M58PR256LE datasheet(45/119 Pages) STMICROELECTRONICS

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M58PR256LE, M58PR512LE, M58PR001LE

Program operations

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5.3.3

Buffer enhanced factory program method

The buffer enhanced factory program method is based on the Buffer Enhanced Factory

Program command.

The buffer enhanced factory program method is supported by the program regions,

regardless of the program mode in which they are configured.

In this program method, the program region (1 Kbyte) must be completely filled, regardless

of the program mode used. If the size of the data to be written is less than 1 Kbyte, the

remaining addresses in the program region must be filled with FFFFh.

When using the buffer enhanced factory program method in a program region configured in

the control program mode, the addresses to be programmed must be located in the ’A’ half

of the program regions’ segments (A3 = 0) and the ’B’ half of the segments (A3 = 1) must be

filled only with FFFFh.

See Section 4: Command interface for a detailed description of the Buffer Enhanced Factory

Program command.

Table 12.

Program methods available with each program mode

Program mode

Program methods(1)

X means available.

Single word

program

Buffered program

Buffer program

Buffer enhanced factory

Program

Control program mode

Object program mode

Table 13.

Relationships between program methods and program modes

Program region

status

Address bit A3

value

Program method

Buffered program

Single word program

Buffer

program

Buffer enhanced

factory program

Erased

A3 = 0 (’A’ half)

Program region configured in control

program mode

Program region

configured in control

program mode

A3 = 1 (’B’ half)

Program region configured in object

program mode

Not allowed.

Program aborted, Status

and SR9 set

Control program

mode

A3 = 0 (’A’ half) Program operation successful

A3 = 1 (’B’ half)

Not allowed.

Program aborted, Status Register Error bits SR4 and SR9 set

Object program

mode

A3 = 0 (’A’ half) Subsequent program not allowed.

Program aborted, Status Register Error bits SR4 and SR8 set

A3 = 1 (’B’ half)

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