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PM0059 Datasheet(PDF) 2 Page - STMicroelectronics

Part # PM0059
Description  This programming manual describes how to program
PDF  29 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM0059 Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
PM0059
2/29
DocID15687 Rev 5
Contents
1
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Flash memory interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2
Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3
Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4
Read interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4.1
Relation between CPU clock frequency and Flash memory read time . . 8
2.4.2
Adaptive real-time memory accelerator (ART Accelerator™) . . . . . . . . . 9
2.5
Erase and program operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.5.1
Unlocking the Flash control register . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5.2
Program/erase parallelism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5.3
Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5.4
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.5.5
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.6
Option bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.6.1
Description of user option bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.6.2
Programming user option bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.6.3
Read protection (RDP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.6.4
Write protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.7
One-time programmable bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.8
Flash interface registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.8.1
Flash access control register (FLASH_ACR) . . . . . . . . . . . . . . . . . . . . 20
2.8.2
Flash key register (FLASH_KEYR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.8.3
Flash option key register (FLASH_OPTKEYR) . . . . . . . . . . . . . . . . . . . 21
2.8.4
Flash status register (FLASH_SR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.8.5
Flash control register (FLASH_CR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.8.6
Flash option control register (FLASH_OPTCR) . . . . . . . . . . . . . . . . . . . 24
2.8.7
Flash interface register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27



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