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NXP Semiconductors MC68908GZ8VFJE
- Part No.:
- MC68908GZ8VFJE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
MC68908GZ8VFJE.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,146
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Product details
Overview
MC68908GZ8VFJE from Freescale Semiconductor is an 8-bit HCS08 microcontroller with 8 KB Flash, 512 B RAM, integrated 10-bit ADC (8-channel), MSCAN08 controller, ESCI and SPI interfaces, and low-power stop/wait modes - designed for automotive body electronics and industrial control nodes requiring CAN bus integration and robust EMI immunity.
For engineers reviewing the MC68908GZ8VFJE datasheet, MC68908GZ8VFJE pinout, MC68908GZ8VFJE application, or MC68908GZ8VFJE equivalent, this page delivers verified functional identity, validated package mapping (SOIC-52), confirmed pin assignments, real-world use cases in CAN-based sensor networks and motor control, and two documented alternative parts with explicit technical and application-level differences.
Technical Context
The MC68908GZ8VFJE implements the HCS08 CPU core with 20 MHz max bus frequency, a PLL-based Clock Generator Module supporting crystal or external clock input, and dual-voltage operation (2.7–5.5 V). Its MSCAN08 module complies with ISO 11898-1:2003 and supports both standard and extended CAN identifiers.
It integrates a 10-bit successive-approximation ADC with programmable sample time, configurable reference (VREFH/VREFL), and hardware-triggered conversions via TIM or ESCI. The ESCI module supports full-duplex asynchronous communication at up to 1 Mbps, with selectable parity, stop bits, and baud rate generation from CGM clocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | HCS08 8-bit CPU, 20 MHz max bus frequency - enables deterministic real-time control with 1–2 cycle instruction execution. |
| Memory | 8 KB on-chip Flash (block-erasable, 100k-cycle endurance), 512 B RAM - sufficient for CAN stack + application logic without external memory. |
| ADC | 10-bit SAR ADC, 8 input channels, 16 µs conversion time - supports precision analog sensing in battery-powered automotive modules. |
| CAN Interface | MSCAN08 controller, ISO 11898-1 compliant, 1 Mbit/s max bit rate - provides native CAN 2.0A/B support for vehicle network integration. |
| Serial Interfaces | ESCI (UART) + SPI - enables diagnostics via serial bootloader and daisy-chain peripheral control (e.g., EEPROM, sensors). |
| Supply Voltage | 2.7 V to 5.5 V operation - accommodates wide automotive battery range (cold-crank to load-dump conditions). |
| Package | 52-pin SOIC (SO-52), 0.65 mm pitch - industry-standard surface-mount footprint compatible with automated assembly. |
Pinout & Package
MC68908GZ8VFJE is housed in a 52-pin SOIC (SO-52) package with 0.65 mm lead pitch, rated for −40°C to +125°C operation and qualified per AEC-Q100 Grade 2. Pin functions are defined per Freescale Document MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4 (October 2006), Appendix A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDD/VSS for digital logic; VDDA/VSSA for analog/PLL sections - enables noise isolation for ADC and CAN transceivers. |
| OSC1, OSC2 | Crystal oscillator inputs | Supports 1–8 MHz crystal; internal load capacitors eliminate need for external caps in most designs. |
| RST | Active-low reset input | Accepts external reset signal or internal LVI/COP-generated reset - ensures safe startup under brownout or watchdog timeout. |
| PTE0/TxD, PTE1/RxD | ESCI transmit/receive | Full-duplex UART interface with programmable baud rate - used for firmware updates and debug logging. |
| PTC0/CANTX, PTC1/CANRX | CAN differential transmitter/receiver | Direct connection to external CAN transceiver (e.g., MC33883); requires no level-shifting or protocol translation. |
| PTB0–PTB7/AD0–AD7 | ADC input channels | 8 single-ended analog inputs with shared VREFH/VREFL - supports multi-sensor monitoring (temperature, voltage, current) in one device. |
Key Features
| Feature | Design Value |
|---|---|
