7700 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

生产厂家

7700

16-BIT SINGLE-CHIP MICROCOMPUTER

Renesas Electronics 

4. Register structure

The view of the register structure is described below:

XXX register (address XX16)

✽5

✽2

✽1

b7 b6 b5 b4 b3 b2 b1 b0

X0

Bit

0

1

2

3

4

5

6

7

✽1

✽2

✽3

✽4

Bit name

• • • select bit

• • • select bit

• • • flag

Fix this bit to “0.”

This bit is invalid in … mode.

Nothing is assigned.

The value is “0” at reading.

✽6

Function

0:…

1:…

The value is “0” at reading.

b2 b1

00:…

01:…

10:…

11:…

0:…

1:…

At reset R/W ✽3

Undefined WO

0

RW

0

RW

0

RO

0

RW

0

RW

Undefined —

0

—

✽4

Blank

0

1

✕

: Set to “0” or “1” according to the usage.

: Set to “0” at writing.

: Set to “1” at writing.

: Invalid depending on the mode or state. It may be “0” or “1.”

: Nothing is assigned.

0

1

Undefined

: “0” immediately after reset.

: “1” immediately after reset.

: Undefined immediately after reset.

RW

: It is possible to read the bit state at reading. The written value becomes valid.

RO

: It is possible to read the bit state at reading. The written value becomes invalid. Accordingly, the written

value may be “0” or “1.”

WO

: The written value becomes valid. It is impossible to read the bit state. The value is undefined at reading.

However, when [“0” at reading”] is indicated in the “Function” or “Note” column, the bit is always “0” at

reading. (See ✽5 above.)

—

: It is impossible to read the bit state. The value is undefined at reading.

However, when [“0” at reading”] is indicated in the “Function” or “Note” column, the bit is always “0” at

reading. (See ✽6 above.)

The written value becomes invalid. Accordingly, the written value may be “0” or “1.”

Invalid for that function or mode.

2

Share Link: