MPC5645S datasheet(87/146 Pages) FREESCALE

87 / 146 page

Qorivva MPC5645S Microcontroller Data Sheet, Rev. 8

Freescale Semiconductor

4.13

Fast internal RC oscillator (16 MHz) electrical characteristics

The device provides a fast internal RC oscillator (FIRC). This is used as the default clock at the power-up of the device.

4.14

Slow internal RC oscillator (128 kHz) electrical characteristics

The device provides a slow internal RC oscillator (SIRC). This can be used as the reference clock for the RTC module.

4 Data based on device simulation.

5 2x sys clock required for generation of DDR timing.

6 f

CPU of 125 MHz can be achieved only at temperatures up to 105 °C with a maximum FM depth of 2%.

7 Data based on characterization results, not tested in production

Table 41. Fast internal oscillator electrical characteristics

Symbol

Parameter

Conditions1

1 V

DD = 3.3 V ± 10% / 5.0 V ± 10%, TA = -40 to +105 °C, unless otherwise specified.

Value2

2 All values need to be confirmed during device validation.

Unit SpecID

Min

Typ

Max

fRCM

CC3

3 Guaranteed by device simulation, not tested in production.

P RC oscillator high frequency

TA = 25 °C, trimmed

—

MHz O12.1

IRCMRUN

CC3 D RC oscillator high frequency current in run-

ning mode

TA = 25 °C, trimmed

—

200

µA

O12.2

IRCMPWD

CC3 D RC oscillator high frequency current in power

down mode

TA = 25 °C

—

µA

O12.3

RCMVAR CC4

4 Guaranteed by device characterization, not tested in production.

C RC oscillator variation in temperature and

supply with respect to fRC at TA = 55 °C in

high-frequency configuration

—

–5

—

O12.5

Table 42. Slow internal RC oscillator electrical characteristics

Symbol

Parameter

Conditions1

1 V

DD = 3.3 V ± 10% / 5.0 V ± 10%, TA = -40 to +105 °C, unless otherwise specified.

Value2

2 All values need to be confirmed during device validation.

Unit

SpecID

Min

Typ

Max

fRCL

CC3

3 Guaranteed by device simulation, not tested in production

P RC oscillator low frequency

TA = 25 °C, trimmed

—

128

—

kHz

O13.1

IRCL

CC3 D RC oscillator low frequency current

TA = 25 °C, trimmed

—

µA

O13.2

RCLVAR

CC3 C RC oscillator variation in temperature and

supply with respect to fRC at TA = 55 °C in

high frequency configuration

High frequency config-

uration

–10

—

+10

O13.4

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