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PC912XDP512F0CFVR データシート(PDF) 258 Page - Freescale Semiconductor, Inc

部品番号 PC912XDP512F0CFVR
部品情報  HCS12X Microcontrollers
PDF  1348 Pages
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メーカー  FREESCALE [Freescale Semiconductor, Inc]
ホームページ  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

PC912XDP512F0CFVR データシート(HTML) 258 Page - Freescale Semiconductor, Inc

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Chapter 6 XGATE (S12XGATEV2)
MC9S12XDP512 Data Sheet, Rev. 2.21
258
Freescale Semiconductor
Operation
M[RB, #OFFS5
⇒ RD.L; $00 ⇒ RD.H
M[RB, RI
] ⇒ RD.L; $00 ⇒ RD.H
M[RB, RI]
⇒ RD.L; $00 ⇒ RD.H; RI+1 ⇒ RI;1
RI-1
⇒ RI; M[RS, RI] ⇒ RD.L; $00 ⇒ RD.H
Loads a byte from memory into the low byte of register RD. The high byte is cleared.
CCR Effects
Code and CPU Cycles
LDB
Load Byte from Memory
(Low Byte)
LDB
1.If the same general purpose register is used as index (RI) and destination register (RD), the content of the register will not
be incremented after the data move: M[RB, RI]
⇒ RD.L; $00 ⇒ RD.H
NZ
V
C
————
N:
Not affected.
Z:
Not affected.
V:
Not affected.
C:
Not affected.
Source Form
Address
Mode
Machine Code
Cycles
LDB RD, (RB, #OFFS5)
IDO5
0
1
0
0
0
RD
RB
OFFS5
Pr
LDB RD, (RS, RI)
IDR
0
1
1
0
0
RD
RB
RI
0
0
Pr
LDB RD, (RS, RI+)
IDR+
0
1
1
0
0
RD
RB
RI
0
1
Pr
LDB RD, (RS, -RI)
-IDR
0
1
1
0
0
RD
RB
RI
1
0
Pr



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