Datasheet

Electrical Characteristics
MC9S12G Family Reference Manual, Rev.1.23
1238 Freescale Semiconductor
A.10 Electrical Characteristics for the Oscillator (XOSCLCP)
Table A-40. XOSCLCP Characteristics (Junction Temperature From –40°C To +150°C)
Conditions are shown in Table A-4 unless otherwise noted
Num
C Rating Symbol Min Typ Max Unit
1
C
Nominal crystal or resonator frequency
f
OSC
4.0 16 MHz
2
P
Startup Current
i
OSC
100 µA
3a
C
Oscillator start-up time (4MHz)
1
1
These values apply for carefully designed PCB layouts with capacitors that match the crystal/resonator requirements.
t
UPOSC
— 2 10 ms
3b
C
Oscillator start-up time (8MHz)
1
t
UPOSC
— 1.6 8 ms
3c
C
Oscillator start-up time (16MHz)
1
t
UPOSC
—15ms
4
P
Clock Monitor Failure Assert Frequency
f
CMFA
200 450 1200 KHz
5
D
Input Capacitance (EXTAL, XTAL pins)
C
IN
7pF
6
C
EXTAL Pin Input Hysteresis
V
HYS,EXTAL
— 120 — mV
7
C
EXTAL Pin oscillation amplitude
(loop controlled Pierce)
all mask sets except for 2N75C
V
PP,EXTAL
— 1.0 — V
8
D
EXTAL Pin oscillation required amplitude
2
(loop controlled Pierce)
all mask sets except for 2N75C
2
Needs to be measured at room temperature on the application board using a probe with very low (<=5pF) input
capacitance.
V
PP,EXTAL
0.8 — 1.5
V