sc9s08mz16 Freescale Semiconductor, Inc, sc9s08mz16 Datasheet - Page 256

• Manufacturer Part Number: sc9s08mz16
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

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Appendix A Electrical Characteristics and Timing Specifications
256
Num
Typical values are based on characterization data at V
Self-clocked mode frequency is the frequency that the DCO generates when the FLL is open-loop.
Loss of reference frequency is the reference frequency detected internally, which transitions the ICG into self-clocked mode if it
is not in the desired range.
Loss of DCO frequency is the DCO frequency detected internally, which transitions the ICG into FLL bypassed external mode (if
an external reference exists) if it is not in the desired range.
This parameter is characterized before qualification rather than 100% tested.
Proper PC board layout procedures must be followed to achieve specifications.
This specification applies to the period of time required for the FLL to lock after entering FLL engaged internal or external modes.
If a crystal/resonator is being used as the reference, this specification assumes it is already running.
Jitter is the average deviation from the programmed frequency measured over the specified interval at maximum f
Measurements are made with the device powered by filtered supplies and clocked by a stable external clock signal. Noise
injected into the FLL circuitry via V
a given interval.
See
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Figure
C
C
C
C
C
C
C
C
C
C
A-7.
(V
Self-clock mode reset (ICGOUT) frequency
Loss of reference frequency
Low range
High range
Loss of DCO frequency
Crystal start-up time
Low range
High range
FLL lock time
Low range
High range
FLL frequency unlock range
FLL frequency lock range
ICGOUT period jitter,
Long term jitter (averaged over 2 ms interval)
Internal oscillator deviation from trimmed
frequency
V
V
DD
DD
DDA
= 2.7 – 5.5 V, (constant temperature)
= 5.0 V ±10%, 20° C to 85°C
= V
9
DDA
, 7
Table A-9. ICG Frequency Specifications (continued)
(min) to V
Characteristic
DDA
5, 6
, 8
and V
4
measured at f
SC9S08MZ16 MCU Data Sheet, Rev. 1
DDA
SSA
3
(max), Temperature Range = –40 to 85°C Ambient)
and variation in crystal oscillator frequency increase the C
DD
ICGOUT
= 5.0 V, 25°C unless otherwise stated.
Max
f
Symbol
Self_reset
n
ACC
C
t
t
t
n
t
f
f
CSTH
CSTL
Lockh
Unlock
Lockl
LOR
LOD
Lock
Jitter
int
–4*N
–2*N
Min
5.5
0.5
50
—
—
—
—
—
—
—
5
Typic
± 0.5
±0.5
430
al
8
4
1
Freescale Semiconductor
Jitter
Max
10.5
500
4*N
2*N
1.5
0.2
25
—
—
—
—
2
2
percentage for
ICGOUT
counts
counts
% f
MHz
MHz
Unit
kHz
.
ms
ms
%
ICG