AM29PDL640AGA85NS SPANSION [SPANSION], AM29PDL640AGA85NS Datasheet - Page 17

AM29PDL640AGA85NS

Manufacturer Part Number

AM29PDL640AGA85NS

Description

64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 16 Mbit (1 M x 16-Bit) Pseudo Static RAM

Manufacturer

SPANSION [SPANSION]

Datasheet

1.AM29PDL640AGA85NS.pdf (69 pages)

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Autoselect Mode

The autoselect mode provides manufacturer and de-

vice identification, and sector protection verification,

through identifier codes output on DQ7–DQ0. This

mode is primarily intended for programming equip-

ment to automatically match a device to be pro-

grammed with its corresponding programm ing

algorithm. However, the autoselect codes can also be

accessed in-system through the command register.

When using programming equipment, the autoselect

mode requires V

must be as shown in Table 7. In addition, when verify-

ing sector protection, the sector address must appear

on the appropriate highest order address bits (see

Table 4). Table 7 shows the remaining address bits

that are don’t care. When all necessary bits have been

set as required, the programming equipment may then

read the corresponding identifier code on DQ7–DQ0.

However, the autoselect codes can also be accessed

in-system through the command register, for instances

when the device is erased or programmed in a system

without access to high voltage on the A9 pin. The com-

mand sequence is illustrated in Table 14. Note that if a

Bank Address (BA) on address bits A21, A20, and A19

is asserted during the third write cycle of the autose-

lect command, the host system can read autoselect

data that bank and then immediately read array data

from the other bank, without exiting the autoselect

mode.

To access the autoselect codes in-system, the host

system can issue the autoselect command via the

command register, as shown in Table 14. This method

does not require V

mand Sequence section for more information.

Table 7. Am29PDL640G Boot Sector/Sector Block

November 20, 2003

SA8–SA10

Sector

Addresses for Protection/Unprotection

SA0

SA1

SA2

SA3

SA4

SA5

SA6

SA7

0000001XXX,

0000010XXX,

0000011XXX

on address pin A9. Address pins

0000000000

0000000001

0000000010

0000000011

0000000100

0000000101

0000000110

0000000111

A21–A12

. Refer to the Autoselect Com-

Sector Block Size

96 (3x32) Kwords

4 Kwords

Sector/

P R E L I M I N A R Y

Am49PDL640AG

SA103–SA106

SA107–SA110

SA111–SA114

SA115–SA118

SA119–SA122

SA123–SA126

SA127–SA130

SA131–SA133

SA99–SA102

SA11–SA14

SA15–SA18

SA19–SA22

SA23–SA26

SA55–SA58

SA59–SA62

SA63–SA66

SA67–SA70

SA71–SA74

SA75–SA78

SA79–SA82

SA83–SA86

SA87–SA90

SA91–SA94

SA95–SA98

SA27-SA30

SA31-SA34

SA35-SA38

SA39-SA42

SA43-SA46

SA47-SA50

SA51-SA54

Sector

SA134

SA135

SA136

SA137

SA138

SA139

SA140

SA141

00001XXXXX

00010XXXXX

00011XXXXX

00100XXXXX

00101XXXXX

00110XXXXX

00111XXXXX

01000XXXXX

01001XXXXX

01010XXXXX

01011XXXXX

01100XXXXX

01101XXXXX

01110XXXXX

01111XXXXX

10000XXXXX

10001XXXXX

10010XXXXX

10011XXXXX

10100XXXXX

10101XXXXX

10110XXXXX

10111XXXXX

11000XXXXX

11001XXXXX

11010XXXXX

11011XXXXX

11100XXXXX

11101XXXXX

11110XXXXX

1111100XXX,

1111101XXX,

1111110XXX

1111111000

1111111001

1111111010

1111111011

1111111100

1111111101

1111111111

A21–A12

Sector Block Size

128 (4x32) Kwords

96 (3x32) Kwords

4 Kwords

Sector/

AM29PDL640AGA85NS SPANSION [SPANSION], AM29PDL640AGA85NS Datasheet - Page 17

AM29PDL640AGA85NS

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