K20P104M100SF2 Freescale Semiconductor, K20P104M100SF2 Datasheet - Page 27

• Manufacturer Part Number: K20P104M100SF2
• Description: K20 Sub-Family
• Manufacturer: Freescale Semiconductor

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6.3.2.2 Oscillator frequency specifications
1. This parameter is characterized before qualification rather than 100% tested.
2. Proper PC board layout procedures must be followed to achieve specifications.
3. Crystal start up time is defined as the time between the oscillator being enabled and the OSCINIT bit in the MCG_S
6.3.3 32kHz Oscillator Electrical Characteristics
This section describes the module electrical characteristics.
6.3.3.1 32kHz Oscillator DC Electrical Specifications
Freescale Semiconductor, Inc.
Symbol
f
f
t
Symbol
osc_hi_1
osc_hi_2
dc_extal
f
register being set.
osc_lo
C
V
C
t
V
cst
R
BAT
para
load
pp
Table 14. Oscillator frequency specifications, (V
Table 15. 32kHz Oscillator Module DC Electrical Specifications (V
F
Oscillator crystal or resonator frequency — low
frequency mode
Oscillator crystal or resonator frequency — high
frequency mode (low range)
Oscillator crystal or resonator frequency — high
frequency mode (high range)
Input clock duty cycle (external clock mode)
Crystal start-up time — 32 kHz low-frequency,
low-power mode
Crystal start-up time — 32 kHz low-frequency,
high-gain mode
Crystal start-up time — 8 MHz high-frequency,
low-power mode
Crystal start-up time — 8 MHz high-frequency,
high-gain mode
Description
Supply voltage
Internal feedback resistor
Parasitical capacitance of EXTAL32 and XTAL32
Internal load capacitance (programmable)
Peak-to-peak amplitude of oscillation
Description
V
(T
DD33OSC
A
= T
K20 Sub-Family Data Sheet Data Sheet, Rev. 1, 11/2010.
L
to T
(max), T
H
)
A
= T
L
Preliminary
to T
H
)
Min.
32
40
—
—
—
—
1
8
Peripheral operating requirements and behaviors
1.71
Min.
—
—
—
—
DD33OSC
TBD
Typ.
800
50
—
—
—
4
3
= V
Typ.
100
2.5
0.6
15
—
Max.
DD33OSC
40
32
60
—
—
—
—
8
SSOSC
(min) to
Max.
MHz
MHz
Unit
kHz
3.6
ms
ms
ms
ms
—
—
—
—
%
= 0 V
DC
1, 2,
Notes
Unit
MΩ
pF
pF
)
V
V
3
27
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