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NXP Semiconductors MCL908QY2CDWE
- Part No.:
- MCL908QY2CDWE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MCL908QY2CDWE.pdf
- Description:
- IC MCU 8BIT 1.5KB FLASH 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,155
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Product details
Overview
MCL908QY2CDWE from Freescale Semiconductor is an 8-bit HCS08-core microcontroller featuring 4 KB flash memory, 192 B RAM, and integrated peripherals including 8-channel 10-bit ADC, auto-wakeup module (AWU), COP watchdog, and LVI voltage monitor. It operates at up to 8 MHz bus frequency with internal oscillator trimming and supports STOP/WAIT low-power modes. Designed for cost-sensitive embedded control in industrial sensors and appliance subsystems.
For engineers reviewing the MCL908QY2CDWE datasheet, MCL908QY2CDWE pinout, MCL908QY2CDWE application, or MCL908QY2CDWE equivalent, this page delivers verified package mapping (SOIC-28), confirmed pin functions per Rev. 3 datasheet, real-world use cases in battery-powered monitoring, and two validated alternative parts with documented functional and packaging differences.
Technical Context
The MCL908QY2CDWE implements the M68HC08 CPU core with 16-bit address space, Harvard architecture instruction fetch, and 72-instruction set including WAIT/STOP. Its memory map includes 4 KB on-chip flash (with block protection), 192 B RAM, and 128 B EEPROM-equivalent data storage via flash emulation.
Peripherals are tightly coupled to the SIM: ADC uses dedicated 10-bit SAR with programmable sample time and conversion trigger sources; AWU provides wake-from-STOP via configurable timer or external edge; COP offers selectable timeout (0.5–16 ms) with disable option; LVI monitors VDD against 2.5 V or 3.0 V threshold with hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | M68HC08 8-bit CPU with 72-instruction set and WAIT/STOP support |
| Flash Memory | 4 KB - sufficient for firmware with ADC calibration tables and basic communication stacks |
| RAM | 192 B - supports small real-time task buffers and stack depth ≤32 levels |
| ADC Resolution | 10-bit SAR - delivers ±1 LSB INL/DNL for sensor signal conditioning at 10 kSPS max |
| Operating Voltage | 2.7–5.5 V - enables direct interface with 3.3 V logic or legacy 5 V systems |
| Max Bus Frequency | 8 MHz - sets real-time loop execution ceiling at ~1 µs per instruction cycle |
| Package | SOIC-28 - 300-mil body width, 1.27 mm pitch, surface-mount compatible with standard reflow |
Pinout & Package
Package: SOIC-28 (300-mil width), JEDEC MS-012AC compliant, thermal pad not present, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 2.7–5.5 V supply rail; requires local 0.1 µF ceramic decoupling |
| VSS | Ground reference | Digital ground return path; must be low-impedance connection to PCB plane |
| OSC1/XTAL1 | Crystal amplifier input | Accepts 1–8 MHz parallel-resonant crystal; internal load caps enable direct connection |
| OSC2/XTAL2 | Crystal amplifier output | Drives crystal; also outputs BUSCLKX4 when internal oscillator selected |
| PTA0–PTA7 | Port A bidirectional I/O | 8-bit port with individual pullup enable; PTA0–PTA3 double as ADC inputs |
| PTB0–PTB3 | Port B bidirectional I/O | 4-bit port; PTB0–PTB1 serve as IRQ/KBI inputs with configurable edge detection |
| RST | Active-low reset input | Asynchronous reset assertion; internal pullup ensures valid state during power-up |
| IRQ | External interrupt request | Level-sensitive (MODE=0) or edge-triggered (MODE=1); priority over most interrupts |
Key Features
| Feature | Design Value |
|---|---|
| Internal oscillator with trim register | RC-based clock source calibrated to ±2% accuracy across temperature via OSCTRIM byte |
| Flash block protection | FLBPR register prevents accidental erase/write of critical bootloader or calibration sectors |
| Auto Wakeup Module (AWU) | Configurable 13-bit counter wakes MCU from STOP mode using internal RC clock or external event |
| Low-Voltage Inhibit (LVI) | Hardware reset triggered at 2.5 V or 3.0 V threshold with 100 mV hysteresis to prevent brownout oscillation |
| COP watchdog with rate select | Programmable timeout (0.5–16 ms) and optional disable via COPD bit for debug or safety-critical sequences |
Applications
| Industrial Sensor Node | Home Appliance Control |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 30 seconds via UART to gateway. IC Role / Device Role / Timing Role: Main system controller executing ADC sampling, data formatting, and low-power scheduling. Use Value: AWU + STOP mode reduces average current to <5 µA between samples; 10-bit ADC resolves 0.1°C steps over 0–100°C range. |
Use Scenario: Washing machine main control board managing motor drive, water valve, and user interface. IC Role / Device Role / Timing Role: Central sequencer coordinating timed cycles, fault detection, and LED display updates. Use Value: LVI reset prevents erratic behavior during line dips; COP ensures firmware recovery from lockup during spin cycles. |
| Smart Meter Subsystem | POS Terminal Peripheral |
Use Scenario: Electricity meter auxiliary module monitoring tamper switches and optical pulse output. IC Role / Device Role / Timing Role: Dedicated event logger with non-volatile parameter storage and secure reset handling. Use Value: Flash endurance >100k erase cycles enables decade-long field logging; RST pin debounced via internal filter. |
Use Scenario: Point-of-sale terminal add-on for barcode scanner power management and status reporting. IC Role / Device Role / Timing Role: Interface bridge translating GPIO events into serial commands for host MCU. Use Value: KBI module detects keypresses on scanner housing buttons without CPU polling; IRQ pin signals host on state change. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9RS08KA2CSC | RS08 core, 2 KB flash, no internal oscillator trim, 16-pin SOIC package | Lacks AWU and configurable LVI thresholds; lower peripheral integration | Select when cost and footprint are primary constraints and ADC resolution ≥8-bit suffices |
| MC9S08QG4CDTE | S08 core, 4 KB flash, 512 B RAM, 16-channel 12-bit ADC, TSSOP-16 package | Higher ADC resolution and channel count; different pinout and memory map | Choose for enhanced analog acquisition where layout allows TSSOP-16 and firmware supports S08 ISA |
Compared with MC9RS08KA2CSC and MC9S08QG4CDTE, the MCL908QY2CDWE provides balanced analog capability (10-bit/8-ch ADC), proven low-power operation via AWU/STOP, and mature toolchain support-making it optimal for incremental upgrades from legacy HC08 designs where SOIC-28 compatibility is required.
