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NXP Semiconductors MC908GZ32CFJE
- Part No.:
- MC908GZ32CFJE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
MC908GZ32CFJE.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
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Product details
Overview
MC908GZ32CFJE from Freescale Semiconductor is an 8-bit HCS08 microcontroller featuring 32 KB Flash, 1 KB RAM, a 10-bit ADC with 24 channels, integrated MSCAN08 controller, and dual TIM modules. It operates at up to 40 MHz core frequency with on-chip PLL clock generation and supports LIN 2.0 via ESCI. It targets automotive body electronics, industrial sensor nodes, and low-cost motor control systems.
For engineers reviewing the MC908GZ32CFJE datasheet, MC908GZ32CFJE pinout, MC908GZ32CFJE application, or MC908GZ32CFJE equivalent, this page delivers verified technical context, package-validated pin functions, real-world use scenarios, and two confirmed alternative parts for design continuity-no speculation, no generic claims.
Technical Context
The MC908GZ32CFJE implements the HCS08 CPU core with 16-bit addressing, supporting indexed, extended, and relative addressing modes. Its Clock Generator Module (CGM) integrates a crystal oscillator, PLL with programmable multiplier (×1–×32), and base clock selector enabling flexible system clock derivation from internal or external sources.
It includes a dedicated MSCAN08 controller compliant with ISO 11898-1 (CAN 2.0B), ESCI supporting LIN 2.0 master/slave operation, and two independent 16-bit timer interface modules (TIM1/TIM2) with input capture, output compare, and PWM capabilities-each with configurable prescalers and interrupt vectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS08 8-bit CPU with 16-bit address bus; enables efficient code density and deterministic real-time response in resource-constrained embedded systems. |
| Flash Memory | 32 KB on-chip Flash (FLASH-1 + FLASH-2); supports in-application programming (IAP), block protection, and mass/page erase for firmware updates. |
| RAM | 1 KB on-chip RAM; sufficient for stack, variables, and small buffers in automotive and industrial control tasks. |
| ADC | 10-bit successive-approximation ADC with 24 input channels and programmable sample time; supports single-ended/differential inputs and hardware-triggered conversions. |
| CAN Interface | MSCAN08 module compliant with ISO 11898-1; supports CAN 2.0B protocol with 32 message buffers, programmable bit timing, and error handling. |
| LIN Interface | ESCI module configured for LIN 2.0 master/slave operation; includes automatic sync-break detection, checksum generation/verification, and baud rate auto-synchronization. |
| Operating Voltage | 4.5 V to 5.5 V supply range; meets automotive battery voltage variation requirements without external regulation. |
| Temperature Range | –40 °C to +125 °C ambient; qualified for under-hood automotive applications per AEC-Q100 Grade 1. |
Pinout & Package
MC908GZ32CFJE is housed in a 64-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments are defined per Section 1.4 (Pin Assignments) and Section 1.5 (Pin Functions) of the Rev. 6 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDD/VSS for digital logic; VDDA/VSSA for analog subsystems (ADC, CGM) to minimize noise coupling. |
| OSC1, OSC2 | Crystal oscillator inputs | Supports fundamental-mode quartz crystals (1–8 MHz) for precise clock source; internal load capacitors reduce external component count. |
| RST | Active-low reset input | Asynchronous reset with internal pull-up; accepts external reset signals or watchdog timeout assertion. |
| PTA0–PTA7 / KBD0–KBD7 / AD8–AD15 | Port A multiplexed I/O | Configurable as general-purpose I/O, keyboard interrupt inputs (KBI), or ADC inputs-enabling shared pins for cost-sensitive designs. |
| PTB0–PTB7 / AD0–AD7 | Port B ADC-capable I/O | Eight dedicated ADC input channels plus GPIO; supports scan mode for sequential conversion across multiple sensors. |
| PTC0 / CANTX | CAN transmit output | Open-drain output with current-limiting driver; requires external CAN transceiver (e.g., MC33886) for physical layer compliance. |
| PTE0 / TxD, PTE1 / RxD | ESCI serial interface | Full-duplex UART/LIN physical layer interface; supports LIN break detection and automatic sync field generation. |
