DEMO9S08EL32 Freescale Semiconductor, DEMO9S08EL32 Datasheet - Page 103

• Manufacturer Part Number: DEMO9S08EL32
• Description: BOARD DEMO FOR 9S08 EL MCU
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S08EL32

• Contents: Evaluation Board
• Processor To Be Evaluated: MC9S08EL32
• Data Bus Width: 8 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 12 V
• Silicon Manufacturer: Freescale
• Core Architecture: HCS08
• Core Sub-architecture: HCS08
• Silicon Core Number: MC9S08
• Silicon Family Name: S08EL
• Rohs Compliant: Yes
• For Use With/related Products: MC9S08EL32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.4.5
The BGND instruction is new to the HCS08 compared to the M68HC08. BGND would not be used in
normal user programs because it forces the CPU to stop processing user instructions and enter the active
background mode. The only way to resume execution of the user program is through reset or by a host
debug system issuing a GO, TRACE1, or TAGGO serial command through the background debug
interface.
Software-based breakpoints can be set by replacing an opcode at the desired breakpoint address with the
BGND opcode. When the program reaches this breakpoint address, the CPU is forced to active
background mode rather than continuing the user program.
7.5
Table 7-2
shows operand construction, execution time in internal bus clock cycles, and cycle-by-cycle details for
each addressing mode variation of each instruction.
Freescale Semiconductor
ADC #opr8i
ADC opr8a
ADC opr16a
ADC oprx16,X
ADC oprx8,X
ADC ,X
ADC oprx16,SP
ADC oprx8,SP
ADD #opr8i
ADD opr8a
ADD opr16a
ADD oprx16,X
ADD oprx8,X
ADD ,X
ADD oprx16,SP
ADD oprx8,SP
AIS #opr8i
AIX #opr8i
AND #opr8i
AND opr8a
AND opr16a
AND oprx16,X
AND oprx8,X
AND ,X
AND oprx16,SP
AND oprx8,SP
Source
Form
HCS08 Instruction Set Summary
provides a summary of the HCS08 instruction set in all possible addressing modes. The table
BGND Instruction
Add with Carry
A ← (A) + (M) + (C)
Add without Carry
A ← (A) + (M)
Add Immediate Value (Signed) to
Stack Pointer
SP ← (SP) + (M)
Add Immediate Value (Signed) to
Index Register (H:X)
H:X ← (H:X) + (M)
Logical AND
A ← (A) & (M)
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
Table 7-2. Instruction Set Summary (Sheet 1 of 9)
Operation
IMM
DIR
EXT
IX2
IX1
IX
SP2
SP1
IMM
DIR
EXT
IX2
IX1
IX
SP2
SP1
IMM
IMM
IMM
DIR
EXT
IX2
IX1
IX
SP2
SP1
Object Code
9E D9
9E E9
9E DB
9E EB
9E D4
9E E4
A9
B9
C9
D9
E9
F9
AB
BB
CB
DB
EB
FB
A7 ii
AF ii
A4
B4
C4
D4
E4
F4
ii
dd
hh ll
ee ff
ff
ee ff
ff
ii
dd
hh ll
ee ff
ff
ee ff
ff
ii
dd
hh ll
ee ff
ff
ee ff
ff
Chapter 7 Central Processor Unit (S08CPUV3)
2
3
4
4
3
3
5
4
2
3
4
4
3
3
5
4
2
2
2
3
4
4
3
3
5
4
pp
rpp
prpp
prpp
rpp
rfp
pprpp
prpp
pp
rpp
prpp
prpp
rpp
rfp
pprpp
prpp
pp
pp
pp
rpp
prpp
prpp
rpp
rfp
pprpp
prpp
Cyc-by-Cyc
Details
V 1 1 H I N Z C
– 1 1 – – – – –
– 1 1 – – – – –
0 1 1 – –
1 1
1 1
on CCR
Affect
–
–
103
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