MC9S08QE8C32 데이터 시트보기 (PDF) - Freescale Semiconductor

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MC9S08QE8C32

8-Bit HCS08 Central Processor Unit (CPU)

Freescale Semiconductor 

Electrical Characteristics

3.8 External Oscillator (XOSCVLP) Characteristics

Refer to Figure 12 and Figure 13 for crystal or resonator circuits.

Table 10. XOSCVLP Specifications (Temperature Range = –40 to 85°C Ambient)

Num C

Characteristic

Symbol Min. Typical1 Max. Unit

Oscillator crystal or resonator (EREFS = 1, ERCLKEN = 1)

1

C

Low range (RANGE = 0)

High range (RANGE = 1), high gain (HGO = 1), FBELP mode

flo

fhi

32

1

— 38.4 kHz

—

16 MHz

High range (RANGE = 1), low power (HGO = 0), FBELP mode

fhi

1

—

8 MHz

Load capacitors

2 D Low range (RANGE=0), low power (HGO = 0)

Other oscillator settings

C1,C2

See Note 2

See Note 3

Feedback resistor

3D

Low range, low power (RANGE = 0, HGO = 0)2

Low range, high gain (RANGE = 0, HGO = 1)

High range (RANGE = 1, HGO = X)

RF

—

—

—

10

—

—

MΩ

—

1

—

Series resistor —

Low range, low power (RANGE = 0, HGO = 0)2

Low range, high gain (RANGE = 0, HGO = 1)

4D

High range, low power (RANGE = 1, HGO = 0)

High range, high gain (RANGE = 1, HGO = 1)

≥ 8 MHz

4 MHz

1 MHz

Crystal start-up time4

Low range, low power

5 C Low range, high gain

High range, low power

High range, high gain

—

—

RS

—

—

—

—

t

CSTL

—

—

t

CSTH

—

—

—

—

100

—

0

—

kΩ

0

0

0

10

0

20

600

—

400

5

—

—

ms

15

—

Square wave input clock frequency (EREFS = 0, ERCLKEN = 1)

6 D FEE mode

FBE or FBELP mode

fextal 0.03125

—

0

—

20 MHz

20 MHz

1 Data in Typical column was characterized at 3.0 V, 25 °C or is typical recommended value.

2 Load capacitors (C1,C2), feedback resistor (RF) and series resistor (RS) are incorporated internally when RANGE = HGO = 0.

3 See crystal or resonator manufacturer’s recommendation.

4 Proper PC board layout procedures must be followed to achieve specifications.

MC9S08QE8 Series Data Sheet, Rev. 7

Freescale Semiconductor

17

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