Embedded Flash memory (FLASH) for category 2 devices RM0440
204/2126 RM0440 Rev 4
WRP2 Area A address option bytes
Flash memory address: 0x1FFF 7820
ST production value: 0xFF00 FFFF
Securable memory area option bytes
Flash memory address: 0x1FFF7828
ST production value: 0xFF00 FF00
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. WRP2A_END[5:0]
rw rw rw rw rw rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. WRP2A_STRT[5:0]
rw rw rw rw rw rw
Bits 31:22 Reserved, must be kept at reset value.
Bits 21:16 WRP2A_END: WRP second area “B” end offset
WRP1B_END contains the last page of the WRP second area.
Bits 15:6 Reserved, must be kept at reset value.
Bits 5:0 WRP2A_STRT: WRP second area start offset
WRP1B_STRT contains the last page of the WRP second area.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res.
BOOT_
LOCK
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Res. Res. Res. Res. Res. Res. Res. Res. SEC_SIZE1[7:0]
rw rw rw rw rw rw rw rw
Bits 31:17 Reserved, must be kept at reset value.
Bit 16 BOOT_LOCK used to force boot from user Flash area
0: Boot based on the pad/option bit configuration
1: Boot forced from Main Flash memory
Caution: If BOOT_LOCK is set in association with RDP Level 1, the debug
capabilities of the device are stopped and the reset value of the
DBG_SWEN bit of the FLASH_ACR register becomes zero. If the
DBG_SWEN bit is not set by the application code after reset, there is
no way to recover from this situation.
Bits 15:8 Reserved, must be kept at reset value.
Bits 7:0 SEC_SIZE1 Securable memory area size
Contains the number of Securable Flash memory pages
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