SH7764 Datasheet, PDF (87/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 2 Programming Model
Section 2 Programming Model
The programming model of the SH-4A is explained in this section. The SH-4A has registers and
data formats as shown below.
2.1 Data Formats
The data formats supported in the SH-4A are shown in figure 2.1.
Byte (8 bits)
Word (16 bits)
31
Longword (32 bits)
Single-precision floating-point (32 bits)
31 30
22
se
63 62
51
Double-precision floating-point (64 bits) s e
f
[Legend]
s :Sign field
e :Exponent field
f :Fraction field
Figure 2.1 Data Formats
70
15
0
0
0
f
0
Rev. 1.00 Nov. 22, 2007 Page 31 of 1692
REJ09B0360-0100