Overview
●RS08KA microcontrollers (MCUs) are general-purpose 8-bit devices for the ultra-low-end market. Featuring RS08 architecture, RS08KA devices are specifically crafted to be more efficient and cost effective for small memory size microcontrollers. The MC9RS08KA MCU is a general-purpose device that can be used in a wide variety of applications, including high-brightness light-emitting diodes (LEDs), lighting system controls, small handheld devices, toys, AC line voltage monitoring and simple logic, analog drivers and ASIC replacements. It’s ideal for transitioning from solid-state relays and switching systems to a full electronic solution.
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●## Features
●### 8-bit RS08 Central Processor Unit (CPU)
● Up to 10 MHz (bus frequency) RS08 CPU at 1.8 volts for 100 ns minimum instruction time
● Subset of HC08 instruction set with added BGND instruction
● Supports tiny/short address mode
● Index addressing scheme through memory mapped registers X and D[X] within the tiny address range
● 14 byte code-efficient RAM
● X and D[X] mapped within code-efficient tiny address space
● 16 byte code-efficient peripheral register space
● Page window
● Simplified interrupt mechanism
● Subroutine call/return mechanism
●### Integrated Third-Generation Flash
● Extremely fast, byte-writable programming— up to 20 µs/byte
● Offers 1 KB write/erase cycles minimum over temperature
●### Flexible Clock Options
● Internal clock source module containing a frequency-locked loop (FLL) controlled by internal or external reference
● Precision trimming of internal reference allows typical 0.2 percent resolution and +1 percent to -1 percent deviation over operating temperature and voltage
● Internal reference clock can be trimmed from 31.25 kHz to 39.065 kHz, allowing for maxim 10 MHz Bus frequency output
●### Timer
● 2 x 8-bit modulo timer with 8-bit prescaler
● 2-ch., 16-bit timer/PWM
● Allows external timer clock source
●### ADC
● 12-ch., 10-bit resolution
● 2.5 µs conversion time; automatic compare function
● Trigger conversion using RTI counter
●### Analog Comparator
● Option to compare to internal reference
● Option to route comparator output directly to pin
● Allows operation in MCU STOP mode
●### I2C
● Inter-integrated circuit bus module capable of operation up to 100 kbps with maximum bus loading
●### Real-Time Interrupt
● Real-time interrupt trigger with 3-bit prescaler
● Built-in low-power 1 kHz clock source
●### Up to 18 GPIOs
● Software selectable pull-ups on ports when used as input (internal pull-up on RESET)
● Software selectable slew rate control on ports when used on output
● 8-pin keyboard interrupt module with software selectable polarity on edge or edge/level modes
●### System Protection
● Watchdog computer operating properly (COP) reset with option to run from dedicated 1 kHz internal clock source or bus clock
● Low voltage detection with reset or interrupt
● Illegal opcode and illegal address detection with reset
● Security feature for flash
●### Background Debugging System
● On-chip BDM
●### Package
● Pin-compatible with SH, QG family
