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NXP Semiconductors MC9S08QE8CWL
- Part No.:
- MC9S08QE8CWL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MC9S08QE8CWL.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,278
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Product details
Overview
MC9S08QE8CWL from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller in a 32-pin QFN package, featuring a 20 MHz CPU core, 8 KB flash, 512 B RAM, 12-bit ADC with temperature sensor, dual analog comparators, and integrated LIN-capable SCI. It targets low-power embedded control in automotive body electronics and industrial sensors.
For engineers reviewing the MC9S08QE8CWL datasheet, MC9S08QE8CWL pinout, MC9S08QE8CWL application, or MC9S08QE8CWL equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative parts - all grounded in Freescale's Rev. 8 datasheet and QFN addendum documentation.
Technical Context
The MC9S08QE8CWL implements the HCS08 CPU core with BGND instruction support and handles up to 32 interrupt/reset sources. Its internal clock source (ICS) uses a frequency-locked loop (FLL) with factory-trimmed reference enabling ±0.2% resolution and 2% deviation over voltage/temperature, supporting bus frequencies from 1–10 MHz.
Power management includes Stop2 and Stop3 modes with sub-µA current draw (0.3–0.8 µA typical), 6 µs wake-up from Stop3, and a dedicated 1 kHz low-power oscillator for RTC operation during deep sleep. Peripheral clock gating allows selective module shutdown to minimize active current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 8-bit core with BGND instruction and 32 interrupt vectors - enables deterministic real-time response in resource-constrained systems |
| Max Bus Frequency | 10 MHz (ICS-FLL mode) - supports timing-critical control loops without external crystal |
| Flash / RAM | 8 KB flash (read/program/erase across full VDD/temp range) + 512 B RAM - sufficient for standalone sensor node firmware with secure boot |
| ADC | 12-bit, 10-channel, 2.5 µs conversion time, internal bandgap reference, and 1.7 mV/°C temp sensor - enables direct thermal monitoring without external components |
| Supply Range | 1.8–3.6 V over –40°C to +85°C - compatible with single-cell Li-ion or regulated 3.3 V rails in automotive and industrial environments |
| Low-Power Modes | Stop2 (0.3 µA typ), Stop3 (0.4 µA typ), and LPRS wait mode (1 µA typ) - extends battery life in intermittent-sensing applications |
| Communication | LIN-capable SCI, I²C (100 kbps), SPI (master/slave), and two TPM modules with PWM/IC/OC - supports mixed-protocol sensor networks and motor control interfaces |
Pinout & Package
MC9S08QE8CWL is housed in a 32-pin QFN package (Case 2078-01, 5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments match the 32-pin LQFP variant per Figure 2 of Rev. 8 datasheet, including dedicated VDDA/VREFH and VSSA/VREFL pins for analog domain isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0/KBIP0/TPM1CH0/ADP0/ACMP1+ | Port A bit 0, keyboard interrupt, TPM1 channel 0, ADC input 0, ACMP1 non-inverting input | Multi-function pin supporting touch sensing (KBI), timer capture (TPM), analog measurement (ADC), and comparator interface - requires careful mux configuration |
| PTA4/ACMP1O/BKGD/MS | ACMP1 output, background debug, master select | Single-wire debug interface (BKGD) enables in-circuit programming and breakpoint debugging without JTAG header footprint |
| PTA5/IRQ/TCLK/RESET | Interrupt request, test clock, reset input | Bi-directional reset pin with internal pullup; doubles as IRQ and TCLK - simplifies board-level reset and test signal routing |
| VDDA/VREFH | Analog power supply / ADC reference high | Separate analog rail decoupling required to maintain 12-bit ADC accuracy; must be tied to VDD unless external reference used |
| VSSA/VREFL | Analog ground / ADC reference low | Isolated analog ground plane recommended; shared with VSS on 16-/20-pin packages but independent on 32-pin QFN |
| PTB7/SCL/EXTAL | I²C clock / external crystal low | Shared SCL and EXTAL function - allows dual-use of pin for communication or clock source, reducing BOM count in space-constrained designs |
Key Features
| Feature | Design Value |
|---|---|
