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HCS12 датащи(PDF) 278 Page - Freescale Semiconductor, Inc

номер детали HCS12
подробное описание детали  HCS12 Microcontrollers
PDF  452 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

HCS12 датащи(HTML) 278 Page - Freescale Semiconductor, Inc

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Instruction Glossary
S12CPUV2 Reference Manual, Rev. 4.0
278
Freescale Semiconductor
Operation:
If r1 bit 7 = 0, then $00 : (r1)
⇒ r2
If r1 bit 7 = 1, then $FF : (r1)
⇒ r2
Description:
This instruction is an alternate mnemonic for the TFR r1,r2 instruction,
where r1 is an 8-bit register and r2 is a 16-bit register. The result in r2 is the
16-bit sign extended representation of the original two’s complement
number in r1. The content of r1 is unchanged in all cases except that of SEX
A,D (D is A : B).
SEX
Sign Extend into 16-Bit Register
SEX
CCR Details:
S
X
HIN
Z
V
C
––––––––
Source Form
Address
Mode
Object Code(1)
1. Legal coding for eb is summarized in the following table. Columns represent the high-order source digit. Rows represent
the low-order destination digit (MSB is a don’t care). Values are in hexadecimal.
Access Detail
HCS12
M68HC12
SEX abc,dxys
INH
B7 eb
P
P
01
2
3
sex:A
⇒ TMP2
sex:B
⇒ TMP2
sex:CCR
⇒ TMP2
4
sex:A
⇒ D
SEX A,D
sex:B
⇒ D
SEX B,D
sex:CCR
⇒ D
SEX CCR,D
5
sex:A
⇒ X
SEX A,X
sex:B
⇒ X
SEX B,X
sex:CCR
⇒ X
SEX CCR,X
6
sex:A
⇒ Y
SEX A,Y
sex:B
⇒ Y
SEX B,Y
sex:CCR
⇒ Y
SEX CCR,Y
7
sex:A
⇒ SP
SEX A,SP
sex:B
⇒ SP
SEX B,SP
sex:CCR
⇒ SP
SEX CCR,SP



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