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NXP Semiconductors MC9RS08KA8CTGR
- Part No.:
- MC9RS08KA8CTGR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC9RS08KA8CTGR.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,991
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Product details
Overview
MC9RS08KA8CTGR from NXP Semiconductors (formerly Freescale) is an 8-bit RS08-core microcontroller with 8 KB flash, 254-byte RAM, and integrated peripherals including 10-bit ADC, TPM timer, I²C, dual 8-bit timers, ACMP, and KBI. It operates from 1.8 V to 5.5 V at up to 10 MHz bus frequency across –40°C to +85°C, targeting low-power embedded control in space-constrained industrial sensors and appliance subsystems.
For engineers reviewing the MC9RS08KA8CTGR datasheet, MC9RS08KA8CTGR pinout, MC9RS08KA8CTGR application, or MC9RS08KA8CTGR equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options - all grounded in Rev. 4 (June 2009) official documentation and confirmed 16-pin TSSOP (Case 948F) packaging.
Technical Context
The MC9RS08KA8CTGR implements a subset of the HC08 instruction set augmented with BGND for single-wire background debug, and uses a frequency-locked-loop (FLL)-based Internal Clock Source (ICS) enabling precise 0.2% resolution and ≤2% deviation over voltage/temperature. Its clock system supports both internal (31.25 kHz–20 MHz) and external (31.25 kHz–5 MHz crystal/resonator or 31.25 kHz–40 MHz square wave) sources.
Peripherals are tightly integrated into the RS08 architecture: the 12-channel 10-bit ADC achieves 2.5 μs conversion and functions fully in STOP mode; the analog comparator (ACMP) supports rail-to-rail operation and internal bandgap reference; and the TPM module provides two channels configurable as input capture, output compare, or edge-/center-aligned PWM - all accessible via remappable pins on the 16-pin TSSOP variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RS08 8-bit CPU with HC08 instruction subset + BGND debug instruction; enables ultra-low-power in-circuit debugging with single breakpoint support. |
| Memory | 8 KB flash (read/program/erase over full voltage/temperature range); 254-byte RAM; flash block protection and security circuitry prevent unauthorized access. |
| Operating Voltage | 1.8 V to 5.5 V supply; supports direct battery operation (e.g., 2×AA, Li-ion) without external regulators in many applications. |
| Bus Frequency | Up to 10 MHz (FLL-trimmed); enables responsive real-time control while maintaining sub-5 μA STOP-mode current at 1.8 V. |
| ADC | 12-channel, 10-bit SAR ADC with 2.5 μs conversion time; 8 channels available on 16-pin TSSOP; operates down to 2.7 V and in STOP mode. |
| Power Modes | WAIT and STOP modes; wakeup via RTI (1 kHz internal), KBI, or ACMP; STOP current = 1.5 μA typical at 1.8 V/25°C. |
| Package | 16-pin TSSOP (Case 948F); 4.4 mm × 5.0 mm footprint; surface-mount compatible with standard reflow profiles. |
Pinout & Package
MC9RS08KA8CTGR is packaged in a 16-pin TSSOP (Case 948F) with 0.65 mm pitch, optimized for compact PCB layouts and automated assembly. Pin functions are defined per Table 1 and Figure 3 of Rev. 4 datasheet, with all port pins supporting configurable pullup/pulldown, slew rate, and drive strength.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0 / KBIP0 / TPMCH0 / ADP0 / ACMP+ | Port A bit 0, keyboard interrupt 0, TPM channel 0, ADC channel 0, ACMP positive input | Multi-function I/O enabling shared use across timing, sensing, and analog comparison; ACMP+ allows differential measurement against internal bandgap. |
| PTA1 / KBIP1 / TPMCH1 / ADP1 / ACMP– | Port A bit 1, keyboard interrupt 1, TPM channel 1, ADC channel 1, ACMP negative input | Paired with PTA0 for rail-to-rail analog comparison; also serves as TPM input capture or PWM output in same physical pin. |
| PTA2 / KBIP2 / SDA / ADP2 | Port A bit 2, keyboard interrupt 2, I²C data line, ADC channel 2 | Enables I²C slave communication while retaining ADC and KBI capability; software-configurable function selection avoids hardware multiplexing conflicts. |
| PTA3 / KBIP3 / SCL / ADP3 | Port A bit 3, keyboard interrupt 3, I²C clock line, ADC channel 3 | I²C master/slave interface co-located with ADC inputs; supports sensor interfacing (e.g., temperature, humidity) with minimal external components. |
| PTA4 / ACMPO / BKGD / MS | Port A bit 4, ACMP output, background debug, master select | Dedicated BKGD pin enables single-wire debug without dedicated JTAG header; ACMPO provides immediate comparator decision for fast response loops. |
