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NXP Semiconductors MC9RS08KB4CTG
- Part No.:
- MC9RS08KB4CTG
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC9RS08KB4CTG.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,477
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Product details
Overview
MC9RS08KB4CTG from NXP Semiconductors (formerly Freescale) is an 8-bit RS08 core microcontroller with 4 KB flash, 126-byte RAM, and integrated peripherals including 12-channel 10-bit ADC, analog comparator, TPM timer/PWM, IIC, SCI, and keyboard interrupt module. It operates from 1.8 V to 5.5 V at up to 20 MHz and supports industrial temperature range (–40 °C to 85 °C), targeting low-cost embedded control in sensor interfaces and appliance subsystems.
For engineers reviewing the MC9RS08KB4CTG datasheet, MC9RS08KB4CTG pinout, MC9RS08KB4CTG application, or MC9RS08KB4CTG equivalent, key selection considerations include its QFN-24 package, single-wire background debug interface, on-chip voltage regulator, low-power stop mode (≤7.67 µA), and compatibility with RS08 toolchain and CodeWarrior IDE.
Technical Context
The MC9RS08KB4CTG implements a subset of the HC08 instruction set with added BGND instruction and a single global interrupt vector. Its clock system integrates both an external crystal/ceramic oscillator (31.25 kHz–16 MHz) and an internal frequency-locked-loop (FLL) with precision-trimmed reference enabling ±2% deviation over voltage and temperature.
System protection includes COP watchdog with dedicated 1 kHz low-power oscillator, low-voltage detection with reset/interrupt, illegal opcode/address detection, and flash-block protection. Peripherals are designed for direct sensor interfacing: ADC supports hardware-triggered conversions in stop mode, ACMP operates rail-to-rail with internal bandgap reference, and TPM provides edge- or center-aligned PWM output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit RS08 CPU with BGND instruction and single global interrupt vector - enables compact code footprint and simplified interrupt handling in resource-constrained systems. |
| Flash Memory | 4 KB flash with read/program/erase over full voltage (1.8–5.5 V) and temperature (–40 °C to 85 °C) - supports field firmware updates without external programming voltage. |
| RAM Size | 126-byte RAM - sufficient for real-time sensor data buffering and minimal stack depth in ultra-low-power applications. |
| ADC Resolution | 12-channel, 10-bit ADC with 2.5 µs conversion time and internal temperature sensor (1.7 mV/°C) - enables fast, calibrated thermal monitoring without external components. |
| Supply Current (Stop) | 1.15–7.67 µA at 5 V - allows battery-powered operation for months in wake-on-event applications using RTI, KBI, or ADC triggers. |
| Operating Voltage | 1.8 V to 5.5 V - supports direct connection to Li-ion, alkaline, or regulated 3.3 V/5 V rails without level-shifting. |
| Package | 24-pin QFN (Case 1982-01, 4 mm × 4 mm) - provides compact footprint and thermal performance (θJA = 113 °C/W) for space-constrained PCB layouts. |
Pinout & Package
MC9RS08KB4CTG is housed in a 24-pin QFN package (Case 1982-01) with exposed thermal pad, supporting copper wire bonding per Freescale QFN migration addendum (Rev. 0, 07/2014). The package features 0.5 mm pitch, 4 mm × 4 mm body, and meets industrial thermal requirements (TJMAX = 150 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 1.8–5.5 V supply for core, peripherals, and I/O; requires local decoupling near pin 1. |
| VSS | Ground reference | Digital ground return; must be connected to exposed thermal pad for optimal thermal and EMI performance. |
| PTA0/KBIP0/TPMCH0/ADP0/ACMP+ | Multi-function port A pin 0 | Configurable as keyboard interrupt input, TPM channel 0, ADC channel 0, or ACMP positive input - enables shared signal routing in mixed-signal designs. |
| PTA4/ACMPO/BKGD/MS | Output-only port A pin 4 | ACMP output, single-wire background debug interface, or master select - dedicated debug path eliminates need for JTAG header in production units. |
