MC56F81663 datasheet(50/73 Pages) NXP

50 / 73 page

System modules

11.2.1 Voltage regulator specifications

The voltage regulator supplies approximately 1.2 V to the device's core logic. For proper

operations, the voltage regulator requires a minimum external 2.2 µF capacitor on each

VCAP pin with total capacitors on all VCAP pins at a minimum of 4.4 µF. Ceramic and

tantalum capacitors tend to provide better performance tolerances. The output voltage can

be measured directly on the VCAP pin. The specifications for this regulator are shown in

Table 18.

Table 18. Regulator 1.2 V parameters

Characteristic

Symbol

Min

Typ

Max

Unit

Output Voltage 1

VCAP

—

1.23

—

Short Circuit Current 2

ISS

—

600

—

Short Circuit Tolerance (VCAP shorted to ground)

TRSC

—

minute

1. Value is after trim

2. Guaranteed by design

Table 19. Bandgap electrical specifications

Characteristic

Symbol

Min

Typ

Max

Unit

Reference Voltage (after trim)

VREF

—

1.241

—

1. Typical value is trimmed at 25

℃. There could be ±50 mV variation due to temperature change.

11.3 Clock modules

11.3.1 External clock operation timing

Parameters listed are guaranteed by design.

Table 20. External clock operation timing requirements

Characteristic

Symbol

Min

Typ

Max

Unit

Frequency of operation (external clock driver)1

fosc

—

MHz

Clock pulse width2

tPW

External clock input rise time3

trise

—

External clock input fall time4

tfall

—

Table continues on the next page...

11.2

System modules

MC56F81xxx, Rev. 1.1, 12/2020

NXP Semiconductors

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