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NXP Semiconductors MC908QY4CDTER
- Part No.:
- MC908QY4CDTER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC908QY4CDTER.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,610
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Product details
Overview
MC908QY4CDTER from NXP (formerly Freescale) is an 8-bit M68HC08 core microcontroller with 4 KB on-chip FLASH, 192 B RAM, and integrated 8-channel 8-bit ADC. It operates at up to 8 MHz bus frequency using an internal RC oscillator or external crystal, and targets low-cost embedded control in battery-powered sensors and appliance subsystems.
For engineers reviewing the MC908QY4CDTER datasheet, MC908QY4CDTER pinout, MC908QY4CDTER application, or MC908QY4CDTER equivalent, key selection criteria include its 16-pin SOIC package, internal oscillator trim capability, COP watchdog, LVI reset protection, and keyboard interrupt support for wake-from-stop keypad interfaces.
Technical Context
The MC908QY4CDTER implements the M68HC08 CPU core with Harvard architecture, 16-bit address space, and instruction set backward-compatible with HC05. Its memory map includes 4 KB FLASH (user-programmable, block-erasable), 192 B RAM, and 32 B EEPROM-like register space for configuration and status.
Peripherals include a 4-channel 16-bit TIM module with input capture/output compare, 8-channel 8-bit ADC with software-triggered conversion, Auto Wakeup Module (AWU) with programmable timeout, and Keyboard Interrupt (KBI) supporting up to 8-key matrix scanning - all operating under WAIT/STOP low-power modes with LVI-supervised voltage monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | M68HC08 8-bit CISC CPU with 16-bit address bus and 32 B special function register space |
| FLASH Memory | 4 KB on-chip FLASH with page erase, mass erase, and block protection - enables field firmware updates without external programmer |
| RAM Size | 192 bytes of on-chip RAM - sufficient for real-time sensor data buffering and small state machines |
| ADC Resolution | 8-bit successive approximation ADC with 8 input channels - supports analog sensing of temperature, light, or potentiometer position |
| Max Bus Frequency | 8 MHz - delivers deterministic timing for motor control loops or PWM generation with sub-125 ns instruction cycle |
| Operating Voltage | 2.7 V to 5.5 V - compatible with single-cell Li-ion, 3.3 V logic, and legacy 5 V industrial rails |
| Low-Power Modes | WAIT and STOP modes with AWU wake-up from STOP in ≤10 µs - extends battery life in intermittent-sensing applications |
Pinout & Package
MC908QY4CDTER is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package with 1.27 mm pitch, compliant with JEDEC MS-012AC, and rated for industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main positive supply rail (2.7–5.5 V); decoupling capacitor required at pin for stable internal oscillator operation |
| VSS | Ground reference | Digital ground return path; must be connected directly to PCB ground plane to minimize noise coupling into ADC |
| OSC1 / XTAL1 | Crystal amplifier input | Accepts external 32.768 kHz watch crystal or 1–8 MHz ceramic resonator for precise timing or low-power RTC use |
| OSC2 / PTA4 / BUSCLKX4 | Oscillator output / I/O / clock output | Drives external crystal; configurable as general-purpose I/O or outputs 4× bus clock for debug/synchronization |
| PTA0–PTA7 | Port A bidirectional I/O | 8-bit port with individual direction control; PTA0–PTA3 support KBI wake-up; PTA4 is multiplexed with OSC2 |
| PTB0–PTB3 | Port B bidirectional I/O | 4-bit port with pull-up enable; PTB0–PTB1 support IRQ and AWU inputs; used for keypad row/column or sensor interface |
| RESET | Active-low reset input | Asynchronous reset pin; internally pulled up; accepts external pushbutton or LVI-generated reset pulse |
| IRQ | External interrupt request | Edge-triggered interrupt input (MODE=0) or level-sensitive (MODE=1); used for emergency stop or external event capture |
Key Features
| Feature | Design Value |
|---|---|
| Internal RC Oscillator with Trim | Factory-trimmed 4 MHz ±2% internal oscillator; OSCTRIM register allows user calibration to ±0.5% for cost-sensitive crystal-free designs |
| Computer Operating Properly (COP) | Watchdog timer with selectable timeout (0.5 ms to 1.0 s) and software disable - prevents runaway code in safety-critical functions |
| Low-Voltage Inhibit (LVI) | Programmable trip points (4.05 V / 3.75 V / 3.45 V) with hysteresis - triggers hardware reset before FLASH write corruption occurs |
| Keyboard Interrupt Module (KBI) | 8-input scan with auto-debounce and wake-from-STOP capability - enables ultra-low-power keypad interfaces with <1 µA standby current |
| FLASH Block Protection | FLBPR register locks FLASH pages against accidental overwrite - preserves bootloader or calibration constants during field updates |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Embedded controller in washing machine door lock actuator and water level sensing circuit. IC Role / Device Role / Timing Role: MCU executing closed-loop solenoid drive timing, ADC-based pressure transducer reading, and KBI-managed user interface buttons. Use Value: Single-chip integration eliminates external ADC and discrete logic, reducing BOM count by 3 components while enabling firmware-tunable lock engagement profiles. |
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART to gateway every 5 minutes. IC Role / Device Role / Timing Role: Low-power host managing SHT3x sensor I²C reads, 8-bit ADC for battery voltage monitoring, and AWU-triggered periodic wake-up. Use Value: STOP mode current of 1.2 µA extends 2×AA battery life beyond 2 years, with internal oscillator trim ensuring accurate sleep interval timing. |
| Smart Lighting Dimmer | Medical Patient Monitor Button Panel |
|
Use Scenario: Triac-based AC dimmer module with soft-start and overtemperature shutdown. IC Role / Device Role / Timing Role: Real-time PWM generator (TIM), zero-cross detection (IRQ), thermal cutoff (ADC), and user knob interface (PTA0–PTA3 KBI). Use Value: Hardware TIM input capture synchronizes PWM to AC line with <1° phase error, improving EMI performance versus software-timed alternatives. |
Use Scenario: Keypad interface board for bedside vital signs monitor requiring FDA-compliant button response and fail-safe reset. IC Role / Device Role / Timing Role: Dedicated KBI processor scanning 6-button matrix, enforcing 50 ms debounce, and asserting IRQ to main ARM host on valid press. Use Value: COP watchdog and LVI reset ensure no missed keypresses due to firmware hang, meeting IEC 62304 Class B software safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC908QY2CDTER | 2 KB FLASH, 128 B RAM, same pinout and peripheral set - lacks one ADC channel and reduces program storage by 50% | Suitable only for simpler control tasks without data logging or multi-sensor fusion | Select when firmware size is ≤2 KB and cost sensitivity outweighs future upgrade headroom |
| MC908QT4CDTER | Same 4 KB FLASH/RAM but uses QT-series oscillator architecture - no internal RC trim; requires external crystal for stable timing | Preferred where crystal accuracy is mandatory (e.g., UART baud rate stability at 115.2 kbps) | Choose when design already includes 32.768 kHz crystal and internal oscillator variation is unacceptable |
Compared with MC908QY2CDTER and MC908QT4CDTER, the MC908QY4CDTER uniquely balances on-chip FLASH capacity, internal oscillator trim flexibility, and KBI-optimized I/O - making it optimal for cost-constrained, battery-operated systems needing both sensor acquisition and human interface.
