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NXP Semiconductors S9S08QD4J1MSC
- Part No.:
- S9S08QD4J1MSC
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
S9S08QD4J1MSC.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,627
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Product details
Overview
S9S08QD4J1MSC from NXP Semiconductors is an 8-bit HCS08 microcontroller with 16 MHz CPU, 4 KB Flash, 256 bytes RAM, and integrated ADC, dual timers (TIM1/TIM2), keyboard interrupt (KBI), and internal clock source (ICS) - used in automotive body electronics, sensor interface modules, and low-power control systems.
For engineers reviewing the S9S08QD4J1MSC datasheet, S9S08QD4J1MSC pinout, S9S08QD4J1MSC application, or S9S08QD4J1MSC equivalent, key selection criteria include its 8-pin SOIC package, -40°C to 125°C automotive temperature grade, single-wire background debug interface, and flash block protection for secure firmware updates.
Technical Context
The S9S08QD4J1MSC implements the HCS08 CPU core with BGND instruction support and hardware breakpoint capability via on-chip debug module. It integrates a frequency-locked-loop (FLL)-based ICS with precision trimming (0.2% resolution, ±2% deviation over voltage/temperature) and supports Wait + three Stop modes for ultra-low-power operation.
Its peripheral set includes a 4-channel 10-bit ADC with hardware trigger from RTI, two independent timer/PWM modules (TIM1: 2-channel, TIM2: 1-channel), and a 4-pin keyboard interrupt module with software-selectable edge/level sensitivity and internal pullups - all accessible through four general-purpose I/O pins, one input-only, and one output-only terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 8-bit core with 16 MHz max bus frequency and HC08 instruction set plus BGND |
| Flash Memory | 4096 bytes - sufficient for compact real-time control firmware with field-upgradable capability |
| RAM Size | 256 bytes - supports stack, variables, and small data buffers in resource-constrained applications |
| ADC | 4-channel, 10-bit with internal bandgap reference, temperature sensor, and RTI-triggered conversion |
| Timers | TIM1 (2-channel) and TIM2 (1-channel) supporting input capture, output compare, and edge/center-aligned PWM |
| Debug Interface | Single-wire background debug (BDM) - enables in-circuit programming and real-time debugging with minimal pin count |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive environments per AEC-Q100 Grade 1 |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), RoHS-compliant, surface-mount, 150 mil width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply voltage | Core and I/O power rail (2.7–5.5 V); decoupling required near pin |
| VSS | Ground | Digital ground reference; must be connected to system GND plane |
| RESET | Reset input | Active-low reset with internal pullup; initiates cold start or recovery from fault |
| BKGD/MS | Background debug / mode select | Single-wire BDM communication and chip mode configuration during reset |
| PTA0–PTA3 | General-purpose I/O | Four bidirectional GPIO pins with software-selectable pullups, slew rate, and drive strength |
| PTA4 | Input-only | Dedicated input pin (e.g., IRQ or analog sense); no output driver enabled |
| PTA5 | Output-only | Dedicated output pin (e.g., LED drive or status flag); no input buffer enabled |
Key Features
| Feature | Design Value |
|---|---|
| Internal Clock Source (ICS) | FLL-based oscillator with 0.2% trim resolution and ±2% stability across temp/voltage - eliminates external crystal for cost-sensitive designs |
| Flash Block Protection | Hardware-enforced write/erase lock per flash block - prevents accidental or malicious firmware corruption |
| Low-Voltage Detection | Configurable LVD reset or interrupt at user-defined threshold - ensures reliable operation during brown-out conditions |
| Keyboard Interrupt (KBI) | 4-pin matrix interrupt with polarity-selectable edge/level detection and internal pullups - reduces external components in keypad interfaces |
| Real-Time Interrupt (RTI) | Programmable periodic interrupt source - enables precise timing for sensor sampling or state-machine scheduling without consuming timer resources |
Applications
| Automotive Door Module | Industrial Sensor Node |
|---|---|
Use Scenario: Control of window lift, mirror adjustment, and interior lighting in vehicle door assemblies. IC Role / Device Role / Timing Role: Primary MCU executing local control logic, interpreting switch inputs, driving motor drivers and LEDs, and communicating via LIN or discrete signals. Use Value: S9S08QD4J1MSC's 125°C rating, KBI for switch scanning, and PWM for LED dimming meet AEC-Q100 requirements while minimizing BOM count. | Use Scenario: Battery-powered environmental sensor unit measuring temperature, humidity, and ambient light. IC Role / Device Role / Timing Role: System controller managing ADC sampling, data preprocessing, sleep/wake cycles, and wireless transmission triggers. Use Value: Integrated 10-bit ADC with internal reference and temperature sensor, plus Stop3 mode current <1 µA, extends battery life in unattended deployments. |
| Smart Appliance Control Board | Medical Diagnostic Handset |
Use Scenario: User interface and motor control subsystem in washing machines or HVAC fan controllers. IC Role / Device Role / Timing Role: Real-time actuator coordination (PWM-driven motors), button response handling, and status indication via GPIO and ADC feedback. Use Value: TIM1/TIM2 dual PWM channels enable independent motor speed control; KBI handles front-panel keypresses with debouncing in firmware. | Use Scenario: Portable diagnostic tool with analog sensor front-end and tactile UI for point-of-care use. IC Role / Device Role / Timing Role: Signal acquisition engine interfacing thermistor, photodiode, and pushbutton inputs while maintaining strict EMC and safety compliance. Use Value: On-chip bandgap reference and ADC auto-compare reduce calibration drift; internal pullups on RESET/IRQ lower external component count for compact PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08QD4CDT | Same core, 4 KB Flash, 256 B RAM, but in 8-pin TSSOP package and rated for -40°C to 85°C industrial range | Lacks AEC-Q100 qualification and extended temperature support; suitable for non-automotive consumer/industrial use | Select when cost-sensitive industrial design does not require automotive-grade reliability or 125°C operation |
| S9S08QD2J1MSC | Same package and temperature grade, but only 2 KB Flash and 128 B RAM - reduced memory footprint | Applicable where firmware size is constrained and peripheral usage is minimal (e.g., simple switch-to-PWM translation) | Choose when application logic fits within 2 KB Flash and lower RAM suffices - lowers unit cost without changing PCB layout |
Compared with MC9S08QD4CDT and S9S08QD2J1MSC, the S9S08QD4J1MSC uniquely combines automotive qualification (-40°C to 125°C), 4 KB Flash headroom for future feature expansion, and 8-pin SOIC compatibility - making it optimal for space-constrained, safety-aware embedded control where long-term supply stability matters.
