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PM0215 bảng dữ liệu(PDF) 60 Page - STMicroelectronics

tên linh kiện PM0215
Giải thích chi tiết về linh kiện  STM32F0xxx Cortex-M0 programming manual
PDF  91 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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PM0215 bảng dữ liệu(HTML) 60 Page - STMicroelectronics

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The STM32 Cortex-M0 instruction set
PM0215
60/91
Doc ID 022979 Rev 1
Restrictions
The restrictions are:
●
Do not use SP or PC in the BX or BLX instruction
●
For BX and BLX, bit[0] of Rm must be 1 for correct execution. Bit[0] is used to update
the EPSR T-bit and is discarded from the target address.
Bcond is the only conditional instruction on the Cortex-M0 processor.
Condition flags
These instructions do not change the flags.
Examples
B
loopA
; Branch to loopA
BL
funC
; Branch with link (Call) to function funC, return address
; stored in LR
BX
LR
; Return from function call
BLX
R0
; Branch with link and exchange (Call) to a address stored
; in R0
BEQ
labelD
; Conditionally branch to labelD if last flag setting
; instruction set the Z flag, else do not branch.
BL label
−16 MB to +16 MB
BX Rm
Any value in register
BLX Rm
Any value in register
Table 22.
Branch ranges (continued)
Instruction
Branch range



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