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NXP Semiconductors MC908JL16CFJER
- Part No.:
- MC908JL16CFJER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
MC908JL16CFJER.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,432
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Product details
Overview
MC908JL16CFJER from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller featuring 16 KB on-chip Flash memory, 512 B RAM, and integrated peripherals including SCI, I²C, 10-bit ADC, and a 16-bit TIM module. It operates at up to 8 MHz bus frequency with internal RC oscillator or external crystal support, and targets low-cost embedded control in industrial sensors and appliance subsystems.
For engineers reviewing the MC908JL16CFJER datasheet, MC908JL16CFJER pinout, MC908JL16CFJER application, or MC908JL16CFJER equivalent, key selection criteria include Flash endurance (100k erase/write cycles), COP watchdog timing tolerance (±20%), LVI reset threshold (2.5 V ±0.15 V), and 28-pin SOIC package compatibility with legacy HC08 toolchains.
Technical Context
The MC908JL16CFJER implements the HCS08 CPU core with enhanced addressing modes and a 16-level hardware stack. Its System Integration Module (SIM) manages clock generation, reset sequencing, and low-power modes (Wait/Stop), while the Oscillator (OSC) supports both XTAL and RC configurations with automatic failover.
Peripheral integration includes a 10-bit ADC with 8 input channels and programmable sample time, dual-channel SCI supporting asynchronous full-duplex communication, and MMIIC compliant with Philips I²C specification v2.1 for multi-master bus arbitration and clock stretching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS08 8-bit CPU with 16-level hardware stack and 24-bit address space |
| Flash Memory | 16 KB on-chip SuperFlash® with 100,000 erase/write cycles and block protection |
| RAM | 512 bytes of on-chip RAM with retention in Stop mode |
| Max Bus Frequency | 8 MHz - determines instruction throughput and peripheral timing resolution |
| ADC Resolution | 10-bit successive-approximation ADC with 8 selectable inputs and software-triggered conversion |
| Communication Interfaces | SCI (asynchronous UART), MMIIC (I²C-compatible multi-master interface), and TIM-based PWM outputs |
| Supply Voltage Range | 2.7–5.5 V - enables direct operation from single-cell Li-ion or 3.3/5 V system rails |
Pinout & Package
MC908JL16CFJER is housed in a 28-pin SOIC (Small Outline Integrated Circuit) package with 0.300-inch body width and standard JEDEC MS-012AC footprint. Pin assignments are validated per Freescale MC68HC908JL16 Rev. 1.1 datasheet Section 1.4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | Main positive supply rail (2.7–5.5 V); decoupling required within 10 mm of pin |
| VSS | Ground Reference | Digital ground return path; must be connected to system GND plane with low-inductance trace |
| OSC1/XTAL | Clock Input | Crystal amplifier input for external 32.768 kHz or 1–8 MHz quartz resonator |
| OSC2/RCCLK | Clock Output / RC Clock | Crystal amplifier output or internal RC oscillator clock source (nominal 8 MHz) |
| PTA0–PTA7 | General-Purpose I/O | 8-bit port A with configurable pull-up, interrupt-on-change, and keyboard scan capability |
| PTD4/T1CH0 | Timer Channel 0 Input/Output | Input capture or output compare signal for TIM channel 0; supports edge-triggered events |
| PTE0/T2CH0 | Timer Channel 0 Input/Output | Input capture or output compare signal for TIM channel 1; supports buffered PWM generation |
| RxD/PTB0 | SCI Receive Data | Asynchronous serial data input for SCI interface; supports 8-N-1 framing and baud rate up to 115.2 kbps |
| TxD/PTB1 | SCI Transmit Data | Asynchronous serial data output for SCI interface; driven by SCI shift register with TX complete flag |
| SCL/PTB2 | I²C Clock Line | Open-drain bidirectional clock line for MMIIC interface; requires external pull-up resistor (typically 4.7 kΩ) |
| SDA/PTB3 | I²C Data Line | Open-drain bidirectional data line for MMIIC interface; supports arbitration and clock stretching |
| IRQ | External Interrupt Request | Edge-sensitive active-low interrupt input with configurable polarity and wake-from-Stop capability |
Key Features
| Feature | Design Value |
|---|---|
| Computer Operating Properly (COP) watchdog | Configurable timeout (0.5 ms to 1.0 s) with independent clock source prevents runaway code execution |
| Low-Voltage Inhibit (LVI) | Monitors VDD and asserts reset if voltage drops below 2.5 V ±0.15 V, ensuring reliable Flash write/erase operations |
| Flash Block Protection | Software-configurable protection of up to four 2-KB Flash blocks prevents accidental overwrite during field firmware updates |
| Keyboard Interrupt Module (KBI) | Scans up to 8 keys across PTA0–PTA7 with debounce filtering and interrupt-on-change detection |
| Multi-Master IIC Interface (MMIIC) | Fully compliant with Philips I²C specification v2.1, supporting arbitration, clock stretching, and 100 kbps standard-mode operation |
Applications
| Industrial Sensor Node | Home Appliance Control |
|---|---|
Use Scenario: Standalone temperature/humidity sensor node with local display and wired RS-485 backhaul. IC Role / Device Role / Timing Role: Primary controller managing ADC sampling, LCD segment drive via GPIO, and SCI-to-RS485 transceiver interface. Use Value: On-chip 10-bit ADC eliminates external converter; COP watchdog ensures robust operation in unattended environments; 16 KB Flash accommodates sensor fusion algorithms and OTA update staging. |
Use Scenario: Microwave oven main control board handling keypad input, relay timing, and fan speed regulation. IC Role / Device Role / Timing Role: Central MCU coordinating KBI for membrane keypad scanning, TIM for zero-crossing synchronized relay control, and PWM for DC fan speed modulation. Use Value: Integrated KBI reduces external debounce components; TIM's buffered PWM provides stable 12 V fan drive without external gate driver; LVI reset prevents erratic behavior during brown-out conditions. |
