborts the operation.
0
PWS
Partition Write Status
0 = This partition is busy, but only if
SR[7]=0
1 = Another partition is busy, but only if
SR[7]=0
The addressed partition is erasing or programming. In
EFP mode, SR[0] indicates that a data-stream word
has finished programming or verifying, depending on
the particular EFP phase.
See Table 23 for valid SR[7] and SR[0] combinations.
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