ST STM8

Debug module (DM) UM0470
28/39 DocID14024 Rev 4
4.12 DM registers
These registers are read/write only through the SWIM interface.
In this section, the following abbreviations are used:
4.12.1 DM breakpoint register 1 extended byte (DM_BKR1E)
STM8 Address: 7F90h
Reset value: 1111 1111 (FFh)
4.12.2 DM breakpoint register 1 high byte (DM_BKR1H)
Address: 7F91h
Reset value: 1111 1111 (FFh)
4.12.3 DM breakpoint register 1 low byte (DM_BKR1L)
Address: 7F92h
Reset value: 1111 1111 (FFh)
read/write (rw) The SWIM can read and write to these bits via the ROTF/WOTF commands.
read-only (r) The SWIM can only read these bits via the ROTF command.
76543210
BK1[23:16]
rw rw rw rw rw rw rw rw
Bits 7:0
BK1[23:16]: Breakpoint 1 extended byte value
This register is written by software to define the extended address bits of breakpoint 1.
76543210
BK1[15:8]
rw rw rw rw rw rw rw rw
Bits 7:0
BK1[15:8]: Breakpoint 1 high byte value
This register is written by software to define the higher 8 address bits of breakpoint 1.
76543210
BK1[7:0]
rw rw rw rw rw rw rw rw
Bits 7:0
BK1[7:0]: Breakpoint 1 high byte value
This register is written by software to define the lower 8 address bits of breakpoint 1.