Appendix A Electrical Characteristics
MC9S08DV60 Series Data Sheet, Rev 2
376
Freescale Semiconductor
20
D Lock time - FLL
tl_lock
——
tl_acquire+
1075(1/fint_t)
s
21
D Lock time - PLL
tpll_lock
——
tpll_acquire+
1075(1/fpll_ref)
s
22
D
Loss of external clock minimum frequency - RANGE =
0
floc_low
(3/5) x fint
—
kHz
23
D
Loss of external clock minimum frequency - RANGE =
1
floc_high
(16/5) x fint
—
kHz
1 TRIM register at default value (0x80) and FTRIM control bit at default value (0x0).
2 This specication applies to any time the FLL reference source or reference divider is changed, trim value 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
specication assumes it is already running.
3 This specication applies to any time the PLL VCO divider or reference divider is changed, or changing from PLL disabled (BLPE,
BLPI) to PLL enabled (PBE, PEE). If a crystal/resonator is being used as the reference, this specication assumes it is already
running.
4 Jitter is the average deviation from the programmed frequency measured over the specied interval at maximum f
BUS.
Measurements are made with the device powered by ltered supplies and clocked by a stable external clock signal. Noise injected
into the FLL circuitry via VDD and VSS and variation in crystal oscillator frequency increase the CJitter percentage for a given
interval.
5 Jitter measurements are based upon a 48 MHz MCGOUT clock frequency.
6 625 ns represents 5 time quanta for CAN applications, under worst case conditions of 8 MHz CAN bus clock, 1 Mbps CAN bus
speed, and 8 time quanta per bit for bit time settings. 5 time quanta is the minimum time between a synchronization edge and the
sample point of a bit using 8 time quanta per bit.
7 Below D
lock minimum, the MCG is guaranteed to enter lock. Above Dlock maximum, the MCG will not enter lock. But if the MCG
is already in lock, then the MCG may stay in lock.
8 Below D
unl minimum, the MCG will not exit lock if already in lock. Above Dunl maximum, the MCG is guaranteed to exit lock.
Table A-12. MCG Frequency Specications (Temperature Range = –40 to 125
°C Ambient) (continued)
Num
C
Rating
Symbol
Min
Typical
Max
Unit