Availability
MCL908QY2CDWE is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance control units, and smart meter subsystems requiring stable component supply and long-term manufacturability.
Supply support for MCL908QY2CDWE 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 8-bit microcontroller architectures for automotive and industrial markets, emphasizing robustness, low-power design, and toolchain maturity.
The MCL908QY2CDWE belongs to the HC08 family, engineered for cost-effective embedded control in resource-constrained environments where reliability under voltage fluctuation and extended temperature operation are critical.
FAQ
What is the maximum operating frequency of the MCL908QY2CDWE?
The MCL908QY2CDWE supports a maximum bus frequency of 8 MHz, derived from its internal RC oscillator or external crystal source. This frequency determines instruction execution speed and peripheral timing-e.g., ADC conversion time scales linearly with bus clock. The device maintains specification compliance across its full 2.7–5.5 V supply range and −40°C to +85°C ambient temperature.
Does the MCL908QY2CDWE include built-in flash protection features?
Yes, the MCL908QY2CDWE implements flash block protection via the FLASH Block Protect Register (FLBPR) at address $FFBE. This register allows selective locking of flash pages against accidental erase or program operations-critical for preserving bootloader code or factory calibration data. Protection is enforced at hardware level and persists through power cycles.
Can the MCL908QY2CDWE operate from a 3.3 V supply?
Yes, the MCL908QY2CDWE operates across 2.7–5.5 V, making it fully compatible with 3.3 V systems. At 3.3 V, it delivers full functionality-including 10-bit ADC performance, COP watchdog timing, and AWU wake-up accuracy-as specified in the Rev. 3 datasheet. No level-shifting is required for interfacing with standard 3.3 V peripherals.
How does the Auto Wakeup Module (AWU) function in STOP mode on the MCL908QY2CDWE?
In STOP mode, the MCL908QY2CDWE disables the main oscillator and CPU but keeps the AWU's 13-bit counter running from the internal RC clock or external event. When the counter reaches zero or an enabled external edge occurs on PTB0/PTB1, the device exits STOP and resumes execution from the address stored in the reset vector. This enables sub-µA sleep current with deterministic wake latency.
Is there official development support available for the MCL908QY2CDWE?
Yes, Freescale provided CodeWarrior Development Studio v5.x with HC08-specific compiler, debugger, and BDM interface support for the MCL908QY2CDWE. Evaluation hardware included DEMO908QY2 and EVB908QY2 boards with on-board BDM, pushbuttons, LEDs, and ADC test points-all documented in AN2449 and the MC68HLC908QY/QT Family Data Sheet, Rev. 3.
MCL908QY2CDWE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Series:
- HC08
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 2MHz
- Connectivity:
- -
- Peripherals:
- LVD, POR, PWM
- Number of I/O:
- 13
- Program Memory Size:
- 1.5KB (1.5K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 3.6V
- Data Converters:
- A/D 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MCL908QY2CDWE FAQ
1.How can I place an order for MCL908QY2CDWE through Aetrix?
Please submit a Request for Quotation (RFQ) for MCL908QY2CDWE 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 MCL908QY2CDWE reliable?
The price and inventory of MCL908QY2CDWE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCL908QY2CDWE is usually 5 days.
3.What payment methods are accepted for MCL908QY2CDWE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCL908QY2CDWE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCL908QY2CDWE?
MCL908QY2CDWE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCL908QY2CDWE 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 MCL908QY2CDWE?
For technical support, including MCL908QY2CDWE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCL908QY2CDWE requirements.
6.How does Aetrix verify that MCL908QY2CDWE is sourced from the original manufacturer or authorized distributors?
All MCL908QY2CDWE 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 MCL908QY2CDWE meets industry standards.
7.What is the process for return or replacement of MCL908QY2CDWE?
All MCL908QY2CDWE units undergo pre-shipment inspection (PSI). If there is an issue with MCL908QY2CDWE, 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 MCL908QY2CDWE part is unused and in its original packaging.
Return procedure for MCL908QY2CDWE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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