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NXP Semiconductors MC908QC8CDXER
- Part No.:
- MC908QC8CDXER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MC908QC8CDXER.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,135
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Product details
Overview
MC908QC8CDXER from Freescale is an 8-bit HC08-core microcontroller in 16-pin SOIC package, featuring 8 KB flash memory, 384 B RAM, one enhanced SCI (ESCI) supporting LIN 2.0/J2602, 10-bit ADC with up to 10 channels, and a 16 MHz CPU - deployed as a LIN slave in automotive body electronics such as seat position control and door lock modules.
For engineers reviewing the MC908QC8CDXER datasheet, MC908QC8CDXER pinout, MC908QC8CDXER application, or MC908QC8CDXER equivalent, key selection criteria include LIN-compliant ESCI timing accuracy (<0.4% oscillator stability), internal 1–3.2 MHz trimmable oscillator eliminating external crystals, 10K flash write/erase cycles at −40°C to +85°C, and support for stop-mode wake-up via periodic timer.
Technical Context
The MC908QC8CDXER implements the HC08 CPU core with on-chip flash memory configured for in-circuit reprogramming and block protection. Its ESCI module includes LIN-specific enhancements: break symbol detection, synchronization field measurement via ESCI arbiter, and baud rate prescalers enabling precise 1–20 kbps LIN frame timing.
It integrates a dedicated low-power 32 kHz periodic wake-up oscillator independent of main clock sources, allowing reliable exit from stop mode without external interrupts. The analog subsystem comprises a 10-bit successive-approximation ADC with up to 10 input channels and software-selectable reference voltage options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HC08 8-bit CISC architecture, 16 MHz max bus frequency |
| Flash Memory | 8 KB on-chip flash, 10,000 write/erase cycles at −40°C to +85°C |
| RAM | 384 bytes static RAM, retained in wait/stop modes |
| ADC | 10-bit SAR ADC with up to 10 external inputs, configurable sample time |
| ESCI | LIN 2.0/J2602-compliant UART with break detection, sync measurement, and 1–115 kbps baud range |
| Oscillator | Internal trimmable RC oscillator (1/2/3.2 MHz nominal), <0.4% accuracy over LIN frame |
| Wake-up Timer | Dedicated 32 kHz oscillator with programmable timeout (40 µs to 3 min), active in all power modes |
| Operating Voltage | 3.3 V to 5.0 V supply range, qualified for automotive transients |
Pinout & Package
MC908QC8CDXER is housed in a 16-lead SOIC package (10.30 mm × 7.5 mm body, 50 mil pitch), rated for −40°C to +85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main digital supply input (3.3–5.0 V) |
| VSS | Ground | Digital ground reference |
| XTAL | Crystal input | Optional external crystal connection (not required due to internal oscillator) |
| EXTAL | Crystal output / external clock input | Drives external crystal or accepts external clock source |
| PA0–PA7 | Port A I/O | 8-bit bidirectional port with pull-ups, KBI interrupt capability |
| PTA0–PTA7 | Port A alternate function | Shared with ADC inputs, ESCI TX/RX, timer capture/compare |
| RESET | Active-low reset | Hardware reset input with internal pull-up and LVI monitoring |
| IRQ | Interrupt request | Edge-sensitive external interrupt input |
Key Features
| Feature | Design Value |
|---|---|
| LIN 2.0 ESCI | Integrated LIN-compliant UART with hardware sync field measurement and robust break symbol filtering |
| Trimmable Internal Oscillator | 1/2/3.2 MHz selectable RC oscillator trimmed to <0.4% error over LIN frame duration |
| In-Circuit Flash Reprogramming | Full flash update capability without removing MCU from system; supports field firmware upgrades |
| Flash Block Protection | Configurable read/write protection per flash block prevents unauthorized code access or accidental overwrite |
| Low-Power Wake-Up Timer | Dedicated 32 kHz oscillator enables deterministic wake-up from stop mode without external components |
| Automotive Qualification | Qualified per AEC-Q100 Grade 3 (−40°C to +85°C), including shock, vibration, and humidity testing |
Applications
| Seat Position Control | Door Lock Module |
|---|---|
Use Scenario: Motorized adjustment of driver/passenger seat position using potentiometer feedback and H-bridge drive signals. IC Role / Device Role / Timing Role: LIN slave node executing position calculation, motor direction/timing control, and fault reporting over ESCI. Use Value: Eliminates external crystal and reduces BOM count by integrating LIN-compliant timing and ADC with 10-bit resolution for analog sensor interface. | Use Scenario: Centralized control of door lock actuators, mirror folding, and window lift functions in entry systems. IC Role / Device Role / Timing Role: LIN slave managing multiple solenoid drivers and switch inputs while synchronizing with master node timing. Use Value: Uses internal oscillator's <0.4% LIN frame accuracy to maintain strict timing compliance without external clock components. |
| Roof Sensor Interface | Climate Control Panel |
Use Scenario: Sunroof position sensing and light-intensity-based automatic shading actuation. IC Role / Device Role / Timing Role: Analog sensor hub with 10-bit ADC sampling ambient light and potentiometer, communicating status via LIN. Use Value: Leverages 10-channel ADC and ESCI's LIN break detection to reject noise during vehicle EMI events. | Use Scenario: User interface panel for HVAC fan speed, temperature setpoint, and mode selection in cabin climate systems. IC Role / Device Role / Timing Role: LIN slave collecting button presses and rotary encoder data, transmitting commands and status to HVAC controller. Use Value: Supports ultra-fast flash programming (64 bytes in 2 ms) enabling rapid calibration updates during production line test. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LIN slave microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC908QC8CDSE | 20-pin TSSOP package (6.50 mm × 4.4 mm), same flash/RAM/peripherals but additional GPIO and ADC channels | Preferred where board layout allows larger footprint and extra I/O is needed for expanded sensor or actuator interface | Select MC908QC8CDSE when requiring ≥12 GPIO or additional ADC inputs beyond MC908QC8CDXER's 8-bit port constraints |
| MC908QC4CDXE | 4 KB flash, identical 16-pin SOIC package and peripheral set, reduced memory and no LIN-specific ESCI optimizations | Suitable only for non-LIN applications or legacy LIN implementations lacking sync-field measurement or enhanced break detection | Choose MC908QC4CDXE only if firmware size ≤4 KB and LIN 2.0 compliance is not required |
Compared with MC908QC8CDXER, MC908QC8CDSE offers more I/O in a compact TSSOP package but requires PCB redesign, while MC908QC4CDXE sacrifices LIN 2.0 feature fidelity and flash capacity - making MC908QC8CDXER the optimal balance of LIN compliance, footprint, and memory for cost-sensitive automotive body nodes.
