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参数资料
| 型号： | PF38F40L0YUQ0 |
| 厂商： | NUMONYX |
| 元件分类： | PROM |
| 英文描述： | 16M X 16 FLASH 1.8V PROM, PBGA88 |
| 封装： | 8 X 11 MM, 1 MM HEIGHT, ROHS COMPLIANT, VFBGA-88 |
| 文件页数： | 58/99页 |
| 文件大小： | 1419K |
| 代理商： | PF38F40L0YUQ0 |
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Intel StrataFlash Wireless Memory (L18) with A/D-Multiplexed I/O
July 2006
Datasheet
Order Number: 313295-002US
61
Intel StrataFlash Wireless Memory (L18)
alone. A locked-down block can only be unlocked by issuing the Unlock Block command
with WP# deasserted. To return an unlocked block to locked-down state, a Lock
command (60h/01h) must be issued prior to changing WP# to VIL. A locked or
unlocked block can be locked-down by writing the Lock-Down Block command
sequence. Locked-down blocks revert to the locked state upon reset or power up the
device (see Figure 20, “Block Locking State Diagram” on page 61).
13.1.4
Block Lock Status
The Read Device Identifier command is used to determine a block’s lock status (see
Section 15.2, “Read Device Identifier” on page 70). Data bits AD[1:0] display the
addressed block’s lock status; AD0 is the addressed block’s lock bit, while AD1 is the
addressed block’s lock-down bit.
13.1.5
Block Locking During Suspend
Block lock and unlock changes can be performed during an erase suspend. To change
block locking during an erase operation, first issue the Erase Suspend command.
Monitor the Status Register until SR[7] and SR[6] are set, indicating the device is
suspended and ready to accept another command.
Next, write the desired lock command sequence to a block, which changes the lock
state of that block. After completing block lock or unlock operations, resume the erase
operation using the Erase Resume command.
Figure 20. Block Locking State Diagram
Unlocked
[000]
Locked
[001]
Locked
-Down
[011]
Locked
[111]
Locked
[101]
Unlocked
[110]
Unlocked
[100]
Unlocked
Locked
WP# Asserted
WP# De-Asserted
Power-Up/
Reset
Default
Power-Up/
Reset
Default
Lock-Down Cmd
Unlock
Cmd
Lock-Down
Cmd
Lock-Down Cmd
WP#
A/DQ1 A/DQ0
Block Status
x
0
Unlocked
x
0
1
Locked
0
1
Locked-Down
1
0
Unlocked
1
Locked
Unlock
Cmd
Lock
Cmd
Unlock
Cmd
Lock
Cmd
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