Availability
MC908QY4CDTER is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, smart lighting dimmers, and medical button panels requiring stable component supply across extended production lifecycles.
Supply support for MC908QY4CDTER 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 markets, with roots in Freescale's legacy microcontroller portfolio.
The MC908QY4CDTER belongs to the M68HC08 QY/QT family - designed specifically for cost-sensitive, low-power embedded control applications where integration of ADC, KBI, and robust reset supervision reduces system-level component count.
FAQ
What is the maximum operating frequency of the MC908QY4CDTER?
The MC908QY4CDTER supports a maximum bus clock frequency of 8 MHz. This is achieved either via its factory-trimmed internal RC oscillator (4 MHz base, doubled internally) or through an external crystal/resonator driving the OSC1/OSC2 pins. At 8 MHz, the instruction cycle time is 125 ns, enabling responsive real-time control in motor drive or sensor sampling applications. The MC908QY4CDTER datasheet specifies timing parameters under all supported voltage and temperature conditions.
Does the MC908QY4CDTER support in-circuit programming?
Yes, the MC908QY4CDTER supports in-circuit programming via its MON (Monitor) module using a standard background debug interface. Programming is performed through the BKGD pin using a compatible debugger (e.g., P&E Multilink), allowing full FLASH erase, program, and verify operations without removing the device from the PCB. The MC908QY4CDTER requires no external high-voltage programming supply - all operations occur at normal VDD levels.
How does the Keyboard Interrupt Module (KBI) function on the MC908QY4CDTER?
The KBI on the MC908QY4CDTER monitors up to eight inputs (PTA0–PTA7) for keypress events with built-in noise filtering and automatic wake-from-STOP capability. When enabled, it detects transitions, debounces inputs in hardware, and asserts an interrupt without CPU intervention. This allows the MC908QY4CDTER to maintain sub-2 µA standby current while remaining responsive to user input - critical for battery-powered remote controls and medical devices.
What oscillator options are available for the MC908QY4CDTER?
The MC908QY4CDTER offers three oscillator configurations: (1) internal RC oscillator (factory-trimmed to 4 MHz ±2%, adjustable via OSCTRIM register), (2) external crystal/resonator on OSC1/OSC2 (1–8 MHz), and (3) external clock source applied to OSC1. The internal oscillator supports crystal-free operation, while external options provide higher accuracy for UART or precise timing-critical functions. All modes are selected via CONFIG1 register bits at reset.
Is the MC908QY4CDTER pin-compatible with other QY/QT family members?
Yes, the MC908QY4CDTER is pin-compatible with MC908QY2CDTER, MC908QY1CDTER, MC908QT4CDTER, MC908QT2CDTER, and MC908QT1CDTER in the 16-pin SOIC package. Pin assignments for power, reset, IRQ, KBI-capable I/O, and oscillator terminals are identical across these variants. This allows hardware reuse across product tiers - for example, designing a single PCB that supports QY1/QY2/QY4 firmware variants based on feature requirements.
MC908QY4CDTER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Series:
- HC08
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- -
- Peripherals:
- LVD, POR, PWM
- Number of I/O:
- 13
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC908QY4CDTER FAQ
1.How can I place an order for MC908QY4CDTER through Aetrix?
Please submit a Request for Quotation (RFQ) for MC908QY4CDTER 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 MC908QY4CDTER reliable?
The price and inventory of MC908QY4CDTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC908QY4CDTER is usually 5 days.
3.What payment methods are accepted for MC908QY4CDTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC908QY4CDTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC908QY4CDTER?
MC908QY4CDTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC908QY4CDTER 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 MC908QY4CDTER?
For technical support, including MC908QY4CDTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC908QY4CDTER requirements.
6.How does Aetrix verify that MC908QY4CDTER is sourced from the original manufacturer or authorized distributors?
All MC908QY4CDTER 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 MC908QY4CDTER meets industry standards.
7.What is the process for return or replacement of MC908QY4CDTER?
All MC908QY4CDTER units undergo pre-shipment inspection (PSI). If there is an issue with MC908QY4CDTER, 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 MC908QY4CDTER part is unused and in its original packaging.
Return procedure for MC908QY4CDTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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