EN29LV800A 데이터 시트보기 (PDF) - Eon Silicon Solution Inc.

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EN29LV800A

8 Megabit (1024K x 8-bit / 512K x 16-bit) Flash Memory Boot Sector Flash Memory, CMOS 3.0 Volt-only

Eon Silicon Solution Inc. 

EN29LV800A

COMMAND DEFINITIONS

The operations of EN29LV800A are selected by one or more commands written into the command

register to perform Read/Reset Memory, Read ID, Read Sector Protection, Program, Sector Erase,

Chip Erase, Erase Suspend and Erase Resume. Commands are made up of data sequences

written at specific addresses via the command register. The sequences for the specified operation

are defined in the Command Definitions table (Table 5). Incorrect addresses, incorrect data values

or improper sequences will reset the device to Read Mode.

Table 5. EN29LV800A Command Definitions

Bus Cycles

Command

Sequence

1st

Cycle

2nd

Cycle

3rd

Cycle

4th

Cycle

5th

Cycle

Addr Data Addr Data Addr Data Addr Data Addr Data

Read

1 RA RD

Reset

1 xxx F0

Manufacturer

ID

Word

4

Byte

555

AA

AAA

2AA

55

555

555

90

AAA

000/ 7F/

100 1C

000/ 7F/

200 1C

Device ID

Top Boot

Word 4 555 AA 2AA 55

Byte

AAA

555

555 90

AAA

X01 22DA

X02 DA

Device ID

Bottom Boot

Word 4 555 AA 2AA 55

Byte

AAA

555

555 90

AAA

X01 225B

X02 5B

Word

Sector Protect

Verify

Byte

4

555

AA

AAA

2AA

55

555

555

90

AAA

(SA)

X02

(SA)

X04

XX00

XX01

00

01

Program

Word

Byte

4

555

AAA

AA

2AA

555

55

555

AAA

A0

PA PD

Unlock Bypass

Word

Byte

3

555

AAA

AA

2AA

555

55

555

AAA

20

Unlock Bypass Program 2 XXX A0 PA PD

Unlock Bypass Reset

2 XXX 90 XXX 00

Chip Erase

Word

Byte

6

555

AAA

AA

2AA

555

55

555

AAA

80

555

AAA

AA

2AA

555

55

Sector Erase

Word

Byte

6

555

AAA

AA

2AA

555

55

555

AAA

80

555

AAA

AA

2AA

555

55

Erase Suspend

1 xxx B0

Erase Resume

1 xxx 30

Address and Data values indicated in hex

RA = Read Address: address of the memory location to be read. This is a read cycle.

RD = Read Data: data read from location RA during Read operation. This is a read cycle.

PA = Program Address: address of the memory location to be programmed. X = Don’t-Care

PD = Program Data: data to be programmed at location PA

SA = Sector Address: address of the Sector to be erased or verified. Address bits A18-A12 uniquely select any Sector.

6th

Cycle

Addr Data

555

AAA

10

SA 30

Reading Array Data

The device is automatically set to reading array data after 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.

Following an Erase Suspend command, Erase Suspend mode is entered. The system can read

array data using the standard read timings, with the only difference in that if it reads at an address

within erase suspended sectors, the device outputs status data. After completing a programming

This Data Sheet may be revised by subsequent versions 11 ©2004 Eon Silicon Solution, Inc., www.essi.com.tw

or modifications due to changes in technical specifications.

Rev. C, Issue Date: 2005/01/10

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