AM29LV640MT110REF datasheet(29/66 Pages) AMD

29 / 66 page

February 1, 2007 26190C8

Am29LV640MT/B

D A TA

SH EET

Table 11.

Primary Vendor-Specific Extended Query

COMMAND DEFINITIONS

Writing specific address and data commands or se-

quences into the command register initiates device op-

erations. Tables 12 and 13 define the valid register

command sequences. Writing incorrect address and

data values or writing them in the improper sequence

can place the device in an unknown state. A reset

command is then required to return the device to read-

ing 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. See AC Characteristics on page 45 for timing dia-

grams.

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

Addresses

(x16)

Addresses

(x8)

Data

Description

40h

41h

42h

80h

82h

84h

0050h

0052h

0049h

Query-unique ASCII string “PRI”

43h

86h

0031h

Major version number, ASCII

44h

88h

0033h

Minor version number, ASCII

45h

8Ah

0008h

Address Sensitive Unlock (Bits 1-0)

0 = Required, 1 = Not Required

Process Technology (Bits 7-2) 0010b = 0.23 µm MirrorBit

46h

8Ch

0002h

Erase Suspend

0 = Not Supported, 1 = To Read Only, 2 = To Read & Write

47h

8Eh

0001h

Sector Protect

0 = Not Supported, X = Number of sectors in per group

48h

90h

0001h

Sector Temporary Unprotect

00 = Not Supported, 01 = Supported

49h

92h

0004h

Sector Protect/Unprotect scheme

04 = 29LV800 mode

4Ah

94h

0000h

Simultaneous Operation

00 = Not Supported, X = Number of Sectors in Bank

4Bh

96h

0000h

Burst Mode Type

00 = Not Supported, 01 = Supported

4Ch

98h

0001h

Page Mode Type

00 = Not Supported, 01 = 4 Word Page, 02 = 8 Word Page

4Dh

9Ah

00B5h

ACC (Acceleration) Supply Minimum

00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV

4Eh

9Ch

00C5h

ACC (Acceleration) Supply Maximum

00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV

4Fh

9Eh

0002h/

0003h

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

50h

A0h

0001h

Program Suspend

00h = Not Supported, 01h = Supported

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