MC9S08AC16_0911 Datasheet, PDF (309/336 Pages) Freescale Semiconductor, Inc – HCS08 Microcontrollers

Appendix A Electrical Characteristics and Timing Specifications
Table A-11. ICG Frequency Specifications (continued)
(V_DDA = V_DDA (min) to V_DDA (max), Temperature Range = –40 to 125°C Ambient)
Num C
Characteristic
Symbol
Min
Typ¹
Max
Unit
MC9S08ACxx: Internal oscillator deviation from
trimmed frequency⁹
V_DD = 2.7 – 5.5 V, (constant temperature)
V_DD = 5.0 V ±10%, –40° C to 125°C
ACC_int
—
—
± 0.5
±0.5
±2
±2
%
18
S9S08AWxxA: Internal oscillator deviation from
trimmed frequency¹⁰
C V_DD = 2.7 – 5.5 V, (constant temperature)
P V_DD = 5.0 V ±10%, –40° C to 85°C
ACC_int
—
± 0.5
±1.5
—
±0.5
±1.5
%
P V_DD = 5.0 V ±10%, –40° C to 125°C
—
±0.5
±2.0
1 _{Typical values are based on characterization data at VDD = 5.0V, 25°C unless otherwise stated.}
2 _{Self-clocked mode frequency is the frequency that the DCO generates when the FLL is open-loop.}
3 _{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.
4 _{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.
5 _{This parameter is characterized before qualification rather than 100% tested.}
6 _{Proper PC board layout procedures must be followed to achieve specifications.}
7 _{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.
8 _{Jitter is the average deviation from the programmed frequency measured over the specified interval at maximum fICGOUT.}
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_DDA and V_SSA and variation in crystal oscillator frequency increase the C_Jitter percentage for
a given interval.
9 _{See Figure A-9.}
10 _{See Figure A-9.}
MC9S08AC16 Series Data Sheet, Rev. 8
Freescale Semiconductor
309