MX29LV640D MCNIX [Macronix International], MX29LV640D Datasheet - Page 22

• Manufacturer Part Number: MX29LV640D
• Description: 64M-BIT [8M x 8/4M x 16] SINGLE VOLTAGE 3V
• Manufacturer: MCNIX [Macronix International]

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 MX29LV640D T/B 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 MX29LV640D T/B is less than 45 seconds.
P/N:PM1208
Status
In progress*1
Finished
Exceed time limit
Q7#
Q7#
Q7
Q7
Stop toggling
Toggling
togging
22
Q6
MX29LV640D T/B
Q5
0
1
0
REV. 1.6, AUG. 16, 2008
RY/BY#*2
0
1
0