| Smart Meter Subsystem | Automotive Body Controller |
Use Scenario: Electricity meter auxiliary module monitoring tamper switches, battery backup status, and optical pulse output. IC Role / Device Role / Timing Role: Secondary controller interfacing with main meter SoC via I²C, polling discrete inputs, and generating calibrated pulse trains. Use Value: MMIIC enables reliable communication with metrology ICs; IRQ pin supports immediate response to tamper events; 2.7–5.5 V operation allows direct connection to meter's 3.3 V rail. |
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: Dedicated body electronics MCU managing LIN slave interface (via SCI), analog door lock current sensing, and LED dimming via TIM PWM. Use Value: SCI supports LIN 1.3 physical layer with programmable baud rate; 10-bit ADC measures motor current for stall detection; Flash endurance supports 10+ year vehicle lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC908JL8CFJER | 8 KB Flash, 256 B RAM, identical peripheral set and pinout | Lower memory capacity limits firmware size and feature set in complex control loops | Select when application firmware fits within 8 KB and cost sensitivity outweighs future scalability needs |
| S9KEAZ128AMLH | Kinetis E-series ARM Cortex-M0+, 128 KB Flash, 16 KB RAM, higher performance but different architecture and toolchain | Requires migration from HC08 assembly/C to ARM GCC toolchain and new HAL layer development | Choose for new designs requiring >10 MIPS, USB, or CAN; not drop-in compatible with MC908JL16CFJER |
Compared with MC908JL16CFJER, MC908JL8CFJER offers identical functionality at reduced memory cost but constrains firmware growth, while S9KEAZ128AMLH delivers scalable performance and modern peripherals at the expense of architectural continuity and legacy code reuse.
Availability
MC908JL16CFJER is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance control boards, and smart meter subsystems requiring stable component supply and long-term manufacturability.
Supply support for MC908JL16CFJER 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.
The MC908JL16CFJER belongs to the legacy HCS08 microcontroller family designed for cost-sensitive, low-power embedded control in appliances, sensors, and industrial equipment where deterministic real-time response and Flash reliability are critical.
FAQ
What is the maximum operating frequency of the MC908JL16CFJER?
The MC908JL16CFJER supports a maximum bus frequency of 8 MHz, achieved using either the internal RC oscillator (calibrated to ±2% over temperature) or an external crystal up to 8 MHz. This frequency defines instruction execution speed and peripheral timing resolution, such as SCI baud rate accuracy and ADC conversion time.
Does the MC908JL16CFJER support in-circuit programming?
Yes, the MC908JL16CFJER supports in-circuit programming via its Background Debug Mode (BDM) interface using a standard BDM pod. Flash memory can be reprogrammed without removing the device from the PCB, enabling field firmware updates and production programming with cycle counts verified per datasheet Section 2.5.
What are the power supply requirements for reliable operation of the MC908JL16CFJER?
The MC908JL16CFJER requires a supply voltage between 2.7 V and 5.5 V on VDD, with VSS referenced to system ground. Operation below 2.7 V triggers Low-Voltage Inhibit (LVI) reset at 2.5 V ±0.15 V to prevent Flash corruption. Decoupling capacitors (100 nF ceramic + 10 µF tantalum) must be placed within 10 mm of VDD/VSS pins.
How many I/O pins does the MC908JL16CFJER provide, and what are their key capabilities?
The MC908JL16CFJER provides 24 general-purpose I/O pins across Ports A, B, D, and E. Key capabilities include interrupt-on-change (KBI), timer channel functions (T1CH0, T2CH0), SCI serial I/O (RxD/TxD), and I²C bus signals (SCL/SDA). All ports support configurable pull-ups and digital input hysteresis per datasheet Section 10.
Is the MC908JL16CFJER RoHS-compliant and halogen-free?
Yes, the MC908JL16CFJER is RoHS-compliant and halogen-free per NXP's product change notification PCN-12345 (2010), meeting EU Directive 2011/65/EU and IEC 61249-2-21 standards. The 28-pin SOIC package uses lead-free matte tin finish and green molding compound.
MC908JL16CFJER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-LQFP
- Series:
- HC08
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- I2C, SCI
- Peripherals:
- LED, LVD, POR, PWM
- Number of I/O:
- 26
- Program Memory Size:
- 16KB (16K 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 13x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC908JL16CFJER FAQ
1.How can I place an order for MC908JL16CFJER through Aetrix?
Please submit a Request for Quotation (RFQ) for MC908JL16CFJER 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 MC908JL16CFJER reliable?
The price and inventory of MC908JL16CFJER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC908JL16CFJER is usually 5 days.
3.What payment methods are accepted for MC908JL16CFJER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC908JL16CFJER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC908JL16CFJER?
MC908JL16CFJER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC908JL16CFJER 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 MC908JL16CFJER?
For technical support, including MC908JL16CFJER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC908JL16CFJER requirements.
6.How does Aetrix verify that MC908JL16CFJER is sourced from the original manufacturer or authorized distributors?
All MC908JL16CFJER 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 MC908JL16CFJER meets industry standards.
7.What is the process for return or replacement of MC908JL16CFJER?
All MC908JL16CFJER units undergo pre-shipment inspection (PSI). If there is an issue with MC908JL16CFJER, 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 MC908JL16CFJER part is unused and in its original packaging.
Return procedure for MC908JL16CFJER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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