RM0312 datasheet(26/275 Pages) STMICROELECTRONICS

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Flash program memory and data EEPROM

RM0312

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DocID022352 Rev 3

4.4

Memory organization

The STM8TL5xxx touch sensing Flash program memory is divided into 256 pages of 64

bytes each. It is organized in 32-bit words (4 bytes per word).

The memory array is divided into four areas:

•

The proprietary code area (PCODE)

•

The user boot code area (UBC)

•

The main program area

•

The data EEPROM (DATA)

The first two pages of the Flash program memory (starting from address 0x00 8000) contain

the interrupt vectors.

The devices also feature one block of option bytes (64 bytes) located a separate memory

array.

See Figure 4 for a description of the memory organization.

Figure 4. STM8TL5xxx Flash program and data EEPROM organization

AI14156e

USER BOOT CODE (UBC)

(permanently write protected)

0x00 8000

MAIN PROGRAM

(write access possible for IAP

and using MASS mechanism)

0x00 BFFF

Programmable size

from 3 pages

up to 255 pages

Min start address: 0x00 B800

DATA EEPROM (DATA)

(up to 16 Kbytes)

Flash program

memory

and Data EEPROM

Interrupt vectors (2 pages)

OPTION BYTES (64 bytes)

0x00 4800

0x00 483F

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