MC9RS08KA2 Features
8-Bit RS08 Central Processor Unit (CPU)
System Protection
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Simplified S08 instruction set with added
high-performance instructions
— LDA, STA, and CLR instructions
support the short addressing mode;
address $0000 to $001F can be
accessed via a single-byte instruction
— ADD, SUB, INC, and DEC instructions
support the tiny addressing mode;
address $0000 to $000F can be
accessed via a single-byte instruction
with reduced instruction cycle
— Shadow PC register instructions: SHA
and SLA
Pending interrupt indication
Index addressing via D[X] and X register
Direct page access to the entire memory
map through paging window
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Computer operating properly (COP) reset
running off bus-independent clock source
Low-voltage detection with reset or stop
wakeup
Peripherals
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MTIM
— 8-bit modulo timer
ACMP
— Analog comparator
— Full rail-to-rail supply operation
— Option to compare to fixed internal
bandgap reference voltage
— Can operate in stop mode
KBI
— Keyboard interrupt ports
— Three KBI ports in 6-pin package
— Five KBI ports in 8-pin package
Development Support
Memory
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On-chip Flash EEPROM
— MC9RS08KA2: 2048 bytes
— MC9RS08KA1: 1024 bytes
63 bytes on-chip RAM
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Background debug system
Breakpoint capability to allow single
breakpoint setting during in-circuit debug
Package Options
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Power-Saving Modes
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Wait and stop
Wakeup from power-saving modes using
real-time interrupt (RTI), KBI, or ACMP
Clock Source
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ICS
— Trimmable 20-MHz internal clock
source
— Up to 10-MHz internal bus operation
— 0.2% trimmable resolution, 2%
deviation over temperature and voltage
range
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6-pin dual flat no lead (DFN) package
— Two general-purpose input/output (I/O)
pins
— One general-purpose input pin
— One general-purpose output pin
8-pin plastic dual in-line pin (PDIP)
package
— Four general-purpose input/output
(I/O) pins
— One general-purpose input pin
— One general-purpose output pin
8-pin narrow body SOIC package
— Four general-purpose input/output
(I/O) pins
— One general-purpose input pin
— One general-purpose output pin
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