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PM0044 Folha de dados(PDF) 11 Page - STMicroelectronics

Nome de Peças PM0044
Descrição Electrónicos  STM8 CPU programming manual
PDF  162 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM0044 Folha de dados(HTML) 11 Page - STMicroelectronics

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PM0044
STM8 architecture
Doc ID 13590 Rev 3
11/162
1.2
Enhanced STM8 features
●
16-Mbyte linear program memory space with 3 FAR instructions (CALLF, RETF, JPF)
●
16-Mbyte linear data memory space with 1 FAR instruction (LDF)
●
Up to 32 24-bit interrupt vectors with optimized context save management
●
16-bit Stack Pointer (SP=SH:S) with stack manipulation instructions and addressing
modes
●
New register and memory access instructions (EXG, MOV)
●
New arithmetic instructions: DIV 16/8 and DIVW 16/16
●
New bit handling instructions (CCF, BCPL, BCCM)
●
2 x 16-bit index registers (X=XH:XL, Y=YH:YL). 8-bit data transfers address the low
byte. The high-byte is not affected, with a reset value of 0. This allows the use of X/Y as
8-bit values.
●
Fast interrupt handling through alternate register files (up to 4 contexts) with standard
stack compatible mode (for real time OS kernels)
●
16-bit/8-bit stack operations (X, Y, A, CC stacking)
●
16-bit pointer direct update with 16-bit relative offset (ADDW/SUBW for X/Y/SP)
●
8-bit & 16-bit arithmetic and signed arithmetic support



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