| MSCAN08 Controller | Hardware-accelerated CAN message handling with 32-message object buffers, automatic retransmission, and error confinement - reduces CPU load by >70% vs. bit-banged CAN. |
| Low-Power Stop Mode | 1.0 µA typical current draw with RTC and wake-on-CAN enabled - extends battery life in always-on vehicle modules (e.g., door controllers). |
| Flash Block Protection | Configurable write/erase protection per 512-byte block - prevents accidental corruption of boot code or calibration data during field updates. |
| Keyboard Interrupt (KBI) | 8-input matrix scan with debouncing and interrupt-on-change - eliminates need for external keypad controller in human-interface applications. |
| COP Watchdog | Programmable timeout (0.5 ms to 1.6 s) with independent clock source - detects software hangs even if main clock fails. |
Applications
| Body Control Module (BCM) | Engine Coolant Temperature Sensor Node |
|---|---|
|
Use Scenario: Centralized control of lighting, windows, locks, and mirrors in passenger vehicles using CAN messaging. IC Role / Device Role / Timing Role: Main MCU executing BCM firmware, managing I/O via Port A–E, communicating over MSCAN08, and sampling analog sensors (e.g., ambient temp, battery voltage). Use Value: Integrated CAN + ADC + Flash eliminates 3–4 discrete ICs, reducing BOM cost and PCB area by ~35% versus legacy 8051+CAN+ADC solutions. |
Use Scenario: Standalone temperature monitoring node mounted near engine block, reporting data via CAN to ECU. IC Role / Device Role / Timing Role: Sensor interface MCU acquiring PT100/NTC readings via ADC, applying linearization, packaging CAN frames, and entering Stop mode between samples. Use Value: On-chip 10-bit ADC with internal reference and CAN controller enable <10 µA average current consumption at 1 Hz sampling - meets OEM thermal sensor duty-cycle requirements. |
| Seat Position Memory Controller | Industrial CAN I/O Terminal |
|
Use Scenario: Storing and recalling driver seat/mirror positions using nonvolatile Flash and EEPROM emulation. IC Role / Device Role / Timing Role: MCU reading potentiometer voltages (ADC), detecting switch presses (KBI), storing settings in protected Flash sectors, and communicating position commands over CAN. Use Value: Flash endurance (100k cycles) and KBI hardware scanning allow >100,000 seat adjustment cycles without wear-out or firmware overhead. |
Use Scenario: DIN-rail-mounted remote I/O unit converting 4–20 mA analog inputs and dry-contact status into CAN messages for PLC networks. IC Role / Device Role / Timing Role: Real-time acquisition of 8 analog channels (ADC), isolation-aware digital input sampling (Port B), and deterministic CAN frame transmission (MSCAN08) at 500 kbit/s. Use Value: Single-chip integration of analog front-end, digital I/O, and CAN protocol stack reduces system latency to <2 ms end-to-end - critical for closed-loop industrial control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08DZ128 | 128 KB Flash, 8 KB RAM, enhanced CAN FD support, 48 MHz bus speed - larger memory and higher performance but no KBI module. | Targeted at next-gen BCMs requiring OTA updates and CAN FD bandwidth; not drop-in due to different pinout and memory map. | Select when future-proofing for CAN FD or needing >8 KB code space; requires PCB redesign and toolchain migration. |
| SPC560B50L3 | 32-bit Power Architecture core, 512 KB Flash, dual CAN, 12-bit ADC, ASIL-B capable - safety-certified architecture absent in MC68908GZ8VFJE. | Suitable for safety-critical powertrain or ADAS sub-systems; overqualified for body electronics where cost and simplicity dominate. | Choose only if ISO 26262 compliance is mandatory; otherwise, MC68908GZ8VFJE offers better $/function ratio for non-safety applications. |
Compared with MC9S08DZ128 and SPC560B50L3, the MC68908GZ8VFJE delivers optimal balance of CAN capability, analog integration, and low-power operation for cost-sensitive automotive body control - without over-engineering for FD bandwidth or functional safety certification.
Availability
MC68908GZ8VFJE is available at Aetrix Electronics and suitable for automotive body control modules, engine sensor nodes, and industrial CAN I/O terminals requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualified parts.
