M58PR512LE datasheet(43/119 Pages) STMICROELECTRONICS

43 / 119 page

M58PR256LE, M58PR512LE, M58PR001LE

Program operations

43/119

Figure 5.

Program regions configured in control or object program mode

5.3

Program methods

The device supports two types of program methods:

●

Single word program method, which is used to program a single word to a specific

address of the memory array.

●

Buffered program methods, which can be split into two different methods:

–

Buffer program method, which uses the device's write buffer to speed up

programming. The data is written into the write buffer and then programmed to the

specified block address.

–

Buffer enhanced factory program method, which is developed to speed up

programming in manufacturing environments where the programming time is

critical. The data is written in the write buffer and then programmed to the

specified block.

The following sections describe the relationship between program commands and program

methods in detail. See Table 13: Relationships between program methods and program

modes and Table 12: Program methods available with each program mode.

Program region 0

1 Kbyte (512 byte programmable)

128 Kword BLOCK

Data 2

Data 4

F F F F F F F F

SEGMENT 30

Data (n – 4)

Data (n – 2)

Data n

SEGMENT 3

SEGMENT 2

SEGMENT 1

SEGMENT 0

...

Program region in control program mode

F F F F F F F F

A halves

(A3 = 0)

B halves

(A3 = 1)

...

Object

1 Kbyte

ai10135

SEGMENT 31

Program region 1

1 Kbyte (512 byte programmable)

Program region 254

1 Kbyte (512 byte programmable)

Program region 255

1 Kbyte (512 byte programmable)

Data 1

Data 3

Data (n – 3)

Data (n – 1)

SEGMENT 30

SEGMENT 3

SEGMENT 2

SEGMENT 1

SEGMENT 0

SEGMENT 31

F F F F F F F F F F F F F F F F

F F F F F F

Program region in object program mode

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