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M38500E2 View Datasheet(PDF) - Renesas Electronics

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Description
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M38500E2
Renesas
Renesas Electronics Renesas
M38500E2 Datasheet PDF : 287 Pages
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BEFORE USING THIS MANUAL
This user’s manual consists of the following three chapters. Refer to the chapter appropriate to your conditions,
such as hardware design or software development. Chapter 3 also includes necessary information for
systems development. You must refer to that chapter.
1. Organization
q CHAPTER 1 HARDWARE
This chapter describes features of the microcomputer and operation of each peripheral function.
q CHAPTER 2 APPLICATION
This chapter describes usage and application examples of peripheral functions, based mainly on
setting examples of relevant registers.
q CHAPTER 3 APPENDIX
This chapter includes necessary information for systems development using the microcomputer, such
as the electrical characteristics, the notes, and the list of registers.
For the mask ROM confirmation form, the ROM programming confirmation form, and the mark
specifications, refer to the “Renesas Technology Corp.” Homepage (http://www.renesas.com/en/
rom).
2. Structure of register
The figure of each register structure describes its functions, contents at reset, and attributes as follows :
Bits
(Note 2)
Bit attributes
b7 b6 b5 b4 b3 b2 b1 b0
(Note 1)
Contents immediately after reset release
0
CPU mode register (CPUM) [Address : 3B16]
B
Name
Function
0 Processor mode bits
1
2 Stack page selection bit
b1 b0
0 0 : Single-chip mode
01:
1 0 : Not available
11:
0 : 0 page
1 : 1 page
3 Nothing arranged for these bits. These are write disabled
4 bits. When these bits are read out, the contents are 0.
5 Fix this bit to 0.
6 Main clock (XIN-XOUT) stop bit
0 : Operating
1 : Stopped
7
Internal system clock selection bit
0 : XIN-XOUT selected
1 : XCIN-XCOUT selected
At reset R W
0
0
0
0
0
1
: Bit in which nothing is arranged
: Bit that is not used for control of the corresponding function
Note 1:. Contents immediately after reset release
0....... 0at reset release
1....... 1at reset release
?....... Undefined at reset release
.......Contents determined by option at reset release
Note 2: Bit attributes......... The attributes of control register bits are classified into 3 bytes : read-only, write-
only and read and write. In the figure, these attributes are represented as follows :
R....... Read
...... Read enabled
.......Read disabled
W......Write
..... Write enabled
...... Write disabled
 

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