mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 1269

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

1
2
3
4
5
Freescale Semiconductor
Conditions are shown in
Num
Depending on the crystal a damping series resistor might be necessary
XCLKS = 0
f
Maximum value is for extreme cases using high Q, low frequency crystals
If full swing Pierce oscillator/external clock circuitry is used. (XCLKS = 0)
osc
1a
1b
10
11
12
13
14
2
3
4
5
6
7
8
9
= 4 MHz, C = 22 pF.
C
C Crystal oscillator range (loop controlled Pierce)
C Crystal oscillator range (full swing Pierce)
P Startup current
C Oscillator start-up time (loop controlled Pierce)
D Clock quality check time-out
P Clock monitor failure assert frequency
P External square wave input frequency
D External square wave pulse width low
D External square wave pulse width high
D External square wave rise time
D External square wave fall time
D Input capacitance (EXTAL, XTAL inputs)
P EXTAL pin input high voltage
P EXTAL pin input low voltage
C EXTAL pin input hysteresis
T EXTAL pin input high voltage
T EXTAL pin input low voltage
Table A-4
Rating
unless otherwise noted
5
Table A-22. Oscillator Characteristics
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5
5
5
MC9S12XDP512 Data Sheet, Rev. 2.17
1, 2
V
V
V
V
V
Symbol
HYS,EXTAL
t
t
IH,EXTAL
IH,EXTAL
IL,EXTAL
IL,EXTAL
UPOSC
CQOUT
f
t
t
t
t
f
f
i
CMFA
f
EXTH
EXTR
EXTF
EXTL
OSC
C
OSC
OSC
EXT
IN
V
V
SSPLL
0.75*
0.45
DDPLL
Min
100
4.0
0.5
0.5
0.3
50
—
—
—
—
—
—
—
5
5
–
Appendix A Electrical Characteristics
Typ
100
250
—
—
—
—
—
—
—
—
—
—
—
—
—
7
3
V
V
DDPLL
0.25*
Max
DDPLL
200
50
2.5
0.3
16
40
80
—
—
—
—
—
—
—
1
1
4
+
MHz
MHz
MHz
Unit
KHz
mV
ms
ns
ns
ns
ns
pF
V
V
V
V
s
A
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