MX29LV640BB View Datasheet(PDF) - Macronix International

Part Name

Description

Manufacturer

MX29LV640BB

64M-BIT [8M x 8/4M x 16] SINGLE VOLTAGE 3V ONLY FLASH MEMORY

Macronix International 

MX29LV640BT/BB

WRITE OPERATION STATUS

The device provides several bits to determine the status

of a write operation: Q2, Q3, Q5, Q6, Q7, and RY/BY#.

Table 5 and the following subsections describe the func-

tions of these bits. Q7, RY/BY#, and Q6 each offer a

method for determining whether a program or erase op-

eration is complete or in progress. These three bits are

discussed first.

Table 5. Write Operation Status

Status

Q7 Q6 Q5 Q3 Q2 RY/BY#

Note1

Note2

Byte/Word Program in Auto Program Algorithm

Q7 Toggle 0 N/A No

0

Toggle

Auto Erase Algorithm

0 Toggle 0

1 Toggle 0

In Progress

Erase Suspended Mode

Erase Suspend Read

(Erase Suspended Sector)

1

No 0 N/A Toggle 1

Toggle

Erase Suspend Read

Data Data Data Data Data 1

(Non-Erase Suspended Sector)

Erase Suspend Program

Q7 Toggle 0 N/A N/A

0

Byte/Word Program in Auto Program Algorithm

Exceeded

Time Limits Auto Erase Algorithm

Erase Suspend Program

Q7 Toggle 1 N/A No

0

Toggle

0 Toggle 1

1 Toggle 0

Q7 Toggle 1 N/A N/A

0

Notes:

1. Performing successive read operations from the erase-suspended sector will cause Q2 to toggle.

2. Performing successive read operations from any address will cause Q6 to toggle.

3. Reading the byte address being programmed while in the erase-suspend program mode will indicate logic "1" at the

Q2 bit.

However, successive reads from the erase-suspended sector will cause Q2 to toggle.

P/N:PM1076

REV. 1.2, SEP. 07, 2005

28

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