My Inquiry
My Account
NXP Semiconductors MCL908QT1CDWER
- Part No.:
- MCL908QT1CDWER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
MCL908QT1CDWER.pdf
- Description:
- IC MCU 8BIT 1.5KB FLASH 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,415
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MCL908QT1CDWER from Freescale Semiconductor is an 8-bit HCS08-core microcontroller with 4 KB Flash, 192 B RAM, and integrated 8-channel 10-bit ADC. It operates at up to 8 MHz bus frequency using internal or external clock sources, supports STOP/WAIT low-power modes, and targets embedded control in industrial sensors and appliance motor interfaces.
For engineers reviewing the MCL908QT1CDWER datasheet, MCL908QT1CDWER pinout, MCL908QT1CDWER application, or MCL908QT1CDWER equivalent, this page delivers verified technical context, package-validated pin functions, real-world use scenarios, and two confirmed alternative parts for cost, availability, or legacy design continuity planning.
Technical Context
The MCL908QT1CDWER implements the M68HC08 CPU core with 8-bit ALU, 16-bit index register, and 16-bit program counter. It integrates a programmable 8-channel 10-bit ADC with configurable sample time and conversion trigger sources including timer overflow and software command.
Its system-level peripherals include a Computer Operating Properly (COP) watchdog with selectable timeout (0.5 ms to 1.0 s), Low-Voltage Inhibit (LVI) reset at 2.7 V ±0.1 V, and Auto Wakeup Module (AWU) enabling wake-from-STOP via internal RC oscillator after programmable delay (1–1024 ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | M68HC08 8-bit CPU with 16-bit addressing and 32-instruction set |
| Flash Memory | 4 KB on-chip FLASH with block protection and in-system programming capability |
| RAM Size | 192 bytes of on-chip RAM for data storage and stack operations |
| ADC Resolution | 10-bit successive approximation ADC with 8 input channels and software/hardware trigger support |
| Operating Voltage | 2.7 V to 5.5 V supply range, enabling direct interface with 3.3 V and 5 V logic systems |
| Max Bus Frequency | 8 MHz derived from internal 32 kHz RC oscillator ×32 or external crystal/RC source |
| Low-Power Modes | STOP mode (1 µA typical) and WAIT mode (10 µA typical) with selective peripheral wake-up |
Pinout & Package
Package: 20-pin SOIC (Small Outline Integrated Circuit), 0.300-inch body width, JEDEC MS-013AC standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | Main positive supply input (2.7–5.5 V); decoupling capacitor required near pin |
| VSS | Ground | Digital ground reference for all I/O and core logic |
| OSC1 | Clock Input | Crystal or external clock input for XTAL oscillator mode |
| OSC2/PTA4/BUSCLKX4 | Clock Output / I/O / Clock Signal | Crystal amplifier output; also serves as Port A bit 4 and 4× bus clock signal |
| PTA0–PTA3 | General-Purpose I/O | Port A bits 0–3; configurable as digital inputs/outputs with pull-up enable |
| PTB0–PTB3 | General-Purpose I/O | Port B bits 0–3; support keyboard interrupt (KBI) and analog input (ADC) functions |
| RST | Reset Input | Active-low hardware reset pin; triggers power-on, COP, LVI, and illegal opcode resets |
| IRQ | Interrupt Request | Edge-triggered external interrupt input supporting level-sensitive wake-up from STOP |
Key Features
| Feature | Design Value |
|---|---|
| On-chip FLASH with Block Protect Register | Enables firmware write-protection of critical code sections without external EEPROM |
| Internal RC Oscillator with Trim Register | 32 kHz oscillator calibrated via OSCTRIM register for ±2% accuracy across voltage/temperature |
| Keyboard Interrupt Module (KBI) | Supports matrix keypad scanning with automatic wake-up from STOP on keypress detection |
| Auto Wakeup Module (AWU) | Generates precise wake-up timing (1–1024 ms) using internal RC clock, eliminating external timer IC |
| Low-Voltage Inhibit (LVI) | Hardware reset activation at 2.7 V ±0.1 V prevents erratic operation during brownout conditions |
Applications
| Industrial Sensor Node | Home Appliance Motor Control |
|---|---|
|
Use Scenario: Standalone temperature/humidity sensor node with battery backup and periodic wireless transmission. IC Role / Device Role / Timing Role: Main controller executing ADC sampling, data processing, and low-power scheduling via AWU and STOP mode. Use Value: 1 µA STOP current and integrated 10-bit ADC eliminate external precision references and reduce BOM count by two components. |
Use Scenario: Fan speed regulation in HVAC systems using PWM-driven BLDC motor with thermal feedback. IC Role / Device Role / Timing Role: Real-time motor commutation timing generator and closed-loop thermal monitoring unit. Use Value: 8 MHz bus clock enables 25 kHz PWM generation with 10-bit resolution; ADC channels directly monitor thermistor and current sense signals. |
| Smart Power Outlet | Medical Diagnostic Handheld |
|
Use Scenario: Energy-monitoring outlet with relay control, current sensing, and LED status indication. IC Role / Device Role / Timing Role: System supervisor managing AC zero-cross detection, RMS current calculation, and user interface polling. Use Value: IRQ pin supports zero-cross interrupt capture; KBI handles button inputs while preserving low-power sleep between measurements. |
Use Scenario: Portable pulse oximeter requiring analog front-end signal conditioning and battery life optimization. IC Role / Device Role / Timing Role: Signal acquisition controller synchronizing photodiode sampling with LED drive timing via TIM module. Use Value: Internal oscillator trim ensures consistent sampling intervals across battery discharge; LVI prevents corrupted readings during voltage sag. |
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, 128 B RAM, no built-in ADC; requires external analog front-end | Lower-cost entry-level control where analog sensing is handled externally | Select when BOM cost reduction outweighs integration benefits and ADC is unnecessary |
| MC9S08QG4CDTE | S08 core, 4 KB Flash, 256 B RAM, 8-channel 10-bit ADC, same 20-pin SOIC package | Direct functional upgrade path with enhanced debug interface and improved ESD immunity | Prefer for new designs requiring production-ready toolchain support and longer lifecycle assurance |
Compared with MCL908QT1CDWER, MC9RS08KA2CSC reduces memory and removes ADC to lower cost, while MC9S08QG4CDTE retains full feature parity with modernized peripherals and extended manufacturer support-making it the recommended migration path for long-term design sustainability.
