MC68HLC908LJ12 Просмотр технического описания (PDF) - Freescale Semiconductor

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MC68HLC908LJ12

Addendum to MC68HC908LJ12 Technical Data

Freescale Semiconductor 

Freescale Semiconductor, Inc.

HC908LJ12AD/D

MC68HLC908LJ12

Oscillator

Characteristics

Table 4. Oscillator Specifications (2.4 to 2.7V)

Characteristic

Internal oscillator clock frequency

Symbol

fICLK

Min

Typ

Max Unit

—

See Figure 1.

—

Hz

External reference clock to OSC1(1)

fOSC

dc

—

8M

Hz

Crystal reference frequency(2)

Crystal load capacitance(3)

Crystal fixed capacitance

Crystal tuning capacitance

Feedback bias resistor

Series resistor(4)

1. No more than 10% duty cycle deviation from 50%.

2. Fundamental mode crystals only.

3. Consult crystal manufacturer’s data.

4. Not Required for high frequency crystals.

fXCLK

CL

C1

C2

RB

RS

32.768 k

4.9152M Hz

—

—

—

—

2 × CL (25p)

—

F

—

2 × CL (25p)

—

F

—

10 M

—

Ω

—

100 k

—

Ω

Table 5. Oscillator Specifications (2.7 to 3.3V)

Characteristic

Internal oscillator clock frequency

Symbol

fICLK

Min

Typ

Max Unit

—

See Figure 1.

—

Hz

External reference clock to OSC1(1)

fOSC

dc

—

16 M

Hz

Crystal reference frequency(2)

Crystal load capacitance(3)

Crystal fixed capacitance

Crystal tuning capacitance

Feedback bias resistor

Series resistor(4)

1. No more than 10% duty cycle deviation from 50%.

2. Fundamental mode crystals only.

3. Consult crystal manufacturer’s data.

4. Not Required for high frequency crystals.

fXCLK

CL

C1

C2

RB

RS

32.768 k

4.9152M Hz

—

—

—

—

2 × CL (25p)

—

F

—

2 × CL (25p)

—

F

—

10 M

—

Ω

—

100 k

—

Ω

Addendum to MC68HC908LJ12 Technical Data

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