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HT68F20 데이터시트(PDF) 167 Page - Holtek Semiconductor Inc |
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HT68F20 데이터시트(HTML) 167 Page - Holtek Semiconductor Inc |
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167 / 210 page ![]() HT68F20/HT68F30/HT68F40/HT68F50/HT68F60 Rev. 1.00 167 November 3, 2009 ¨ HT68F30/HT68F40/HT68F50/HT68F60 Bit 76543210 Name D7 ISEL1 ISEL0 SCOMEN COM3EN COM2EN COM1EN COM0EN R/W R/W R/W R/W R/W R/W R/W R/W R/W POR 00000000 Bit 7 Reserved Bit 0: Correct level - bit must be reset to zero for correct operation 1: Unpredictable operation - bit must not be set high Bit 6~5 ISEL1, ISEL0: Select SCOM typical bias current (VDD=5V) 00: 25 mA 01: 50 mA 10: 100 mA 11: 200 mA Bit 4 SCOMEN: SCOM module control 0: disable 1: enable Bit 3 COM3EN: PC7 or SCOM3 selection 0: GPIO 1: SCOM3 Bit 2 COM2EN: PC6 or SCOM2 selection 0: GPIO 1: SCOM2 Bit 1 COM1EN: PC1 or SCOM1 selection 0: GPIO 1: SCOM1 Bit 0 COM0EN: PC0 or SCOM0 selection 0: GPIO 1: SCOM0 |
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