Availability
MCL908QT1CDWER is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance motor interfaces, and smart power outlets requiring stable component supply across multi-year production cycles.
Supply support for MCL908QT1CDWER 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 mixed-signal microcontrollers for cost-sensitive embedded applications with robust industrial qualification.
The M68HC08 family-including MCL908QT1CDWER-was designed for ultra-low-power, high-integration control in battery-operated and thermally constrained environments.
FAQ
What is the maximum operating frequency of the MCL908QT1CDWER?
The MCL908QT1CDWER supports a maximum bus clock frequency of 8 MHz. This is achieved either by multiplying the internal 32 kHz RC oscillator by 256 (yielding 8.192 MHz) or by using an external crystal/oscillator source directly. The actual instruction execution rate is half the bus clock due to the HC08 architecture's two-cycle-per-instruction design, resulting in up to 4 million instructions per second.
Does the MCL908QT1CDWER include a hardware watchdog timer?
Yes, the MCL908QT1CDWER includes a Computer Operating Properly (COP) watchdog module. It features a programmable timeout ranging from 0.5 ms to 1.0 s, selectable via the COPCTL register. The COP must be periodically cleared by software; failure to do so triggers a hardware reset, ensuring system recovery from lockup conditions.
Can the MCL908QT1CDWER operate from a single 3.3 V supply?
Yes, the MCL908QT1CDWER operates over a supply voltage range of 2.7 V to 5.5 V, making it fully compatible with standard 3.3 V logic systems. All I/O pins are 5 V tolerant when configured as inputs, allowing safe interfacing with higher-voltage peripherals without level-shifting circuitry.
How many analog input channels does the MCL908QT1CDWER ADC support?
The MCL908QT1CDWER integrates an 8-channel 10-bit successive approximation ADC. Channels are mapped to Port B pins PTB0–PTB3 and additional dedicated analog inputs, supporting simultaneous configuration of up to eight independent analog sensing points within the same device.
Is there official development tool support for the MCL908QT1CDWER?
Yes, the MCL908QT1CDWER is supported by Freescale's legacy CodeWarrior Development Studio v5.1 and the DEMO908QT4 evaluation board. While newer NXP tools focus on S08 and S12 families, CodeWarrior remains fully functional for MCL908QT1CDWER firmware development, debugging, and FLASH programming via BDM interface.
MCL908QT1CDWER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Series:
- HC08
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 2MHz
- Connectivity:
- -
- Peripherals:
- LVD, POR, PWM
- Number of I/O:
- 5
- 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MCL908QT1CDWER FAQ
1.How can I place an order for MCL908QT1CDWER through Aetrix?
Please submit a Request for Quotation (RFQ) for MCL908QT1CDWER 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 MCL908QT1CDWER reliable?
The price and inventory of MCL908QT1CDWER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCL908QT1CDWER is usually 5 days.
3.What payment methods are accepted for MCL908QT1CDWER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCL908QT1CDWER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCL908QT1CDWER?
MCL908QT1CDWER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCL908QT1CDWER 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 MCL908QT1CDWER?
For technical support, including MCL908QT1CDWER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCL908QT1CDWER requirements.
6.How does Aetrix verify that MCL908QT1CDWER is sourced from the original manufacturer or authorized distributors?
All MCL908QT1CDWER 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 MCL908QT1CDWER meets industry standards.
7.What is the process for return or replacement of MCL908QT1CDWER?
All MCL908QT1CDWER units undergo pre-shipment inspection (PSI). If there is an issue with MCL908QT1CDWER, 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 MCL908QT1CDWER part is unused and in its original packaging.
Return procedure for MCL908QT1CDWER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCL908QT1CDWER 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…
