MC9S08EL32 Datasheet, PDF (340/356 Pages) Freescale Semiconductor, Inc – 8-Bit HCS08 Central Processor Unit (CPU)

Appendix A Electrical Characteristics
Table A-8. Oscillator Electrical Specifications
(Temperature Range = –40 to 125°C Ambient) (continued)
Num C
Rating
Symbol Min
Typ¹
Max Unit
Crystal start-up time ³
Low range, low gain (RANGE = 0, HGO = 0)
t
CSTL-LP
—
200
—
5T
Low range, high gain (RANGE = 0, HGO = 1)
High range, low gain (RANGE = 1, HGO = 0)⁴
High range, high gain (RANGE = 1, HGO = 1)⁴
t
CSTL-HGO
—
400
—
ms
t
CSTH-LP
—
5
—
t
CSTH-HGO
—
20
—
Square wave input clock frequency (EREFS = 0, ERCLKEN = 1)
6T
FEE or FBE mode ²
f_extal 0.03125 —
5
MHz
FBELP mode
0
—
40 MHz
1 _{Typical data was characterized at 5.0 V, 25°C or is recommended value.}
2 _{The input clock source must be divided using RDIV to within the range of 31.25 kHz to 39.0625 kHz.}
3 _{Characterized and not tested on each device. Proper PC board layout procedures must be followed to achieve specifications.}
4 _{4 MHz crystal}
EXTAL
MCU
XTAL
R_F
R_S
C₁
Crystal or Resonator
C₂
A.9 Internal Clock Source (ICS) Characteristics
Table A-9. ICS Frequency Specifications
(Temperature Range = –40 to 125°C Ambient)
Num C
Rating
1
P
Internal reference frequency — factory trimmed at V_DD
= 5 V and temperature = 25°C
2 T _{Internal reference frequency — untrimmed}¹
3 P Internal reference frequency — trimmed
4 D Internal reference startup time
5
—
DCO output frequency range — untrimmed¹ value
provided for reference: f_{dco_ut} = 1024 x f_{int_ut}
6 D DCO output frequency range — trimmed
7
D
Resolution of trimmed DCO output frequency at fixed
voltage and temperature (using FTRIM)
8
D
Resolution of trimmed DCO output frequency at fixed
voltage and temperature (not using FTRIM)
Symbol
f_{int_ft}
f_{int_ut}
f_{int_t}
t_irefst
f_{dco_ut}
f_{dco_t}
Δf_{dco_res_t}
Δf_{dco_res_t}
Min
—
25
31.25
—
25.6
32
—
—
Typical
31.25
36
—
55
36.86
—
± 0.1
± 0.2
Max
—
41.66
39.0625
100
42.66
40
± 0.2
± 0.4
Unit
kHz
kHz
kHz
μs
MHz
MHz
%f_dco
%f_dco
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
342
Freescale Semiconductor