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NXP Semiconductors MC9S08QE128CFT
- Part No.:
- MC9S08QE128CFT
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MC9S08QE128CFT.pdf
- Description:
- IC MCU 8BIT 128KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,262
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Product details
Overview
MC9S08QE128CFT from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 128 KB flash, 8 KB RAM, 70 GPIOs, 24-channel 12-bit ADC, dual analog comparators, and triple timer/PWM modules - designed for automotive body electronics, industrial control, and smart sensor nodes requiring low-voltage operation down to 1.8 V.
For engineers reviewing the MC9S08QE128CFT datasheet, MC9S08QE128CFT pinout, MC9S08QE128CFT application, or MC9S08QE128CFT equivalent, key selection criteria include its 50.33-MHz CPU at ≥2.4 V, stop-mode wake-up in 6 μs, integrated real-time counter with 1-kHz low-power oscillator, and dual I²C/SPI/SCI interfaces supporting LIN-compliant communication in automotive subsystems.
Technical Context
The MC9S08QE128CFT integrates an HCS08 CPU core with BGND instruction support and up to 32 interrupt/reset sources. Its clock system combines a precision internal clock source (ICS) with ±0.2% trimming and an external crystal oscillator (XOSC) supporting 1–16 MHz crystals or 31.25 kHz–38.4 kHz resonators.
Power management includes two low-power stop modes, reduced-power wait mode, peripheral clock gating via PCE register, and stop3-mode operation with active peripherals including ADC, ACMP, RTC, and SCI - all enabled while drawing sub-μA current using the 1-kHz internal oscillator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 8-bit core with HC08 instruction set plus BGND; supports up to 50.33 MHz at VDD ≥ 2.4 V |
| Flash / RAM | 131,072 bytes flash with read/program/erase over full voltage/temperature range; 8,064 bytes RAM with security lock |
| ADC | 24-channel, 12-bit SAR ADC with 2.5 μs conversion time, internal bandgap reference, temperature sensor (1.7 mV/°C), and stop3-mode operation |
| Timers & PWM | One 6-channel TPM3 + two 3-channel TPM1/TPM2; each channel configurable as input capture, output compare, or edge-/center-aligned PWM |
| Communication | Dual SCI (LIN master/slave capable), dual SPI (full-duplex or single-wire), dual I²C (100 kbps, multi-master, 10-bit addressing) |
| Supply Range | 1.8 V to 3.6 V operating voltage; 0.6 V to 1.0 V RAM retention; LVD thresholds programmable at 1.82 V (low) and 2.16 V (high) |
| Package | 48-pin QFN (Case 1314, 7 mm² footprint); copper-wire bonded per QFN Addendum Rev. 0 (2014) |
Pinout & Package
MC9S08QE128CFT is housed in a 48-pin QFN package (Case 1314) with exposed thermal pad, measuring 7 mm². The package uses copper wire bonding per Freescale QFN Addendum Rev. 0 (July 2014).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Power supply / ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; internal connection to two pads per rail in 48-pin QFN |
| PTA4 / BKGD | Background debug interface | Single-wire BDC pin enabling in-circuit debugging, breakpoint setting, and ICE module access without JTAG overhead |
| PTA5 / RESET | Reset input | Active-low reset with internal pull-up; accepts external reset assertion or watchdog/COP/LVD-triggered reset |
| PTB6 / XTAL & PTB7 / EXTAL | Crystal oscillator terminals | Supports Pierce oscillator with 1–16 MHz crystals or 31.25 kHz–38.4 kHz ceramic resonators; low-power mode compatible |
| PTC5 / ACMP2O & PTC6 / ACMP2+ | Analog comparator 2 inputs/output | ACMP2 supports internal bandgap reference comparison, interrupt on edge detection, and routing to TPM for event triggering |
| PTE0 / TPM2CLK & PTE1 / MOSI1 | Timer clock / SPI data | Shared pin enables synchronous TPM2 operation from external clock or internal bus clock; MOSI1 supports full-duplex SPI1 transfers |
Key Features
| Feature | Design Value |
|---|---|
| Low-power stop3 mode | Enables RTC, ADC, ACMP, and SCI to remain active while CPU and most clocks halt - critical for battery-powered wake-on-event systems |
| Integrated real-time counter (RTC) | 8-bit modulus counter with binary/decimal prescaler and free-running 1-kHz on-chip oscillator - eliminates need for external 32.768 kHz crystal |
| Security circuitry | Prevents unauthorized flash/RAM access via background debug interface; blocks memory reads during secure debug sessions |
| Peripheral clock enable (PCE) | Per-module clock gating reduces dynamic power by disabling clocks to unused peripherals - essential for deterministic low-power design |
| Temperature sensor | On-die 1.7 mV/°C sensor with dedicated ADC channel - enables system-level thermal monitoring without external components |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and interior lighting in 12 V vehicle architectures. IC Role / Device Role: Main MCU executing LIN slave protocol, driving H-bridge drivers, sampling analog sensors (potentiometers, thermistors), and managing EEPROM-based configuration. Use Value: 24-channel ADC and dual ACMPs enable simultaneous monitoring of multiple analog inputs; LIN-compliant SCIs reduce wiring complexity and EMI vs. CAN. | Use Scenario: Battery-powered environmental monitor deployed in remote HVAC ducts or factory floors with wireless telemetry backhaul. IC Role / Device Role: Data acquisition engine performing periodic temperature/humidity/pressure readings, local threshold-based alerting, and low-duty-cycle radio wake-up coordination. Use Value: Stop3 mode with 6 μs wake-up and 1-kHz RTC allows precise 1-second sampling intervals while consuming <10 μA average current - extending 2× AA battery life beyond 5 years. |
| Smart Lighting Controller | Home Appliance Motor Interface |
