mc9rs08ka2 Freescale Semiconductor, Inc, mc9rs08ka2 Datasheet - Page 57

• Manufacturer Part Number: mc9rs08ka2
• Description: Rs08 Microcontrollers 8-bit Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

Chapter 8
Central Processor Unit (RS08CPUV1)
8.1
This chapter is a summary of information about the registers, addressing modes, and instruction set of the
RS08 Family CPU. For a more detailed discussion, refer to the RS08 Core Reference Manual, volume 1,
Freescale Semiconductor document order number RS08RMv1.
The RS08 CPU has been developed to target extremely low-cost embedded applications using a
process-independent design methodology, allowing it to keep pace with rapid developments in silicon
processing technology.
The main features of the RS08 core are:
8.2
Figure 8-1
memory map of the microcontroller. They are built directly inside the CPU logic.
Freescale Semiconductor
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Streamlined programmer’s model
Subset of HCS08 instruction set with minor instruction extensions
Minimal instruction set for cost-sensitive embedded applications
New instructions for shadow program counter manipulation, SHA and SLA
New short and tiny addressing modes for code size optimization
16K bytes accessible memory space
Reset will fetch the first instruction from $3FFD
Low-power modes supported through the execution of the STOP and WAIT instructions
Debug and FLASH programming support using the background debug controller module
Illegal address and opcode detection with reset
Introduction
Programmer’s Model and CPU Registers
shows the programmer’s model for the RS08 CPU. These registers are not located in the
MC9RS08KA2 Series Data Sheet, Rev. 3
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