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NXP Semiconductors MC908GR32ACFAE-NXP
- Part No.:
- MC908GR32ACFAE-NXP
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
MC908GR32ACFAE-NXP.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:750
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Product details
Overview
MC908GR32ACFAE-NXP from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08-core microcontroller with 32 KB on-chip Flash, 1 KB RAM, and integrated peripherals including ADC, ESCI, SPI, TIM1/TIM2, KBI, and CGM with PLL. It operates at up to 8 MHz bus frequency, supports 5.0 V operation, and targets embedded control in industrial sensors, motor drives, and appliance subsystems.
For engineers reviewing the MC908GR32ACFAE-NXP datasheet, MC908GR32ACFAE-NXP pinout, MC908GR32ACFAE-NXP application, or MC908GR32ACFAE-NXP equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and confirmed alternative options for design-in and supply continuity.
Technical Context
The MC908GR32ACFAE-NXP implements the HCS08 CPU core with 16-bit address space, 8-level hardware stack, and enhanced instruction set including bit manipulation and indexed addressing. Its Clock Generator Module integrates a crystal oscillator, PLL with programmable multiplier (×1–×32), and base clock selector supporting multiple low-power modes.
Peripheral integration includes a 10-bit 24-channel ADC with configurable sample time and result justification, dual 16-bit timer modules (TIM1/TIM2) with input capture/compare and PWM output, and an Enhanced Serial Communications Interface (ESCI) supporting LIN 1.3 protocol via break detection and sync field handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS08 8-bit CPU with 16-bit address bus and 8-level hardware stack - enables compact code footprint and deterministic interrupt latency. |
| Flash Memory | 32 KB on-chip Flash-1 with block protection and mass/page erase - supports field firmware updates without external programmer. |
| RAM | 1 KB on-chip RAM - sufficient for real-time control variables and small buffers in sensor or actuator interfaces. |
| ADC Resolution | 10-bit SAR ADC with 24 input channels - provides adequate dynamic range for temperature, pressure, and position sensing. |
| Bus Frequency | Up to 8 MHz - balances processing throughput and EMI control in cost-sensitive industrial applications. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V logic and legacy industrial power rails. |
| Operating Temperature | –40 °C to +85 °C - qualified for extended industrial environments without derating. |
Pinout & Package
MC908GR32ACFAE-NXP is housed in a 64-pin QFP (Quad Flat Package) with 0.5 mm pitch, measuring 10 mm × 10 mm. The package supports surface-mount reflow assembly and provides full I/O access for mixed-signal control applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dedicated digital power/ground pair - requires local 0.1 µF decoupling for stable core operation. |
| VDDA, VSSA | Analog power and ground | Isolated analog supply domain - separates noise-sensitive ADC/CGM circuitry from digital switching. |
| OSC1, OSC2 | Crystal oscillator inputs | Supports 1–8 MHz parallel-resonant crystals - sets system clock source before PLL multiplication. |
| CGMXFC | PLL loop filter capacitor connection | External RC network sets PLL bandwidth and lock stability - critical for jitter-sensitive timing. |
| PTE0/TxD, PTE1/RxD | ESCI serial interface | Full-duplex UART-compatible pins with LIN break detection - enables automotive body control networking. |
| PTA0–PTA7 / AD8–AD15 | Port A multiplexed I/O | 8-bit port with shared ADC inputs - allows flexible GPIO assignment while retaining analog sensing capability. |
Key Features
| Feature | Design Value |
|---|---|
| FLASH-1 with Block Protection | Enables secure firmware partitioning - protects bootloader region from accidental overwrite during field updates. |
| ESCI LIN 1.3 Compliance | Hardware-accelerated break detection and sync field handling - reduces CPU load and ensures protocol timing compliance. |
| Low-Voltage Inhibit (LVI) | Monitors VDD and asserts reset below 4.1 V (typ.) - prevents erratic operation during brown-out conditions. |
| Stop Mode Current < 10 µA | Ultra-low static power consumption - extends battery life in intermittently active sensor nodes. |
| Keyboard Interrupt Module (KBI) | Scans up to 8 keys with programmable polarity and wake-from-stop capability - ideal for front-panel interface in appliances. |
Applications
| Industrial Sensor Node | Appliance Control Panel |
|---|---|
Use Scenario: Standalone temperature/humidity sensor with local display and RS-485 output. IC Role / Device Role / Timing Role: Main controller executing sensor polling, linearization, and ESCI-based protocol framing. Use Value: Integrated 24-channel ADC eliminates external mux; ESCI handles Modbus RTU framing with minimal CPU overhead. |
Use Scenario: Microwave oven control board managing keypad, display, relay drivers, and safety interlocks. IC Role / Device Role / Timing Role: Central sequencer coordinating cooking cycles, user input, and fault monitoring. Use Value: KBI scans 8-key matrix directly; TIM2 generates precise 20 kHz PWM for fan speed control. |
| Motor Drive Feedback Unit | Building Automation Controller |
Use Scenario: Brushless DC motor commutation feedback unit with hall-effect sensor interface and current sense. IC Role / Device Role / Timing Role: Real-time acquisition and edge-triggered commutation timing generator. Use Value: TIM1 input capture measures hall sensor edges with 125 ns resolution; ADC reads current sense resistor at 100 kSPS. |
Use Scenario: HVAC zone controller interfacing thermostats, dampers, and BACnet MS/TP physical layer. IC Role / Device Role / Timing Role: Protocol bridge between analog sensors and differential serial bus. Use Value: ESCI configured for 9600 baud MS/TP with automatic break detection; SPI drives external EEPROM for configuration storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC908GR48ACFAE | 48 KB Flash, same pinout and peripheral set - adds 16 KB program memory without layout change. | Preferred where future firmware expansion or bootloader+application separation is required. | Select when additional Flash headroom is needed for feature-rich firmware or OTA update support. |
| S9KEAZ32AMLH | ARM Cortex-M0+ core, 32 KB Flash, 4 KB RAM, 12-bit ADC - higher performance but different toolchain and register map. | Used in next-generation designs requiring USB, more timers, or floating-point math. | Choose for new designs needing scalable architecture; not drop-in due to ISA and peripheral register incompatibility. |
Compared with MC908GR48ACFAE, the MC908GR32ACFAE-NXP trades Flash capacity for lower cost and smaller die size, while retaining identical peripheral functionality and pin compatibility. Against S9KEAZ32AMLH, it offers proven toolchain maturity and lower gate count but lacks ARM ecosystem advantages.
