參數(shù)資料
型號(hào)： L642DU90RI
廠商： Advanced Micro Devices, Inc.
英文描述： 128 Megabit (8 M x 16-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O⑩ Control
中文描述： 128兆位（8米× 16位）的CMOS 3.0伏特，只有統(tǒng)一閃存部門與VersatileI /輸出⑩控制
文件頁數(shù)： 27/54頁
文件大小： 520K
代理商： L642DU90RI
May 5, 2006 25022A2
Am29LV642D
25
D A T A S H E E T
Table 9. Primary Vendor-Specific Extended Query
COMMAND DEFINITIONS
Writing specific address and data commands or se-
quences into the command register initiates device op-
erations. Table 10 defines the valid register command
sequences. Writing
incorrect
address and data val-
ues
or writing them in the
improper sequence
resets
the device to reading array data.
All addresses are latched on the falling edge of WE#
or CE# (or CE2#), whichever happens later. All data is
latched on the rising edge of WE# or CE# (or CE2#),
whichever happens first. Refer to the AC Characteris-
tics section for timing diagrams.
Reading Array Data
The device is automatically set to reading array data
after device power-up. No commands are required to
retrieve data. The device is ready to read array data
after completing an Embedded Program or Embedded
Erase algorithm.
After the device accepts an Erase Suspend command,
the device enters the erase-suspend-read mode, after
which the system can read data from any
non-erase-suspended sector. After completing a pro-
gramming operation in the Erase Suspend mode, the
system may once again read array data with the same
exception. See the Erase Suspend/Erase Resume
Commands section for more information.
The system
must
issue the reset command to return
the device to the read (or erase-suspend-read) mode if
DQ5 goes high during an active program or erase op-
eration, or if the device is in the autoselect mode. See
the next section, Reset Command, for more informa-
tion.
Addresses (x16)
Data
Description
40h
41h
42h
0050h
0052h
0049h
Query-unique ASCII string “PRI”
43h
0031h
Major version number, ASCII
44h
0031h
Minor version number, ASCII
45h
0001h
Address Sensitive Unlock (Bits 1-0)
0 = Required, 1 = Not Required
Silicon Revision Number (Bits 7-2)
46h
0002h
Erase Suspend
0 = Not Supported, 1 = To Read Only, 2 = To Read & Write
47h
0004h
Sector Protect
0 = Not Supported, X = Number of sectors in per group
48h
0001h
Sector Temporary Unprotect
00 = Not Supported, 01 = Supported
49h
0004h
Sector Protect/Unprotect scheme
04 = 29LV800 mode
4Ah
0000h
Simultaneous Operation
00 = Not Supported, X = Number of Sectors in Bank
4Bh
0000h
Burst Mode Type
00 = Not Supported, 01 = Supported
4Ch
0000h
Page Mode Type
00 = Not Supported
4Dh
00B5h
ACC (Acceleration) Supply Minimum
00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV
4Eh
00C5h
ACC (Acceleration) Supply Maximum
00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV
4Fh
0000h
Top/Bottom Boot Sector Flag
02h = Bottom Boot Device, 03h = Top Boot Device
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