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H8SX/1663 数据表(PDF) 686 Page - Renesas Technology Corp |
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H8SX/1663 数据表(HTML) 686 Page - Renesas Technology Corp |
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686 / 1158 page ![]() Section 12 8-Bit Timers (TMR) Rev.1.00 Jun. 07, 2006 Page 634 of 1102 REJ09B0294-0100 Table 12.7 Switching of Internal Clock and TCNT Operation No. Timing to Change CKS1 and CKS0 Bits TCNT Clock Operation 1 Switching from low to low* 1 Clock before switchover Clock after switchover TCNT input clock TCNT CKS bits changed N N + 1 2 Switching from low to high* 2 Clock before switchover Clock after switchover TCNT input clock TCNT CKS bits changed N N + 1 N + 2 3 Switching from high to low* 3 Clock before switchover Clock after switchover TCNT input clock TCNT CKS bits changed N N + 1 N + 2 *4 4 Switching from high to high Clock before switchover Clock after switchover TCNT input clock TCNT CKS bits changed N N + 1 N + 2 Notes: 1. Includes switching from low to stop, and from stop to low. 2. Includes switching from stop to high. 3. Includes switching from high to stop. 4. Generated because the change of the signal levels is considered as a falling edge; TCNT is incremented. |
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