MX29LV400CBTC-70G Macronix, MX29LV400CBTC-70G Datasheet - Page 25

• Manufacturer Part Number: MX29LV400CBTC-70G
• Description: MX29LV Series 3 V 4 Mb (524k x 8/256k x 16) 70 ns Parallel Flash - TSOP-48
• Manufacturer: Macronix

AUTOMATIC PROGRAMMING
The MX29LV400C/MX29LV800C/MX29LV160C 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 algo-
rithms 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 termi-
nate the program operation after a period of time no more than Tready1. 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 MX29LV400C/MX29LV800C/MX29LV160C T/B is less
than 36 seconds.
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 pro-
tected sector.
P/N:PM1300
Status
In progress*1
Finished
Exceed time limit
Q7#
Q7#
Q7
Q7
Stop toggling
Toggling
Toggling
Q6
25
MX29LV400C T/B
MX29LV800C T/B
MX29LV160C T/B
Q5
0
0
1
REV. 2.6, DEC. 22, 2011
RY/BY#*2
0
1
0