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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMP93CS44 датащи(PDF) 20 Page - Toshiba Semiconductor |
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TMP93CS44 датащи(HTML) 20 Page - Toshiba Semiconductor |
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20 / 224 page  TMP93CS44/S45 2004-02-10 93CS44-18 (1) Switching from NORMAL to SLOW mode When the resonator is connected to X1, X2, or XT1, XT2 pin, the warm-up timer is used to change the operation frequency after getting stabilized oscillation. The warm-up time can be selected by WDMOD<WARM>. This starting and ending of warm-up timer are performed like the following example 1, 2 by program. Note 1: The warm-up timer is also used as a watchdog timer. So, when it is used as a warm-up timer, the watchdog timer must be disabled. Note 2: The case of using oscillator (Not resonator) with stabilized oscillation, a warm-up timer is not need. Note 3: The warm-up timer is operated by a oscillation clock. Therefore, warm-up time has an error. Table 3.3.2 Warm-up Time Warm-up Time WDMOD<WARM> Change to NORMAL Change to SLOW 0 (2 14/frequency) 0.8192 (ms) 500 (ms) 1 (216/frequency) 3.2768 (ms) 2000 (ms) at fc = 20 MHz, fs = 32.768 kHz |
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