Data Arrangement; Data Arrangement In Register - Renesas R8C/Tiny Series Software Manual

Chapter 1 Overview

1.8 Data Arrangement

1.8.1 Data Arrangement in Register

Figure 1.8.1 shows the relationship between a register's data size and bit numbers.
Nibble (4-bit) data
Byte (8-bit) data
Word (16-bit) data
Long word (32-bit) data
Figure 1.8.1 Data arrangement in register
b31
MSB
16
1.8 Data Arrangement
b3 b0
b7 b0
b15 b0
b0
LSB