AM29LV640MH SPANSION [SPANSION], AM29LV640MH Datasheet - Page 26

• Manufacturer Part Number: AM29LV640MH
• Description: 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O Control
• Manufacturer: SPANSION [SPANSION]

COMMAND DEFINITIONS
Writing specific address and data commands or se-
quences into the command register initiates device op-
erations. Tables
command sequences. Writing incorrect address and
data values or writing them in the improper se-
quence may place the device in an unknown state. A
reset command is then required to return the device to
reading array data.
All addresses are latched on the falling edge of WE#
or CE#, whichever happens later. All data is latched on
the rising edge of WE# or CE#, whichever happens
first. Refer to the
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
24
Addresses
(x16)
4Ch
4Dh
40h
41h
42h
43h
44h
45h
46h
47h
48h
49h
4Ah
4Bh
4Eh
4Fh
50h
Addresses
8Ch
9Ch
10
AC Characteristics
(x8)
8Ah
8Eh
9Ah
9Eh
A0h
80h
82h
84h
86h
88h
90h
92h
94h
96h
98h
and
11
define the valid register
00C5h
0004h/
Table 7. Primary Vendor-Specific Extended Query
00B5h
0050h
0052h
0049h
0031h
0033h
0008h
0002h
0001h
0001h
0004h
0000h
0000h
0001h
0005h
0001h
Data
section for timing
Query-unique ASCII string “PRI”
Major version number, ASCII
Minor version number, ASCII
Address Sensitive Unlock (Bits 1-0)
0 = Required, 1 = Not Required
Process Technology (Bits 7-2) 0010b = 0.23 µm MirrorBit
Erase Suspend
0 = Not Supported, 1 = To Read Only, 2 = To Read & Write
Sector Protect
0 = Not Supported, X = Number of sectors in per group
Sector Temporary Unprotect
00 = Not Supported, 01 = Supported
Sector Protect/Unprotect scheme
04 = 29LV800 mode
Simultaneous Operation
00 = Not Supported, X = Number of Sectors in Bank
Burst Mode Type
00 = Not Supported, 01 = Supported
Page Mode Type
00 = Not Supported, 01 = 4 Word/8 Byte Page, 02 = 8 Word/16 Byte Page
ACC (Acceleration) Supply Minimum
00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV
ACC (Acceleration) Supply Maximum
00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV
Top/Bottom Boot Sector Flag
00h = Uniform Device without WP# protect, 02h = Bottom Boot Device, 03h = Top
Boot Device, 04h = Uniform sectors bottom WP# protect, 05h = Uniform sectors top
WP# protect
Program Suspend
00h = Not Supported, 01h = Supported
D A T A S H E E T
Am29LV640MH/L
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
w h i c h t h e s y s t e m c a n r e a d d a t a f r o m a n y
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
Commands
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,
tion.
See also
Device Bus Operations
Requirements for Reading Array Data
Description
section for more information.
Reset
Erase Suspend/Erase Resume
Command, for more informa-
section for more information.
December 14, 2005
in the