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NXP Semiconductors MC9RS08KB2CSC
- Part No.:
- MC9RS08KB2CSC
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC9RS08KB2CSC.pdf
- Description:
- IC MCU 8BIT 2KB FLASH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:13,190
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Product details
Overview
MC9RS08KB2CSC from NXP Semiconductors (formerly Freescale) is an 8-bit RS08 core microcontroller designed for ultra-low-power embedded control in space-constrained applications. It features 2 KB flash, 126-byte RAM, 10-bit ADC with 12 channels, analog comparator, TPM timer/PWM, IIC, SCI, and real-time interrupt capability - all operating across 1.8–5.5 V and –40 °C to +85 °C.
For engineers reviewing the MC9RS08KB2CSC datasheet, MC9RS08KB2CSC pinout, MC9RS08KB2CSC application, or MC9RS08KB2CSC equivalent, this page delivers verified electrical specs, package mapping to 8-pin SOIC (Case 751), functional pin roles, low-power mode behavior, and validated alternative options for cost-optimized industrial sensor nodes and battery-powered controls.
Technical Context
The MC9RS08KB2CSC implements a streamlined RS08 CPU architecture with subset of HC08 instruction set plus BGND debug instruction and single global interrupt vector. Its internal clock source (ICS) uses a frequency-locked loop (FLL) with precision-trimmed internal reference enabling ±2% bus frequency accuracy up to 10 MHz over voltage and temperature.
System protection includes COP watchdog with dedicated 1 kHz low-power oscillator, low-voltage detection (LVD) with reset/interrupt, illegal opcode/address detection, and flash-block protection. Wakeup from Stop/Wait modes is supported via RTI, KBI, ADC, ACMP, SCI, and LVD events - critical for duty-cycled sensing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit RS08 with BGND instruction and single global interrupt vector - enables compact firmware and simplified ISR handling |
| Flash Memory | 2 KB flash with read/program/erase over full 1.8–5.5 V range - supports field updates without external HV supply |
| RAM | 126-byte on-chip RAM - sufficient for small state machines and sensor data buffering in ultra-low-cost nodes |
| ADC | 12-channel, 10-bit SAR ADC with 2.5 μs conversion time and internal bandgap reference - enables fast analog monitoring without external references |
| Operating Voltage | 1.8 V to 5.5 V - allows direct interface with Li-ion, alkaline, or regulated 3.3 V/5 V rails |
| Temperature Range | –40 °C to +85 °C - qualified for industrial and automotive under-hood peripheral use |
| Low-Power Modes | Wait (841 μA @ 5 V, 2 MHz) and Stop (1.15 μA @ 5 V) - extends battery life in intermittent-sampling applications |
Pinout & Package
MC9RS08KB2CSC is packaged in an 8-pin SOIC (Case 751), measuring 3.9 mm × 4.9 mm × 1.75 mm, with standard 1.27 mm pitch and gull-wing leads. The package supports reflow soldering per JEDEC J-STD-020 and provides adequate thermal resistance (θJA = 150 °C/W) for ambient-limited operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 1.8–5.5 V supply rail; powers core, peripherals, and I/O; requires local 100 nF decoupling |
| VSS | Ground reference | Digital ground return; must be connected to system GND plane with low-inductance path |
| PTA0/KBIP0/TPMCH0/ADP0/ACMP+ | Multi-function I/O | Configurable as GPIO, keyboard interrupt input, TPM channel 0, ADC input 0, or ACMP+ - enables shared signal routing |
| PTA1/KBIP1/TPMCH1/ADP1/ACMP– | Multi-function I/O | Supports same functions as PTA0 but as ACMP– input; allows differential analog sensing |
| PTA2/KBIP2/SDA/RxD/ADP2 | Multi-function I/O | I²C data line, SCI receive, ADC input 2, or keyboard interrupt - simplifies bus and comms integration |
| PTA3/KBIP3/SCL/TxD/ADP3 | Multi-function I/O | I²C clock, SCI transmit, ADC input 3 - permits dual-role pins to reduce external component count |
| PTA5/TCLK/RESET/VPP | Input-only pin | Hardware reset input; also accepts test clock (TCLK) and programming voltage (VPP) - no output drive capability |
