JS48F4400PCZ00 查看數據表（PDF） - Numonyx -> Micron
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JS48F4400PCZ00 Datasheet PDF : 102 Pages
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Numonyx™ Wireless Flash Memory (W18)
Table 22: Command Codes and Descriptions (Sheet 1 of 2)
Operation
Read
Program
Erase
Suspend
Block Locking
Code
Device
Command
Description
FFh
70h
90h
98h
50h
40h
10h
30h
D0h
20h
D0h
B0h
D0h
60h
01h
D0h
2Fh
Read Array
Places selected partition in Read Array mode.
Read Status
Register
Places selected partition in Status Register read mode. After issuing this
command, reading from the partition outputs SR data on DQ[15:0]. A partition
automatically enters this mode after issuing the Program or Erase command.
Read
Identifier
Places the selected partition in Read ID mode. Device reads from partition
addresses output manufacturer/device codes, Configuration Register data, block
lock status, or protection register data on DQ[15:0].
CFI Query
Puts the addressed partition in CFI Query mode. Device reads from the partition
addresses output CFI information on DQ[7:0].
Clear Status
Register
The WSM can set the Status Register’s block lock (SR[1]), VPP (SR[3]), program
(SR[4]), and erase (SR[5]) status bits, but it cannot clear them. SR[5:3,1] can
only be cleared by a device reset or through the Clear Status Register command.
Word Program
Setup
This preferred program command’s first cycle prepares the CUI for a program
operation. The second cycle latches address and data, and executes the WSM
program algorithm at this location. Status register updates occur when CE# or
OE# is toggled. A Read Array command is required to read array data after
programming.
Alternate
Setup
Equivalent to a Program Setup command (40h).
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.
EFP Confirm
If the first command was EFP Setup (30h), the CUI latches the address and data,
and prepares the device for EFP mode.
Erase Setup
This command prepares the CUI for Block Erase. The device erases the block
addressed by the Erase Confirm command. If the next command is not Erase
Confirm, the CUI sets Status Register bits SR[5:4] to indicate command
sequence error and places the partition in the read Status Register mode.
Erase Confirm
If the first command was Erase Setup (20h), the CUI latches 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 Status
Register data.
Program
Suspend or
Erase
Suspend
This command, issued at any device address, suspends the currently executing
program or erase operation. Status register data indicates 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
control signal states (except RST#).
Suspend
Resume
This command, issued at any device address, resumes the suspended program
or erase operation.
Lock Setup
This command prepares the CUI lock configuration. If the next command is not
Lock Block, Unlock Block, or Lock-Down, the CUI sets SR[5:4] to indicate
command sequence error.
Lock Block
If the previous command was Lock Setup (60h), the CUI locks the addressed
block.
Unlock Block
If the previous command was Lock Setup (60h), the CUI latches the address and
unlocks the addressed block. If previously locked-down, the operation has no
effect.
Lock-Down
If the previous command was Lock Setup (60h), the CUI latches the address and
locks-down the addressed block.
November 2007
Order Number: 290701-18
Datasheet
51
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