MPC5644B View Datasheet(PDF) - Freescale Semiconductor
Part Name
Description
MFG CO.
'MPC5644B' PDF : 114 Pages View PDF
OSC32K_EXTAL
OSC32K_XTAL
DEVICE
C1
RP
C2
OSC32K_EXTAL
OSC32K_XTAL
DEVICE
Figure 12. Crystal oscillator and resonator connection scheme
NOTE
OSC32K_XTAL/OSC32K_EXTAL must not be directly used to drive external circuits.
l
C0
C1
Crystal
C2
Cm
Rm
C1
Lm
C2
Figure 13. Equivalent circuit of a quartz crystal
Table 36. Crystal motional characteristics1
Symbol
Parameter
Conditions
Value
Unit
Min Typ Max
Lm Motional inductance
—
— 11.796 — KH
Cm Motional capacitance
—
—
2
— fF
C1/C2 Load capacitance at OSC32K_XTAL and
—
18
—
28 pF
OSC32K_EXTAL with respect to ground2
Rm3 Motional resistance
AC coupled @ C0 = 2.85 pF4 —
—
65 k
AC coupled @ C0 = 4.9 pF(4) —
—
50
AC coupled @ C0 = 7.0 pF(4) —
—
35
AC coupled @ C0 = 9.0 pF(4) —
—
30
MPC5646C Microcontroller Data Sheet, Rev. 3
68
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
Share Link: 