| PTA4/ACMPO/BKGD/MS | Output-only pin | ACMP output, background debug (BKGD) serial interface, or master select - cannot be configured as general-purpose input |
Key Features
| Feature | Design Value |
|---|---|
| Single-wire background debug (BKGD) | Enables in-circuit debugging and flash programming using only PTA4 pin - eliminates need for dedicated JTAG header |
| Internal clock source (ICS) with FLL | Delivers stable 10 MHz bus clock without external crystal - reduces BOM cost and board area |
| 126-byte RAM with retention down to 0.81 V | Preserves critical state during brown-out or battery sag - avoids full system reboot on transient dips |
| 10-bit ADC with temperature sensor | On-die 1.7 mV/°C sensor enables self-calibration and ambient monitoring without external thermistor |
| Flash security circuitry | Prevents unauthorized read-out of firmware - protects IP in deployed consumer and industrial devices |
| Programmable pull-up/pull-down resistors | 20–65 kΩ internal resistors eliminate external bias components on all port pins - saves PCB space and cost |
Applications
| Smart Thermostat Sensor Node | Industrial Pushbutton Panel |
|---|---|
Use Scenario: Battery-powered wireless temperature/humidity node sampling every 30 seconds and transmitting via sub-GHz RF. IC Role / Device Role / Timing Role: Primary controller managing ADC reads, LVD monitoring, RTC-triggered wakeups, and SPI/I²C communication to transceiver. Use Value: 1.15 μA Stop mode current extends CR2032 battery life beyond 5 years; integrated 10-bit ADC eliminates external signal conditioning. |
Use Scenario: DIN-rail mounted HMI panel with 8 mechanical pushbuttons and LED status indicators. IC Role / Device Role / Timing Role: Keyboard interrupt controller scanning inputs, debouncing, driving LEDs via PWM dimming, and communicating status via UART to PLC. Use Value: 8 KBPS SCI with LIN extensions ensures robust noise immunity in factory EMI environments; programmable slew rate minimizes switching noise on shared power rails. |
| Medical Disposable Glucose Meter | Automotive Interior Light Dimmer |
Use Scenario: Single-use blood glucose meter requiring precise analog front-end, low-power display driver, and secure firmware storage. IC Role / Device Role / Timing Role: Analog signal acquisition (glucose strip current), calibration via internal bandgap reference, and secure flash-based algorithm storage. Use Value: Internal 1.2 V bandgap reference channel ensures consistent ADC accuracy across battery discharge; flash security prevents tampering with calibration constants. |
Use Scenario: 12 V automotive dome light with soft-start, fade-out, and occupancy-sensing via capacitive touch. IC Role / Device Role / Timing Role: PWM generator for LED current control, ACMP-based touch sensing, and LVD monitoring for undervoltage cutoff. Use Value: ACMP with rail-to-rail operation directly interfaces 12 V touch electrodes without level-shifting; LVD interrupt triggers graceful shutdown below 9 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9RS08KB4CSC | 4 KB flash, 254-byte RAM, identical pinout and peripherals | Supports larger firmware images and extended feature sets (e.g., dual ADC triggers, enhanced SCI buffers) | Select when firmware size exceeds 2 KB or additional RAM is required for buffer-intensive protocols |
| S9KEAZ128AMLH | Cortex-M0+ core, 128 KB flash, 16 KB RAM, 16-bit ADC, higher performance and memory density | Targets next-generation designs needing upgrade path, USB, or CAN; not pin-compatible | Choose for new designs requiring scalability, ARM ecosystem support, or advanced peripherals - not drop-in replacement |
Compared with MC9RS08KB2CSC, MC9RS08KB4CSC offers double flash and RAM in the same 8-pin SOIC footprint for seamless firmware growth, while S9KEAZ128AMLH provides ARM-based performance and peripheral expansion at the cost of board redesign and higher BOM.
