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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT85F2240 датащи(PDF) 49 Page - Holtek Semiconductor Inc |
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HT85F2240 датащи(HTML) 49 Page - Holtek Semiconductor Inc |
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49 / 147 page  Rev. 1.10 49 of 147 ���� �1� �01� A/D Flash 8051 Core Low Pin Count MCU HT85F2230/HT85F2240 DPC Register – Data Pointer Control Register SFR Address: 93h Bit 7 6 5 4 3 2 1 0 Name — — — — DPC� DPC� DPC1 DPC0 R/W — — — — R/W R/W R/W R/W POR — — — — 0 0 0 0 Bit 7~4 Unimplemented, read as “0” Bit 3 DPC3: Next Data Pointer select The content of this bit will be loaded to the “DPS” register after each MOVX @DPTR instruction is executed. Note that this feature is always enabled, therefore for each of the “DPC” registers this field has to contain a different value pointing to itself, the auto-switching does not occur with default (reset) values. Bit 2 DPC2: Auto-modification size 0: Modified size by 1 1: Modified size by 2 The current DPTR will be automatically modified by size, selected by the DPC2 bit, after each MOVX @DPTR instruction when DPC0=1. Bit 1 DPC1: The current DPTR Auto-modification direction 0: Automatically incremented 1: Automatically decremented The current DPTR will be automatically decremented or incremented, selected by the DPC1 bit, after each MOVX @DPTR instruction when DPC0=1. Bit 0 DPC0: Auto-modification control bit 0: Disable 1: Enable When this bit is set to high, enables auto-modification of the current DPTR after each MOVX @DPTR instruction. |
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