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NXP Semiconductors MC9S08GT32CFD
- Part No.:
- MC9S08GT32CFD
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MC9S08GT32CFD.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,793
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Product details
Overview
MC9S08GT32CFD from NXP (formerly Freescale) is an 8-bit HCS08 core microcontroller with 32 KB Flash, 2 KB RAM, and integrated peripherals including SCI, SPI, IIC, TPM, ATD, and KBI - designed for cost-sensitive industrial control and automotive body electronics applications.
For engineers reviewing the MC9S08GT32CFD datasheet, MC9S08GT32CFD pinout, MC9S08GT32CFD application, or MC9S08GT32CFD equivalent, this page delivers verified package mapping (48-pin QFN), confirmed clock architecture (FLL-based ICG), real-time interrupt capability, low-voltage detect operation, and validated alternative MCU options for migration or sourcing continuity.
Technical Context
The MC9S08GT32CFD implements the HCS08 CPU core with 25 MHz max bus frequency, supported by a flexible Internal Clock Generator (ICG) offering FEI/FBE/FEE modes using internal RC or external crystal (32 kHz to 4 MHz). It integrates a 10-bit ATD converter with 8-channel input multiplexing and hardware trigger support.
Peripheral integration includes two SCI modules (SCI1/SCI2), one SPI, one IIC, two 16-bit TPM timers with PWM/IC/OC capability, and a Keyboard Interrupt (KBI) module on Port A - all operating under unified interrupt vectoring and power management with Stop1/Stop2/Wait modes and LVD reset/interrupt functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | HCS08 8-bit CPU, 25 MHz max bus frequency - enables deterministic real-time control in resource-constrained systems |
| Memory | 32 KB on-chip Flash (with block protection & vector redirection) + 2 KB RAM - supports field firmware updates and data logging |
| ADC | 10-bit ATD with 8 inputs, 7 µs conversion time - suitable for sensor signal acquisition in motor control or climate systems |
| Timers | Two 16-bit TPM modules, each with up to 6 channels - provides PWM generation, input capture, and quadrature decoding |
| Communication | SCI1/SCI2 (UART), SPI, IIC - enables multi-protocol connectivity to sensors, displays, and ECUs |
| Power Management | LVD reset/interrupt, COP watchdog, Stop1/Stop2/Wait modes - ensures robust operation across automotive battery voltage ranges (2.7–5.5 V) |
| Debug | Background Debug Mode (BDM) via single-wire BKGD pin - allows in-circuit programming and real-time debugging without JTAG overhead |
Pinout & Package
MC9S08GT32CFD is housed in a 48-pin QFN (7 × 7 mm, 0.5 mm pitch) package with wettable flanks, optimized for automated optical inspection and thermal performance in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 2.7–5.5 V supply pins with dedicated analog/digital ground separation for noise-sensitive ADC operation |
| PTA0–PTA7 | Port A I/O with KBI | 8-bit general-purpose port supporting keyboard interrupt wake-up from Stop mode on any pin |
| PTB0–PTB7 | Port B I/O with ATD inputs | 8-bit port with configurable analog inputs for ATD channel selection (AN0–AN7) |
| PTC0–PTC7 | Port C I/O with SCI2/IIC | Supports SCI2 transmit/receive and IIC SDA/SCL functions; includes high-current drive capability |
| PTD0–PTD7 | Port D I/O with TPM1/TPM2 | Maps to TPM1 and TPM2 channel I/O (TPM1CH0–TPM1CH5, TPM2CH0–TPM2CH1) for PWM output or capture |
| PTE0–PTE7 | Port E I/O with SCI1/SPI | SCI1 TX/RX and SPI MOSI/MISO/SCK/SS signals - enables primary serial communication interface |
| PTF0–PTF7 | Port F I/O with high-current drivers | Up to 20 mA sink/source per pin - drives LEDs, relays, or small solenoids directly |
| PTG0 | BKGD/MS | Single-wire Background Debug pin - used for programming, debugging, and mode selection during reset |
| EXTAL/XTAL | Crystal oscillator interface | Supports 32 kHz watch crystal or 4 MHz main crystal; enables precise timing for RTI and communication baud rates |
Key Features
| Feature | Design Value |
|---|---|
| FLL-based Internal Clock Generator | Enables stable bus clock derivation from low-cost 32 kHz crystal or RC oscillator - eliminates need for external clock source in cost-sensitive designs |
| Flash Memory with Security | 32 KB Flash with user-configurable protection blocks and security byte prevents unauthorized read-out of firmware |
| Low-Voltage Detect (LVD) | Programmable trip points (2.5 V / 2.8 V / 3.0 V / 3.3 V) with reset or interrupt output - ensures safe shutdown during brownout conditions |
| Real-Time Interrupt (RTI) | Configurable periodic interrupt from 1.0 ms to 1.0 s using internal reference - replaces external timer ICs in supervisory functions |
| Background Debug Mode (BDM) | Single-pin debug interface with full memory access, register visibility, and breakpoint support - reduces development tool cost and board space |
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 platforms. IC Role / Device Role / Timing Role: Main system controller executing CAN-linked command logic, managing local PWM dimming, and monitoring switch inputs via KBI. Use Value: Integrated ATD reads potentiometer position feedback; TPM generates precise 20 kHz PWM for silent motor control; LVD ensures fail-safe behavior during battery voltage sag. | Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and CO₂ via analog and digital sensors in factory settings. IC Role / Device Role / Timing Role: Low-power data aggregator with scheduled wake-up (RTI), sensor polling (ATD/IIC), and wireless transmission via SCI-connected transceiver. Use Value: Stop2 mode draws <1 µA current; SCI baud rate accuracy maintained by FLL-locked bus clock; KBI enables instant wake-on-button-press. |
| Home Appliance Motor Controller | Medical Diagnostic Handheld |
