µPD178023, 178024
(2/2)
Item
Frequency counter
µPD178023
µPD178024
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
Package
• VDD = 4.5 to 5.5 V (during CPU, PLL operation)
• VDD = 3.5 to 5.5 V (during CPU operation)
• 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.
Data Sheet U14126EJ1V0DS00
5
NEC [ NEC ]
