m58wr064kt Numonyx, m58wr064kt Datasheet - Page 34

• Manufacturer Part Number: m58wr064kt
• Description: 16-, 32-, 64-mbit ?16, Multiple Bank, Burst 1.8 V Supply Flash Memories
• Manufacturer: Numonyx

Command interface - factory program commands
6.3
6.3.1
6.3.2
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Enhanced Factory Program command
The Enhanced Factory Program command programs 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 continues to work properly but some degradation in performance is possible.
Typical program times are given in
If the block is protected then the Enhanced Factory Program operation aborts, the data in
the block does not change, and the Status Register outputs 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
Factory program
Setup phase
The Enhanced Factory Program command requires two bus write operations to initiate the
command:
●
●
The Status Register P/EC bit SR7 should be read to check that the P/EC is ready. After the
confirm command is issued, read operations output the Status Register data. The read
Status Register command must not be issued or it is interpreted as data to program.
If the second bus cycle is not EFP confirm (D0h), Status Register bits SR4 and SR5 are set
and the command aborts.
V
are set and command are aborted.
Program phase
The program phase requires n+1 cycles, where n is the number of words (refer to
Factory program
Three successive steps are required to issue and execute the program phase of the
command:
1.
PP
value must be in the V
The first bus cycle sets up the Enhanced Factory Program command
The second bus cycle confirms the command.
Use one bus write operation to latch the start address and the first word to be
programmed, where the start address is the location of the first data to be
programmed. The Status Register Bank Write Status bit SR0 should be read to check
that the P/EC is ready for the next word.
commands, and
commands, and
PPH
range during the confirm command, otherwise SR4 and SR3
Figure 31: Enhanced factory program
Figure 31: Enhanced factory program
Table 18
M58WRxxxKT, M58WRxxxKB
flowchart.
flowchart).
Table 9:
Table 9: