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IA88C00-PDW48C-R 数据表(PDF) 29 Page - InnovASIC, Inc |
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IA88C00-PDW48C-R 数据表(HTML) 29 Page - InnovASIC, Inc |
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29 / 80 page ![]() IA88C00 Data Sheet Microcontroller As of Production Version -01 Copyright © 2005 ENG 21 0 050519-00 www.Innovasic Innovasic.com Innovasic Semiconductor Page 29 of 80 1.888.824.4184 Figure 23. Counter 0 Capture Register (High Byte) (C0CH), R226 Bank 0 Bit 7 6 5 4 3 2 1 0 D7 D6 D5 D4 D3 D2 D1 D0 Initial Value X X X X X X X X Read/Write R/W R/W R/W R/W R/W R/W R/W R/W This 16-bit register pair is used to hold the counter value saved when using the "capture on external event" function. This register will capture at the rising edge of the I/O pin or when software capture is asserted. When the bi-value mode of operation is enabled, this register is used as a second Time Constant register and the counter is alternately loaded from each. Figure 24. Counter 0 Capture Register (Low Byte) (C0CL), R227 Bank 0 Bit 7 6 5 4 3 2 1 0 D7 D6 D5 D4 D3 D2 D1 D0 Initial Value X X X X X X X X Read/Write R/W R/W R/W R/W R/W R/W R/W R/W This 16-bit register pair is used to hold the counter value saved when using the "capture on external event" function. This register will capture at the rising edge of the I/O pin or when software capture is asserted. When the bi-value mode of operation is enabled, this register is used as a second Time Constant register and the counter is alternately loaded from each. Figure 25. Counter 1 Time Constant Register (High Byte) (C1CTH), R228 Bank 1 Bit 7 6 5 4 3 2 1 0 D7 D6 D5 D4 D3 D2 D1 D0 Initial Value X X X X X X X X Read/Write R/W R/W R/W R/W R/W R/W R/W R/W This 16-bit register pair holds the value that is automatically loaded into the counter/timer (1) when the counter/timer is enabled, (2) when the count reaches zero in continuous mode or (3) when the trigger is asserted in re-trigger mode. If capture on both edges is enabled, this register captures the contents of the counter on the falling edge of the I/O pin. |
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