Use Scenario: Brushless DC motor commutation and speed regulation in washing machine drum drive subsystems. IC Role / Device Role / Timing Role: Real-time commutation sequencer using TPM edge-aligned PWM outputs synchronized to Hall-effect rotor position inputs. Use Value: Dual TPM modules provide independent 3-phase PWM generation; ATD measures motor current for overcurrent protection; BDM enables field firmware patching. | Use Scenario: Portable blood glucose meter requiring accurate analog front-end, button-driven UI, and USB-serial bridge to host PC. IC Role / Device Role / Timing Role: System manager handling strip calibration (ATD), tactile feedback (PTF-driven buzzer), and host communication (SCI1-to-USB bridge IC). Use Value: 10-bit ATD achieves ±1 LSB INL for clinical-grade measurement; KBI debounces mechanical buttons in low-power mode; Flash security protects proprietary algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08AC60CFUE | Same HCS08 core, 60 KB Flash, 4 KB RAM, but uses 64-pin QFP package and lacks IIC module | Better suited for higher-memory applications with more GPIO; not drop-in due to package and peripheral mismatch | Select when larger code footprint and additional I/O are required, and QFP assembly is acceptable |
| S9KEAZN64ACLH | Kinetis E-series ARM Cortex-M0+, 64 KB Flash, 8 KB RAM, 48-pin QFN, native USB and enhanced ADC | Offers higher performance, modern toolchain support, and USB device capability - requires firmware rewrite | Choose for new designs needing future scalability, USB connectivity, or improved computational throughput |
Compared with MC9S08GT32CFD, MC9S08AC60CFUE provides greater memory headroom but sacrifices IIC and increases board area; S9KEAZN64ACLH delivers architectural modernization and USB at the cost of software migration effort and higher BOM cost.
Availability
MC9S08GT32CFD is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance motor controllers, and medical handheld devices requiring stable component supply and long-term lifecycle support.
Supply support for MC9S08GT32CFD 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 applications, with roots in Freescale's embedded MCU legacy.
The MC9S08GT32CFD belongs to the HCS08 family - engineered for cost-effective, low-power 8-bit control in automotive body electronics and industrial automation where deterministic timing and peripheral integration are critical.
FAQ
What is the maximum bus frequency supported by the MC9S08GT32CFD?
The MC9S08GT32CFD supports a maximum bus frequency of 25 MHz, achieved through its Internal Clock Generator (ICG) in FEE mode using an external crystal and FLL engagement. This frequency enables real-time execution of control loops with sub-microsecond instruction timing while maintaining compatibility with standard peripheral timing requirements such as SCI baud rate generation and TPM PWM resolution.
Does the MC9S08GT32CFD include a hardware watchdog timer?
Yes, the MC9S08GT32CFD includes a Computer Operating Properly (COP) watchdog timer with programmable timeout periods. The COP module monitors software execution integrity and triggers a system reset if the watchdog is not serviced within the configured interval - a critical feature for automotive and industrial safety-critical applications where runtime fault detection is mandatory.
Can the MC9S08GT32CFD operate from a 32 kHz watch crystal alone?
Yes, the MC9S08GT32CFD can operate using only a 32 kHz crystal connected to EXTAL/XTAL pins in FEI mode, where the FLL multiplies the reference to generate the system bus clock. This configuration supports low-power real-time interrupt timing and maintains accurate baud rates for SCI communication without requiring a high-frequency crystal, reducing BOM cost and board space.
What debug interface does the MC9S08GT32CFD use?
The MC9S08GT32CFD uses Background Debug Mode (BDM) via the PTG0 pin as a single-wire debug interface. This allows full in-circuit programming, register inspection, memory read/write, and breakpoint-based debugging without requiring additional pins or external debug adapters beyond a compatible BDM pod - simplifying development and field service workflows.
Is Flash memory security enabled by default on the MC9S08GT32CFD?
No, Flash memory security is not enabled by default on the MC9S08GT32CFD. Security must be explicitly activated by writing to the Flash Options Register (FOPT) and setting the SEC bits during programming. Once secured, unsecured read access to Flash is blocked, and only mass erase via BDM can restore full access - providing controlled IP protection for deployed firmware.
MC9S08GT32CFD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- S08
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- S08
- Core Size:
- 8-Bit
- Speed:
- 40MHz
- Connectivity:
- I2C, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 39
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S08GT32CFD FAQ
1.How can I place an order for MC9S08GT32CFD through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08GT32CFD 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 MC9S08GT32CFD reliable?
The price and inventory of MC9S08GT32CFD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08GT32CFD is usually 5 days.
3.What payment methods are accepted for MC9S08GT32CFD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08GT32CFD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08GT32CFD?
MC9S08GT32CFD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08GT32CFD 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 MC9S08GT32CFD?
For technical support, including MC9S08GT32CFD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08GT32CFD requirements.
6.How does Aetrix verify that MC9S08GT32CFD is sourced from the original manufacturer or authorized distributors?
All MC9S08GT32CFD 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 MC9S08GT32CFD meets industry standards.
7.What is the process for return or replacement of MC9S08GT32CFD?
All MC9S08GT32CFD units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08GT32CFD, 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 MC9S08GT32CFD part is unused and in its original packaging.
Return procedure for MC9S08GT32CFD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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