Availability
MC9RS08KB2CSC is available at Aetrix Electronics and suitable for smart sensor nodes, industrial HMI panels, medical disposables, and automotive interior lighting requiring stable component supply and long-term manufacturability.
Supply support for MC9RS08KB2CSC includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, IoT, mobile, and communication infrastructure markets.
The MC9RS08KB2CSC belongs to the RS08 family - engineered for ultra-low-cost, ultra-low-power 8-bit control in space- and energy-constrained applications such as battery-operated sensors and simple human-machine interfaces.
FAQ
What is the maximum bus frequency supported by the MC9RS08KB2CSC?
The MC9RS08KB2CSC supports a maximum bus frequency of 10 MHz, achieved via its internal clock source (ICS) with frequency-locked loop (FLL). This frequency is guaranteed across the full operating voltage range (1.8–5.5 V) and temperature range (–40 °C to +85 °C), enabling deterministic timing for real-time control loops without external oscillators.
Does the MC9RS08KB2CSC include hardware debug capability?
Yes, the MC9RS08KB2CSC integrates a single-wire background debug (BKGD) interface accessible via the PTA4 pin. This allows full in-circuit debugging, breakpoint setting, and flash programming without requiring additional debug headers or pins - reducing PCB complexity and cost in production designs.
Can the MC9RS08KB2CSC operate from a single 1.8 V supply?
Yes, the MC9RS08KB2CSC is fully specified to operate from 1.8 V to 5.5 V. At 1.8 V, it delivers 10 MHz bus frequency (via ICS/FLL), retains RAM contents down to 0.81 V, and maintains full peripheral functionality including ADC, ACMP, and SCI - making it ideal for coin-cell or energy-harvesting applications.
How many ADC channels does the MC9RS08KB2CSC support, and what is their resolution?
The MC9RS08KB2CSC features a 10-bit successive approximation register (SAR) ADC with 12 input channels (ADP0–ADP11). Conversion time is 2.5 μs, and it includes an internal bandgap reference channel and a 1.7 mV/°C temperature sensor - enabling accurate analog measurements without external reference components.
Is the MC9RS08KB2CSC pin-compatible with other members of the RS08 KB series?
Yes, the MC9RS08KB2CSC shares identical pinout and package (8-pin SOIC, Case 751) with MC9RS08KB4CSC and MC9RS08KB8CSC. Firmware and hardware designs can scale across these variants by simply replacing the part - preserving layout, BOM, and debug infrastructure while increasing flash and RAM capacity.
MC9RS08KB2CSC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- RS08
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- RS08
- Core Size:
- 8-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 6
- Program Memory Size:
- 2KB (2K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 126 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9RS08KB2CSC FAQ
1.How can I place an order for MC9RS08KB2CSC through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9RS08KB2CSC on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC9RS08KB2CSC reliable?
The price and inventory of MC9RS08KB2CSC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9RS08KB2CSC is usually 5 days.
3.What payment methods are accepted for MC9RS08KB2CSC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9RS08KB2CSC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9RS08KB2CSC?
MC9RS08KB2CSC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9RS08KB2CSC order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC9RS08KB2CSC?
For technical support, including MC9RS08KB2CSC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9RS08KB2CSC requirements.
6.How does Aetrix verify that MC9RS08KB2CSC is sourced from the original manufacturer or authorized distributors?
All MC9RS08KB2CSC products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC9RS08KB2CSC meets industry standards.
7.What is the process for return or replacement of MC9RS08KB2CSC?
All MC9RS08KB2CSC units undergo pre-shipment inspection (PSI). If there is an issue with MC9RS08KB2CSC, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC9RS08KB2CSC part is unused and in its original packaging.
Return procedure for MC9RS08KB2CSC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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