TWR-MCF51JE Freescale Semiconductor, TWR-MCF51JE Datasheet - Page 34

• Manufacturer Part Number: TWR-MCF51JE
• Description: TOWER SYSTEM BOARD MCF51JE
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®, Flexis™r
• Type: MCUr

Specifications of TWR-MCF51JE

• Contents: Board
• Data Bus Width: 32 bit
• Interface Type: RS-232, RS-485, Ethernet, CAN, USB
• Silicon Manufacturer: Freescale
• Core Architecture: Coldfire
• Core Sub-architecture: Coldfire V1
• Silicon Core Number: MCF51J
• Silicon Family Name: Flexis - MCF51JE
• Rohs Compliant: Yes
• For Use With/related Products: Freescale Tower System, MCF51JE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Preliminary Electrical Characteristics
2
3
4
5
6
7
1-3
This specification applies to any time the FLL reference source or reference divider is changed, trim value is changed, DMX32 bit is
changed, DRS bit is 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.
This specification 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 specification assumes it is already
running.
Jitter is the average deviation from the programmed frequency measured over the specified interval at maximum f
Measurements are made with the device powered by filtered supplies and clocked by a stable external clock signal. Noise injected
into the FLL circuitry via V
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.
Below D
already in lock, then the MCG may stay in lock.
Below D
#
1
2
3
4
5
Oscillator crystal or resonator
(EREFS = 1, ERCLKEN = 1)
Load capacitors
Feedback resistor
Series resistor — Low range
Series resistor — High range
lock
unl
minimum, the MCG will not exit lock if already in lock. Above D
minimum, the MCG is guaranteed to enter lock. Above D
DD
Table 18. XOSC (Temperature Range = –40 to 105
and V
SS
Characteristic
and variation in crystal oscillator frequency increase the C
Low range
(32 kHz to 38.4 kHz)
High range
(1 MHz to 16 MHz)
Low Gain (HGO = 0)
High Gain (HGO = 1)
• Low range (RANGE = 0)
• High range (RANGE = 1),
• FEE or FBE mode
• High range (RANGE = 1),
• High gain (HGO = 1),
• FBELP mode
• High range (RANGE = 1),
• Low power (HGO = 0),
• FBELP mode
• Low Gain (HGO = 0)
• High Gain (HGO = 1)
Preliminary — Subject to Change
≥ 8 MHz
4 MHz
1 MHz
2
lock
maximum, the MCG will not enter lock. But if the MCG is
unl
maximum, the MCG is guaranteed to exit lock.
Symbol
R
R
C
C
R
fhi
fhi
fhi
—
f
lo
S
S
1
2
F
°
C Ambient)
Jitter
Min
32
—
—
—
—
—
—
—
1
1
1
percentage for a given interval.
Typ
100
10
—
—
—
—
See Note
1
0
0
0
0
Freescale Semiconductor
1
BUS
.
3
Max
38.4
16
10
20
—
—
—
—
5
8
0
MHz
MHz
MHz
Unit
kHz
MΩ
kΩ
kΩ