MC9S08JS16 Series MCU Data Sheet, Rev. 4

Electrical Characteristics

Freescale Semiconductor

18

3.8

MCG Specifications

Table 9. MCG Frequency Specifications (Temperature Range = –40 to 85

°C Ambient)

Num C

Rating

Symbol

Min

Typical

Max

Unit

1

C Average internal reference frequency — untrimmed

25

32.7

41.66

kHz

2

P Average internal reference frequency — trimmed

31.25

—

39.0625

kHz

3

T Internal reference startup time

—60

100

μs

4

C DCO output frequency range — untrimmed

25.6

33.48

42.66

MHz

5

P DCO output frequency range — trimmed

32

—

40

MHz

6C

Resolution of trimmed DCO output frequency at

fixed voltage and temperature (using FTRIM)

Δf

dco_res_t

—

±0.1

±0.2

7C

Resolution of trimmed DCO output frequency at

fixed voltage and temperature (not using FTRIM)

Δf

dco_res_t

—

±0.2

±0.4

8P

Total deviation of trimmed DCO output frequency

over voltage and temperature

Δf

dco_t

—

0.5

–1.0

±2

9C

Total deviation of trimmed DCO output frequency

over fixed voltage and temperature range of

0–70

°C

Δf

dco_t

—

±0.5

±1

10

from FLL disabled (BLPE, BLPI) to FLL enabled (FEI, FEE, FBE, FBI). If a crystal/resonator is being used as the reference,

this specification assumes it is already running.

——

1

ms

11

(BLPE, BLPI) to PLL enabled (PBE, PEE). If a crystal/resonator is being used as the reference, this specification assumes it

is already running.

——

1

ms

12

C

Long term Jitter of DCO output clock (averaged over

—0.02

0.2

13

D VCO operating frequency

7.0

—

55.0

MHz

14

D PLL reference frequency range

1.0

—

2.0

MHz

15

T

Long term accuracy of PLL output clock (averaged

over 2 ms)

—

—%

16

—

0.5664

—%

17

±1.49

—

±2.98

%

18

±4.47

—

±5.97

%

19

D Lock time — FLL

——

s

20

D Lock time — PLL

——

s

21

D

Loss of external clock minimum frequency —

RANGE = 0

—

—

kHz

22

D

Loss of external clock minimum frequency —

RANGE = 1

—

—

kHz