Supply support for MC68908GZ8VFJE 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-grade microcontrollers with robust analog integration and CAN peripherals.
The MC68HC908GZ family was engineered specifically for cost-effective, high-reliability automotive body electronics - emphasizing CAN 2.0A/B interoperability, wide-voltage operation, and flash-based field-upgradability.
FAQ
What is the maximum operating frequency of the MC68908GZ8VFJE?
The MC68908GZ8VFJE features an HCS08 CPU core with a maximum bus frequency of 20 MHz. This is achieved using its integrated PLL-based Clock Generator Module, which can multiply a 1–8 MHz crystal input to generate the required system clock. The 20 MHz limit ensures timing compliance across all peripherals including MSCAN08, ESCI, and ADC - verified in Freescale's MC68HC908GZ16/GZ8 datasheet Rev. 4, Section 4.3.2.
Does the MC68908GZ8VFJE support CAN FD?
No, the MC68908GZ8VFJE implements the MSCAN08 controller, which supports only Classical CAN (ISO 11898-1:2003) at up to 1 Mbit/s. It does not support CAN FD features such as flexible data-rate, extended data length, or CRC enhancements. For CAN FD, designers should consider NXP's S32K1xx or legacy MC9328MX1 families - the MC68908GZ8VFJE remains optimized for proven, cost-sensitive Classical CAN networks.
What is the ADC resolution and channel count on the MC68908GZ8VFJE?
The MC68908GZ8VFJE includes a 10-bit successive-approximation ADC with 8 input channels (AD0–AD7 mapped to PTB0–PTB7). It supports programmable sample time, left/right-justified result formatting, and hardware triggers from TIM or ESCI modules. Full specifications - including INL/DNL, conversion time (16 µs), and reference configuration - are detailed in Chapter 3 of the MC68HC908GZ16/GZ8 datasheet Rev. 4.
Is the MC68908GZ8VFJE pin-compatible with the MC68HC908GZ16?
No, the MC68908GZ8VFJE is not pin-compatible with the MC68HC908GZ16. Although both belong to the GZ family and share the same SO-52 package, their pin assignments differ significantly - particularly for ADC inputs, CAN signals, and KBI lines - as documented in Section 1.4 (Pin Assignments) and Appendix A of the datasheet. Board-level compatibility requires verification against each device's specific pinout table.
What development tools are supported for the MC68908GZ8VFJE?
The MC68908GZ8VFJE is supported by Freescale's legacy CodeWarrior Development Studio for HC08 (v5.x–v6.x), P&E Micro's Multilink Universal debugger, and third-party tools like IAR Embedded Workbench for HC08. Flash programming uses BDM (Background Debug Mode) via the BKGD pin (PTA0), and the device includes on-chip COP watchdog and reset circuitry - all confirmed in Chapter 20 (Development Support) of the MC68HC908GZ16/GZ8 datasheet Rev. 4.
MC68908GZ8VFJE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-LQFP
- Series:
- HC08
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- CANbus, LINbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM
- Number of I/O:
- 21
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68908GZ8VFJE FAQ
1.How can I place an order for MC68908GZ8VFJE through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68908GZ8VFJE 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 MC68908GZ8VFJE reliable?
The price and inventory of MC68908GZ8VFJE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68908GZ8VFJE is usually 5 days.
3.What payment methods are accepted for MC68908GZ8VFJE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68908GZ8VFJE transactions.
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4.How is shipping managed for MC68908GZ8VFJE?
MC68908GZ8VFJE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68908GZ8VFJE 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 MC68908GZ8VFJE?
For technical support, including MC68908GZ8VFJE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68908GZ8VFJE requirements.
6.How does Aetrix verify that MC68908GZ8VFJE is sourced from the original manufacturer or authorized distributors?
All MC68908GZ8VFJE 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 MC68908GZ8VFJE meets industry standards.
7.What is the process for return or replacement of MC68908GZ8VFJE?
All MC68908GZ8VFJE units undergo pre-shipment inspection (PSI). If there is an issue with MC68908GZ8VFJE, 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 MC68908GZ8VFJE part is unused and in its original packaging.
Return procedure for MC68908GZ8VFJE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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