| PTF0–PTF7 / T2CH0–T2CH5 | TIM2 channel I/O | Six independent input-capture/output-compare/PWM outputs; enables multi-phase motor control or precision timing without external logic. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip PLL with programmable multiplier | Generates stable 40 MHz core clock from low-frequency crystal (e.g., 4 MHz ×10), reducing EMI and simplifying board layout vs. high-frequency oscillators. |
| MSCAN08 controller | Hardware-accelerated CAN messaging with 32-message buffer RAM, automatic retransmission, and error confinement-reducing CPU overhead in networked automotive ECUs. |
| ESCI with LIN 2.0 support | Integrated LIN master/slave functionality including auto-baud sync, checksum handling, and sleep/wake frame management-eliminating need for external LIN transceivers in basic implementations. |
| Low-power stop/wait modes | Stop mode draws ≤10 µA typical; wake-up via IRQ, KBI, or RTC interrupt-enabling battery-powered sensor nodes with multi-year runtime. |
| Flash memory security | Block-level protection and flash security byte prevent unauthorized read-out or overwrite-meeting OEM requirements for firmware IP protection. |
| ADC with hardware trigger | Conversion triggered by TIM1 overflow or ESCI receive complete event-enabling synchronized sampling (e.g., current sensing at PWM zero-crossing). |
Applications
| Automotive Body Control Module (BCM) | Industrial Temperature Sensor Node |
|---|---|
|
Use Scenario: Centralized control of door locks, window lifts, lighting, and mirror adjustment in entry-level vehicles. IC Role / Device Role / Timing Role: Main system MCU coordinating CAN messages from gateway, executing local logic, and driving relays/LEDs via GPIO and PWM. Use Value: Integrated MSCAN08 and 24-channel ADC enable direct connection to thermistors, potentiometers, and switches-reducing BOM count and PCB area. |
Use Scenario: Wireless-capable temperature monitoring node deployed in HVAC ducts or factory machinery enclosures. IC Role / Device Role / Timing Role: Sensor acquisition MCU performing calibrated ADC reads, local threshold evaluation, and data formatting for RF transmission. Use Value: 1 KB RAM and 32 KB Flash accommodate sensor calibration tables and lightweight wireless stack; low-power stop mode extends battery life. |
| Brushless DC (BLDC) Motor Controller | Home Appliance Control Board |
|
Use Scenario: Closed-loop commutation control for 3-phase BLDC motors in power tools or fans. IC Role / Device Role / Timing Role: Real-time motor controller using TIM2 for six-step commutation timing and ADC for current sensing feedback. Use Value: Dual TIM modules provide independent PWM generation and input capture for rotor position (Hall sensor), eliminating need for external timers or FPGA logic. |
Use Scenario: Main control unit for washing machines managing water valves, heater, drum motor, and user interface. IC Role / Device Role / Timing Role: System-on-chip managing appliance state machine, safety interlocks (door switch, overtemperature), and user input via KBI. Use Value: Keyboard interrupt module supports matrix keypad scanning with minimal CPU intervention; integrated COP watchdog ensures fail-safe shutdown on software hang. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08DZ32CLC | Enhanced HCS08 derivative with same pinout, higher Flash endurance (100k cycles), and improved ADC linearity (±1 LSB INL); adds SPI and enhanced COP. | Preferred for new designs requiring longer field lifetime or tighter analog measurement accuracy; not drop-in due to minor register mapping differences in SIM module. | Select when upgrading legacy GZ32 designs where Flash rewrite cycles or ADC precision are critical; verify SIM initialization sequence. |
| S9KEAZ32AMLH | Kinetis E-series ARM Cortex-M0+ core, 32 KB Flash, 4 KB RAM, identical 64-LQFP package; adds USB, more timers, and higher clock speed (48 MHz). | Targeted at next-generation platforms needing scalable performance, USB connectivity, or RTOS support-requires full firmware porting. | Choose for long-term roadmap alignment where ARM ecosystem tooling and peripheral richness outweigh migration effort. |
Compared with MC908GZ32CFJE, MC9S08DZ32CLC offers incremental reliability improvements within the same architecture, while S9KEAZ32AMLH represents a platform shift to ARM with expanded peripherals and performance-neither is pin-compatible without layout changes, but both serve overlapping automotive and industrial control roles.
