Electrical Characteristics
1
Table 14. DC Electrical Specifications (continued)
Characteristic
Symbol
Min
Max
Unit
Output high voltage (high drive)
IOH = -5 mA
VOH
VDD – 0.5
—
V
Output low voltage (high drive)
IOL = 5 mA
VOL
VOH
VOL
—
VDD - 0.5
—
0.5
—
V
V
V
Output high voltage (low drive)
IOH = -2 mA
Output low voltage (low drive)
IOL = 2 mA
0.5
Weak internal pull Up device current, tested at VIL Max.2
IAPU
Cin
–10
–130
μA
Input Capacitance 3
pF
• All input-only pins
• All input/output (three-state) pins
—
—
7
7
1
Refer to Table 15 for additional PLL specifications.
2
3
Refer to Table 4 for pins having internal pull-up devices.
This parameter is characterized before qualification rather than 100% tested.
2.7
Clock Source Electrical Specifications
Table 15. Oscillator and PLL Specifications
(VDD and VDDPLL = 2.7 to 3.6 V, VSS = VSSPLL = 0 V)
Characteristic
Symbol
Min
Max
Unit
Clock Source Frequency Range of EXTAL Frequency Range
MHz
• Crystal
fcrystal
fext
0.5
0
48.0
50.0 or 60.0
• External1
PLL reference frequency range
fref_pll
fsys
2
10.0
MHz
MHz
System frequency 2
• External clock mode
• On-chip PLL frequency
0
66.67 or 803
66.67 or 803
f
ref / 32
Loss of reference frequency 4, 6
Self clocked mode frequency 5
Crystal start-up time 6, 7
fLOR
fSCM
tcst
100
1
1000
5
kHz
MHz
ms
—
0.1
EXTAL input high voltage
• External reference
VIHEXT
V
2.0
VDD
EXTAL input low voltage
• External reference
VILEXT
V
VSS
—
0.8
500
60
PLL lock time4,8
tlpll
tdc
μs
Duty cycle of reference 4
40
% fref
MCF52259 ColdFire Microcontroller, Rev. 0
34
Freescale Semiconductor
FREESCALE [ Freescale ]