| PTA5/TCLK/RESET/VPP | Input-only port A pin 5 | External trigger clock input, active-low reset, or high-voltage programming - RESET functionality ensures reliable power-on initialization without external RC network. |
| PTB6/SDA/XTAL | Port B pin 6 | I²C data line or crystal oscillator input - dual-role pin reduces component count when using internal FLL or external crystal timing. |
| PTB7/SCL/EXTAL | Port B pin 7 | I²C clock line or crystal oscillator input - complements PTB6 to form full crystal interface or I²C bus with no external pull-ups required in standard configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Single-wire background debug (BKGD) | Enables in-circuit debugging and flash programming via PTA4 pin - eliminates dedicated debug header and reduces BOM cost by one connector. |
| On-chip voltage regulator | Provides stable core voltage across 1.8–5.5 V input range - simplifies power design by removing need for external LDO in multi-rail systems. |
| ADC operation in stop mode | Allows 10-bit conversions triggered by hardware events while CPU and bus clocks are halted - extends battery life in periodic sensing applications. |
| Configurable I/O drive strength | Programmable high/low drive modes per pin (e.g., 2 mA or 5 mA at 5 V) - optimizes EMI and power consumption for each peripheral interface. |
| Integrated temperature sensor | Calibrated 1.7 mV/°C analog output accessible via ADC channel - delivers system-level thermal monitoring without external sensor or calibration constants. |
Applications
| Smart Appliance Control | Industrial Sensor Node |
|---|---|
Use Scenario: Microcontroller supervises motor speed, temperature, and user interface in washing machine control board. IC Role / Device Role / Timing Role: Primary system controller executing state machine logic, reading thermistor/NTC inputs via ADC, generating PWM for motor driver, and managing button interrupts. Use Value: 4 KB flash accommodates motor control algorithms and UI logic; stop-mode current ≤7.67 µA enables always-on standby with wake-on-button press. | Use Scenario: Battery-powered node monitors pressure, humidity, and ambient temperature in factory environment. IC Role / Device Role / Timing Role: Data acquisition engine sampling sensors every 10 seconds, processing readings, and transmitting via SCI to gateway. Use Value: Integrated 10-bit ADC and temperature sensor eliminate external signal conditioning; 126-byte RAM buffers raw samples before transmission. |
| Consumer Electronics Remote | LED Lighting Driver |
Use Scenario: IR remote control with touch-sensitive keys and low-battery indicator. IC Role / Device Role / Timing Role: Keyboard interrupt handler scanning 8-key matrix, encoding commands, and driving IR LED via TPM PWM. Use Value: 8-channel KBI supports full keypad without external scan logic; 1.8 V operation extends alkaline battery life beyond 12 months. | Use Scenario: Dimmable LED driver for architectural lighting with thermal foldback protection. IC Role / Device Role / Timing Role: Closed-loop brightness controller using ADC to read thermal sensor and adjust TPM PWM duty cycle. Use Value: On-chip 1.7 mV/°C temperature sensor enables accurate thermal derating; 4 KB flash stores dimming curves and fault logs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9RS08KB8CTG | 8 KB flash, 254-byte RAM - double program memory and RAM capacity vs. MC9RS08KB4CTG. | Suitable for applications requiring larger firmware (e.g., USB HID stack, enhanced encryption) or deeper data buffers. | Select when firmware size exceeds 4 KB or real-time data logging requires >126 bytes RAM. |
| MC9RS08KA2CTG | 2 KB flash, 64-byte RAM, 6-pin DFN package - smaller memory and footprint than MC9RS08KB4CTG. | Targeted at ultra-simple functions like LED blink control or basic switch debouncing where minimal code size suffices. | Choose for cost-sensitive, space-constrained designs with <2 KB firmware and no ADC/analog requirements. |
Compared with MC9RS08KB8CTG, MC9RS08KB4CTG offers optimized cost and power for mid-complexity control tasks; versus MC9RS08KA2CTG, it delivers essential analog integration (ADC, ACMP, temperature sensor) missing in the 6-pin variant.
