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PM0223 Scheda tecnica(PDF) 49 Page - STMicroelectronics

Il numero della parte PM0223
Spiegazioni elettronici  This programming manual provides information for application and system-level software developers
PDF  110 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM0223 Scheda tecnica(HTML) 49 Page - STMicroelectronics

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PM0223
The STM32L0 Cortex-M0+ Instruction Set
80
3.4.4
LDR, PC-relative
Load register (literal) from memory.
Syntax
LDR Rt, label
where:
Operation
Loads the register specified by Rt from the word in memory specified by label.
Restrictions
In these instructions, label must be within 1020 bytes of the current PC and word aligned.
Condition flags
These instructions do not change the flags.
Examples
LDR
R0, LookUpTable
; Load R0 with a word of data from an address
; labelled as LookUpTable.
LDR
R3, [PC, #100]
; Load R3 with memory word at (PC + 100).
Rt
Is the register to load
label
Is a PC-relative expression. See 3.3.5: PC-relative expressions on page 42.



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