A29DL323UG-90I

更新时间： 2024-01-18 10:40:50

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联笙电子 - AMICC		闪存
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50页	772K
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A29DL323UG-90I 数据手册

A29DL32x Series

DEVICE BUS OPERATIONS

This section describes the requirements and use of the

device bus operations, which are initiated through the

internal command register. The command register itself does

not occupy any addressable memory location. The register is

composed of latches that store the commands, along with

the address and data information needed to execute the

command. The contents of the register serve as inputs to the

internal state machine. The state machine outputs dictate the

function of the device. The appropriate device bus operations

table lists the inputs and control levels required, and the

resulting output. The following subsections describe each of

these operations in further detail.

Table 1. A29DL32x Device Bus Operations

Operation

A0 – A20

(Note 1)

I/O0 - I/O7

I/O⁸- I/O15

=VIH

/ACC

RESET

=VIL

BYTE

Read

L/H

AIN

DOUT

DIN

DOUT

DIN

I/O8~I/O15=High-Z

I/O8~I/O14=High-Z

I/O¹⁵=A-1

Write

(Note 3)

Standby

High-Z

VCC ±

0.3 V

VCC ±

0.3 V

Output Disable

Reset

L/H

High-Z

D^IN

High-Z

Sector Protect

(See Note 2)

V^ID

SA, A6=L,

A1=H, A0=L

Sector Unprotect

(See Note 2)

V^ID

(Note 3)

SA, A6=H,

A1=H, A0=L

D^IN

Temporary Sector

Unprotect

AIN

DIN

High-Z

Legend:

L = Logic Low = V^IL, H = Logic High = VIH, VID = 8.5 -12.5V, VHH = 9.0 ± 0.5 V, X = Don’t Care, SA = Sector Address, AIN =

Address In, D^IN= Data In, DOUT = Data Out

Notes:

1. Addresses are A20:A0 in word mode (

=VIH), A20: A-1 in byte mode (

=VIL).

BYTE

2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the

“Sector/Sector Block Protection and Unprotection” section.

3. If

/ACC = VIL, the two outermost boot sectors remain protected. If

/ACC = VIH, the two outermost boot sector

protection depends on whether they were last protected or unprotected using the method described in “Sector/Sector Block

Protection and Unprotection”. If /ACC = VHH all sectors will be unprotected.

PRELIMINARY (May, 2005, Version 0.0)

AMIC Technology, Corp.

1...3 4 567 8 9...50

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