M58WR016QT datasheet(30/110 Pages) NUMONYX

Part #	M58WR016QT

Description	16 Mbit and 32 Mbit (x16, Multiple Bank, Burst) 1.8V supply Flash memories

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Manufacturer	NUMONYX [Numonyx B.V]

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Command interface - factory program commands

M58WR016QT, M58WR016QB, M58WR032QT,

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6.3

Quadruple Word Program command

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

page of four adjacent words in parallel. The four words must differ only for the addresses A0

and A1. If the block is protected, the Quadruple Word Program operation will abort, the data

in the block will not be changed and the Status Register will output the error.

Five bus write cycles are necessary to issue the Quadruple 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.

●

The fourth bus cycle latches the Address and the Data of the third word to be written.

●

The fifth bus cycle latches the Address and the Data of the fourth word to be written

and starts the Program/Erase Controller.

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

programming has started.

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.

During Quadruple Word Program operations the bank being programmed will only accept

the Read Array, Read Status Register, Read Electronic Signature and Read CFI Query

command, all other commands will be ignored.

Dual operations are not supported during Quadruple Word Program operations and the

command cannot be suspended. Typical Program times are given in Table 15:

Program/Erase times and endurance cycles.

See Appendix C, Figure 22: Quadruple Word Program flowchart and pseudo code, for the

flowchart for using the Quadruple Word Program command.

6.4

Enhanced Factory Program command

The Enhanced Factory Program command can be used to program large streams of data

within any one block. It greatly reduces the total programming time when a large number of

Words are written to a block at any one time.

Dual operations are not supported during the Enhanced Factory Program operation and the

command cannot be suspended.

For optimum performance the Enhanced Factory Program commands should be limited to a

maximum of 10 program/erase cycles per block. If this limit is exceeded the internal

algorithm will continue to work properly but some degradation in performance is possible.

Typical Program times are given in Table 15. If the block is protected, the Enhanced Factory

Program operation will abort, the data in the block will not be changed and the Status

Register will output the error.

The Enhanced Factory Program command has four phases: the Setup Phase, the Program

Phase to program the data to the memory, the Verify Phase to check that the data has been

correctly programmed and reprogram if necessary and the Exit Phase. Refer to Table 8:

Factory Program commands, and Figure 28: Enhanced Factory Program flowchart.

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M58WR016QT Datasheet(PDF) 30 Page - Numonyx B.V

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