SH7125_08 Datasheet, PDF (616/774 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 17 Flash Memory
Bit
31 to
16
Initial
Bit Name Value
R/W

Undefined R/W
15 to 0 F15 to F0 Undefined R/W
Description
Unused
Return 0.
Frequency Set
Set the operating frequency of the CPU. The setting
value must be calculated as the following methods.
1. The operating frequency, which is shown in MHz
units must be rounded in a number to three decimal
places and be shown in a number of two decimal
places.
2. The centuplicated value is converted to the binary
digit and is written to the FPEFEQ parameter
(general register R4). For example, when the
operating frequency of the CPU is 28.882 MHz, the
value is as follows.
 The number to three decimal places of 28.882 is
rounded and the value is thus 28.88.
 The formula that 28.88 × 100 = 2888 is
converted to the binary digit and B'0000, B'1011,
B'0100, B'1000 (H'0B48) is set to R4.
(2.2) Flash user branch address setting parameter (FUBRA: general register R5 of CPU)
This parameter sets the user branch destination address. The user program which has been set
can be executed in specified processing units when programming and erasing.
Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
UA31 UA30 UA29 UA28 UA27 UA26 UA25 UA24 UA23 UA22 UA21 UA20 UA19 UA18 UA17 UA16
Initial value: -
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Bit: 15
UA15
Initial value: -
R/W: R/W
14
UA14
-
R/W
13
UA13
-
R/W
12
UA12
-
R/W
11
UA11
-
R/W
10
UA10
-
R/W
9
UA9
-
R/W
8
UA8
-
R/W
7
UA7
-
R/W
6
UA6
-
R/W
5
UA5
-
R/W
4
UA4
-
R/W
3
UA3
-
R/W
2
UA2
-
R/W
1
UA1
-
R/W
0
UA0
-
R/W
Rev. 4.00 Jul. 25, 2008 Page 596 of 750
REJ09B0243-0400