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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 |
| 文件頁數(shù)： | 58/104頁 |
| 文件大?。?/td> | 1443K |
| 代理商： | GE28F640W30TD70 |
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28F640W30, 28F320W30, 28F128W30
Datasheet
Intel Wireless Flash Memory (W30)
June 2005
Order Number: 290702, Revision: 011
57
10.0
Read Operations
10.1
Read Array
The Read Array command places (or resets) the partition in read-array mode and is used to read
data from the flash memory array. Upon initial flash device power-up, or after reset (RST#
transitions from VIL to VIH), all partitions default to asynchronous read-array mode.
To read array data from the flash device:
1. Write the Read Array command (FFh) to the CUI and specify the desired word address.
1. Read from that address.
Note:
If a partition is already in read-array mode, you do not need to issue the Read Array command to
read from that partition.
If the Read Array command is written to a partition that is erasing or programming, the flash device
presents invalid data on the bus until the program or erase operation completes.
After the program or erase finishes in that partition, valid array data can then be read. If an Erase
Suspend or Program Suspend command suspends the WSM, a subsequent Read Array command
places the addressed partition in read-array mode.
The Read Array command functions independently of VPP.
10.2
Read Device ID
The read identifier mode outputs the manufacturer/device identifier, block lock status, protection
register codes, and configuration register data. The identifier information is contained within a
separate memory space on the flash device, and can be accessed along the 4-Mbit partition address
range supplied by the Read Identifier command (90h) address. Reads from addresses in Table 20
retrieve ID information. Issuing a Read Identifier command to a partition that is programming or
erasing places the outputs of that partition in read ID mode while the partition continues to program
or erase in the background.
Table 20.
Flash Device Identification Codes (Sheet 1 of 2)
Item
Address
Data
Description
Base
Offset
Manufacturer ID
Partition
00h
0089h
Intel
Device ID
Partition
01h
8852h
32-Mbit TPD
8853h
32-Mbit BPD
8854h
64-Mbit TPD
8855h
64-Mbit BPD
8856h
128-Mbit TPD
8857h
128-Mbit BPD
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