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UPD178024GC Datasheet(PDF) 5 Page - NEC |
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UPD178024GC Datasheet(HTML) 5 Page - NEC |
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5 / 56 page  5 µPD178023, 178024 Data Sheet U14126EJ1V0DS00 (2/2) Item µPD178023 µPD178024 Frequency counter Frequency measurement • AMIFC pin: For 450-kHz counting • FMIFC pin: For 450-kHz/10.7-MHz counting Reset • Reset by RESET pin • Internal reset by watchdog timer • Reset by power-ON clear circuit • Detection of less than 4.5 VNote (Reset does not occur, however.) • Detection of less than 3.5 VNote (during CPU operation) • Detection of less than 2.3 VNote (in STOP mode) Supply voltage • VDD = 4.5 to 5.5 V (during CPU, PLL operation) •VDD = 3.5 to 5.5 V (during CPU operation) Package • 80-pin plastic QFP (14 × 20 mm, 0.8-mm pitch) • 80-pin plastic QFP (14 × 14 mm, 0.65-mm pitch) Note These voltages are the maximum values. In practice, the chip may be reset at voltages lower than these. |
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