R5F21122DFP データシートの表示（PDF） - Renesas Electronics

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R5F21122DFP

RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / R8C /Tiny SERIES

Renesas Electronics 

How to Use This Manual

1. Introduction

This hardware manual provides detailed information on the R8C/12 Group of microcomputers.

Users are expected to have basic knowledge of electric circuits, logical circuits and microcomputers.

2. Register Diagram

The symbols, and descriptions, used for bit function in each register are shown below.

XXX register

b7 b6 b5 b4 b3 b2 b1 b0

0

*1

Symbol

XXX

Address

After reset

*5

XXX

00h

Bit symbol

XXX0

Bit Name

XXX Bit

XXX1

Function

b1 b0

1 0: XXX

0 1: XXX

1 0: Avoid this setting

1 1: XXX

RW

*2

RW

RW

Nothing is assigned.

(b2)

When write, should set to "0". When read, its content is indeterminate.

*3

(b3)

Reserved Bit

Must set to “0”

RW

*4

XXX4

XXX Bit

Function varies depending on each

RW

operation mode

XXX5

WO

XXX6

RW

XXX7

XXX Bit

0: XXX

1: XXX

RO

*1

Blank:Set to “0” or “1” according to the application

0: Set to “0”

1: Set to “1”

X: Nothing is assigned

*2

RW: Read and write

RO: Read only

WO: Write only

−: Nothing is assigned

*3

•Reserved bit

Reserved bit. Set to specified value.

*4

•Nothing is assigned

Nothing is assigned to the bit concerned. As the bit may be use for future functions,

set to “0” when writing to this bit.

•Do not set to this value

The operation is not guaranteed when a value is set.

•Function varies depending on mode of operation

Bit function varies depending on peripheral function mode.

Refer to respective register for each mode.

*5

Follow the text in each manual for binary and hexadecimal notations.

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