FS32K148UFT0VLHT datasheet(40/100 Pages) NXP

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System Clock Generation (SCG) specifications

6.2.3.1 Fast internal RC Oscillator (FIRC) electrical specifications

Table 29. Fast internal RC Oscillator electrical specifications for S32K1xx series

Symbol

Parameter1

Value

Unit

Min.

Typ.

Max.

FFIRC

FIRC target frequency

—

MHz

ΔF

Frequency deviation across process, voltage, and

temperature < 105°C

—

±0.5

±1

%FFIRC

ΔF125

Frequency deviation across process, voltage, and

temperature < 125°C

—

±0.5

±1.1

%FFIRC

TStartup

Startup time

3.4

µs2

TJIT, 3

Cycle-to-Cycle jitter

—

300

500

TJIT3

Long term jitter over 1000 cycles

—

0.04

0.1

%FFIRC

1. With FIRC regulator enable

2. Startup time is defined as the time between clock enablement and clock availability for system use.

3. FIRC as system clock

Table 30. Fast internal RC Oscillator electrical specifications for S32K14xW series

Symbol

Parameter1

Value

Unit

Min.

Typ.

Max.

FFIRC

FIRC target frequency

—

MHz

ΔF

Frequency deviation across process, voltage, and

temperature

—

±0.5

±1.4

%FFIRC

TStartup

Startup time

3.4

µs2

TJIT, 3

Cycle-to-Cycle jitter

—

300

500

TJIT3

Long term jitter over 1000 cycles

—

0.04

0.1

%FFIRC

1. With FIRC regulator enable

2. Startup time is defined as the time between clock enablement and clock availability for system use.

3. FIRC as system clock

NOTE

Fast internal RC oscillator is compliant with LIN when device

is used as a slave node.

6.2.3

System Clock Generation (SCG) specifications

S32K1xx Data Sheet, Rev. 13, 04/2020

NXP Semiconductors

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