MCF51JU128VHS FREESCALE [Freescale Semiconductor, Inc], MCF51JU128VHS Datasheet - Page 24

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

Clock modules
1. This parameter is measured with the internal reference (slow clock) being used as a reference to the FLL (FEI clock
2. These typical values listed are with the slow internal reference clock (FEI) using factory trim and DMX32=0.
3. The resulting system clock frequencies should not exceed their maximum specified values. The DCO frequency deviation
4. These typical values listed are with the slow internal reference clock (FEI) using factory trim and DMX32=1.
5. The resulting clock frequency must not exceed the maximum specified clock frequency of the device.
6. This specification applies to any time the FLL reference source or reference divider is changed, trim value is changed,
7. Excludes any oscillator currents that are also consuming power while PLL is in operation.
8. This specification was obtained using a Freescale developed PCB. PLL jitter is dependent on the noise characteristics of
9. This specification applies to any time the PLL VCO divider or reference divider is changed, or changing from PLL disabled
6.3.2 Oscillator electrical specifications
This section provides the electrical characteristics of the module.
6.3.2.1 Oscillator DC electrical specifications
24
Symbol
Symbol
I
t
DDOSC
pll_lock
mode).
(Δf
DMX32 bit is changed, DRS bits are changed, or changing from FLL disabled (BLPE, BLPI) to FLL enabled (FEI, FEE,
FBE, FBI). If a crystal/resonator is being used as the reference, this specification assumes it is already running.
each PCB and results will vary.
(BLPE, BLPI) to PLL enabled (PBE, PEE). If a crystal/resonator is being used as the reference, this specification assumes
it is already running.
D
D
V
lock
DD
unl
dco_t
) over voltage and temperature should be considered.
Lock entry frequency tolerance
Lock exit frequency tolerance
Lock detector detection time
Supply voltage
Supply current — low-power mode (HGO=0)
Description
Description
• 32 kHz
• 1 MHz
• 4 MHz
• 8 MHz (RANGE=01)
• 16 MHz
• 24 MHz
• 32 MHz
Table 14. Oscillator DC electrical specifications
Table 13. MCG specifications (continued)
MCF51JU128 Data Sheet, Rev. 4, 01/2012.
Table continues on the next page...
± 1.49
± 4.47
1.71
Min.
Min.
—
—
—
—
—
—
—
—
Typ.
Typ.
500
200
200
300
950
1.2
1.5
—
—
—
—
150 × 10
+ 1075(1/
± 2.98
± 5.97
f
Max.
pll_ref
Max.
3.6
—
—
—
—
—
—
—
Freescale Semiconductor, Inc.
)
-6
Unit
Unit
mA
mA
μA
μA
μA
μA
nA
%
%
V
s
Notes
Notes
9
1