M5271EVB Freescale Semiconductor, M5271EVB Datasheet - Page 20

• Manufacturer Part Number: M5271EVB
• Description: BOARD EVAL FOR MCF5270/71
• Manufacturer: Freescale Semiconductor

Specifications of M5271EVB

• Processor To Be Evaluated: MCF5271
• Interface Type: RS-232, Ethernet
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Electrical Characteristics
7.4
20
1
2
3
4
5
6
7
8
Load Capacitance
Core Operating Supply Current
Pad Operating Supply Current
DC Injection Current
Low drive strength
High drive strength
Master Mode
Master Mode
Low Power Modes
Single Pin Limit
Total processor Limit, Includes sum of all stressed pins
Refer to Table 10 for additional PLL specifications.
Refer to the MCF5271 signals section for pins having weak internal pull-up devices.
This parameter is characterized before qualification rather than 100% tested.
pF load ratings are based on DC loading and are provided as an indication of driver strength. High speed interfaces require
transmission line analysis to determine proper drive strength and termination. See High Speed Signal Propagation:
Advanced Black Magic by Howard W. Johnson for design guidelines.
Current measured at maximum system clock frequency, all modules active, and default drive strength with matching load.
All functional non-supply pins are internally clamped to V
Input must be current limited to the value specified. To determine the value of the required current-limiting resistor, calculate
resistance values for positive and negative clamp voltages, then use the larger of the two values.
Power supply must maintain regulation within operating V
conditions. If positive injection current (V
result in external power supply going out of regulation. Insure external V
injection current. This will be the greatest risk when the processor is not consuming power. Examples are: if no system
clock is present, or if clock rate is very low which would reduce overall power consumption. Also, at power-up, system clock
is not present during the power-up sequence until the PLL has attained lock.
V
NEGCLAMP
Num
Oscillator and PLLMRFM Electrical Characteristics
1
2
3
4
5
=V
4
SS
PLL Reference Frequency Range
Core frequency
CLKOUT Frequency
Loss of Reference Frequency
Self Clocked Mode Frequency
Crystal Start-up Time
– 0.3 V, V
External reference
On-Chip PLL Frequency
3, 6, 7, 8
Crystal reference
External reference
1:1 mode (NOTE: f
Characteristic
MCF5271 Integrated Microprocessor Hardware Specification, Rev. 4
POSCLAMP
5
Table 10. HiP7 PLLMRFM Electrical Specifications
Characteristic
Table 9. DC Electrical Specifications
2
sys/2
5, 6
= V
in
> V
= 2 × f
DD
DD
+ 0.3
3, 5
4, 5
) is greater than I
ref_1:1
)
SS
DD
and their respective V
range during instantaneous and operating maximum current
Symbol
OI
f
I
C
Symbol
I
ref_crystal
DD
IC
f
f
DD
ref_1:1
L
ref_ext
f
f
f
DD
sys/2
f
SCM
LOR
t
sys
cst
, the injection current may flow out of V
DD
1
load will shunt current greater than maximum
(continued)
–1.0
Min
–10
—
—
—
f
ref
Value
10.25
Min.
100
24
—
8
8
0
÷ 32
DD
.
1
Typical
TBD
135
100
—
—
Value
15.25
Max.
1000
150
25
25
75
75
75
10
Freescale Semiconductor
Max
150
1.0
MHz
MHz
MHz
MHz
MHz
Unit
25
50
10
kHz
—
—
ms
DD
and could
Unit
mA
mA
mA
mA
pF
pF
μA