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PM0068 Datasheet(PDF) 21 Page - STMicroelectronics

No. de pieza PM0068
Descripción Electrónicos  STM32F10xxx XL-density Flash programming
PDF  31 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM0068 Datasheet(HTML) 21 Page - STMicroelectronics

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PM0068
Register descriptions
Doc ID 17100 Rev 2
21/31
3.2
FPEC key register (FLASH_KEYR)
This register is dedicated to Flash memory bank 1.
Address offset: 0x04
Reset value: xxxx xxxx
Note:
These bits are all write-only and will return a 0 when read.
3.3
Flash OPTKEY register (FLASH_OPTKEYR)
Address offset: 0x08
Reset value: xxxxx xxxx
Note:
These bits are all write-only and will return a 0 when read.
Bits 2:0 LATENCY: Latency
These bits represent the ratio of the SYSCLK (system clock) period to the Flash access
time.
000 Zero wait state, if 0 < SYSCLK
≤ 24 MHz
001 One wait state, if 24 MHz < SYSCLK
≤ 48 MHz
010 Two wait states, if 48 MHz < SYSCLK
≤ 72 MHz
31
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FKEYR[31:16]
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FKEYR[15:0]
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Bits 31:0 FKEYR: FPEC key
These bits represent the keys to unlock the FPEC.
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OPTKEYR[31:16]
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OPTKEYR[15:0]
wwww
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Bits 31:0
OPTKEYR: Option byte key
These bits represent the keys to unlock the OPTWRE.



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