Appendix K OSC32K Electrical Specifications
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
815
Appendix K
OSC32K Electrical Specifications
K.1
DC Electrical Specifications
K.2
Frequency Specifications
Table K-1. OSC32K DC Electrical Specifications
Num
C
Characteristic
Symbol
Min
Typ
Max
Uni
t
1
C
OSC32K Supply Current V
DDA
=5.0
I
DDOSC
40
60
A
2
D
Allowed Impedence on 32K_EXTAL/XTAL pins
I
lk_ext
10
—
—
3
—
32K_EXTAL Load Capacitance
32K_XTAL Load Capacitance
C
x
C
y
—
(1)
1. See crystal or resonator manufacturer’s recommendation
4
—
External Feedback resistor
R
F
10
M
5
—
External Series resistor
R
S
200
K
6
T
Peak-to-Peak Amplitude of Oscillation
V
pp
0.75*V
DDX
V
DDX
V
Table K-2. OSC32K Frequency Specifications
Num C
Characteristic
Symbol
Min
Typ
Max
Unit
1
D
Oscillator crystal or resonator frequency
f
osc_lo
32
—
40
kHz
2
C
Crystal Start-up Time
(1), (2)
1. This parameter is characterized before qualification rather than 100% tested.
2. Proper PC board layout procedures must be followed to achieve specifications.
t
cst
—
1000
4000
ms