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NXP Semiconductors MC908JL16CDWE
- Part No.:
- MC908JL16CDWE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MC908JL16CDWE.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,594
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Product details
Overview
MC908JL16CDWE from Freescale Semiconductor 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 (8-channel), and a 16-bit TIM module. It operates at up to 8 MHz bus frequency with internal clock options and supports low-power Wait/Stop modes. It is used in cost-sensitive embedded control applications such as appliance motor control and industrial sensor interfaces.
For engineers reviewing the MC908JL16CDWE datasheet, MC908JL16CDWE pinout, MC908JL16CDWE application, or MC908JL16CDWE equivalent, key selection criteria include Flash endurance (100k erase/write cycles), 10-bit ADC resolution with programmable sample time, dual serial interface support (SCI + MMIIC), and compatibility with Freescale's HCS08 development tools and CodeWarrior IDE.
Technical Context
The MC908JL16CDWE implements the HCS08 CPU core with enhanced BDM debug support, 16-bit address space, and Harvard architecture for instruction/data separation. Its System Integration Module (SIM) provides flexible clock generation-including internal RC oscillator (31.25 kHz or 4 MHz selectable), XTAL-based operation (up to 8 MHz), and automatic clock recovery after reset.
Peripheral integration includes a 16-bit Timer Interface Module (TIM) with input capture, output compare, and PWM generation; a Serial Communications Interface (SCI) supporting full-duplex asynchronous communication; and a Multi-Master I²C (MMIIC) interface compliant with Philips I²C-bus specification v2.1. The 10-bit ADC supports software- or timer-triggered conversions with configurable reference (VDD or external).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS08 8-bit CPU with 16-bit address bus and enhanced BDM debug interface |
| Flash Memory | 16 KB on-chip Flash with 100,000 erase/write cycles and block protection |
| RAM Size | 512 bytes of on-chip RAM for data storage and stack operations |
| ADC Resolution | 10-bit successive-approximation ADC with 8 analog inputs and programmable sample time |
| Max Bus Frequency | 8 MHz - determines instruction execution speed and peripheral timing margins |
| Supply Voltage | 2.7–5.5 V - enables direct interface with 3.3 V or 5 V logic systems without level shifters |
| Low-Power Modes | Wait and Stop modes with wake-up via IRQ, KBI, SCI, or timer - reduces active current to µA range |
Pinout & Package
MC908JL16CDWE is housed in a 28-pin SOIC (Small Outline Integrated Circuit) package with 24 general-purpose I/O pins, two dedicated oscillator pins (OSC1/OSC2), and power/ground terminals. Pin functions are fully defined in Freescale Document MC68HC908JL16 Rev. 1.1, Section 1.4 (Pin Assignments) and Section 1.5 (Pin Functions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary DC power rails; decoupling capacitor placement critical for noise immunity |
| OSC1, OSC2 | Crystal/resonator connection | Supports external 32.768 kHz crystal for RTC or 1–8 MHz crystal for main system clock |
| PTA0–PTA7 | Port A I/O (8-bit) | Configurable as digital I/O or alternate functions (e.g., KBI, ADC inputs, SCI) |
| PTD0–PTD7 | Port D I/O (8-bit) | Includes TIM1 channel pins (T1CH0/T1CH1) and ADC trigger inputs |
| PTE0–PTE1 | Port E I/O (2-bit) | Supports TIM2 channels (T2CH0/T2CH1) and SCI transmit/receive signals |
| IRQ, RESET | Interrupt and reset inputs | Active-low edge-sensitive interrupt and Schmitt-trigger reset with internal pull-up |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash programming | Enables field firmware updates via BDM without external programmer hardware |
| Integrated 10-bit ADC | Provides sufficient resolution for temperature sensing, battery monitoring, and analog feedback loops |
| Dual serial interfaces | SCI + MMIIC allows simultaneous host communication and peripheral sensor bus management |
| Low-voltage inhibit (LVI) | Prevents erratic operation during brown-out by forcing reset below 2.5 V (typical) |
| Computer Operating Properly (COP) | Watchdog timer with software-selectable timeout prevents lock-up in safety-critical routines |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
Use Scenario: Microcontroller in washing machine control board managing motor drive sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Primary system controller executing real-time state machine logic and ADC-based analog signal acquisition. Use Value: Integrated 10-bit ADC and PWM-capable TIM reduce external component count; 16 KB Flash accommodates feature-rich firmware with diagnostics. |
Use Scenario: Standalone environmental monitor measuring temperature, humidity, and voltage using analog and I²C sensors. IC Role / Device Role / Timing Role: Data aggregator and local decision engine with periodic wake-up from Stop mode via RTC alarm. Use Value: Dual serial interfaces enable concurrent communication with I²C sensors and UART-based telemetry; LVI ensures reliable operation across wide supply ranges. |
| Automotive Body Control | Smart Power Outlet |
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting via LIN or discrete drivers. IC Role / Device Role / Timing Role: Low-cost body electronics MCU handling switch debouncing, PWM dimming, and fault reporting. Use Value: 24 GPIOs support direct switch/sensor interfacing; COP watchdog meets automotive functional safety requirements. |
Use Scenario: Energy-monitoring outlet with relay control, current sensing, and USB-to-serial configuration interface. IC Role / Device Role / Timing Role: Embedded controller performing RMS current calculation, overcurrent shutdown, and host command parsing. Use Value: On-chip Flash supports secure firmware updates; SCI interface enables plug-and-play configuration via PC terminal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC908JL3E | 8 KB Flash, 384 B RAM, same pinout and peripheral set but reduced memory capacity | Suitable for simpler control tasks with smaller code footprint and lower RAM usage | Select when firmware size is under 6 KB and no future feature expansion is planned |
| MC9S08QG4 | 4 KB Flash, 256 B RAM, S08 core (not HCS08), different register map and toolchain support | Limited peripheral set (no MMIIC, only 8-bit ADC); targets ultra-low-cost entry-level designs | Choose only if migrating legacy QG4 designs; not drop-in compatible due to architectural differences |
Compared with MC908JL16CDWE, the MC908JL3E offers identical peripheral functionality at lower memory cost, while the MC9S08QG4 requires significant firmware rework but reduces BOM cost in high-volume simple-control applications.
