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