MCF51JU128VHS FREESCALE [Freescale Semiconductor, Inc], MCF51JU128VHS Datasheet - Page 25

• Manufacturer Part Number: MCF51JU128VHS
• Description: MCF51JU128
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

1. V
2. See crystal or resonator manufacturer's recommendation
3. C
4. When low power mode is selected, R
5. The EXTAL and XTAL pins should only be connected to required oscillator components and must not be connected to any
6.3.2.2 Oscillator frequency specifications
1. Other frequency limits may apply when external clock is being used as a reference for the FLL or PLL.
2. When transitioning from FBE to FEI mode, restrict the frequency of the input clock so that, when it is divided by FRDIV, it
Freescale Semiconductor, Inc.
Symbol
Symbol
f
f
f
t
osc_hi_1
osc_hi_2
ec_extal
dc_extal
f
other devices.
remains within the limits of the DCO input clock frequency.
V
osc_lo
t
DD
x
pp
cst
,C
5
=3.3 V, Temperature =25 °C
y
can be provided by using either the integrated capacitors or by using external components.
Peak-to-peak amplitude of oscillation (oscillator
mode) — low-frequency, low-power mode
(HGO=0)
Peak-to-peak amplitude of oscillation (oscillator
mode) — low-frequency, high-gain mode
(HGO=1)
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)
Oscillator crystal or resonator frequency — low
frequency mode (MCG_C2[RANGE]=00)
Oscillator crystal or resonator frequency — high
frequency mode (low range)
(MCG_C2[RANGE]=01)
Oscillator crystal or resonator frequency — high
frequency mode (high range)
(MCG_C2[RANGE]=1x)
Input clock frequency (external clock mode)
Input clock duty cycle (external clock mode)
Crystal startup time — 32 kHz low-frequency,
low-power mode (HGO=0)
Crystal startup time — 32 kHz low-frequency,
high-gain mode (HGO=1)
Crystal startup time — 8 MHz high-frequency
(MCG_C2[RANGE]=01), low-power mode
(HGO=0)
Crystal startup time — 8 MHz high-frequency
(MCG_C2[RANGE]=01), high-gain mode
(HGO=1)
Description
Description
Table 15. Oscillator DC electrical specifications (continued)
MCF51JU128 Advance Information Data Sheet, Rev. 1, 08/2011.
Table 16. Oscillator frequency specifications
F
is integrated and must not be attached externally.
Preliminary
Min.
Min.
32
40
—
—
—
—
—
—
—
—
—
1
8
Typ.
Typ.
V
V
750
250
0.6
0.6
0.6
50
—
—
—
—
1
DD
DD
Max.
Max.
40
32
50
60
—
—
—
—
—
—
—
—
8
MHz
MHz
MHz
Unit
Unit
kHz
ms
ms
ms
ms
%
V
V
V
V
Clock modules
Notes
Notes
1,
3,
2
4
25