Description

The MC9RS08KA2CSC Series microcontroller unit (MCU) is a very affordable, low pin count device for toys, tiny geometry applications, and home appliances. An extremely compact and highly effective RS08 CPU core, 63 bytes of RAM, 2K bytes of flash memory, an 8-bit modulo timer, a keyboard interrupt, and an analog comparator are all standard on-chip modules that make up this device. The gadget is offered in tiny 6- and 8-pin packaging.

Features

Power-Saving Modes

• Wait and stop

• Wakeup from power-saving modes using real-time interrupt (RTI), KBI, or ACMP

Clock Source

• 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

8-Bit RS08 Central Processor Unit (CPU)

• 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

Memory

• On-chip Flash EEPROM

— MC9RS08KA2: 2048 bytes

• 63 bytes on-chip RAM

Applications

• Light sensing & controlling devices

• Temperature sensing and controlling devices

• Fire detection & safety devices

• Industrial instrumentation devices

• Process control devices