H8SSLASH2214 datasheet(91/936 Pages) RENESAS

Il numero della parte	H8S/2214

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

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Produttore elettronici	RENESAS [Renesas Technology Corp]

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Section 2 CPU

Rev.4.00 Sep. 18, 2008 Page 31 of 872

REJ09B0189-0400

2.5

Data Formats

The CPU can process 1-bit, 4-bit (BCD), 8-bit (byte), 16-bit (word), and 32-bit (longword) data.

Bit-manipulation instructions operate on 1-bit data by accessing bit n (n = 0, 1, 2, …, 7) of byte

operand data. The DAA and DAS decimal-adjust instructions treat byte data as two digits of 4-bit

BCD data.

2.5.1

General Register Data Formats

Figures 2.10 and 2.11 show the data formats in general registers.

7 6 5 4 3 2 1 0

Don’t care

76543210

Don’t care

Upper

Lower

LSB

MSB

LSB

Data Type

Data Format

1-bit data

4-bit BCD data

Byte data

RnH

RnL

RnH

RnL

RnH

RnL

MSB

Don’t care

Upper

Lower

Don’t care

General register ER

General register E

General register R

General register RH

General register RL

Most significant bit

Least significant bit

Legend:

ERn:

En:

Rn:

RnH:

RnL:

MSB:

LSB:

Figure 2.10 General Register Data Formats (1)

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