Memory organization

PM0054

12/28

Doc ID 15433 Rev 9

3.5

High density STM8L05x/15x/16x microcontrollers

The high density STM8L05x/15x/16x memory features:

●

64 Kbytes of embedded Flash program divided into 256 pages of two blocks (2x128

bytes) each. The memory array is organized in 32-bit words (4 bytes). It includes three

areas:

The Flash program memory is divided into 3 areas:

–

The proprietary code area (PCODE)

–

The user boot code area (UBC)

–

The main program area

The size of PCODE and UBC areas can be configured through option bytes.

●

Up to 2 Kbytes of data EEPROM located in a distinct array from Flash program memory

●

Up to 128 option bytes (one block) of which 5 bytes are already used to configure

device hardware features. The option bytes can be programmed in user, IAP and

ICP/SWIM modes except for ROP, UBC and PCODESIZE option bytes (refer to

Section 5.5.2).

Refer to Table 6 for a detailed description of the memory partition for high density

STM8L05x/15x/16x microcontrollers.

Table 6.

High density STM8L05x/15x/16x memory partition

Area

Page number (1 page = 2 blocks)

Address

Data EEPROM

0

0x00 1000-0x00 10FF

1

0x00 1100-0x00 11FF

2

0x00 1200-0x00 12FF

...

...

7

0x00 1700-0x00 17FF

Option bytes

0

0x00 4800-0x00 487F

Flash

program

memory

Main

program

memory

PCODE, UBC

0

0x00 8000-0x00 80FF

1

0x00 8100-0x00 81FF

2

0x00 8200-0x00 82FF

3

0x00 8300-0x00 83FF

4

0x00 8400-0x00 84FF

...

...

255

0x01 7F00-0x01 7FFF