Availability
S9S08QD4J1MSC is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and smart appliance control boards requiring stable component supply across multi-year production cycles.
Supply support for S9S08QD4J1MSC 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 - founded in 2006 following the spin-off of Philips Semiconductors.
The S9S08QD4J1MSC belongs to the HCS08 QD-series, designed specifically for cost-optimized, low-pin-count automotive and industrial control applications where robustness, debuggability, and long-term supply assurance are critical.
FAQ
What is the maximum operating frequency of the S9S08QD4J1MSC?
The S9S08QD4J1MSC features an HCS08 CPU core with a maximum bus frequency of 16 MHz. This is achieved using the internal clock source (ICS) with FLL, which can be configured to deliver stable system clocks across the full operating voltage (2.7–5.5 V) and temperature (-40°C to 125°C) range. The 16 MHz specification is validated in the official NXP datasheet Rev. 7 (August 2022).
Does the S9S08QD4J1MSC support in-circuit debugging?
Yes, the S9S08QD4J1MSC supports single-wire background debug (BDM) via the BKGD/MS pin. It provides hardware breakpoint capability - one active breakpoint during in-circuit debugging plus two additional breakpoints managed by the on-chip debug module. This enables real-time code inspection and firmware validation without requiring external JTAG hardware. The S9S08QD4J1MSC debug interface is fully compatible with standard NXP BDM tools.
What are the key differences between S9S08QD4J1MSC and S9S08QD2J1MSC?
The S9S08QD4J1MSC and S9S08QD2J1MSC share identical package (8-pin SOIC), temperature grade (-40°C to 125°C), and peripheral set, but differ in memory: S9S08QD4J1MSC has 4096 bytes Flash and 256 bytes RAM, while S9S08QD2J1MSC has 2048 bytes Flash and 128 bytes RAM. Both are automotive-qualified and pin-compatible, allowing drop-in replacement where firmware size permits. The S9S08QD4J1MSC offers greater headroom for feature-rich implementations.
Is the S9S08QD4J1MSC RoHS compliant and AEC-Q100 qualified?
Yes, the S9S08QD4J1MSC is RoHS compliant and qualified to AEC-Q100 Grade 1 standards (operating temperature -40°C to +125°C). Its qualification is documented in the official NXP MC9S08QD4 Series Data Sheet Rev. 7, and the device carries the "J" suffix denoting automotive temperature grade. All package options - including the 8-pin SOIC used by S9S08QD4J1MSC - meet these requirements.
Can the S9S08QD4J1MSC operate without an external crystal?
Yes, the S9S08QD4J1MSC can operate entirely from its internal clock source (ICS), which includes a frequency-locked-loop (FLL) and precision-trimmed internal reference. The ICS achieves 0.2% resolution and ±2% deviation over temperature and voltage - eliminating the need for external crystals or resonators in most cost-sensitive and space-constrained applications. External clock sources remain optional for higher accuracy requirements.
S9S08QD4J1MSC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- S08
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Verified
- Core Processor:
- S08
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- -
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 4
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S08QD4J1MSC FAQ
1.How can I place an order for S9S08QD4J1MSC through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S08QD4J1MSC 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 S9S08QD4J1MSC reliable?
The price and inventory of S9S08QD4J1MSC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S08QD4J1MSC is usually 5 days.
3.What payment methods are accepted for S9S08QD4J1MSC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S08QD4J1MSC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S08QD4J1MSC?
S9S08QD4J1MSC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S08QD4J1MSC 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 S9S08QD4J1MSC?
For technical support, including S9S08QD4J1MSC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S08QD4J1MSC requirements.
6.How does Aetrix verify that S9S08QD4J1MSC is sourced from the original manufacturer or authorized distributors?
All S9S08QD4J1MSC 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 S9S08QD4J1MSC meets industry standards.
7.What is the process for return or replacement of S9S08QD4J1MSC?
All S9S08QD4J1MSC units undergo pre-shipment inspection (PSI). If there is an issue with S9S08QD4J1MSC, 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 S9S08QD4J1MSC part is unused and in its original packaging.
Return procedure for S9S08QD4J1MSC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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