MX29LAA641D MCNIX [Macronix International], MX29LAA641D Datasheet - Page 20

Manufacturer Part Number

MX29LAA641D

Description

64M-BIT [4M x 16/8M x 8] CMOS EQUAL SECTOR

Manufacturer

MCNIX [Macronix International]

Datasheet

1.MX29LAA641D.pdf (63 pages)

When the embedded program operation is on going, user can confirm if the embedded operation is finished or not by

the following methods:

*1: The status "in progress" means both program mode and erase-suspended program mode.

*2: RY/BY# is an open drain output pin and should be weakly connected to VDD through a pull-up resistor.

*3: When an attempt is made to program a protected sector, Q7 will output its complement data or Q6 continues to

toggle for about 1us or less and the device returns to read array state without programing the data in the protected

sector.

AUTOMATIC PROGRAMMING

The MX29LA641D H/L can provide the user program function by the form of Byte-Mode or Word-Mode. As long as the

users enter the right cycle defined in the Table.3 (including 2 unlock cycles and A0H), any data user inputs will

automatically be programmed into the array.

Once the program function is executed, the internal write state controller will automatically execute the algorithms and

timings necessary for program and verification, which includes generating suitable program pulse, verifying whether the

threshold voltage of the programmed cell is high enough and repeating the program pulse if any of the cells does not

pass verification. Meanwhile, the internal control will prohibit the programming to cells that pass verification while the

other cells fail in verification in order to avoid over-programming. With the internal write state controller, the device

requires the user to write the program command and data only.

Programming will only change the bit status from "1" to "0". That is to say, it is impossible to convert the bit status from

"0" to "1" by programming. Meanwhile, the internal write verification only detects the errors of the "1" that is not

successfully programmed to "0".

Any command written to the device during programming will be ignored except hardware reset, which will terminate the

program operation after a period of time no more than Tready. When the embedded program algorithm is complete or

the program operation is terminated by hardware reset, the device will return to the reading array data mode.

The typical chip program time at room temperature of the MX29LA641D H/L is less than 45 seconds.

P/N:PM1289

Status

In progress*1

Finished

Exceed time limit

Q7#

Stop toggling

Toggling

MX29LA641D H/L

REV. 1.1, JAN. 06, 2009

RY/BY#*2