K20P48M50SF0 Datasheet, PDF (28/60 Pages) Freescale Semiconductor, Inc – K20 Sub-Family

Peripheral operating requirements and behaviors
Table 14. Oscillator DC electrical specifications (continued)
Symbol
I_DDOSC
Description
Supply current — high gain mode (HGO=1)
• 32 kHz
• 4 MHz
• 8 MHz (RANGE=01)
• 16 MHz
• 24 MHz
• 32 MHz
Min.
Typ.
Max.
Unit
—
25
—
μA
—
400
—
μA
—
500
—
μA
—
2.5
—
mA
—
3
—
mA
—
4
—
mA
C_x
EXTAL load capacitance
—
—
—
C_y
XTAL load capacitance
—
—
—
R_F
Feedback resistor — low-frequency, low-power
—
—
—
MΩ
mode (HGO=0)
Feedback resistor — low-frequency, high-gain
—
10
—
MΩ
mode (HGO=1)
Feedback resistor — high-frequency, low-power
—
—
—
MΩ
mode (HGO=0)
Feedback resistor — high-frequency, high-gain
—
1
—
MΩ
mode (HGO=1)
R_S
Series resistor — low-frequency, low-power
mode (HGO=0)
—
—
—
kΩ
Series resistor — low-frequency, high-gain mode
—
200
—
kΩ
(HGO=1)
Series resistor — high-frequency, low-power
—
—
—
kΩ
mode (HGO=0)
Series resistor — high-frequency, high-gain
mode (HGO=1)
—
0
—
kΩ
V_pp5 ^{Peak-to-peak amplitude of oscillation (oscillator}
—
0.6
—
V
mode) — low-frequency, low-power mode
(HGO=0)
Peak-to-peak amplitude of oscillation (oscillator
—
V_DD
—
V
mode) — low-frequency, high-gain mode
(HGO=1)
Peak-to-peak amplitude of oscillation (oscillator
—
0.6
—
V
mode) — high-frequency, low-power mode
(HGO=0)
Peak-to-peak amplitude of oscillation (oscillator
—
V_DD
—
V
mode) — high-frequency, high-gain mode
(HGO=1)
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.
Notes
1
2, 3
2, 3
2, 4
K20 Sub-Family Data Sheet, Rev. 4 5/2012.
28
Freescale Semiconductor, Inc.