Information
Table 14. Oscillator DC electrical specifications (continued)
Symbol Description Min. Typ. Max. Unit Notes
I
DDOSC
Supply current — high gain mode (HGO=1)
• 32 kHz
• 4 MHz
• 8 MHz (RANGE=01)
• 16 MHz
• 24 MHz
• 32 MHz
—
—
—
—
—
—
25
400
500
2.5
3
4
—
—
—
—
—
—
μA
μA
μA
mA
mA
mA
1
C
x
EXTAL load capacitance — — — 2, 3
C
y
XTAL load capacitance — — — 2, 3
R
F
Feedback resistor — low-frequency, low-power
mode (HGO=0)
— — — MΩ 2, 4
Feedback resistor — low-frequency, high-gain
mode (HGO=1)
— 10 — MΩ
Feedback resistor — high-frequency, low-power
mode (HGO=0)
— — — MΩ
Feedback resistor — high-frequency, high-gain
mode (HGO=1)
— 1 — MΩ
R
S
Series resistor — low-frequency, low-power
mode (HGO=0)
— — — kΩ
Series resistor — low-frequency, high-gain mode
(HGO=1)
— 200 — kΩ
Series resistor — high-frequency, low-power
mode (HGO=0)
— — — kΩ
Series resistor — high-frequency, high-gain
mode (HGO=1)
—
0
—
kΩ
V
pp
5
Peak-to-peak amplitude of oscillation (oscillator
mode) — low-frequency, low-power mode
(HGO=0)
— 0.6 — V
Peak-to-peak amplitude of oscillation (oscillator
mode) — low-frequency, high-gain mode
(HGO=1)
— V
DD
— V
Peak-to-peak amplitude of oscillation (oscillator
mode) — high-frequency, low-power mode
(HGO=0)
— 0.6 — V
Peak-to-peak amplitude of oscillation (oscillator
mode) — high-frequency, high-gain mode
(HGO=1)
— V
DD
— V
1. V
DD
=3.3 V, Temperature =25 °C
2. See crystal or resonator manufacturer's recommendation
3. C
x
,C
y
can be provided by using either the integrated capacitors or by using external components.
4. When low power mode is selected, R
F
is integrated and must not be attached externally.
Peripheral operating requirements and behaviors
K20 Sub-Family Data Sheet, Rev. 4 5/2012.
28 Freescale Semiconductor, Inc.