H8SLASH3003 datasheet(329/715 Pages) RENESAS

329 / 715 page

Each TIOR is an 8-bit readable/writable register that selects the output compare or input capture

function for GRA and GRB, and specifies the functions of the TIOCA and TIOCB pins. If the

output compare function is selected, TIOR also selects the type of output. If input capture is

selected, TIOR also selects the edge or edges of the input capture signal.

TIOR is initialized to H'88 by a reset and in standby mode.

Bit 7—Reserved: Read-only bit, always read as 1.

Bits 6 to 4—I/O Control B2 to B0 (IOB2 to IOB0): These bits select the GRB function.

Bit 6

Bit 5

Bit 4

IOB2

IOB1

IOB0

Function

No output at compare match

(Initial value)

0 output at GRB compare match*1

1 output at GRB compare match*1

Output toggles at GRB compare match

(1 output in channel 2)*1, *2

GRB captures rising edge of input

GRB captures falling edge of input

GRB captures both edges of input

Notes: 1. After a reset, the output is 0 until the first compare match.

2. Channel 2 output cannot be toggled by compare match. This setting selects 1 output

instead.

Bit

Initial value

Read/Write

—

IOB2

R/W

IOB1

R/W

IOB0

R/W

—

IOA0

R/W

IOA2

R/W

IOA1

R/W

I/O control A2 to A0

These bits select GRA

functions

Reserved bit

I/O control B2 to B0

These bits select GRB functions

Reserved bit

GRB is an output

compare register

GRB is an input

capture register

311

H8/3003 Datasheet(PDF) 329 Page - Renesas Technology Corp

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