Availability
MC908JL16CDWE is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, automotive body electronics, and smart power outlet designs requiring stable component supply and long-term manufacturability.
Supply support for MC908JL16CDWE 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) is a global leader in embedded processing solutions, specializing in automotive, industrial, and consumer microcontrollers and analog products.
The MC908JL16CDWE belongs to the HCS08 family, designed specifically for cost-optimized 8-bit control applications requiring Flash programmability, mixed-signal integration, and robust debug capability in small packages.
FAQ
What is the maximum operating frequency of the MC908JL16CDWE?
The MC908JL16CDWE supports a maximum bus frequency of 8 MHz, achieved using either an external crystal (up to 8 MHz) or the internal 4 MHz RC oscillator with optional ×2 PLL multiplication. This frequency defines the timing budget for all peripherals and instruction execution, and must be validated against voltage and temperature conditions per Freescale's Electrical Specifications table.
Does the MC908JL16CDWE support in-circuit debugging?
Yes, the MC908JL16CDWE includes an enhanced Background Debug Mode (BDM) interface compatible with Freescale's BDM pod and CodeWarrior IDE. This allows full read/write access to memory and registers, real-time breakpointing, and single-stepping without requiring dedicated debug pins beyond the standard BDMCLK/BDMIO signals.
Can the MC908JL16CDWE operate from a 3.3 V supply?
Yes, the MC908JL16CDWE operates across a 2.7–5.5 V supply range, making it fully compatible with 3.3 V systems. At 3.3 V, the maximum guaranteed bus frequency is 6 MHz per the datasheet's DC characteristics; operation at 8 MHz requires ≥4.5 V supply.
How many I²C slave addresses can the MC908JL16CDWE support?
The MC908JL16CDWE's MMIIC module supports one programmable 7-bit slave address via the MMADR register. It does not support multiple simultaneous slave addresses, but can act as master or slave in multi-master configurations with arbitration handling per I²C specification v2.1.
Is there hardware support for PWM generation on the MC908JL16CDWE?
Yes, the MC908JL16CDWE's 16-bit Timer Interface Module (TIM) supports both buffered and unbuffered PWM signal generation on PTD4/T1CH0, PTD5/T1CH1, PTE0/T2CH0, and PTE1/T2CH1 pins. PWM period and duty cycle are controlled via modulo and channel registers with independent update timing.
MC908JL16CDWE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Series:
- HC08
- Packaging:
- Tube
- 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:
- 23
- 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 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC908JL16CDWE FAQ
1.How can I place an order for MC908JL16CDWE through Aetrix?
Please submit a Request for Quotation (RFQ) for MC908JL16CDWE 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 MC908JL16CDWE reliable?
The price and inventory of MC908JL16CDWE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC908JL16CDWE is usually 5 days.
3.What payment methods are accepted for MC908JL16CDWE?
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4.How is shipping managed for MC908JL16CDWE?
MC908JL16CDWE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC908JL16CDWE 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 MC908JL16CDWE?
For technical support, including MC908JL16CDWE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC908JL16CDWE requirements.
6.How does Aetrix verify that MC908JL16CDWE is sourced from the original manufacturer or authorized distributors?
All MC908JL16CDWE 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 MC908JL16CDWE meets industry standards.
7.What is the process for return or replacement of MC908JL16CDWE?
All MC908JL16CDWE units undergo pre-shipment inspection (PSI). If there is an issue with MC908JL16CDWE, 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 MC908JL16CDWE part is unused and in its original packaging.
Return procedure for MC908JL16CDWE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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