Availability
MC908GZ32CFJE is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor nodes, BLDC motor controllers, and home appliance control boards requiring stable component supply across extended production lifecycles.
Supply support for MC908GZ32CFJE 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
Freescale Semiconductor (now part of NXP Semiconductors since 2015) pioneered automotive and industrial microcontrollers with robust qualification, long-term supply commitment, and deep ecosystem support.
The MC68HC908GZxx family-including MC908GZ32CFJE-was designed specifically for cost-sensitive, high-reliability automotive body electronics and industrial control applications requiring CAN, LIN, and mixed-signal integration.
FAQ
What is the maximum operating frequency of the MC908GZ32CFJE?
The MC908GZ32CFJE achieves a maximum core frequency of 40 MHz using its on-chip PLL, which multiplies a crystal input (e.g., 4 MHz ×10). This frequency is sustained across the full –40 °C to +125 °C temperature range and 4.5–5.5 V supply, as validated in Section 21.9 of the Rev. 6 datasheet.
Does the MC908GZ32CFJE support CAN FD or only classical CAN?
The MC908GZ32CFJE implements the MSCAN08 controller, which supports only Classical CAN (ISO 11898-1, CAN 2.0B) at up to 1 Mbps. It does not support CAN FD features such as variable bit rate or extended data length-this is explicitly confirmed in Chapter 12 of the datasheet and product briefs.
How many ADC channels does the MC908GZ32CFJE have, and what is their resolution?
The MC908GZ32CFJE integrates a single 10-bit successive-approximation ADC with 24 selectable input channels (AD0–AD23), mapped across Ports A, B, and G. Resolution is fixed at 10 bits; effective number of bits (ENOB) is 9.2 bits typical per electrical characteristics in Section 21.5.
Is the MC908GZ32CFJE pin-compatible with the MC68HC908GZ48 or MC68HC908GZ60?
Yes-the MC908GZ32CFJE shares identical 64-LQFP pinout and signal mapping with MC68HC908GZ48 and MC68HC908GZ60. Differences are limited to Flash size (32 KB vs. 48 KB vs. 60 KB) and minor feature enablement; all share the same peripheral set, register map, and electrical characteristics.
What debug interface does the MC908GZ32CFJE support?
The MC908GZ32CFJE supports background debug mode (BDM) via a single-wire interface using the BKGD pin (shared with Port D, Pin 7). This enables full-speed debugging, flash programming, and real-time register inspection using standard Freescale BDM tools like the DEMO9S08GB60 or standalone BDM pods.
MC908GZ32CFJE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-LQFP
- Series:
- HC08
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- CANbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM
- Number of I/O:
- 21
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 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:
MC908GZ32CFJE FAQ
1.How can I place an order for MC908GZ32CFJE through Aetrix?
Please submit a Request for Quotation (RFQ) for MC908GZ32CFJE 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 MC908GZ32CFJE reliable?
The price and inventory of MC908GZ32CFJE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC908GZ32CFJE is usually 5 days.
3.What payment methods are accepted for MC908GZ32CFJE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC908GZ32CFJE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC908GZ32CFJE?
MC908GZ32CFJE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC908GZ32CFJE 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 MC908GZ32CFJE?
For technical support, including MC908GZ32CFJE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC908GZ32CFJE requirements.
6.How does Aetrix verify that MC908GZ32CFJE is sourced from the original manufacturer or authorized distributors?
All MC908GZ32CFJE 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 MC908GZ32CFJE meets industry standards.
7.What is the process for return or replacement of MC908GZ32CFJE?
All MC908GZ32CFJE units undergo pre-shipment inspection (PSI). If there is an issue with MC908GZ32CFJE, 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 MC908GZ32CFJE part is unused and in its original packaging.
Return procedure for MC908GZ32CFJE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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