Id Codes And Locking Mechanism - STMicroelectronics STM32F405 Reference Manual

RM0090
38.6

ID codes and locking mechanism

There are several ID codes inside the STM32F4xx MCUs. ST strongly recommends tools
designers to lock their debuggers using the MCU DEVICE ID code located in the external
PPB memory map at address 0xE0042000.
38.6.1 MCU device ID code
The STM32F4xx MCUs integrate an MCU ID code. This ID identifies the ST MCU part-
number and the die revision. It is part of the DBG_MCU component and is mapped on the
external PPB bus (see
JTAG debug port (4 to 5 pins) or the SW debug port (two pins) or by the user software. It is
even accessible while the MCU is under system reset.
Only the DEV_ID(11:0) should be used for identification by the debugger/programmer tools.
DBGMCU_IDCODE
Address: 0xE004 2000
Only 32-bits access supported. Read-only.
31 30 29 28
r r r
15 14 13 12
Reserved
Bits 31:16 REV_ID[15:0] Revision identifier
Bits 15:12
Bits 11:0 DEV_ID[11:0]: Device identifier (STM32F405xx/07xx and STM32F415xx/17xx)
Bits 11:0 DEV_ID[11:0]: Device identifier (STM32F42xxx and STM32F43xxx)
Section 38.16 on page
27 26 25
r r r r
11 10 9
r r r
This field indicates the revision of the device.
STM32F405xx/07xx and STM32F415xx/17xx devices:
0x1000 = Revision A
0x1001 = Revision Z
0x1003 = Revision 1
0x1007 = Revision 2
0x100F= Revision Y
STM32F42xxx and STM32F43xxx devices:
0x1000 = Revision A
0x1003 = Revision Y
0x1007 = Revision 1
0x2001= Revision 3
Reserved, must be kept at reset value.
The device ID is 0x413.
The device ID is 0x419
DocID018909 Rev 11
1690). This code is accessible using the
24 23 22 21
REV_ID
r r r r
8 7 6 5
DEV_ID
r r r r
Debug support (DBG)
20 19 18 17
r r r r
4 3 2 1
r r r r
1677/1731
16
r
0
r
1701