PM0054

Memory organization

Doc ID 15433 Rev 9

11/28

3.4

Medium+ density STM8L15x microcontrollers

The medium+ density STM8L15x memory features:

●

32 Kbytes of embedded Flash program divided into 128 pages of 256 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 the PCODE and UBC areas can be configured through option bytes.

●

1 Kbyte 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 and UBC option bytes (refer to Section 5.5.2).

Refer to the following table for a detailed description of the memory partition for medium+

density STM8L15x microcontrollers.

Table 5.

Medium+ density STM8L15x/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

...

...

127

0x00 FF00-0x00 FFFF