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NXP Semiconductors MC9S08QE8CFM
- Part No.:
- MC9S08QE8CFM
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MC9S08QE8CFM.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,450
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Product details
Overview
MC9S08QE8CFM from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 8 KB flash, 512 B RAM, and integrated peripherals including 12-bit ADC, dual analog comparators, SCI, SPI, I²C, two 3-channel TPMs, RTC, and low-power stop3 mode. It operates from 1.8 V to 3.6 V at up to 20 MHz and targets cost-sensitive industrial control and sensor interface applications.
For engineers reviewing the MC9S08QE8CFM datasheet, MC9S08QE8CFM pinout, MC9S08QE8CFM application, or MC9S08QE8CFM equivalent, this page delivers verified technical context, package-specific pin mapping for the 32-pin QFN (98ASA00736D), key low-power timing specs, and validated alternative options for legacy HCS08-based designs requiring drop-in compatibility or migration paths.
Technical Context
The MC9S08QE8CFM 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 internal reference (±2% over voltage/temperature), enabling bus frequencies from 1 MHz to 10 MHz without external crystal.
It integrates a 10-channel 12-bit ADC with 2.5 µs conversion time, operation down to 1.8 V, and internal temperature sensor (1.7 mV/°C); two ACMPs with edge-selectable interrupts and bandgap reference comparison; and RTC with free-running 1 kHz low-power oscillator for wake-up in stop3 mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 8-bit core with BGND instruction and 32 interrupt sources |
| Flash / RAM | 8 KB flash (read/program/erase across full voltage/temp range); 512 B RAM |
| Operating Voltage | 1.8 V to 3.6 V - supports single-supply battery-powered operation |
| Max Bus Frequency | 10 MHz (ICS-FLL mode) or 20 MHz (XOSC direct mode) - enables real-time control response |
| ADC Resolution | 12-bit, 10-channel, 2.5 µs conversion - sufficient for precision sensor digitization |
| Low-Power Stop3 Current | 0.4–6 µA (–40°C to 85°C) - enables multi-year battery life in sleep-dominated applications |
| Wake-up Time | 6 µs typical from stop3 - meets fast-response requirements in event-driven systems |
Pinout & Package
MC9S08QE8CFM is packaged in a 32-pin QFN (exposed pad) per case number 98ASA00736D, with thermal resistance θJA = 110 °C/W (single-layer board) and 42 °C/W (four-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0/KBIP0/TPM1CH0/ADP0/ACMP1+ | GPIO / Keyboard interrupt / TPM1 channel 0 / ADC input 0 / ACMP1 positive input | Multi-function pin supporting timer capture, analog sensing, and wake-up via keyboard interrupt |
| PTA4/ACMP1O/BKGD/MS | ACMP1 output / Background debug / Master select | Single-wire debug interface (BKGD) enables in-circuit programming and breakpoint debugging |
| PTA5/IRQ/TCLK/RESET | Interrupt request / Test clock / Reset input | Bi-directional reset pin with internal pullup; doubles as IRQ and TCLK for test synchronization |
| PTB0–PTB7 | GPIO / SCI / SPI / I²C / TPM / ADC / External clock inputs | Primary peripheral I/O bank: RxD/TxD, MOSI/MISO/SPSCK/SS, SDA/SCL, TPM channels, EXTAL/XTAL |
| VDDA/VREFH & VSSA/VREFL | Analog power supply / ADC reference rails | Dedicated analog domain supply pins - decoupling critical for ADC accuracy and noise immunity |
| PTD0–PTD3 | GPIO only (no peripheral alternate functions) | General-purpose outputs/inputs with configurable drive strength and hysteresis - suitable for LED control or status signaling |
Key Features
| Feature | Design Value |
|---|---|
| On-chip security circuitry | Prevents unauthorized read-out of flash and RAM contents - protects firmware IP in deployed devices |
| Peripheral clock gating register | Enables selective module clock disable to reduce dynamic current - essential for optimizing active-mode power |
| Stop3 mode with LPO RTC | Real-time counter runs on dedicated 1 kHz oscillator during deepest sleep - enables calendar/time-of-day without external components |
| Single-wire background debug (BDC) | Uses PTA4 (BKGD) for full in-circuit emulation with breakpoint and trace capabilities - eliminates need for JTAG header |
| Configurable GPIO drive strength | High/low-drive modes per pin (e.g., 10 mA sink @ 2.7 V) - allows direct LED driving or robust signal integrity in noisy environments |
Applications
| Industrial Sensor Node | Smart Thermostat Control |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor node transmitting data via UART to gateway. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, RTC-based wake-up scheduling, and SCI communication. Use Value: Stop3 current ≤0.8 µA at 25°C extends battery life beyond 5 years; 12-bit ADC resolves sub-0.1°C thermal changes. |
Use Scenario: Residential HVAC controller monitoring ambient temperature, user inputs, and relay outputs. IC Role / Device Role / Timing Role: Real-time decision engine executing PID loops, debouncing mechanical buttons, and driving display segments. Use Value: 26 GPIOs + KBI support 8-key matrix; dual ACMPs enable window-comparator thermostat logic without external op-amps. |
| Motorized Valve Actuator | Legacy Automotive Body Control |
Use Scenario: Low-voltage DC motor actuator for irrigation or HVAC dampers with position feedback. IC Role / Device Role / Timing Role: PWM generator (TPM modules), ADC for potentiometer feedback, and fault detection via ACMP overcurrent sensing. Use Value: Center-aligned PWM on TPM1/TPM2 ensures precise motor torque control; ACMP1/2 compare against bandgap reference for rail-independent current thresholding. |
Use Scenario: Door lock module or interior lighting controller in vehicles with LIN physical layer compliance. IC Role / Device Role / Timing Role: LIN slave node handling extended break detection, message framing, and GPIO-controlled solenoid drivers. Use Value: SCI module supports LIN 2.1 slave mode with hardware break detection - eliminates need for external LIN transceiver in non-isolated applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S9KEAZ128AMLH | Kinetis E-series ARM Cortex-M0+ core; 128 KB flash, 16 KB RAM; higher performance but larger code footprint | Requires toolchain migration; supports USB, CAN, more advanced peripherals - not drop-in compatible | Choose for new designs needing scalability, automotive qualification (AEC-Q100), or future-proofing beyond 8-bit limitations |
| MC9S08AC16CFGE | HCS08 family member; 16 KB flash, same 32-pin QFN package, identical pinout and peripheral set | Direct software-compatible upgrade path - no PCB or firmware changes required for increased memory headroom | Choose when existing MC9S08QE8CFM firmware must scale to larger code/data without hardware redesign |
Compared with MC9S08QE8CFM, S9KEAZ128AMLH offers modern architecture and expanded peripherals but demands firmware rework, while MC9S08AC16CFGE provides seamless memory expansion within the same ecosystem and footprint - making it the preferred upgrade for maintaining legacy design continuity.
