LC651154N datasheet(36/39 Pages) SANYO

36 / 39 page

No. 6278-36/39

LC651154N, 651154F, 651154L, 651152N, 651152F, 651152L

RC Oscillator Characteristics for the LC651154L and LC651152L

Figure 9 shows the RC oscillator characteristics for the LC651154L and LC651152L.

However, the sample-to-sample variation in the LC651154L and LC651152L RC oscillator frequency described below

does occur.

1) When:

VDD = 2.2 to 6.0 V, Ta = –40 to +85°C

External constants: Cext = 270 pF

Rext = 12.0 k

Ω

fMOSC will be:

290 kHz

≤ f

MOSC ≤ 841 kHz

Therefore, only the above circuit constants are recommended.

If use of circuit constants other than the above is unavoidable, they must be in the following ranges.

Cext = 150 to 390 pF

Rext = 3 to 20 k

Ω

(See figure 9.)

Note 8. The oscillator frequency must be in the range 350 to 850 kHz when VDD = 5.0 V and Ta = 25°C.

Note 9. Applications must be designed to have adequate margins so that the oscillator frequency falls in the operating

clock frequency range (see the oscillator divider option table) for the voltage range VDD = 2.2 to 6.0 V and for

the temperature range Ta = –40 to 85°C.

Figure 9 RC Oscillator Frequency Data (Representative Values)

These characteristics curves are for

reference purposes only and are not

guaranteed.

LC651154N Datasheet(PDF) 36 Page - Sanyo Semicon Device