| Single-wire background debug (BKGD) | Enables full in-circuit emulation (ICE) with two hardware breakpoints and 8-deep FIFO trace - eliminates need for debug headers and reduces PCB real estate |
| On-chip security circuitry | Prevents unauthorized read-out of flash and RAM contents - protects firmware IP in production units deployed in unsecured environments |
| Dual analog comparators (ACMP1/ACMP2) | Configurable edge-triggered interrupts and internal bandgap reference - supports zero-crossing detection and threshold-based wake-up without external op-amps |
| Real-time counter (RTC) with LPO | Free-running 8-bit modulus counter powered by 1 kHz on-chip oscillator - provides cyclic wake-up for periodic sampling without external timing components |
| Peripheral clock gating register | Software-controlled disable of clocks to unused modules (e.g., SCI, TPM, ADC) - reduces dynamic current by >50% in partial-active states |
Applications
| Automotive Door Module | Industrial Temperature Sensor Node |
|---|---|
|
Use Scenario: Monitoring window position, lock status, and interior lighting via reed switches and PWM-driven LEDs in vehicle door assemblies. IC Role / Device Role / Timing Role: Central controller executing LIN slave protocol, reading KBI inputs, generating PWM for LED dimming, and managing low-power sleep between events. Use Value: Integrated LIN SCI, 26 GPIOs, and Stop3 mode (0.4 µA) enable self-powered operation from vehicle battery with <1 µA average current over duty cycle. |
Use Scenario: Battery-operated environmental monitor measuring ambient temperature, humidity (via I²C sensor), and supply voltage in remote industrial enclosures. IC Role / Device Role / Timing Role: Data acquisition hub performing 12-bit ADC conversions, processing sensor data, and transmitting via UART to gateway; RTC triggers hourly wake-up. Use Value: On-chip 1.7 mV/°C temperature sensor and 1 kHz LPO eliminate external components, while 512 B RAM buffers readings during sleep to reduce transmit frequency. |
| Smart Appliance Control Board | Medical Patient Monitor Front-End |
|
Use Scenario: Controlling motor speed, display backlight, and user interface buttons in home appliances such as washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Real-time executor of motor control algorithms using TPM PWM outputs, scanning matrix keypad via KBI, and driving segmented LCD via GPIO. Use Value: 10-channel ADC supports analog sensor inputs (e.g., current sense, thermistors); hysteresis and configurable drive strength on all GPIOs ensure robust button debounce and load driving. |
Use Scenario: Signal conditioning and digitization of biopotential signals (ECG, pulse oximetry) in portable patient monitors with strict EMI and safety requirements. IC Role / Device Role / Timing Role: Analog front-end controller acquiring signals via ADC with internal bandgap reference, filtering in firmware, and transmitting processed data via SCI to host MCU. Use Value: Separate VDDA/VSSA pins and internal bandgap reference (1.17 V typ) provide stable 12-bit measurement accuracy; ESD rating (±2 kV HBM) meets IEC 61000-4-2 Level 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08AC16CFGE | 16 KB flash, 1 KB RAM, same HCS08 core and peripheral set; offered in 48-pin QFN only | Higher memory capacity supports larger protocol stacks (e.g., full CAN+LIN), but requires larger PCB footprint and lacks MC9S08QE8CWL's optimized 32-pin QFN thermal performance | Select when firmware size exceeds 8 KB or additional GPIOs are needed; verify layout compatibility with 48-pin footprint and thermal pad dimensions |
| S9KEAZ128AMLH | Kinetis E-series ARM Cortex-M0+, 128 KB flash, 16 KB RAM, 48 MHz max, enhanced ADC (16-bit), no BKGD debug | Higher performance and memory enable advanced features (e.g., sensor fusion, OTA updates), but requires SWD debug infrastructure and higher power budget | Select for future-proofing or migration path beyond 8-bit constraints; not drop-in - requires toolchain, driver, and power design changes |
Compared with MC9S08AC16CFGE and S9KEAZ128AMLH, the MC9S08QE8CWL delivers optimal balance of compact 32-pin QFN packaging, ultra-low Stop3 current (0.4 µA), and proven HCS08 toolchain support - making it ideal for cost-sensitive, battery-limited applications where 8 KB flash suffices and debug simplicity is critical.
