K60P144M100SF2V2 Datasheet, PDF (32/80 Pages) Freescale Semiconductor, Inc – K60 Sub-Family

Peripheral operating requirements and behaviors
3. Proper PC board layout procedures must be followed to achieve specifications.
4. Crystal startup time is defined as the time between the oscillator being enabled and the OSCINIT bit in the MCG_S register
being set.
6.3.3 32 kHz Oscillator Electrical Characteristics
This section describes the module electrical characteristics.
6.3.3.1 32 kHz oscillator DC electrical specifications
Table 18. 32kHz oscillator DC electrical specifications
Symbol
V_BAT
R_F
C_para
V_pp1
Description
Min.
Typ.
Max.
Unit
Supply voltage
1.71
—
3.6
V
Internal feedback resistor
—
100
—
MΩ
Parasitical capacitance of EXTAL32 and XTAL32
—
5
7
pF
Peak-to-peak amplitude of oscillation
—
0.6
—
V
1. When a crystal is being used with the 32 kHz oscillator, the EXTAL32 and XTAL32 pins should only be connected to
required oscillator components and must not be connected to any other devices.
6.3.3.2 32kHz oscillator frequency specifications
Table 19. 32kHz oscillator frequency specifications
Symbol Description
f_{osc_lo} Oscillator crystal
t_start Crystal start-up time
f_{ec_extal32} Externally provided input clock frequency
v_{ec_extal32} Externally provided input clock amplitude
Min.
Typ.
Max.
Unit
—
32.768
—
kHz
—
1000
—
ms
—
32.768
—
kHz
700
—
V_BAT
mV
Notes
1
2
2, 3
1. Proper PC board layout procedures must be followed to achieve specifications.
2. This specification is for an externally supplied clock driven to EXTAL32 and does not apply to any other clock input. The
oscillator remains enabled and XTAL32 must be left unconnected.
3. The parameter specified is a peak-to-peak value and V_IH and V_IL specifications do not apply. The voltage of the applied
clock must be within the range of V_SS to V_BAT.
6.4 Memories and memory interfaces
6.4.1 Flash electrical specifications
This section describes the electrical characteristics of the flash memory module.
K60 Sub-Family Data Sheet, Rev. 1, 6/2012.
32
Preliminary
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