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SH7101 데이터시트(PDF) 49 Page - Renesas Technology Corp

부품명 SH7101
상세설명  32-Bit RISC Microcomputer
PDF  486 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
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SH7101 데이터시트(HTML) 49 Page - Renesas Technology Corp

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2. CPU
Rev.2.00 Sep. 27, 2007 Page 15 of 448
REJ09B0394-0200
2.2.4
Initial Values of Registers
Table 2.1 lists the values of the registers after reset.
Table 2.1
Initial Values of Registers
Classification
Register
Initial Value
R0 to R14
Undefined
General registers
R15 (SP)
Value of the stack pointer in the vector
address table
SR
Bits I3 to I0 are 1111 (H'F), reserved bits
are 0, and other bits are undefined
GBR
Undefined
Control registers
VBR
H'00000000
System registers
MACH, MACL, PR
Undefined
PC
Value of the program counter in the vector
address table
2.3
Data Formats
2.3.1
Data Format in Registers
Register operands are always longwords (32 bits). If the size of memory operand is a byte (8 bits)
or a word (16 bits), it is changed into a longword by expanding the sign-part when loaded into a
register.
31
0
Longword
Figure 2.2 Data Format in Registers



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