| PTA5 / TCLK / RESET / VPP | Port A bit 5, test clock, reset input, programming voltage | Combines reset assertion, debug clock, and flash programming voltage (VPP) - simplifies production programming and field updates. |
| PTB0–PTB3 / KBIP4–KBIP7 / ADP4–ADP7 | Port B bits 0–3, keyboard interrupts 4–7, ADC channels 4–7 | Four dedicated KBI-capable inputs with edge-detect logic; ideal for membrane keypad scanning or pushbutton interfaces in consumer appliances. |
| VDD / VSS | Power supply / ground | Single-supply operation; internal voltage regulator ensures stable core voltage across wide input range; no external LDO required. |
Key Features
| Feature | Design Value |
|---|---|
| Single-Wire Background Debug (BKGD) | Enables full in-circuit debugging (breakpoint, memory read/write) using only PTA4 - eliminates need for dedicated debug headers and saves board space. |
| FLL-Based Internal Clock Source (ICS) | Delivers 0.2% frequency resolution and ≤2% deviation over voltage/temperature; eliminates external crystal for cost-sensitive designs while maintaining timing accuracy. |
| STOP-Mode Peripheral Operation | ADC, ACMP, RTI, and KBI remain functional during STOP mode; enables ultra-low-power wake-on-event sensing (e.g., door open, temperature threshold) with <2 μA total current. |
| Configurable I/O Drive Strength | High-drive (10 mA @ 5 V) and low-drive (2 mA @ 5 V) modes per pin; reduces EMI and power consumption when driving LEDs or small relays directly. |
| Integrated Security Circuitry | Prevents unauthorized readout of flash and RAM contents; protects firmware IP in production units deployed in unsecured environments. |
Applications
| Smart Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Microcontroller in washing machine control panel managing motor sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Primary system controller executing real-time motor PWM, reading analog pressure/temperature sensors via ADC, and scanning membrane keypad via KBI. Use Value: 8 KB flash stores complex wash cycle logic; STOP-mode KBI wakeup reduces standby power to <2 μA; integrated ACMP replaces discrete comparator for lid-switch detection. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and ambient light in factory settings. IC Role / Device Role / Timing Role: Low-power data acquisition node performing periodic ADC conversions, processing readings, and transmitting via I²C to gateway MCU. Use Value: 1.5 μA STOP current extends 2×AA battery life beyond 5 years; 10-bit ADC resolves 0.1°C temperature steps; I²C interface minimizes interconnect wiring. |
| Consumer Electronics Remote | LED Lighting Driver |
|
Use Scenario: IR remote control with button matrix, LED feedback, and low-battery indication. IC Role / Device Role / Timing Role: Input scanner (KBI), IR carrier generator (TPM PWM), and status indicator driver (GPIO with configurable drive). Use Value: 8-channel KBI handles 8-button matrix without external logic; TPM generates precise 38 kHz IR carrier; high-drive GPIO drives indicator LED directly at 10 mA. |
Use Scenario: Dimmable LED driver for architectural lighting with analog dimming input and thermal foldback. IC Role / Device Role / Timing Role: Analog input conditioner (ACMP + ADC), PWM dimming generator (TPM), and thermal shutdown supervisor (LVD + ACMP). Use Value: ACMP compares thermistor voltage to internal 1.208 V bandgap for accurate thermal cutoff; TPM delivers smooth 100 Hz–20 kHz PWM dimming; LVD triggers safe shutdown below 1.8 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 |
|---|---|---|---|
| MC9RS08KA4CTGR | 4 KB flash, 126-byte RAM, identical core/peripherals/package; lower memory capacity limits firmware complexity. | Suitable for simpler control tasks (e.g., basic timer, single-sensor readout) where 8 KB flash is unnecessary. | Select when cost sensitivity outweighs future firmware scalability needs; shares same pinout and debug interface. |
| S08AW60ACLJ | Enhanced S08 core, 60 KB flash, 4 KB RAM, CAN interface, 48-pin LQFP; higher performance, larger memory, automotive qualification. | Targets automotive body electronics (e.g., door modules) requiring CAN communication and extended temperature range (–40°C to +125°C). | Choose for systems needing CAN connectivity, larger code space, or AEC-Q100 compliance; not pin-compatible with MC9RS08KA8CTGR. |
Compared with MC9RS08KA8CTGR, MC9RS08KA4CTGR offers identical low-power architecture and pin compatibility at reduced memory cost, while S08AW60ACLJ provides automotive-grade CAN capability and expanded resources - making the former a drop-in memory-downgrade option and the latter a feature-upgrade path requiring PCB redesign.
