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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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H838532H датащи(PDF) 72 Page - Renesas Technology Corp |
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H838532H датащи(HTML) 72 Page - Renesas Technology Corp |
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72 / 508 page  Section 2 CPU Rev. 1.00 May 30, 2008 Page 52 of 484 REJ09B0436-0100 The timer is counting, so the value read is not necessarily the same as the value in the timer load register. As a result, bits other than the intended bit in the timer counter may be modified and the modified value may be written to the timer load register. Read Write Count clock Timer counter Timer load register Reload Internal data bus Figure 2.13 Example of Timer Configuration with Two Registers Allocated to Same Address Example 2: When the BSET instruction is executed for port 5 P57 and P56 are input pins, with a low-level signal input at P57 and a high-level signal input at P56. P55 to P50 are output pins and output low-level signals. An example to output a high-level signal at P50 with a BSET instruction is shown below. • Prior to executing BSET instruction P57 P56 P55 P54 P53 P52 P51 P50 Input/output Input Input Output Output Output Output Output Output Pin state Low level High level Low level Low level Low level Low level Low level Low level PCR5 0 0 1 1 1 1 1 1 PDR5 1 0 0 0 0 0 0 0 • BSET instruction executed BSET #0, @PDR5 The BSET instruction is executed for port 5. |
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