Availability
MC9RS08KB4CTG is available at Aetrix Electronics and suitable for smart appliance control, industrial sensor nodes, consumer electronics remotes, and LED lighting drivers requiring stable component supply across extended product lifecycles.
Supply support for MC9RS08KB4CTG 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 delivering secure, scalable solutions for automotive, industrial, IoT, and mobile applications, with roots in Freescale's embedded MCU heritage.
The MC9RS08KB4CTG belongs to the RS08 family - a cost-optimized 8-bit microcontroller line designed for ultra-low-power, small-footprint embedded control in appliances, sensors, and human-interface devices.
FAQ
What is the maximum operating frequency of the MC9RS08KB4CTG?
The MC9RS08KB4CTG supports a maximum CPU frequency of 20 MHz across its full operating voltage range (1.8 V to 5.5 V) and temperature range (–40 °C to 85 °C). This is achieved using either the internal FLL (up to 10 MHz bus frequency) or external crystal oscillator (up to 16 MHz), with the RS08 core executing instructions at one cycle per bus clock.
Does the MC9RS08KB4CTG support in-circuit debugging?
Yes, the MC9RS08KB4CTG supports single-wire background debug (BKGD) via the PTA4 pin, enabling full in-circuit debugging, flash programming, and breakpoint setting without requiring additional pins or external debug hardware. This capability is documented in the MC9RS08KB12 series reference manual and verified in production silicon.
What are the power-saving modes available on the MC9RS08KB4CTG?
The MC9RS08KB4CTG offers Wait mode (CPU halted, clocks running, full voltage regulation) and Stop mode (CPU and clocks halted, voltage regulator in standby). Wakeup sources include RTI, KBI, ADC, ACMP, SCI, and LVD. Stop mode current is as low as 1.15 µA at 5 V and –40 °C, making it suitable for battery-powered applications.
Can the MC9RS08KB4CTG operate from a 1.8 V supply?
Yes, the MC9RS08KB4CTG is fully specified to operate from 1.8 V to 5.5 V across the industrial temperature range. At 1.8 V, it achieves 20 MHz CPU operation, maintains ADC accuracy (10-bit resolution), and delivers stop-mode current as low as 0.39 µA - enabling direct use with single-cell lithium or alkaline batteries.
What analog peripherals are integrated into the MC9RS08KB4CTG?
The MC9RS08KB4CTG integrates a 12-channel, 10-bit ADC with 2.5 µs conversion time, automatic compare function, and internal bandgap reference; a rail-to-rail analog comparator (ACMP) with selectable internal bandgap reference; and a calibrated on-die temperature sensor (1.7 mV/°C) accessible via ADC channel. All three operate in stop mode for ultra-low-power sensing.
MC9RS08KB4CTG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Series:
- RS08
- Packaging:
- Bulk
- 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:
- 14
- Program Memory Size:
- 4KB (4K 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 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9RS08KB4CTG FAQ
1.How can I place an order for MC9RS08KB4CTG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9RS08KB4CTG 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 MC9RS08KB4CTG reliable?
The price and inventory of MC9RS08KB4CTG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9RS08KB4CTG is usually 5 days.
3.What payment methods are accepted for MC9RS08KB4CTG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9RS08KB4CTG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9RS08KB4CTG?
MC9RS08KB4CTG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9RS08KB4CTG 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 MC9RS08KB4CTG?
For technical support, including MC9RS08KB4CTG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9RS08KB4CTG requirements.
6.How does Aetrix verify that MC9RS08KB4CTG is sourced from the original manufacturer or authorized distributors?
All MC9RS08KB4CTG 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 MC9RS08KB4CTG meets industry standards.
7.What is the process for return or replacement of MC9RS08KB4CTG?
All MC9RS08KB4CTG units undergo pre-shipment inspection (PSI). If there is an issue with MC9RS08KB4CTG, 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 MC9RS08KB4CTG part is unused and in its original packaging.
Return procedure for MC9RS08KB4CTG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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