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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN2645 датащи(PDF) 32 Page - STMicroelectronics |
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AN2645 датащи(HTML) 32 Page - STMicroelectronics |
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32 / 36 page  Block-by-block compatibility analysis AN2645 32/36 3.7.3 BootROM memory The BootROM memory, containing the bootloader code, is present in the STM8S20xx and STM8S105x sub-families. It is not present in the STM8S103x sub-family. The BootROM size is 2KB and its start address is always 0x6000. 3.7.4 RAM memory The RAM memory always starts from address 0. The first 256 bytes make up the zero page. 3.7.5 Stack The space for the stack is always located at the end of the SRAM memory. So its position in the address space varies depending on the SRAM memory size. The stack pointer value is initialized to the upper address at reset and it is decremented each time a byte is pushed in. The stack size is 1024 bytes in Performance line devices and 512 bytes in other STM8S Table 27. Data EEPROM memory size in bytes for each sub-family/Flash size Sub-family Flash Program memory size (bytes) 128K 64K 32K 16K 8K 4K STM8S208x 2048 STM8S207x 2048 1536 1024 STM8S105x 1024 1024 STM8S103x 640(1) 1. No read-while-write (RWW) capability 640(1) STM8S903x 640(1) Table 28. Data EEPROM memory granularity in each sub-family Sub-family Number of pages Page size [bytes] Blocks per page Block size [bytes] STM8S20xx up to 4 512 4 128 STM8S105x up to 2 512 4 128 STM8S103x 10 64 1 64 STM8S903x 10 64 1 64 Table 29. RAM memory size (bytes) for each sub-family/Flash size Sub-family Flash Program memory size (bytes) 128K 64K 32K 16K 8K 4K STM8S208x 6K STM8S207x 6K 4K 2K STM8S105x 2K 2K STM8S103x 1K 1K STM8S903x 1K |
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