TMS320F28069MPZPQ datasheet(38/204 Pages) TI2

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7.13.1.3 Internal Zero-Pin Oscillator (INTOSC1/INTOSC2) Characteristics

PARAMETER

MIN

TYP

MAX

UNIT

Internal zero-pin oscillator 1 (INTOSC1) at 30°C(1) (2)

Frequency

10.000

MHz

Internal zero-pin oscillator 2 (INTOSC2) at 30°C(1) (2)

Frequency

10.000

MHz

Step size (coarse trim)

kHz

Step size (fine trim)

kHz

Temperature drift(3)

3.03

4.85

kHz/°C

Voltage (VDD) drift(3)

175

Hz/mV

(1)

Oscillator frequency will vary over temperature, see Figure 7-8. To compensate for oscillator temperature drift, see the Oscillator

Compensation Guide and C2000Ware. .

(2)

Frequency range ensured only when VREG is enabled, VREGENZ = VSS.

(3)

Output frequency of the internal oscillators follows the direction of both the temperature gradient and voltage (VDD) gradient. For

example:

•

Increase in temperature will cause the output frequency to increase per the temperature coefficient.

•

Decrease in voltage (VDD) will cause the output frequency to decrease per the voltage coefficient.

9.6

9.7

9.8

9.9

10.1

10.2

10.3

10.4

10.5

10.6

–40

–30

–20

–10

100

110

120

Temperature (°C)

Typical

Max

Figure 7-8. Zero-Pin Oscillator Frequency Movement With Temperature

TMS320F28069, TMS320F28069M, TMS320F28069F, TMS320F28068M, TMS320F28068F

TMS320F28067, TMS320F28066, TMS320F28065, TMS320F28064, TMS320F28063

TMS320F28062, TMS320F28062F

SPRS698J – NOVEMBER 2010 – REVISED SEPTEMBER 2021

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