My Inquiry
My Account
NXP Semiconductors MC68HC908GZ16CFA
- Part No.:
- MC68HC908GZ16CFA
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
MC68HC908GZ16CFA.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,299
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC68HC908GZ16CFA from Freescale Semiconductor is an 8-bit HCS08-core microcontroller with 16 KB on-chip Flash memory, 512 B RAM, and integrated CAN 2.0A/B controller (MSCAN08), ADC (8-channel, 10-bit), ESCI, SPI, and TIM modules. It operates at up to 8 MHz bus frequency with internal PLL clock generation and supports automotive-grade temperature range (–40°C to +125°C) in a 64-pin LQFP package.
For engineers reviewing the MC68HC908GZ16CFA datasheet, MC68HC908GZ16CFA pinout, MC68HC908GZ16CFA application, or MC68HC908GZ16CFA equivalent, this page delivers verified technical context, validated pin functions, real-world use cases in CAN-based control systems, and confirmed alternative parts for migration or sourcing continuity.
Technical Context
The MC68HC908GZ16CFA integrates the CPU08 core with 16 KB Flash (block-erasable, programmable in-system), 512 B RAM, and a dedicated MSCAN08 module supporting both standard and extended CAN frames with message buffering and automatic retransmission. Its Clock Generator Module (CGM) includes a crystal oscillator input, PLL with programmable multiplier (×1 to ×32), and VCO range selection for stable 8 MHz bus operation.
Peripheral integration includes an 8-channel 10-bit ADC with configurable sample time and result justification, dual serial interfaces (ESCI for UART/lin-compatible communication and SPI for master/slave device interfacing), and a flexible Timer Interface Module (TIM) with input capture, output compare, and PWM generation - all synchronized to the CGM-derived system clock.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | CPU08 8-bit CISC core with 16 MB linear address space and 24-bit instruction set |
| Flash Memory | 16 KB on-chip SuperFlash® with block protection, mass erase, and in-application programming capability |
| RAM Size | 512 bytes static RAM with retention during Stop mode |
| CAN Controller | MSCAN08 module compliant with ISO 11898-1:2003, supporting 11-bit standard and 29-bit extended identifiers |
| ADC Resolution | 10-bit successive approximation ADC with 8 analog inputs, ±1 LSB INL/DNL, and software-selectable conversion speed |
| Max Bus Frequency | 8 MHz derived from PLL (e.g., 4 MHz crystal ×2 multiplier), enabling deterministic real-time response in control loops |
| Operating Voltage | 4.5 V to 5.5 V DC supply, qualified for automotive battery environments with brown-out detection |
| Temperature Range | –40°C to +125°C ambient, specified for under-hood automotive applications and industrial motor control |
Pinout & Package
MC68HC908GZ16CFA is housed in a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments are defined per Freescale Document MC68HC908GZ16 Rev. 4.0, Sections 1.4–1.5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: digital (VDD/VSS) and analog (VDDAD/VSSAD) for noise isolation in mixed-signal operation |
| OSC1, OSC2 | Crystal oscillator input/output | Supports external 4 MHz crystal; internal amplifier enables low-cost timing without external components |
| RST | Active-low reset input | Asynchronous reset with internal pull-up; accepts external watchdog or power-on reset signals |
| PTE0/TxD, PTE1/RxD | ESCI serial interface | Full-duplex UART-compatible I/O with programmable baud rate and LIN 2.0 support |
| PTC0/CANTX, PTC1/CANRX | CAN transceiver interface | Dedicated differential CAN bus pins routed directly to MSCAN08 module with internal filtering and slew-rate control |
| PTD0/SS, PTD1/MOSI, PTD2/MISO, PTD3/SCK | SPI interface | Four-wire master/slave SPI port with independent chip select (SS) and configurable clock polarity/phase |
| PTA0–PTA7/KBDx | Keyboard interrupt inputs | 8-bit scanned keyboard interface with debouncing and wake-from-Stop capability |
| PTB0–PTB7/ADx | ADC analog inputs | Eight single-ended analog input channels shared with Port B; support external reference (VREFH/VREFL) |
Key Features
| Feature | Design Value |
|---|---|
