Design Files
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8-bit General Purpose Ultra-Low-End Market KA MCUs
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.
Product Details
Block Diagram
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
- 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
Part numbers include: MC9RS08KA1CDB, MC9RS08KA1CPC, MC9RS08KA1CSC, MC9RS08KA2CDB, MC9RS08KA2CPC, MC9RS08KA2CSC, MC9RS08KA4CPG, MC9RS08KA4CTG, MC9RS08KA4CWG, MC9RS08KA4CWJ, MC9RS08KA8CPG, MC9RS08KA8CTG, MC9RS08KA8CWG, MC9RS08KA8CWJ.
Complementary Products
RS08KA Family Members
| Features | RS08KA1 | RS08KA2 | RS08KA4 | RS08KA8 |
| BUS Speed (MHz) | 10 | 10 | 10 | 10 |
| FLASH (KBytes) | 1 | 2 | 4 | 8 |
| RAM (Bytes) | 63 | 63 | 126 | 254 |
| GPIO | 2 / 4 | 2 / 4 | 14 / 18 | 14 / 18 |
| Keyboard Interrupt | 3 / 5 | 3 / 5 | 8 | 8 |
| ADC Channels | None | None | 12 | 12 |
| ADCMP Module | Yes | Yes | Yes | Yes |
| Serial Comunications | None | None | I2C | I2C |
| MTIM Module | Yes | Yes | Yes | Yes |
| Timers | None | None | One Timer | One Timer |
| Package | 6-pin DFN8-Pin SOIC/PDIP | 6-pin DFN8-Pin SOIC/PDIP | 16-Pin SOIC/PDIP20-Pin SOIC/PDIP | 16-Pin SOIC/PDIP20-Pin SOIC/PDIP |
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Documentation
Quick reference to our documentation types.
1-5 of 51 documents
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Reference Manual
MC9RS08KA8, MC9RS08KA4 - Reference ManualFeatured
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Data Sheet
MC9RS08KA2, MC9RS08KA1 - Data Sheet
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Data Sheet
SC9RS08KA1 - Data Sheet
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Data Sheet
MC9RS08KA8 Series - Data Sheet
Design Resources
Hardware
Quick reference to our
board types.
1-5 of 7 hardware offerings
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Emulators, Probes, and ProgrammersUniversal Multilink Development InterfaceFeatured
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Evaluation and Development BoardsDEMO9RS08KA2 Demonstration BoardFeatured
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Evaluation and Development BoardsDemonstration Board for MC9RS08KA8Featured
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Emulators, Probes, and ProgrammersPEmicro Cyclone programmer
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Emulators, Probes, and ProgrammersPEmicro Cyclone FX programmer
Software
Quick reference to our software types.
1-5 of 9 software files
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Development IDEs and Build Tools
CodeWarrior® for Microcontrollers (Classic IDE) - RS08/HC(S)08, ColdFire V1 v6.3Featured
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Development IDEs and Build Tools
CodeWarrior® for MCUs (Eclipse IDE) - ColdFire®, 56800/E DSC, Qorivva® 56xx, RS08/S08, S12Z - 11.1Featured
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Configuration Tools
Processor Expert® Software – Component Development Environment v1.0.4
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Additional software available. View our featured partner solutions.
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Configuration Tools
Embedded Component: NXPAnalogComp
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Application Example Software
Proximity Sensing Software
Note: For better experience, software downloads are recommended on desktop.
Engineering Services
To get further assistance directly from NXP, please see our Engineering Services.
4 engineering services
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Independent Design House (IDH)
Hardware Design Services
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Independent Design House (IDH)
Hardware/Software Engineering Services
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Independent Design House (IDH)
Hardware/Software development and testing
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Independent Design House (IDH)
Embedded Software Design
To find additional partner offerings that support this product, visit our Partner Marketplace.