25

µPC1862

CAUTION AT DESIGNING

Resonators

NEC evaluates

µPC1862 using resonators which are shown below in design and development process.

If the different product is used as a resonator, electrical specification value described in this document is not assured.

And when connecting resonator to external circuit, there is need to consider temperature specification, voltage

fluctuation and product variation. In this case, normal operation is not assured in the application circuit including the

different product.

Use the resonators which are shown below when you design circuit.

32 fH VCO resonator X1

: in application example circuit

X1

(PAL)

: CSB500F2 (MURATA)

(NTSC) : CSB503F2 (MURATA)

nfSC VCO resonator X2

X2

: HC-49/U (KINSEKI,

µPC1860 adoption)

Reference data of 4fSC, 8fSC VCO resonator (KINSEKI)

Item

NTSC for 4fSC

NTSC for 8fSC

PAL for 4fSC

Name

HC-49/U

Frequency

14.31818 MHz

28.63636 MHz

17.34475 MHz

Overtone Order

Fundamental (AT cut)

Fundamental (BT cut)

Fundamental (AT cut)

Operating Temperature

–10 to +70

°C

Frequency Permitted

±30 × 10–6

±50 × 10–6

±30 × 10–6

Tolerance (25

±5°C)

Frequency Temperature

±30 × 10–6

±100 × 10–6

±30 × 10–6

Specification (to 25

°C)

Equivalent Serial Resistance

50

Ω or less

Parallel Capacitance

7.0 pF or less

3rd harmonic standard

3rd harmonic frequency is over

–

3rd harmonic frequency is over

3fO (42.95454 MHz) + 7.5 kHz

3fO (53.203425 MHz) + 7.5 kHz