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UPD70F3201 Datasheet(PDF) 40 Page - NEC |
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UPD70F3201 Datasheet(HTML) 40 Page - NEC |
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40 / 98 page  Preliminary Product Information U15436EJ1V0PM 40 µµµµPD703201, 703201Y, 703204, 703204Y, 70F3201, 70F3201Y, 70F3204, 70F3204Y 10. REAL-TIME COUNTER FUNCTION The real-time counter function has the following features. Includes counters of weeks, days, hours, minutes, and seconds, and can count up to 4,095 weeks. Counters of weeks, days, hours, minutes, and seconds can be read during operation and while operation is stopped. Week counter overflow interrupt request occurrence (INTROV) Interval interrupt request occurrence (INTRTC) at a fixed interval (can be selected from the following) 0.015625 seconds, 0.03125 seconds, 0.0625 seconds, 0.125 seconds, 0.25 seconds, 0.5 seconds, 1 second, 1 minute, 1 hour, 1 day When subclock (fXT) is selected, operable only with power supply to VDDBU. The following figure shows the configuration of the real-time counter function. Count enable/ disable circuit Subcounter (15 bits) Second counter (6 bits) Internal bus Second counter write buffer Minute counter write buffer Hour counter write buffer Day counter write buffer Week counter write buffer Minute counter (6 bits) Hour counter (5 bits) Day counter (3 bits) Week counter (12 bits) INTROV INTRTC 1 second 0.015625 seconds/0.03125 seconds/0.0625 seconds/0.125 seconds/ 0.25 seconds/0.5 seconds 1 minute 1 hour 1 day Count clock = 32.768 kHz fXT fX/26 to fX/29 Remark fX: Main clock frequency fXT: Subclock frequency |
Similar Part No. - UPD70F3201 |
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Similar Description - UPD70F3201 |
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