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SH79F166AP/044PR bảng dữ liệu(PDF) 89 Page - SINOWEALTH Electronic Ltd |
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SH79F166AP/044PR bảng dữ liệu(HTML) 89 Page - SINOWEALTH Electronic Ltd |
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89 / 113 page  SH79F166A 89 Table 8.28 ADC Channel Configure Register 95H, Bank0 Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 ADCH CH7 CH6 CH5 CH4 CH3 CH2 CH1 CH0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Reset Value (POR/WDT/LVR/PIN) 0 0 0 0 0 0 0 0 Bit Number Bit Mnemonic Description 7-0 CH[7:0] Channel Configuration bits 0: P4.0-P4.3，P3.4-P3.7 are I/O port 1: P4.0-P4.3，P3.4-P3.7 are ADC input port Table 8.29 AD Converter Data Register (Compare Value Register) 96H, Bank0 Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 ADDL - - - - - - A1 A0 R/W - - - - - - R/W R/W Reset Value (POR/WDT/LVR/PIN) - - - - - - 0 0 97H, Bank0 Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 ADDH A9 A8 A7 A6 A5 A4 A3 A2 R/W R/W R/W R/W R/W R/W R/W R/W R/W Reset Value (POR/WDT/LVR/PIN) 0 0 0 0 0 0 0 0 Bit Number Bit Mnemonic Description 1-0 7-0 A9-A0 ADC Data register Digital Value of sampled analog voltage, updated when conversion is completed If ADC Compare function is enabled (EC = 1), this is the value to be compared with the analog input The Approach for AD Conversion: (1) Select the analog input channels and reference voltage. (2) Enable the ADC module with the selected analog channel. (3) Set GO/DONE ———— = 1 to start the AD conversion. (4) Wait until GO/DONE ———— = 0 or ADCIF = 1, if the ADC interrupt is enabled, the ADC interrupt will occur. (5) Acquire the converted data from ADDH/ADDL. (6) Repeat step 3-5 if another conversion is required. The Approach for Digital Compare Function: (1) Select the analog input channels and reference voltage. (2) Set ADDH/ADDL to the compare value. (3) Set EC = 1 to enable compare function. (4) Enable the ADC module with the selected analog channel. (5) Set GO/DONE ———— = 1 to start the compare function. (6) If the analog input is lager than compare value set in ADDH/ADDL, the ADCIF will be set to 1. if the ADC interrupt is enabled, the ADC interrupt will occur. (7) The compare function will continue work until the GO/DONE ———— bit is cleared to 0. |
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