| MSCAN08 CAN Controller | Hardware-accelerated CAN 2.0A/B with 15 message buffers, automatic ID filtering, and error confinement for robust vehicle network nodes |
| In-System Programmable Flash | 16 KB SuperFlash® with 100K-cycle endurance and 10-year data retention enables field firmware updates without socketing |
| Low-Power Stop Mode | Current draw <10 µA with RTC disabled and RAM retention - critical for battery-backed telematics and sensor nodes |
| Integrated PLL Clock Generation | Configurable ×1–×32 multiplication with VCO range selection allows precise 8 MHz bus clock from low-cost 4 MHz crystal |
| Computer Operating Properly (COP) | Watchdog timer with selectable timeout (0.5 ms to 1.0 s) and disable-on-debug feature for safe embedded control execution |
| Enhanced Serial Communications Interface (ESCI) | UART/LIN-capable interface with break detection, automatic wakeup, and 13-bit break character generation for automotive diagnostics |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Sensor Interface |
|---|---|
Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC in modern vehicles using CAN bus communication. IC Role / Device Role / Timing Role: MC68HC908GZ16CFA acts as the primary CAN node controller, executing real-time command arbitration and status reporting with deterministic latency. Use Value: Integrated MSCAN08 eliminates external CAN controller IC, reducing BOM count and PCB area while ensuring ISO 11898 compliance. | Use Scenario: Acquisition and preprocessing of engine temperature, throttle position, and oxygen sensor signals before transmission to main ECU. IC Role / Device Role / Timing Role: MC68HC908GZ16CFA serves as a distributed sensor signal conditioner with 10-bit ADC sampling at ≤10 kSPS and CAN message packaging. Use Value: On-chip ADC with programmable gain and sample-and-hold ensures accurate analog front-end performance without external op-amps or converters. |
| Industrial Motor Drive Monitor | Commercial Vehicle Telematics Node |
Use Scenario: Real-time monitoring of motor current, voltage, and thermal sensors in HVAC compressors or conveyor drives. IC Role / Device Role / Timing Role: MC68HC908GZ16CFA executes fault detection logic, triggers PWM shutdown via TIM outputs, and reports status over CAN. Use Value: Hardware TIM module with input capture and output compare enables sub-microsecond response to overcurrent events. | Use Scenario: GPS-assisted fleet tracking unit collecting vehicle speed, brake status, and driver ID via CAN and transmitting via cellular modem. IC Role / Device Role / Timing Role: MC68HC908GZ16CFA functions as a CAN-to-serial bridge with ESCI UART interface to modem and KBI for driver keypad input. Use Value: Keyboard Interrupt Module (KBI) with wake-from-Stop allows low-power keypress detection without continuous polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12DG128CPVE | 16-bit HCS12 core, 128 KB Flash, 8 KB RAM, enhanced CAN (3 modules), higher clock (25 MHz), larger LQFP-112 package | Targeted at complex real-time control requiring multi-CAN networks and larger code footprint | Select when migrating from legacy HC08 to scalable HCS12 platform with backward-compatible peripheral register mapping |
| S9S12G128F0MLH | 16-bit S12X core, 128 KB Flash, 8 KB RAM, XGATE co-processor, CAN FD-ready, 5 V tolerant I/O, QFP-80 package | Designed for next-gen automotive ECUs needing CAN FD bandwidth and hardware acceleration for signal processing | Choose for new designs requiring future-proof CAN FD support and deterministic offload of communications tasks |
Compared with MC68HC908GZ16CFA, the MC9S12DG128CPVE offers greater computational headroom and memory for complex control algorithms, while the S9S12G128F0MLH adds CAN FD readiness and XGATE coprocessing - both require PCB redesign but provide clear upgrade paths for evolving automotive requirements.
Availability
MC68HC908GZ16CFA is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, and commercial vehicle telematics requiring stable component supply across extended product lifecycles.
Supply support for MC68HC908GZ16CFA 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) pioneered automotive and industrial microcontrollers with robust qualification, long-term supply commitment, and broad ecosystem support.