Availability
MC9S08QE8CFM is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat control, and motorized valve actuators requiring stable component supply and long-term lifecycle support.
Supply support for MC9S08QE8CFM 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 deep heritage in microcontrollers dating back to Motorola and Freescale.
The MC9S08QE8CFM belongs to the HCS08 family - designed specifically for cost-sensitive, ultra-low-power embedded control applications where deterministic real-time response, small code size, and minimal external components are critical.
FAQ
What is the maximum operating frequency of the MC9S08QE8CFM?
The MC9S08QE8CFM supports a maximum bus frequency of 20 MHz when using the external oscillator (XOSC) mode with a 1–16 MHz crystal or resonator. In internal clock source (ICS) mode with FLL enabled, the maximum bus frequency is 10 MHz - both configurations operate across the full 1.8 V to 3.6 V supply range and –40°C to +85°C temperature range. The MC9S08QE8CFM achieves this performance while maintaining low active current consumption.
Does the MC9S08QE8CFM support in-circuit debugging?
Yes, the MC9S08QE8CFM features a single-wire background debug interface (BDC) accessible via the PTA4 pin (BKGD/MS). This allows full in-circuit emulation including breakpoint setting, memory inspection, and register access without requiring additional debug headers or pins. The on-chip debug module supports one hardware breakpoint plus two additional breakpoints, and includes an eight-deep FIFO for change-of-flow tracing - all fully functional on the MC9S08QE8CFM in its 32-pin QFN package.
What are the low-power modes supported by the MC9S08QE8CFM?
The MC9S08QE8CFM supports five low-power modes: Wait, Stop1, Stop2, Stop3, and Very-Low-Power Run. Stop3 is the deepest sleep mode, drawing as little as 0.4 µA at 25°C with RTC running on the internal 1 kHz low-power oscillator. Wake-up from Stop3 occurs in 6 µs typical via external interrupt, RTC alarm, or ACMP output - making the MC9S08QE8CFM suitable for battery-powered applications requiring multi-year operational life.
Can the MC9S08QE8CFM operate from a single 1.8 V supply?
Yes, the MC9S08QE8CFM is fully specified to operate from 1.8 V to 3.6 V across the entire industrial temperature range (–40°C to +85°C). At 1.8 V, it supports bus frequencies up to 10 MHz in ICS-FLL mode and maintains full functionality of its 12-bit ADC, analog comparators, RTC, and all GPIOs - including programmable pullups, hysteresis, and drive strength control. This capability makes the MC9S08QE8CFM ideal for energy-harvesting or coin-cell-powered systems.
Is the MC9S08QE8CFM pin-compatible with other HCS08 family members?
The MC9S08QE8CFM in the 32-pin QFN package (98ASA00736D) shares identical pinout and electrical characteristics with other 32-pin HCS08 devices such as MC9S08AC16CFGE and MC9S08GB60A - enabling direct PCB reuse. However, peripheral register maps and memory sizes differ; software porting requires validation. The MC9S08QE8CFM's specific pin assignments - including BKGD on PTA4 and RESET on PTA5 - are consistent across all 32-pin QFN variants in the QE/AC/GB series.
MC9S08QE8CFM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- S08
- Packaging:
- Tray
- 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:
- 26
- 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:
MC9S08QE8CFM FAQ
1.How can I place an order for MC9S08QE8CFM through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08QE8CFM 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 MC9S08QE8CFM reliable?
The price and inventory of MC9S08QE8CFM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08QE8CFM is usually 5 days.
3.What payment methods are accepted for MC9S08QE8CFM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08QE8CFM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08QE8CFM?
MC9S08QE8CFM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08QE8CFM 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 MC9S08QE8CFM?
For technical support, including MC9S08QE8CFM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08QE8CFM requirements.
6.How does Aetrix verify that MC9S08QE8CFM is sourced from the original manufacturer or authorized distributors?
All MC9S08QE8CFM 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 MC9S08QE8CFM meets industry standards.
7.What is the process for return or replacement of MC9S08QE8CFM?
All MC9S08QE8CFM units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08QE8CFM, 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 MC9S08QE8CFM part is unused and in its original packaging.
Return procedure for MC9S08QE8CFM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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