Peripheral operating requirements and behaviors
Table 13. Oscillator DC electrical specifications (continued)
Symbol Description
Min.
Typ.
Max.
Unit
Notes
RS Series resistor — low-frequency, low-power
—
—
—
kΩ
mode (HGO=0)
Series resistor — low-frequency, high-gain mode
(HGO=1)
—
—
200
—
—
—
kΩ
kΩ
Series resistor — high-frequency, low-power
mode (HGO=0)
Series resistor — high-frequency, high-gain
mode (HGO=1)
—
—
0
—
—
kΩ
V
5
Vpp
Peak-to-peak amplitude of oscillation (oscillator
mode) — low-frequency, low-power mode
(HGO=0)
0.6
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 the integrated capacitors when the low frequency oscillator (RANGE = 00) is used. For all
other cases external capacitors must be used..
4. When low power mode is selected, RF is integrated and must not be attached externally.
5. The EXTAL and XTAL pins should only be connected to required oscillator components and must not be connected to any
other devices.
6.3.2.2 Oscillator frequency specifications
Table 14. Oscillator frequency specifications
Symbol Description
fosc_lo Oscillator crystal or resonator frequency — low
frequency mode (MCG_C2[RANGE]=00)
Min.
Typ.
Max.
Unit
Notes
32
—
40
kHz
fosc_hi_1 Oscillator crystal or resonator frequency — high
frequency mode (low range)
3
8
—
—
8
MHz
MHz
(MCG_C2[RANGE]=01)
fosc_hi_2 Oscillator crystal or resonator frequency — high
frequency mode (high range)
32
(MCG_C2[RANGE]=1x)
fec_extal
tdc_extal
Input clock frequency (external clock mode)
Input clock duty cycle (external clock mode)
—
—
48
60
MHz
%
1, 2
40
50
Table continues on the next page...
KL24 Sub-Family Data Sheet Data Sheet, Rev. 3, 9/19/2012.
28
Freescale Semiconductor, Inc.
FREESCALE [ Freescale ]
