ST52F510 datasheet(22/106 Pages) STMICROELECTRONICS

22 / 106 page

ST52F510/F513/F514

22/106

NVM is always located beginning after the first

locations of the addressing space. RAM banks are

always located after NVM.

NVM is organized in accordance to the following

blocks (see Figure 3.2):

Reset Vector block (from address 0 to 2)

contains an absolute jump instruction to the first

user program instruction. The Assembler tool

automatically fills these locations with correct

data.

Interrupt Vectors block (from location 3 up to

32) contains the interrupt vectors. Each address

is composed of three bytes (the jump opcode

and the 16 bit address). Interrupt vectors are set

by using IRQ pseudo-instruction (see the

Programming Manual).

Figure 3.2 Program/Data Memory Organization

Mbfs Setting block (just after the interrupt

vectors) contains the coordinates of the vertexes

of every Mbf defined in the program. The last

address that can be assigned to this block is

1023.

This

area

dynamically

assigned

according to the size of the fuzzy routines. The

memory area that remains unused, if any, is

assigned to the Program Instructions block.

The Program Instructions block (just after the

last Mbf data through the last NVM address)

contains the instruction of the user program and

the permanent data.

Option bytes block (from location

3000h to

307Fh) is the addressing space reserved for the

option bytes. In ST52F510/F513/F514, only the

location from 3000h to 3007h are used.

RESET VECTOR

INTERRUPT VECTORS

MEMBERSHIP FUNCTIONS

PARAMETERS

PROGRAM INSTRUCTIONS

AND PERMANENT DATA

PROGRAM INSTRUCTIONS

AND PERMANENT DATA

RAM

BENCH

NON

VOLATILE

MEMORY

OPTION BYTES

0000h

0003h

0021h

0400h

3000h

307Fh

SYSTEM STACK

DATA

USER STACK

20FFh

2000h

SPACE NOT

ADDRESSABLE

FFFFh

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