STM8S003F3P6 データシートの表示（PDF） - STMicroelectronics

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STM8S003F3P6

Value line, 16-MHz STM8S 8-bit MCU, 8-Kbyte Flash memory, 128-byte data EEPROM, 10-bit ADC, 3 timers, UART, SPI, I²C

STMicroelectronics 

Product overview

STM8S003F3 STM8S003K3

The size of the UBC is programmable through the UBC option byte (Table 13), in increments

of 1 page (64-byte block) by programming the UBC option byte in ICP mode.

This divides the program memory into two areas:

• Main program memory: 8 Kbyte minus UBC

• User-specific boot code (UBC): Configurable up to 8 Kbyte

The UBC area remains write-protected during in-application programming. This means that

the MASS keys do not unlock the UBC area. It protects the memory used to store the boot

program, specific code libraries, reset and interrupt vectors, the reset routine and usually

the IAP and communication routines.

Figure 2. Flash memory organization

Option bytes

Low density

Flash program

memory

(8 Kbytes)

Data EEPROM (128 bytes)

UBC area

Remains write protected during IAP

Program memory area

Write access possible for IAP

Programmable

area from 64 bytes

(1 page) up to

8 Kbytes

(in 1 page steps)

MS36408V1

Read-out protection (ROP)

The read-out protection blocks reading and writing from/to the Flash program memory and

data EEPROM memory in ICP mode (and debug mode). Once the read-out protection is

activated, any attempt to toggle its status triggers a global erase of the program memory.

Even if no protection can be considered as totally unbreakable, the feature provides a very

high level of protection for a general purpose microcontroller.

14/103

DS7147 Rev 10

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