M58WT032KB datasheet(29/117 Pages) NUMONYX

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M58WTxxxKT, M58WTxxxKB

Command interface - factory program commands

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Command interface - factory program commands

The factory program commands are specifically designed to speed up programming. They

require VPP to be at VPPH. Refer to Table 8: Factory program commands in conjunction with

the descriptions in this section.

The use of factory program commands requires certain operating conditions:

●

VPP must be set to VPPH.

●

VDD must be within operating range.

●

Ambient temperature, TA must be 25°C ± 5°C.

●

The targeted block must be unlocked.

6.1

Double Word Program command

The Double Word Program command improves the programming throughput by writing a

page of two adjacent words in parallel. The two words must only differ for the address A0.

If the block is protected, then the Double Word Program operation aborts, the data in the

block does not change, and the Status Register outputs the error.

VPP must be set to VPPH during Double Word Program, otherwise the command is ignored

and the Status Register does not output any error.

Three bus write cycles are necessary to issue the Double Word Program command:

●

The first bus cycle sets up the Double Word Program command.

●

The second bus cycle latches the address and the data of the first word to be written.

●

The third bus cycle latches the address and the data of the second word to be written

and starts the Program/Erase Controller.

Read operations in the bank being programmed output the Status Register content after the

programming has started.

During double word program operations the bank being programmed only accepts the Read

Array, Read Status Register, Read Electronic Signature and Read CFI Query commands; all

other commands are ignored. Dual operations are not supported during double word

program operations and the command cannot be suspended. Typical program times are

given in Table 17: Program/erase times and endurance cycles.

Programming aborts if Reset goes to VIL. As data integrity cannot be guaranteed when the

program operation is aborted, the memory locations must be reprogrammed.

See Appendix C, Figure 21: Double word program flowchart and pseudo code for the

flowchart for using the Double Word Program command.

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