Debug support (DBG) RM0090
1690/1749 RM0090 Rev 18
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 Section 38.16). This code is accessible using the JTAG debug port
(four to five 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 27 26 25 24 23 22 21 20 19 18 17 16
REV_ID[15:0]
rrrrrr r r r r rrrrrr
1514131211109876543210
Reserved
DEV_ID[11:0]
rrrrrrrrrrrr
Bits 31:16 REV_ID[15:0] Revision identifier
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 and 4
STM32F42xxx and STM32F43xxx devices:
0x1000 = Revision A
0x1003 = Revision Y
0x1007 = Revision 1
0x2001= Revision 3
0x2003= Revision 5 and B
Bits 15:12 Reserved, must be kept at reset value.
Bits 11:0 DEV_ID[11:0]: Device identifier (STM32F405xx/07xx and STM32F415xx/17xx)
The device ID is 0x413.
Bits 11:0 DEV_ID[11:0]: Device identifier (STM32F42xxx and STM32F43xxx)
The device ID is 0x419
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