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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CC1010-RTR1 датащи(PDF) 65 Page - Texas Instruments |
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CC1010-RTR1 датащи(HTML) 65 Page - Texas Instruments |
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65 / 152 page  CC1010 SWRS047 Page 65 of 152 while (WDT & 0x08) { WDT |= 0x10; // Set WDTSE WDT &= ~0x08; // Clear WDTEN } 16.5.2 Enabling the Watchdog Timer Enabling the Watchdog Timer is simply done by setting WDT.WDTEN. Using the WDT.WDTSE control bit is not required. 16.6 Real-time Clock The real-time clock can generate interrupts with intervals ranging from 1 to 127 seconds. It is connected to the 32.768 kHz crystal oscillator, which is disabled after reset. It must be enabled as described in the section on page 33. An external 32.768 kHz clock signal can also be applied, as described. The interrupt interval is programmed in the range from 1 through 127 seconds by setting RTCON.RT(6:0). The timer is enabled by setting RTCON.RTEN. The first interrupt will be generated RT seconds after RTEN is set. The real-time clock interrupt must be enabled as described in the Interrupts section on page 28. The RTC oscillator circuit is shown in Figure 15. The loading capacitors values can be calculated as described for the main crystal oscillator at page 32. RTCON (0xED) – Real-time Clock Control Register Bit Name R/W Reset value Description 7 RTEN R/W 0 Real-time Clock Enable / Disable 0 : Real-time Clock is disabled 1 : Real-time Clock is enabled 6:0 RT(6:0) R/W 0x00 Real-time Clock interrupt interval control. RT(6:0) gives the desired interrupt interval in seconds. RT(6:0) must be between 1 and 127. C13 C12 XTAL 32.768 kHz XTAL 32.768 kHz XOSC32_Q1 XOSC32_Q2 Figure 15. RTC oscillator circuit |
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