mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 258

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 6 XGATE (S12XGATEV2)
LDB
Operation
M[RB, #OFFS5
M[RB, RI
M[RB, RI]
RI-1
Loads a byte from memory into the low byte of register RD. The high byte is cleared.
CCR Effects
Code and CPU Cycles
258
N:
Z:
V:
C:
LDB RD, (RB, #OFFS5)
LDB RD, (RS, RI)
LDB RD, (RS, RI+)
LDB RD, (RS, -RI)
—
N
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]
Not affected.
Not affected.
Not affected.
Not affected.
—
Z
RI; M[RS, RI]
—
V
Source Form
RD.L; $00
RD.L; $00
—
C
RD.L; $00
RD.L; $00
RD.H
RD.H; RI+1
RD.H
Address
MC9S12XDP512 Data Sheet, Rev. 2.17
Mode
IDO5
IDR+
-IDR
IDR
Load Byte from Memory
RD.H
RI;
RD.L; $00
0
0
0
0
(Low Byte)
1
1
1
1
1
0
1
1
1
0
0
0
0
RD.H
0
0
0
0
Machine Code
RD
RD
RD
RD
RB
RB
RB
RB
RI
RI
RI
Freescale Semiconductor
OFFS5
LDB
0
0
1
0
1
0
Cycles
Pr
Pr
Pr
Pr