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A29DL323TG-120

32 Megabit (4M x 8-Bit/2M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory

AMIC Technology 

A29DL32x Series

Autoselect Mode

The autoselect mode provides manufacturer and device

identification, and sector protection verification, through

identifier codes output on I/O7 - I/O0. This mode is primarily

intended for programming equipment to automatically match

a device to be programmed with its corresponding

programming algorithm. However, the autoselect codes can

also be accessed in-system through the command register.

When using programming equipment, the autoselect mode

requires VID (8.5V to 12.5 V) on address pin A9. Address

pins A6, A1, and A0 must be as shown in Table 5. In

addition, when verifying sector protection, the sector address

must appear on the appropriate highest order address bits.

(see Table 3-4). Table 5 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 I/O7 - I/O0.

To access the autoselect codes in-system, the host system

can issue the autoselect command via the command

register, as shown in Table 12. This method does not require

VID. Refer to the Autoselect Command Sequence section for

more information.

Table 5. A29DL32x Autoselect Codes (High Voltage Method)

I/O8 to I/O15

A20 A11

A8

A5

I/O7

Description

CE OE

WE to

A12

to

A10

A9

to

A7

A6

to A3 A2

A4

A1 A0

BYTE BYTE

to

I/O0

= VIH = VIL

Manufacturer ID:

AMIC

LL

Device ID: A29DL322 L L

H BA X VID X L X L L L L

X

H BA X VID X L X X X L H 22h

X

37h

X 55h (T), 56h (U)

Device ID: A29DL323 L L

H BA X VID X L X X X L H 22h

X 50h (T), 53h (U)

Device ID: A29DL324 L L

H BA X VID X L X X X L H 22h

X 5Ch (T), 5Fh (U)

Continuation ID

LL

H

X

X VID X L X X X H H

X

X

7Fh

Read Sector Status

LL

H SA X VID X L X L L H L

X

X

01h (protected),

00h (unprotected)

L=Logic Low= VIL, H=Logic High=VIH, SA=Sector Address, X=Don’t Care, BA=Bank Address

Note: The autoselect codes may also be accessed in-system via command sequences.

PRELIMINARY (May, 2005, Version 0.0)

12

AMIC Technology, Corp.

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