MX29F800CB 데이터 시트보기 (PDF) - Integrated Device Technology

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MX29F800CB

8M-BIT [1024K x 8 / 512K x 16] SINGLE VOLTAGE 5V ONLY FLASH MEMORY

Integrated Device Technology 

MX29F800C T/B

AUTOMATIC PROGRAMMING

The MX29F800C 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.

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 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.

With the internal write state controller, the device requires the user to write the program command and data only.

The typical chip program time at room temperature of the MX29F800C T/B is 3 seconds. (Word-Mode)

When the embedded program operation is on going, user can confirm if the embedded operation is finished or

not by the following methods:

Status

In progress*1

Finished

Exceed time limit

Q7

Q6

Q7#

Toggling

Q7

Stop toggling

Q7#

Toggling

Q5

RY/BY#*2

0

0

0

1

1

0

*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 and the device returns to read array state without programing the data in the protected

sector.

P/N:PM1493

REV. 1.2, JUL. 05, 2012

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