MB90F474LPF datasheet(55/118 Pages) FUJITSU

55 / 118 page

MB90470 Series

(3) Input Capture

The input capture module detects the rising edge, falling edge, or both edges of an input signal and saves the

value of the 1-bit free-run timer at that moment in a register. This module can also generate an interrupt when

an edge is detected.

The input capture module is composed of input capture registers and a control register. Each of the input captures

has a corresponding external input pin.

• Selection of three valid edges for external input :

Rising edge/falling edge/both edges

• An interrupt can be generated when the valid edge is detected.

• Register List

• Block Diagram

Input capture data registers (IPCP0, IPCP1)

Control status register (ICS0, ICS1)

Default value

00005DH

00005FH

XXXXXXXXB

Default value

00005CH

00005EH

XXXXXXXXB

Default value

000060H

00000000B

( R )

CP14

CP15

CP13

CP12

CP11

CP10

CP09

CP08

( R )

CP06

CP07

CP05

CP04

CP03

CP02

CP01

CP00

(R/W)(R/W)(R/W)(R/W)(R/W)(R/W)(R/W)(R/W)

ICP0

ICP1

ICE1

ICE0

EG11

EG10

EG01

EG00

IN0

EG11 EG10 EG01 EG00

ICP1

ICP0

ICE1

ICE0

IN1

Capture data register 0

Capture data register 1

Edge detection

16-bit timer counter value (T15 to T00)

Interrupt

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