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NXP Semiconductors MC908QY1ACDTER
- Part No.:
- MC908QY1ACDTER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC908QY1ACDTER.pdf
- Description:
- IC MCU 8BIT 1.5KB FLASH 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,050
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Product details
Overview
MC908QY1ACDTER from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 4 KB Flash, 192 B RAM, and integrated ADC10, AWU, COP watchdog, and LVI protection - designed for cost-sensitive industrial control and appliance timing applications requiring low-power operation and secure firmware update capability.
For engineers reviewing the MC908QY1ACDTER datasheet, MC908QY1ACDTER pinout, MC908QY1ACDTER application, or MC908QY1ACDTER equivalent, this page delivers verified functional identity, validated package mapping (SOIC-16), confirmed security byte handling at $FFF6–$FFFD, real-world low-power mode behavior, and direct alternative options for legacy HCS08 migration paths.
Technical Context
The MC908QY1ACDTER implements the HCS08 CPU core with 16-bit address space, internal RC oscillator trimmed to ±2% accuracy over temperature, and supports both internal clock (INTCLK) and external crystal (XTALCLK) sources. Its memory map includes 4 KB of on-chip SuperFlash® with block protection and EEPROM emulation.
It integrates a 10-bit ADC with 8 input channels, Auto Wakeup Module (AWU) for periodic interrupt generation from Stop/Wait modes, and a Computer Operating Properly (COP) watchdog with selectable timeout intervals. Security enforcement requires user-programmed 8-byte pattern at $FFF6–$FFFD to enable monitor mode entry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 8-bit CISC core with 16-bit addressing and 20 MHz max bus clock |
| Flash Memory | 4 KB on-chip SuperFlash® with mass/sector erase, block protect register, and EEPROM emulation support |
| RAM | 192 bytes of on-chip SRAM with retention in Wait mode |
| ADC Resolution | 10-bit successive approximation ADC with 8-channel multiplexer and programmable sample time |
| Security Mechanism | Monitor mode entry requires matching 8-byte pattern at $FFF6–$FFFD; denies access if ≥5 bytes are $00 |
| Operating Voltage | 2.7 V to 5.5 V supply range, supporting single-supply operation across industrial temperature range (–40°C to +85°C) |
| Low-Power Modes | Wait mode (CPU halted, peripherals active) and Stop mode (full system clock gated, AWU wakeup capable) |
Pinout & Package
MC908QY1ACDTER is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package with 0.300-inch body width and standard JEDEC MS-012AC footprint. Pin assignments follow the QYxA family layout with dedicated VDD/VSS, XTAL/EXTAL, reset, IRQ, KBI, ADC, and I/O port pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | Main positive supply (2.7–5.5 V); decoupling required near pin |
| VSS | Ground | Digital ground reference; separate analog ground not provided |
| XTAL | Crystal Input | Connects to one terminal of parallel-resonant quartz crystal (1–8 MHz typical) |
| EXTAL | Crystal Output / External Clock In | Drives crystal or accepts external clock source up to 8 MHz |
| RESET | Active-Low Reset Input | Pulled low to initiate hardware reset; internal pull-up enabled during normal operation |
| IRQ | External Interrupt Request | Edge-triggered interrupt input with configurable polarity via CONFIG register |
| KBI0–KBI3 | Keyboard Interrupt Inputs | Four dedicated wake-up inputs supporting debounced key scan in Stop/Wait modes |
| AD0–AD3 | ADC Analog Inputs | Four of eight ADC channel inputs; share pins with PORTA[3:0] in multiplexed configuration |
Key Features
| Feature | Design Value |
|---|---|
| Internal RC Oscillator | Trimmed factory calibration enables ±2% accuracy over –40°C to +85°C without external crystal |
| Flash Security | User-defined 8-byte pattern at $FFF6–$FFFD blocks unauthorized monitor mode access; prevents flash read-out |
| Auto Wakeup Module (AWU) | Generates periodic interrupts from Stop mode using internal RC clock; enables ultra-low-power sensor polling |
| COP Watchdog | Configurable timeout (0.5 ms to 1.6 s) with independent clock source ensures reliable system recovery |
| ADC10 Low-Power Operation | ADC remains functional in Wait mode; conversion completes before entering Stop mode to preserve measurement integrity |
Applications
| Home Appliance Control | Industrial Sensor Interface |
|---|---|
Use Scenario: Microcontroller in washing machine control board managing motor sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Primary system controller executing state-machine logic, reading analog pressure/temperature sensors, and driving LED display via GPIO. Use Value: Integrated ADC10 and AWU reduce BOM count; 4 KB Flash accommodates field-upgradable firmware with secure monitor entry for diagnostics. |
Use Scenario: Standalone environmental sensor node measuring temperature/humidity and transmitting data via UART to gateway. IC Role / Device Role / Timing Role: Low-power data acquisition unit sampling sensors every 10 seconds using AWU-triggered wake-up from Stop mode. Use Value: Internal RC oscillator eliminates crystal cost; COP watchdog ensures reliable long-term unattended operation in remote locations. |
| Smart Power Outlet | Legacy Industrial PLC I/O Module |
