L652DU12RI datasheet(27/54 Pages) AMD

27 / 54 page

May 5, 2006 24961A5

Am29LV652D

D A TA

SH EE 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, on page 30 defines the valid

dress and data values or writing them in the im-

proper 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 “AC Characteristics”

on page 39 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

whi c h t he system can read dat a f r om an 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 “Erase Suspend/Erase Resume Com-

mands” on page 28 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

Addresses (x8)

Data

Description

40h

41h

42h

50h

52h

49h

Query-unique ASCII string “PRI”

43h

31h

Major version number, ASCII

44h

31h

Minor version number, ASCII

45h

01h

Address Sensitive Unlock (Bits 1-0)

0 = Required, 1 = Not Required

Silicon Revision Number (Bits 7-2)

46h

02h

Erase Suspend

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

47h

04h

Sector Protect

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

48h

01h

Sector Temporary Unprotect

00 = Not Supported, 01 = Supported

49h

04h

Sector Protect/Unprotect scheme

04 = 29LV800 mode

4Ah

00h

Simultaneous Operation

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

4Bh

000h

Burst Mode Type

00 = Not Supported, 01 = Supported

4Ch

00h

Page Mode Type

00 = Not Supported

4Dh

B5h

ACC (Acceleration) Supply Minimum

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

4Eh

C5h

ACC (Acceleration) Supply Maximum

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

4Fh

00h

Top/Bottom Boot Sector Flag

02h = Bottom Boot Device, 03h = Top Boot Device

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