Availability
MC9S08QE8CWL is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart appliance control boards, and medical front-end modules requiring stable component supply and long-term lifecycle assurance.
Supply support for MC9S08QE8CWL 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, and IoT markets, with roots in Freescale's embedded MCU heritage.
The MC9S08QE8CWL belongs to the HCS08-based QE series designed specifically for cost-optimized, low-power 8-bit control in automotive body electronics and industrial sensing - emphasizing integration, debug simplicity, and robust operation across extended temperature ranges.
FAQ
What is the maximum operating frequency of the MC9S08QE8CWL CPU core?
The MC9S08QE8CWL CPU core runs at up to 20 MHz when powered at 3.6 V across the full –40°C to +85°C temperature range. Its bus frequency is limited to 10 MHz in ICS-FLL mode, which is the typical operational ceiling for reliable peripheral timing and flash access.
Does the MC9S08QE8CWL support LIN communication natively?
Yes, the MC9S08QE8CWL SCI module supports LIN 2.x master and slave functionality, including extended break generation and detection. This capability is implemented in hardware and documented in the Rev. 8 datasheet under SCI features, enabling direct integration into automotive LIN networks without external transceivers.
What package type and dimensions does the MC9S08QE8CWL use?
The MC9S08QE8CWL uses a 32-pin QFN package (Case 2078-01) measuring 5 mm × 5 mm with 0.5 mm pitch and an exposed thermal pad. This matches the mechanical drawing in Freescale's Rev. 8 datasheet and is distinct from the gold-to-copper wire migration noted in the QFN Addendum (Rev. 0, 2014).
Can the MC9S08QE8CWL operate from a single 1.8 V supply?
Yes, the MC9S08QE8CWL is fully specified to operate from 1.8 V to 3.6 V across –40°C to +85°C. At 1.8 V, it supports reduced CPU frequency (up to ~10 MHz) and maintains full peripheral functionality including ADC, comparators, and low-power modes - confirmed in Table 7 of the Rev. 8 datasheet.
How many analog-to-digital converter (ADC) channels does the MC9S08QE8CWL have?
The MC9S08QE8CWL integrates a 12-bit successive-approximation ADC with 10 input channels (ADP0–ADP9), 2.5 µs conversion time, automatic compare function, internal bandgap reference, and operation down to 1.8 V. It also includes a dedicated 1.7 mV/°C temperature sensor channel.
MC9S08QE8CWL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Series:
- S08
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- S08
- Core Size:
- 8-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SCI, SPI
- Peripherals:
- LVD, PWM, WDT
- Number of I/O:
- 22
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S08QE8CWL FAQ
1.How can I place an order for MC9S08QE8CWL through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08QE8CWL 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 MC9S08QE8CWL reliable?
The price and inventory of MC9S08QE8CWL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08QE8CWL is usually 5 days.
3.What payment methods are accepted for MC9S08QE8CWL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08QE8CWL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08QE8CWL?
MC9S08QE8CWL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08QE8CWL 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 MC9S08QE8CWL?
For technical support, including MC9S08QE8CWL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08QE8CWL requirements.
6.How does Aetrix verify that MC9S08QE8CWL is sourced from the original manufacturer or authorized distributors?
All MC9S08QE8CWL 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 MC9S08QE8CWL meets industry standards.
7.What is the process for return or replacement of MC9S08QE8CWL?
All MC9S08QE8CWL units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08QE8CWL, 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 MC9S08QE8CWL part is unused and in its original packaging.
Return procedure for MC9S08QE8CWL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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