YR0K42378FC000BA Renesas Electronics America, YR0K42378FC000BA Datasheet - Page 169
YR0K42378FC000BA
Manufacturer Part Number
YR0K42378FC000BA
Description
KIT EVAL FOR H8S/2378
Manufacturer
Renesas Electronics America
Series
H8®r
Type
MCUr
Datasheet
1.YR0K42378FC000BA.pdf
(1208 pages)
Specifications of YR0K42378FC000BA
Contents
Board
For Use With/related Products
H8S/2378
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 169 of 1208
- Download datasheet (8Mb)
4.8
When accessing word data or longword data, this LSI assumes that the lowest address bit is 0. The
stack should always be accessed by word transfer instruction or longword transfer instruction, and
the value of the stack pointer (SP, ER7) should always be kept even. Use the following
instructions to save registers:
Use the following instructions to restore registers:
Setting SP to an odd value may lead to a malfunction. Figure 4.4 shows an example of operation
when the SP value is odd.
SP
PUSH.W
PUSH.L
POP.W
POP.L
Note: This diagram illustrates an example in which the interrupt control mode is 0, in advanced mode.
Legend:
Usage Note
CCR :
R1L :
PC :
SP :
SP set to H'FFFEFF
Condition code register
Program counter
General register R1L
Stack pointer
Rn
ERn
Rn
ERn
TRAP instruction executed
Figure 4.4 Operation when SP Value Is Odd
(or MOV.W Rn, @-SP)
(or MOV.L ERn, @-SP)
(or MOV.W @SP+, Rn)
(or MOV.L @SP+, ERn)
SP
Data saved above SP
CCR
PC
MOV.B R1L, @-ER7
Rev.7.00 Mar. 18, 2009 page 101 of 1136
SP
Contents of CCR lost
Section 4 Exception Handling
R1L
PC
REJ09B0109-0700
H'FFFEFA
H'FFFEFB
H'FFFEFC
H'FFFEFD
H'FFFEFE
H'FFFEFF
Address
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