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PM0051 Datasheet(PDF) 2 Page - STMicroelectronics |
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PM0051 Datasheet(HTML) 2 Page - STMicroelectronics |
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2 / 27 page ![]() Contents PM0051 2/27 Doc ID 14614 Rev 3 Contents 1 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Memory organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 Low density STM8S microcontrollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Medium density STM8S microcontrollers . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3 High density STM8S microcontrollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 Medium density STM8A microcontrollers . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.5 High density STM8A microcontrollers . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3 Memory protection strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.1 Readout protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.2 User Boot Code area protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.3 Unwanted memory access protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4 Programming STM8 Flash microcontrollers . . . . . . . . . . . . . . . . . . . . . 16 4.1 Unlocking the Memory Access Security System (MASS) . . . . . . . . . . . . 16 4.2 Block programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4.3 Word programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.4 Byte programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.5 Programming the option bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.5.1 Summary of memory dedicated option bytes . . . . . . . . . . . . . . . . . . . . 22 4.5.2 How to program the option bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.6 Memory access versus programming method . . . . . . . . . . . . . . . . . . . . . 23 4.6.1 ICP methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.6.2 IAP method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5 Flash program memory and data EEPROM comparison . . . . . . . . . . . 25 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 |
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