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PM0044 数据表(PDF) 11 Page - STMicroelectronics |
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PM0044 数据表(HTML) 11 Page - STMicroelectronics |
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11 / 162 page  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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