Use Scenario: LED driver board for tunable-white architectural lighting with DALI or 0–10 V analog dimming interface. IC Role / Device Role: PWM generator for RGBW channel control, ambient light sensing via ADC, and communication bridge between DALI transceiver and local microcontroller. Use Value: Triple TPM modules provide independent 6-channel edge-aligned PWM outputs per color channel; 12-bit resolution ensures smooth 16-bit-equivalent dimming depth via dithering. | Use Scenario: BLDC motor commutation controller in washing machine drum drive, interfacing Hall-effect sensors and gate drivers. IC Role / Device Role: Real-time commutation sequencer using TPM input capture for rotor position feedback and output compare for precise MOSFET timing. Use Value: Input capture on TPM channels achieves <1 μs timing resolution for Hall sensor edges; 6-channel TPM3 supports six independent high-resolution PWM outputs for 3-phase inverter control. |
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 and no HCS08 binary compatibility | Targets new designs requiring higher throughput or RTOS support; not suitable for legacy HCS08 firmware migration | Select when migrating from 8-bit to 32-bit architecture with need for USB, CAN, or floating-point math - not for drop-in replacement |
| MC9S08AC128CFU | Same HCS08 core, 128 KB flash, but 48-pin QFN with only 38 GPIOs, no RTC, no second I²C or SCI, and no ACMP2 | Cost-optimized variant for simpler control tasks where real-time scheduling and dual communication buses are unnecessary | Select for cost-sensitive applications with reduced peripheral requirements - requires PCB redesign due to different pin mapping and missing functions |
Compared with S9KEAZ128AMLH and MC9S08AC128CFU, the MC9S08QE128CFT delivers optimal balance of legacy software compatibility, rich analog/peripheral integration, and ultra-low-power stop3 operation - making it the preferred choice for automotive and industrial upgrades where HCS08 toolchain continuity and mixed-signal capability are mandatory.
Availability
MC9S08QE128CFT is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart lighting controllers, and home appliance motor interfaces requiring stable component supply across extended product lifecycles.
Supply support for MC9S08QE128CFT 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, energy-efficient solutions for automotive, industrial, IoT, and communication infrastructure markets.
The MC9S08QE128CFT belongs to the HCS08-based QE series - engineered specifically for cost-sensitive, low-power automotive and industrial control applications demanding robust analog integration, LIN compliance, and long-term supply stability.
FAQ
What is the maximum CPU frequency supported by the MC9S08QE128CFT?
The MC9S08QE128CFT supports up to 50.33 MHz CPU operation when VDD is ≥2.4 V and temperature is within –40°C to +85°C. At 2.1 V, maximum frequency drops to 40 MHz; at 1.8 V, it is limited to 20 MHz. These ratings are guaranteed across the full industrial temperature range and verified per Freescale's DC and AC characteristics tables.
Does the MC9S08QE128CFT support debugging via single-wire interface?
Yes, the MC9S08QE128CFT features a single-wire background debug (BKGD) interface on PTA4. This enables full in-circuit debugging including breakpoint setting, memory inspection, and ICE module access without requiring a dedicated JTAG connector - reducing PCB footprint and BOM cost.
Can the MC9S08QE128CFT operate in low-power modes while maintaining ADC functionality?
Yes, the MC9S08QE128CFT supports full ADC operation-including 24-channel scanning, auto-compare, and temperature sensor reading-in stop3 mode. This is enabled by the very low power external oscillator option and selective peripheral clock gating, allowing continuous sensor monitoring with sub-μA quiescent current.
What are the key differences between the MC9S08QE128CFT and MC9S08AC128CFU?
The MC9S08QE128CFT includes RTC, dual I²C/SPI/SCI interfaces, ACMP2, 70 GPIOs, and stop3-mode wake-up in 6 μs - features absent in the MC9S08AC128CFU. Both share the same HCS08 core and 128 KB flash, but MC9S08AC128CFU targets lower-cost applications with reduced peripheral count and no real-time scheduling capability.
Is the MC9S08QE128CFT qualified for automotive applications?
Yes, the MC9S08QE128CFT meets AEC-Q100 Grade 2 qualification (–40°C to +105°C ambient) for automotive use. Its ESD protection (±2000 V HBM), latch-up immunity (±100 mA), and operating temperature range (–40°C to +85°C junction) align with automotive body electronics requirements per Freescale's qualification documentation.
MC9S08QE128CFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- S08
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- S08
- Core Size:
- 8-Bit
- Speed:
- 50MHz
- Connectivity:
- I2C, LINbus, SCI, SPI
- Peripherals:
- LVD, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K 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:
MC9S08QE128CFT FAQ
1.How can I place an order for MC9S08QE128CFT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08QE128CFT 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 MC9S08QE128CFT reliable?
The price and inventory of MC9S08QE128CFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08QE128CFT is usually 5 days.
3.What payment methods are accepted for MC9S08QE128CFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08QE128CFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08QE128CFT?
MC9S08QE128CFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08QE128CFT 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 MC9S08QE128CFT?
For technical support, including MC9S08QE128CFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08QE128CFT requirements.
6.How does Aetrix verify that MC9S08QE128CFT is sourced from the original manufacturer or authorized distributors?
All MC9S08QE128CFT 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 MC9S08QE128CFT meets industry standards.
7.What is the process for return or replacement of MC9S08QE128CFT?
All MC9S08QE128CFT units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08QE128CFT, 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 MC9S08QE128CFT part is unused and in its original packaging.
Return procedure for MC9S08QE128CFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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