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参数资料
| 型号： | PH28F128W18BD60A |
| 厂商： | INTEL CORP |
| 元件分类： | PROM |
| 英文描述： | 8M X 16 FLASH 1.8V PROM, 60 ns, PBGA56 |
| 封装： | 9 X 11 MM, 1 MM HEIGHT, LEAD FREE, VFBGA-56 |
| 文件页数： | 69/106页 |
| 文件大小： | 1496K |
| 代理商： | PH28F128W18BD60A |
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Intel
Wireless Flash Memory (W18)
Datasheet
Intel Wireless Flash Memory (W18)
07-Dec-2005
Order Number: 290701, Revision: 015
65
11.0
Program Operations
11.1
Word Program
When the Word Program command is issued, the WSM executes a sequence of internally timed
events to program a word at the desired address and verify that the bits are sufficiently
programmed. Programming the flash array changes specifically addressed bits to 0; 1 bits do not
change the memory cell contents.
Programming can occur in only one partition at a time. All other partitions must be in either a read
mode or erase suspend mode. Only one partition can be in erase suspend mode at a time.
The Status Register can be examined for program progress by reading any address within the
partition that is busy programming. However, while most Status Register bits are partition-specific,
the Device WSM Status bit, SR[7], is device-specific; that is, if the Status Register is read from any
other partition, SR[7] indicates program status of the entire device. This permits the system CPU to
monitor program progress while reading the status of other partitions.
CE# or OE# toggle (during polling) updates the Status Register. Several commands can be issued
to a partition that is programming: Read Status Register, Program Suspend, Read Identifier, and
Read Query. The Read Array command can also be issued, but the read data is indeterminate.
After programming completes, three Status Register bits can signify various possible error
conditions. SR[4] indicates a program failure if set. If SR[3] is set, the WSM couldn’t execute the
Word Program command because VPP was outside acceptable limits. If SR[1] is set, the program
was aborted because the WSM attempted to program a locked block.
After the Status Register data is examined, clear it with the Clear Status Register command before
a new command is issued. The partition remains in Status Register mode until another command is
written to that partition. Any command can be issued after the Status Register indicates program
completion.
If CE# is deasserted while the device is programming, the devices will not enter standby mode until
the program operation completes.
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