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參數(shù)資料
| 型號： | 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)： | 54/104頁 |
| 文件大小： | 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
53
Table 18.
Command Codes and Descriptions (Sheet 1 of 2)
Operation
Code
Flash Device
Command
Description
Read
FFh
Read Array
Places the selected partition in read-array mode.
70h
Read Status
Register
Places the selected partition in status register read mode. The partition enters this
mode after a Program or Erase command is issued to it.
90h
Read Identifier
Places the selected partition in read identifier mode. Flash device reads from
partition addresses output the manufacturer/device codes, configuration register
data, block lock status, or protection register data on D[15:0].
98h
Read Query
Places the addressed partition in read query mode. Flash device reads from the
partition addresses output the CFI information on D[7:0].
50h
Clear Status
Register
The WSM can set the block lock (SR[1]), VPP (SR[3]), program (SR[4]), and
erase (SR[5]) status bits of the status register, but WSM cannot clear these bits.
SR[5:3,1] can be cleared only by a flash device reset or through the Clear Status
Register command.
Program
40h
Word Program
Setup
The first cycle of this preferred program command prepares the CUI for a
program operation.
The second cycle latches the address and data, and executes the WSM
program algorithm at this location.
Status register updates occur when CE# or OE# is toggled. After programming,
use a Read Array command to read the array data.
10h
Alternate
Setup
Equivalent to a Program Setup command (40h).
30h
EFP Setup
This program command activates EFP mode.
The first write cycle sets up the command.
If the second cycle is an EFP Confirm command (D0h), subsequent writes
provide program data.
All other commands are ignored after EFP mode begins.
D0h
EFP Confirm
If the first command was EFP Setup (30h), the CUI latches the address and data,
and prepares the flash device for EFP mode.
Erase
20h
Erase Setup
This command prepares the CUI for Block Erase. The flash device erases the
block that the Erase Confirm command addresses. If the next command is not
Erase Confirm, the CUI sets status register bits SR[5:4] to indicate a command
sequence error, and places the partition in the read status register mode.
D0h
Erase Confirm
If the first command was Erase Setup (20h), the CUI latches the address and
data, and erases the block indicated by the erase confirm cycle address. During
program or erase, the partition responds only to Read Status Register, Program
Suspend, and Erase Suspend commands. CE# or OE# toggle updates the status
register data.
Suspend
B0h
Program
Suspend or
Erase
Suspend
This command, issued at any flash device address, suspends the currently
executing program or erase operation. Status register data indicates that the
operation was successfully suspended if SR[2] (program suspend) or SR[6]
(erase suspend) and SR[7] are set. The WSM remains in the suspended state
regardless of the control signal states (except RST#).
D0h
Suspend
Resume
This command, issued at any flash device address, resumes the suspended
program or erase operation.
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