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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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UPSD3422 Fiches technique(PDF) 51 Page - STMicroelectronics |
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UPSD3422 Fiches technique(HTML) 51 Page - STMicroelectronics |
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51 / 300 page  Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) UPSD3422, UPSD3433, UPSD3434, UPSD3454 8032 addressing modes 51/300 9.11 Bit addressing This mode allows setting or clearing an individual bit without disturbing the other bits within an 8-bit value of internal SRAM. Bit Addressing is only available for certain locations in 8032 DATA and SFR memory. Valid locations are DATA addresses 20h - 2Fh and for SFR addresses whose base address ends with 0h or 8h. (Example: The SFR, IE, has a base address of A8h, so each of the eight bits in IE can be addressed individually at address A8h, A9h, ...up to AFh.) For example: SETB AFh ; Set the individual EA bit (Enable All ; Interrupts) inside the SFR register, ; IE. Obsolete Product(s) - Obsolete Product(s) |
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