Availability
MC908QC8CDXER is available at Aetrix Electronics and suitable for automotive seat control, door lock modules, roof sensor interfaces, and climate control panels requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC908QC8CDXER 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
Freescale Semiconductor (now part of NXP Semiconductors) designed high-reliability microcontrollers for automotive, industrial, and general-market applications with emphasis on functional safety and system integration.
The MC908QC8CDXER belongs to the HC08 QC family - engineered specifically for cost-sensitive LIN slave nodes in automotive body electronics, combining flash flexibility, integrated analog, and LIN-timed communication in small-footprint packages.
FAQ
What is the maximum operating temperature range for the MC908QC8CDXER?
The MC908QC8CDXER is specified for operation from −40°C to +85°C ambient temperature and is qualified per AEC-Q100 Grade 3 standards. It includes built-in LVI (low-voltage inhibit) and POR (power-on reset) circuits to ensure reliable startup and brownout recovery across this full range. This rating applies specifically to the CDXER variant with 16-pin SOIC packaging.
Does the MC908QC8CDXER require an external crystal to operate in LIN networks?
No, the MC908QC8CDXER does not require an external crystal for LIN operation. Its fully trimmable internal oscillator achieves <0.4% accuracy over a LIN frame duration, meeting LIN 2.0 timing requirements without external timing components. XTAL/EXTAL pins remain available for optional crystal use, but are not necessary for compliant LIN slave functionality in the MC908QC8CDXER.
How many ADC channels does the MC908QC8CDXER support, and what is the resolution?
The MC908QC8CDXER supports up to 10 external analog input channels with 10-bit resolution using its successive-approximation ADC. Input selection is software-configurable, and the ADC includes programmable sample time and multiple reference voltage options. All 10 channels are accessible on the 16-pin SOIC package via shared port pins, with channel mapping confirmed in the MC908QC8CDXER pin assignment table.
Is the MC908QC8CDXER pin-compatible with other members of the QC family in 16-pin SOIC?
Yes, the MC908QC8CDXER shares identical pinout and electrical characteristics with other QC-family 16-pin SOIC variants including MC908QC4CDXE and MC908QC16CDXE. All share the same VDD/VSS placement, RESET/IRQ locations, ESCI TX/RX assignments, and ADC input mappings - enabling direct substitution where flash and RAM requirements align, without PCB changes.
What development tools are officially supported for programming the MC908QC8CDXER?
Officially supported tools for the MC908QC8CDXER include the USBMULTILINK08E in-circuit debugger/programmer, DEMO908QC16 evaluation board with MON08 interface, and CodeWarrior® Standard Edition (CWS-H08-STDED-CX). These tools enable flash programming, real-time debugging, and peripheral configuration - all validated for MC908QC8CDXER's 8 KB flash and ESCI-based LIN firmware development.
MC908QC8CDXER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Series:
- HC08
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- SCI, SPI
- Peripherals:
- LVD, POR, PWM
- Number of I/O:
- 12
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 384 x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 10x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC908QC8CDXER FAQ
1.How can I place an order for MC908QC8CDXER through Aetrix?
Please submit a Request for Quotation (RFQ) for MC908QC8CDXER 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 MC908QC8CDXER reliable?
The price and inventory of MC908QC8CDXER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC908QC8CDXER is usually 5 days.
3.What payment methods are accepted for MC908QC8CDXER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC908QC8CDXER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC908QC8CDXER?
MC908QC8CDXER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC908QC8CDXER 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 MC908QC8CDXER?
For technical support, including MC908QC8CDXER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC908QC8CDXER requirements.
6.How does Aetrix verify that MC908QC8CDXER is sourced from the original manufacturer or authorized distributors?
All MC908QC8CDXER 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 MC908QC8CDXER meets industry standards.
7.What is the process for return or replacement of MC908QC8CDXER?
All MC908QC8CDXER units undergo pre-shipment inspection (PSI). If there is an issue with MC908QC8CDXER, 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 MC908QC8CDXER part is unused and in its original packaging.
Return procedure for MC908QC8CDXER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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