MC56F81663 datasheet(19/73 Pages) NXP

19 / 73 page

Table 2. Signal descriptions (continued)

Signal Name

LQFP

LQFP/

QFN

State

During

Reset

Type

Signal Description

GPIOB4

—

Input

Input/

Output

GPIO Port B4 — After reset, the default state is

GPIOB4.

(ANB4

CMPC_IN1)

Input

ANB4 — ADCB input channel 4.

CMPC_IN1 — Analog comparator C input 1.

When used as an analog input, the signal goes to

ANB4 and CMPC_IN1.1

GPIOB5

—

Input

Input/

Output

GPIO Port B5 — After reset, the default state is

GPIOB5.

(ANB5

CMPC_IN2)

Input

ANB5 — ADCB input channel 5.

CMPC_IN2 — Analog comparator C input 2.

When used as an analog input, the signal goes to

ANB5 and CMPC_IN2.1

GPIOB6

—

Input

Input/

Output

GPIO Port B6 — After reset, the default state is

GPIOB6.

(ANB6

CMPB_IN1

OPAMPB_IN1)

Input

ANB6 — ADCB input channel 6.

CMPB_IN1 — Analog comparator B input 1.

OPAMPB_IN1 — Operational amplifier B input 1.

When used as an analog input, the signal goes to

ANB6 and CMPB_IN1 and OPAMPB_IN1. 1

GPIOB7

—

Input

Input/

Output

GPIO Port B7 — After reset, the default state is

GPIOB7.

(ANB7

CMPB_IN2

OPAMPB_IN2)

Input

ANB7 — ADCB input channel 7.

CMPB_IN2 — Analog comparator B input 2.

OPAMPB_IN2 — Operational amplifier B input 2.

When used as an analog input, the signal goes to

ANB7 and CMPB_IN2 and OPAMPB_IN2.1

GPIOC0

—

Input

Input/

Output

GPIO Port C0 — After reset, the default state is

GPIOC0.

(EXTAL)

Input

External crystal oscillator input (EXTAL) connects the

internal crystal oscillator input to an external crystal or

ceramic resonator.

(CLKIN0)

Input

External clock input 0 to OCCS.

NOTE: If this pin is selected as the device’s external

clock input, then both SIM_GPSCL[C0] bit in

SIM and OSCTL1[EXT_SEL] bit in OCCS

must be set. The crystal oscillator should be

powered down.

GPIOC1

—

Input

Input/

Output

GPIO Port C1 — After reset, the default state is

GPIOC1.

(XTAL)

Output

External crystal oscillator output (XTAL) connects the

internal crystal oscillator output to an external crystal or

ceramic resonator.

Table continues on the next page...

MC56F81xxx signal and pin descriptions

MC56F81xxx, Rev. 1.1, 12/2020

NXP Semiconductors

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