MCF5207 FREESCALE [Freescale Semiconductor, Inc], MCF5207 Datasheet - Page 24

• Manufacturer Part Number: MCF5207
• Description: Microprocessor Data Sheet
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Preliminary Electrical Characteristics
than 0.4 V during power down or there will be undesired high current in the ESD protection diodes. There
are no requirements for the fall times of the power supplies.
The recommended power down sequence is as follows:
5.5
5.6
Table 9
24
1. Drop IV
2. Drop EV
NOTES:
1
2
3
4
lists processor bus input timings.
Num
Oscillator and PLL Electrical Characteristics
External Interface Timing Characteristics
Proper PC board layout procedures must be followed to achieve specifications.
All internal registers retain data at 0 Hz.
This parameter is guaranteed by characterization before qualification rather than 100% tested.
This parameter is guaranteed by design rather than 100% tested.
11
14
1
2
3
4
5
6
All processor bus timings are synchronous; that is, input setup/hold and
output delay with respect to the rising edge of a reference clock. The
reference clock is the FB_CLK output.
All other timing relationships can be derived from these values.Timings
listed in
DD
PLL Reference Frequency Range
Core frequency
CLKOUT Frequency
Crystal Start-up Time
EXTAL Input High Voltage
EXTAL Input Low Voltage
XTAL Load Capacitance
PLL Lock Time
Duty Cycle of reference
DD
Crystal Mode
All other modes (External, Limp)
Crystal Mode
All other modes (External, Limp)
Crystal reference
External reference
/PLLV
/SDV
Table 9
DD
DD
MCF5208 ColdFire
Characteristic
supplies.
4
4
to 0 V.
2,5
are shown in
1
Table 8. PLL Electrical Characteristics
2, 3
2
2
®
Figure 14
Microprocessor Data Sheet, Rev. 0.5
Preliminary
NOTE
f
&
Symbol
ref_crystal
V
V
V
V
f
ref_ext
f
IHEXT
IHEXT
sys/2
ILEXT
ILEXT
f
t
t
t
Figure
sys
cst
lpll
dc
15.
Value
Min.
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
—
—
40
5
166.67
Value
83.33
Max.
TBD
TBD
TBD
TBD
16
16
10
30
60
1
Freescale Semiconductor
MHZ
MHz
MHz
MHz
Unit
ms
pF
%
V
V
V
V
ms