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PF38F5070MJP0B 数据表(PDF) 57 Page - Numonyx B.V

部件名 PF38F5070MJP0B
功能描述  Numonyx Wireless Flash Memory (W18)
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制造商  NUMONYX [Numonyx B.V]
网页  http://www.numonyx.com
标志 NUMONYX - Numonyx B.V

PF38F5070MJP0B 数据表(HTML) 57 Page - Numonyx B.V

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November 2007
Datasheet
Order Number: 290701-18
57
Numonyx™ Wireless Flash Memory (W18)
10.5
CFI Query
This device contains a separate CFI query database that acts as an “on-chip datasheet.”
The CFI information within this device can be accessed by issuing the Read Query
command and supplying a specific address. The address is constructed from the base
address of a partition plus a particular offset corresponding to the desired CFI field.
Appendix B, “Common Flash Interface (CFI)” on page 89 shows accessible CFI fields
and their address offsets.
Issuing the Read Query command to a partition that is programming or erasing puts
that partition in read query mode while the partition continues to program or erase in
the background.
10.6
Read Status Register
The device’s Status Register displays program and erase operation status. A partition’s
status can be read after writing the Read Status Register command to any location
within the partition’s address range. Read-status mode is the default read mode
following a Program, Erase, or Lock Block command sequence. Subsequent single reads
from that partition will return its status until another valid command is written.
The read-status mode supports single synchronous and single asynchronous reads
only; it doesn’t support burst reads. The first falling edge of OE# or CE# latches and
updates Status Register data. The operation doesn’t affect other partitions’ modes.
Because the Status Register is 8 bits wide, only DQ [7:0] contains valid Status Register
data; DQ [15:8] contains zeros. See Table 25, “Status Register Definitions” on page 57
and Table 26, “Status Register Descriptions” on page 58.
Each 4-Mbit partition contains its own Status Register. Bits SR[6:0] are unique to each
partition, but SR[7], the Device WSM Status (DWS) bit, pertains to the entire device.
SR[7] provides program and erase status of the entire device. By contrast, the Partition
WSM Status (PWS) bit, SR[0], provides program and erase status of the addressed
partition only. Status register bits SR[6:1] present information about partition-specific
program, erase, suspend, VPP, and block-lock states. Table 27, “Status Register Device
WSM and Partition Write Status Description” on page 58 presents descriptions of DWS
(SR[7]) and PWS (SR[0]) combinations.
Protection Register Lock Status
Partition
80h
Lock Data
Protection Register
Partition
81h - 88h
Register Data
Multiple reads required to read the
entire 128-bit Protection Register.
Notes:
1.
The address is constructed from a base address plus an offset. For example, to read the Block Lock Status for block
number 38 in a BPD, set the address to the BBA (0F8000h) plus the offset (02h), i.e. 0F8002h. Then examine bit 0 of
the data to determine if the block is locked.
2.
See
Section 13.1.4, “Block Lock Status” on page 73 for valid lock status.
Table 24: Device Identification Codes (Sheet 2 of 2)
Item
Address1
Data
Description
Base
Offset
Table 25: Status Register Definitions
DWS
ESS
ES
PS
VPPS
PSS
DPS
PWS
76
543
21
0


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