mc9s08rd60fj Freescale Semiconductor, Inc, mc9s08rd60fj Datasheet - Page 74

• Manufacturer Part Number: mc9s08rd60fj
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Central Processor Unit (CPU)
6.2 Features
Features of the HCS08 CPU include:
6.3 Programmer’s Model and CPU Registers
Figure 6-1
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Object code fully upward-compatible with M68HC05 and M68HC08 Families
All registers and memory are mapped to a single 64-Kbyte address space
16-bit stack pointer (any size stack anywhere in 64-Kbyte address space)
16-bit index register (H:X) with powerful indexed addressing modes
8-bit accumulator (A)
Many instructions treat X as a second general-purpose 8-bit register
Seven addressing modes:
– Inherent — Operands in internal registers
– Relative — 8-bit signed offset to branch destination
– Immediate — Operand in next object code byte(s)
– Direct — Operand in memory at $0000–$00FF
– Extended — Operand anywhere in 64-Kbyte address space
– Indexed relative to H:X — Five submodes including auto increment
– Indexed relative to SP — Improves C efficiency dramatically
Memory-to-memory data move instructions with four address mode combinations
Overflow, half-carry, negative, zero, and carry condition codes support conditional branching on
the results of signed, unsigned, and binary-coded decimal (BCD) operations
Efficient bit manipulation instructions
Fast 8-bit by 8-bit multiply and 16-bit by 8-bit divide instructions
STOP and WAIT instructions to invoke low-power operating modes
shows the five CPU registers. CPU registers are not part of the memory map.
MC9S08RC/RD/RE/RG
Freescale Semiconductor