AM29PL320DB20WPI datasheet(19/49 Pages) AMD

19 / 49 page

June 13, 2005

Am29PL320D

SecSi

™ (Secured Silicon) Sector Flash

Memory Region

The SecSi (Secured Silicon) Sector feature provides a

Flash memory region that enables permanent part

identification through an Electronic Serial Number

(ESN). The SecSi Sector is a minimum of 128 words

(64 double words) in length, and uses a SecSi Sector

Indicator Bit (DQ7) to indicate whether or not the

SecSi Sector is locked when shipped from the factory.

This bit is permanently set at the factory and cannot

be changed, which prevents cloning of a factory locked

part. This ensures the security of the ESN once the

product is shipped to the field. Current version of de-

vice has 512 words; future versions will have only

128 words. This should be considered during sys-

tem design.

AMD offers the device with the SecSi Sector either

factory locked or customer lockable. The factory-

locked version is always protected when shipped from

the factory, and has the SecSi (Secured Silicon) Sec-

tor Indicator Bit permanently set to a “1.” The cus-

tomer-lockable version is shipped with the SecSi

Sector unprotected, allowing customers to utilize the

that sector in any manner they choose. The customer-

lockable version has the SecSi (Secured Silicon) Sec-

tor Indicator Bit permanently set to a “0.” Thus, the

SecSi Sector Indicator Bit prevents customer-lockable

Table 12.

Primary Vendor-Specific Extended Query

Addresses

(Double Word

Mode)

Addresses

(Word 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

0032h

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

0001h

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 = 4 Word Linear Burst, 02 = 8 Word Linear Burst,

03 = 32 Linear Burst, 04 = 4 Word Interleave Burst

4Ch

98h

0002h

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 millivolt.

4Eh

9Ch

00C5h

ACC (Acceleration) Supply

Maximum 00h = not supported,

D7–D4: volt; D3–D0: 100 millivolt.

50h

A0h

0000h

Program Suspend

00h = not supported, 01h = supported

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