The MC68HC908GZ16CFA belongs to the HCS08 family, designed specifically for cost-sensitive, high-reliability automotive control applications where CAN connectivity, Flash programmability, and extended temperature operation are essential.
FAQ
What is the maximum operating frequency of the MC68HC908GZ16CFA?
The MC68HC908GZ16CFA achieves a maximum bus frequency of 8 MHz. This is generated internally via its Clock Generator Module (CGM) PLL, which can multiply a 4 MHz crystal input by up to ×2. The CPU08 core executes instructions at this bus clock rate, enabling deterministic timing for real-time control loops in automotive and industrial applications. The MC68HC908GZ16CFA datasheet specifies timing parameters only up to 8 MHz under full voltage and temperature range.
Does the MC68HC908GZ16CFA support CAN FD?
No, the MC68HC908GZ16CFA does not support CAN FD. It integrates the MSCAN08 controller, which complies strictly with CAN 2.0A/B (ISO 11898-1:2003) and supports only classical CAN frame formats (11-bit standard and 29-bit extended identifiers) at bit rates up to 1 Mbps. CAN FD functionality requires later-generation controllers such as those in the S12X or S32K families. For MC68HC908GZ16CFA-based systems, protocol-level segmentation or gateway bridging is required to interface with CAN FD networks.
How much Flash memory is available on the MC68HC908GZ16CFA?
The MC68HC908GZ16CFA contains 16 KB of on-chip Flash memory implemented with SuperFlash® technology licensed from SST. This memory is organized into 64-byte pages, supports in-system programming (ISP), and includes hardware-based block protection to prevent accidental overwrite of bootloader or calibration data. Endurance is rated at 100,000 program/erase cycles with 10-year data retention at 85°C - sufficient for field firmware updates in automotive ECUs and industrial controllers.
What development tools are compatible with the MC68HC908GZ16CFA?
The MC68HC908GZ16CFA is supported by Freescale's legacy CodeWarrior Development Studio for HC08 (v5.x and earlier), including assembler, C compiler, simulator, and BDM debugger interface. Hardware debug requires a BDM pod (e.g., DEMO9S08GB60 or USB-BDM-MULTI). While NXP no longer actively develops HC08 toolchains, archived versions remain available for download and are fully functional for maintenance and legacy production. Third-party tools like PE Micro Cyclone Pro also support BDM-based programming and debugging of MC68HC908GZ16CFA.
Is the MC68HC908GZ16CFA pin-compatible with other GZ-series devices?
Yes, the MC68HC908GZ16CFA is pin-compatible with the MC68HC908GZ8CFA (8 KB Flash variant) and MC68HC908GZ12CFA (12 KB Flash), all sharing the same 64-pin LQFP package and identical pinout per Freescale Document MC68HC908GZ16 Rev. 4.0. This allows direct hardware reuse across variants - only Flash size and certain configuration bits differ. However, it is not pin-compatible with non-GZ-series HCS08 devices (e.g., JBxx or QGxx families) due to differing peripheral mappings and power pin arrangements.
MC68HC908GZ16CFA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- HC08
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
- 37
- Program Memory Size:
- 16KB (16K 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68HC908GZ16CFA FAQ
1.How can I place an order for MC68HC908GZ16CFA through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC908GZ16CFA 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 MC68HC908GZ16CFA reliable?
The price and inventory of MC68HC908GZ16CFA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC908GZ16CFA is usually 5 days.
3.What payment methods are accepted for MC68HC908GZ16CFA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC908GZ16CFA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC908GZ16CFA?
MC68HC908GZ16CFA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC908GZ16CFA 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 MC68HC908GZ16CFA?
For technical support, including MC68HC908GZ16CFA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC908GZ16CFA requirements.
6.How does Aetrix verify that MC68HC908GZ16CFA is sourced from the original manufacturer or authorized distributors?
All MC68HC908GZ16CFA 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 MC68HC908GZ16CFA meets industry standards.
7.What is the process for return or replacement of MC68HC908GZ16CFA?
All MC68HC908GZ16CFA units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC908GZ16CFA, 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 MC68HC908GZ16CFA part is unused and in its original packaging.
Return procedure for MC68HC908GZ16CFA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC68HC908GZ16CFA Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
