Datasheet

MCF5208 ColdFire
®
Microprocessor Data Sheet, Rev. 3
Electrical Characteristics
Freescale Semiconductor24
5.6 Oscillator and PLL Electrical Characteristics
56 MHz
3.3 10.09 30.71 38.97
2.5 16.43 20.71 17.65
1.5 30.07 35.90 47.90
64 MHz
3.3 15.72 31.37 42.10
2.5 16.56 21.08 17.95
1.5 32.19 38.72 53.50
72 MHz
3.3 20.97 31.40 48.80
2.5 16.87 21.70 18.20
1.5 35.90 43.20 59.50
83.33 MHz
3.3 31.37 25.83 48.60
2.5 17.21 22.80 18.83
1.5 41.10 49.40 67.50
NOTES:
1
All values are measured with a 3.30V EV
DD
, 2.50V SDV
DD
, and 1.5V IV
DD
power
supplies. Tests performed at room temperature with pins configured for high drive
strength.
2
CPU polling a status register. All peripheral clocks except UART0, FlexBus, INTC,
reset controller, PLL, and edge port disabled.
3
Peak current measured while running a while(1) loop with all modules active.
Table 10. PLL Electrical Characteristics
Num Characteristic Symbol
Min.
Value
Max.
Value
Unit
1 PLL Reference Frequency Range
Crystal reference
External reference
f
ref_crystal
f
ref_ext
12
12
25
1
40
1
MHz
MHz
2 Core frequency
CLKOUT Frequency
2
f
sys
f
sys/2
488 x 10
-6
244 x 10
-6
166.66
83.33
MHz
MHz
3 Crystal Start-up Time
3, 4
t
cst
—10ms
4 EXTAL Input High Voltage
Crystal Mode
5
All other modes (External, Limp)
V
IHEXT
V
IHEXT
V
XTAL
+ 0.4
E
VDD
/2 + 0.4
—
—
V
V
5 EXTAL Input Low Voltage
Crystal Mode
5
All other modes (External, Limp)
V
ILEXT
V
ILEXT
—
—
V
XTAL
- 0.4
E
VDD
/2 - 0.4
V
V
7 PLL Lock Time
3, 6
t
lpll
— 50000 CLKIN
8 Duty Cycle of reference
3
t
dc
40 60 %
Table 9. Typical Active Current Consumption Specifications
1
(continued)
f
sys/2
Frequency
Voltage
(V)
Typical
2
Active (mA)
Peak
3
Active
(mA)
SRAM Flash