Availability
MC9RS08KA8CTGR is available at Aetrix Electronics and suitable for smart appliance control, industrial sensor nodes, consumer remote controls, and LED lighting drivers requiring stable component supply and long-term production continuity.
Supply support for MC9RS08KA8CTGR 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 acquired Freescale in 2015 and maintains legacy RS08 product support, focusing on reliable, low-power microcontrollers for cost-sensitive industrial and consumer applications.
The MC9RS08KA8CTGR belongs to the RS08 family designed for ultra-low-power embedded control in space-constrained devices, emphasizing minimal external components, single-wire debug, and robust operation across wide voltage/temperature ranges.
FAQ
What is the maximum operating frequency of the MC9RS08KA8CTGR?
The MC9RS08KA8CTGR supports a maximum bus frequency of 10 MHz, achieved using its trimmed Internal Clock Source (ICS) with FLL. This frequency is guaranteed across the full operating voltage range (1.8 V to 5.5 V) and temperature range (–40°C to +85°C), enabling responsive real-time control without external clock components.
Does the MC9RS08KA8CTGR support debugging during development?
Yes, the MC9RS08KA8CTGR features a single-wire background debug (BKGD) interface on PTA4, allowing full in-circuit debugging including breakpoint setting, memory inspection, and register access. This eliminates the need for multi-pin debug headers and simplifies prototype validation and field firmware updates.
Can the MC9RS08KA8CTGR operate in ultra-low-power modes?
Yes, the MC9RS08KA8CTGR supports WAIT and STOP power-saving modes. In STOP mode at 1.8 V and 25°C, typical supply current is 1.5 μA - and peripherals like the ADC, ACMP, RTI, and KBI remain active to enable wake-on-event functionality, making it ideal for battery-powered sensing applications.
What ADC capabilities does the MC9RS08KA8CTGR provide?
The MC9RS08KA8CTGR integrates a 12-channel, 10-bit successive-approximation ADC with 2.5 μs conversion time. On the 16-pin TSSOP package (MC9RS08KA8CTGR), 8 ADC channels are available. The ADC operates from 2.7 V to 5.5 V and remains fully functional in STOP mode, supporting low-power sensor acquisition.
Is the MC9RS08KA8CTGR pin-compatible with other RS08 family members?
The MC9RS08KA8CTGR in 16-pin TSSOP (Case 948F) shares identical pinout with MC9RS08KA4CTGR, enabling direct substitution where reduced memory (4 KB flash, 126-byte RAM) is acceptable. However, it is not pin-compatible with 20-pin variants (e.g., SOIC/PDIP) or unrelated families like S08 or S12, which have different pin counts and signal assignments.
MC9RS08KA8CTGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Series:
- RS08
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- RS08
- Core Size:
- 8-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 14
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 254 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9RS08KA8CTGR FAQ
1.How can I place an order for MC9RS08KA8CTGR through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9RS08KA8CTGR 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 MC9RS08KA8CTGR reliable?
The price and inventory of MC9RS08KA8CTGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9RS08KA8CTGR is usually 5 days.
3.What payment methods are accepted for MC9RS08KA8CTGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9RS08KA8CTGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9RS08KA8CTGR?
MC9RS08KA8CTGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9RS08KA8CTGR 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 MC9RS08KA8CTGR?
For technical support, including MC9RS08KA8CTGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9RS08KA8CTGR requirements.
6.How does Aetrix verify that MC9RS08KA8CTGR is sourced from the original manufacturer or authorized distributors?
All MC9RS08KA8CTGR 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 MC9RS08KA8CTGR meets industry standards.
7.What is the process for return or replacement of MC9RS08KA8CTGR?
All MC9RS08KA8CTGR units undergo pre-shipment inspection (PSI). If there is an issue with MC9RS08KA8CTGR, 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 MC9RS08KA8CTGR part is unused and in its original packaging.
Return procedure for MC9RS08KA8CTGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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