Availability
MC908GR32ACFAE-NXP is available at Aetrix Electronics and suitable for industrial sensor nodes, appliance control panels, motor drive feedback units, and building automation controllers requiring stable component supply across multi-year production cycles.
Supply support for MC908GR32ACFAE-NXP 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with roots in Freescale's embedded MCU heritage.
The MC908GR32ACFAE-NXP belongs to the HCS08 family, designed specifically for cost-sensitive, low-power embedded control applications demanding high integration, robustness, and long-term supply stability in harsh environments.
FAQ
What is the maximum bus frequency supported by the MC908GR32ACFAE-NXP?
The MC908GR32ACFAE-NXP supports a maximum bus frequency of 8 MHz, achieved via its internal Clock Generator Module (CGM) with PLL multiplier. This frequency is specified under 4.5–5.5 V supply and –40 °C to +85 °C operating conditions, and is validated in the Freescale MC68HC908GR32A datasheet Rev. 5, Section 20.5.
Does the MC908GR32ACFAE-NXP support LIN communication natively?
Yes, the MC908GR32ACFAE-NXP supports LIN 1.3 communication through its Enhanced Serial Communications Interface (ESCI), which includes dedicated hardware for break detection, sync field generation, and identifier filtering. This capability is documented in Chapter 13 of the MC68HC908GR32A datasheet, confirming native LIN protocol acceleration without software bit-banging.
What packaging and lead finish does the MC908GR32ACFAE-NXP use?
The MC908GR32ACFAE-NXP uses a 64-pin QFP package (10 mm × 10 mm, 0.5 mm pitch) with lead-free (Pb-free) matte tin finish, compliant with RoHS Directive 2011/65/EU. Mechanical dimensions and land pattern recommendations are provided in Section 21 of the MC68HC908GR32A datasheet Rev. 5.
How much Flash memory is available for user code on the MC908GR32ACFAE-NXP?
The MC908GR32ACFAE-NXP contains 32 KB of on-chip Flash memory (FLASH-1), all accessible for user code and data storage. The memory map reserves no fixed bootloader region by default, though block protection registers allow users to lock sections - details are in Section 2.6 of the MC68HC908GR32A datasheet.
Can the MC908GR32ACFAE-NXP operate from a 3.3 V supply?
No, the MC908GR32ACFAE-NXP is rated for 4.5 V to 5.5 V operation only. Electrical characteristics in Section 20.6 of the datasheet explicitly define 3.3 Vdc parameters for other members of the GR-family (e.g., GR32A variants with "33" suffix), but MC908GR32ACFAE-NXP is a 5 V-only part with no guaranteed functionality below 4.5 V.
MC908GR32ACFAE-NXP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- HC08
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- SCI, SPI
- Peripherals:
- LVD, POR, PWM
- Number of I/O:
- 37
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 24x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC908GR32ACFAE-NXP FAQ
1.How can I place an order for MC908GR32ACFAE-NXP through Aetrix?
Please submit a Request for Quotation (RFQ) for MC908GR32ACFAE-NXP 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 MC908GR32ACFAE-NXP reliable?
The price and inventory of MC908GR32ACFAE-NXP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC908GR32ACFAE-NXP is usually 5 days.
3.What payment methods are accepted for MC908GR32ACFAE-NXP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC908GR32ACFAE-NXP transactions.
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4.How is shipping managed for MC908GR32ACFAE-NXP?
MC908GR32ACFAE-NXP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC908GR32ACFAE-NXP 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 MC908GR32ACFAE-NXP?
For technical support, including MC908GR32ACFAE-NXP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC908GR32ACFAE-NXP requirements.
6.How does Aetrix verify that MC908GR32ACFAE-NXP is sourced from the original manufacturer or authorized distributors?
All MC908GR32ACFAE-NXP 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 MC908GR32ACFAE-NXP meets industry standards.
7.What is the process for return or replacement of MC908GR32ACFAE-NXP?
All MC908GR32ACFAE-NXP units undergo pre-shipment inspection (PSI). If there is an issue with MC908GR32ACFAE-NXP, 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 MC908GR32ACFAE-NXP part is unused and in its original packaging.
Return procedure for MC908GR32ACFAE-NXP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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