MCF51QM32VFM(2012) View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

MCF51QM32VFM
(Rev.:2012)

Embedded - Microcontrollers, Integrated Circuits (ICs)

Freescale Semiconductor 

Clock modules

Table 15. Oscillator DC electrical specifications (continued)

Symbol

RF

RS

Description

Feedback resistor — low-frequency, low-power

mode (HGO=0)

Feedback resistor — low-frequency, high-gain

mode (HGO=1)

Feedback resistor — high-frequency, low-power

mode (HGO=0)

Feedback resistor — high-frequency, high-gain

mode (HGO=1)

Series resistor — low-frequency, low-power

mode (HGO=0)

Series resistor — low-frequency, high-gain mode

(HGO=1)

Series resistor — high-frequency, low-power

mode (HGO=0)

Series resistor — high-frequency, high-gain

mode (HGO=1)

• 1 MHz resonator

• 2 MHz resonator

• 4 MHz resonator

• 8 MHz resonator

• 16 MHz resonator

• 20 MHz resonator

• 32 MHz resonator

Vpp5 Peak-to-peak amplitude of oscillation (oscillator

mode) — low-frequency, low-power mode

(HGO=0)

Peak-to-peak amplitude of oscillation (oscillator

mode) — low-frequency, high-gain mode

(HGO=1)

Peak-to-peak amplitude of oscillation (oscillator

mode) — high-frequency, low-power mode

(HGO=0)

Peak-to-peak amplitude of oscillation (oscillator

mode) — high-frequency, high-gain mode

(HGO=1)

Min.

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Typ.

—

10

—

1

—

200

—

6.6

3.3

0

0

0

0

0

0.6

VDD

0.6

VDD

Max.

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Unit

Notes

MΩ

2, 4

MΩ

MΩ

MΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

V

V

V

V

1. VDD=3.3 V, Temperature =25 °C

2. See crystal or resonator manufacturer's recommendation

3. Cx,Cy can be provided by using either the integrated capacitors or by using external components.

4. When low power mode is selected, RF is integrated and must not be attached externally.

5. The EXTAL and XTAL pins should only be connected to required oscillator components and must not be connected to any

other devices.

MCF51QM128 Data Sheet, Rev. 6, 01/2012.

26

Freescale Semiconductor, Inc.

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