AM29SL160C datasheet(23/52 Pages) AMD

23 / 52 page

January 23, 2007 21635C5

Am29SL160C

D A TA

SH EE T

Table 11.

Primary Vendor-Specific Extended Query

COMMAND DEFINITIONS

Writing specific address and data commands or

sequences into the command register initiates device

operations. Table 12, on page 26 defines the valid reg-

ister command sequences. Writing incorrect address

and data values 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#, whichever happens later. All data is latched on

the rising edge of WE# or CE#, whichever happens

first. Refer to the appropriate timing diagrams in “AC

Characteristics” on page 35.

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 also 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 mode. The

system can read array data using the standard read

timings, except that if it reads at an address within

erase-suspended sectors, the device outputs status

data. After completing a programming operation in the

Erase Suspend mode, the system may once again

read array data with the same exception. See “Erase

Suspend/Erase Resume Commands” on page 24 for

more information on this mode.

The system must issue the reset command to re-

enable the device for reading array data if DQ5 goes

high, or while in the autoselect mode. See “Reset Com-

mand”, next.

See also “Requirements for Reading Array Data” on

page 9 for more information. The table provides the

read parameters, and Figure 13, on page 35 shows the

timing diagram.

Reset Command

Writing the reset command to the device resets the

device to reading array data. Address bits are don’t

care for this command.

The reset command may be written between the

sequence cycles in an erase command sequence

before erasing begins. This resets the device to reading

array data. Once erasure begins, however, the device

ignores reset commands until the operation is

complete.

The reset command may be written between the

sequence cycles in a program command sequence

Addresses

(Word Mode)

Addresses

(Byte Mode)

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

0030h

Minor version number, ASCII

45h

8Ah

0000h

Address Sensitive Unlock

0 = Required, 1 = Not Required

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

01 = 29F040 mode, 02 = 29F016 mode,

03 = 29F400 mode, 04 = 29LV800A mode

4Ah

94h

0000h

Simultaneous Operation

00 = Not Supported, 01 = Supported

4Bh

96h

0000h

Burst Mode Type

00 = Not Supported, 01 = Supported

4Ch

98h

0000h

Page Mode Type

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

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