TMS320F28030_16 Datasheet, PDF (36/160 Pages) Texas Instruments – Piccolo Microcontrollers

TMS320F28030, TMS320F28031, TMS320F28032
TMS320F28033, TMS320F28034, TMS320F28035
SPRS584K – APRIL 2009 – REVISED JUNE 2016
www.ti.com
Table 5-7. Internal Zero-Pin Oscillator (INTOSC1/INTOSC2) Characteristics
PARAMETER
Internal zero-pin oscillator 1 (INTOSC1) at 30°C⁽¹⁾⁽²⁾
Internal zero-pin oscillator 2 (INTOSC2) at 30°C⁽¹⁾⁽²⁾
Frequency
Frequency
MIN
TYP
10.000
10.000
MAX
UNIT
MHz
MHz
Step size (coarse trim)
55
kHz
Step size (fine trim)
Temperature drift⁽³⁾
Voltage (V_DD) drift⁽³⁾
14
kHz
3.03
4.85 kHz/°C
175
Hz/mV
(1) Oscillator frequency will vary over temperature, see Figure 5-9. To compensate for oscillator temperature drift, see the Oscillator
Compensation Guide and the controlSUITE™ example, Example_2803xOscComp.c.
(2) Frequency range ensured only when VREG is enabled, VREGENZ = V_SS.
(3) Output frequency of the internal oscillators follows the direction of both the temperature gradient and voltage (V_DD) gradient. For
example:
• Increase in temperature will cause the output frequency to increase per the temperature coefficient.
• Decrease in voltage (V_DD) will cause the output frequency to decrease per the voltage coefficient.
Zero-Pin Oscillator Frequency Movement With Temperature
10.6
10.5
10.4
10.3
10.2
10.1
10
9.9
9.8
9.7
9.6
–40 –30 –20 –10 0
Typical
Max
10 20 30 40 50 60 70 80 90 100 110 120
Temperature (°C)
Figure 5-9. Zero-Pin Oscillator Frequency Movement With Temperature
36
Specifications
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