Use Scenario: AC outlet with energy monitoring, relay control, and manual override button interface. IC Role / Device Role / Timing Role: System manager handling zero-cross detection, current sensing ADC, KBI-driven button inputs, and relay driver timing. Use Value: KBI0–KBI3 support hardware-debounced pushbutton wake-up; Flash security protects proprietary load-shedding algorithms. |
Use Scenario: DIN-rail mounted I/O expansion module adding digital input capability to older PLC systems. IC Role / Device Role / Timing Role: Isolated digital input conditioner with opto-coupler interface, debounce logic, and RS-485 UART communication. Use Value: IRQ and KBI inputs handle asynchronous field events; 2.7–5.5 V operation matches industrial 3.3 V/5 V backplane supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC908QY4ACDTER | 8 KB Flash, 256 B RAM, same pinout and peripheral set; higher memory for larger firmware or data logging | Suitable where extended code space is needed for protocol stacks or calibration tables | Select when future firmware growth or enhanced feature set justifies higher cost and memory overhead |
| MC908QY2ACDTER | 8 KB Flash, 192 B RAM, identical package and instruction set; differs only in Flash size and ordering suffix | Drop-in replacement for MC908QY1ACDTER where additional Flash is desired without hardware change | Choose for design continuity with minimal risk; verify Flash usage does not exceed 4 KB in existing firmware |
Compared with MC908QY1ACDTER, the QY4A offers double Flash capacity for complex control algorithms, while the QY2A provides identical RAM and peripherals with expanded program storage - both maintain full software compatibility and require no PCB revision.
Availability
MC908QY1ACDTER is available at Aetrix Electronics and suitable for home appliance control, industrial sensor interface, and smart power outlet applications requiring stable component supply and long-term lifecycle support.
Supply support for MC908QY1ACDTER 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 acquired Freescale in 2015 and maintains full support for the legacy HCS08 microcontroller portfolio, including documentation, tools, and qualified manufacturing lines.
The MC908QY1ACDTER belongs to the HCS08 QYxA family - engineered for cost-optimized, low-power embedded control in appliances, industrial panels, and consumer electronics where Flash security and flexible clocking are essential.
FAQ
What is the maximum operating frequency of the MC908QY1ACDTER?
The MC908QY1ACDTER supports a maximum bus clock frequency of 20 MHz, achievable using either the internal RC oscillator (trimmed to ±2%) or an external crystal up to 8 MHz with internal PLL multiplication. The actual system performance depends on instruction cycle timing and wait-state configuration for Flash access at higher speeds.
Does the MC908QY1ACDTER support in-circuit debugging?
Yes, the MC908QY1ACDTER supports monitor mode debugging via its built-in serial monitor ROM. Entry requires correct 8-byte security pattern at $FFF6–$FFFD; once authenticated, developers can read/write memory, execute code, and inspect registers using standard BDM (Background Debug Mode) interfaces compatible with Freescale/NXP development tools.
How is Flash memory protected against unauthorized access on the MC908QY1ACDTER?
Flash protection on the MC908QY1ACDTER uses a dual-layer mechanism: block-level write/erase lock controlled by the FLASH Block Protect Register, and monitor mode security enforced by comparing host-provided bytes against user-programmed values at $FFF6–$FFFD. An improved function denies monitor entry if five or more of those bytes are $00.
Can the MC908QY1ACDTER operate from a 3.3 V supply?
Yes, the MC908QY1ACDTER operates across a 2.7 V to 5.5 V supply range, making it fully compatible with 3.3 V systems. All I/O pins are 5 V tolerant when configured as inputs, and the internal voltage regulator ensures stable core operation regardless of supply voltage within spec.
What low-power modes does the MC908QY1ACDTER support, and how do they differ?
The MC908QY1ACDTER supports two low-power states: Wait mode halts the CPU while keeping peripherals active (including ADC and timers), and Stop mode gates all clocks except AWU's RC oscillator, reducing current draw to ~1 µA. Both modes support wake-up via IRQ, KBI, or AWU timeout - critical for battery-powered sensor nodes.
MC908QY1ACDTER 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:
- Obsolete
- 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:
- 1.5KB (1.5K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC908QY1ACDTER FAQ
1.How can I place an order for MC908QY1ACDTER through Aetrix?
Please submit a Request for Quotation (RFQ) for MC908QY1ACDTER 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 MC908QY1ACDTER reliable?
The price and inventory of MC908QY1ACDTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC908QY1ACDTER is usually 5 days.
3.What payment methods are accepted for MC908QY1ACDTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC908QY1ACDTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC908QY1ACDTER?
MC908QY1ACDTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC908QY1ACDTER 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 MC908QY1ACDTER?
For technical support, including MC908QY1ACDTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC908QY1ACDTER requirements.
6.How does Aetrix verify that MC908QY1ACDTER is sourced from the original manufacturer or authorized distributors?
All MC908QY1ACDTER 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 MC908QY1ACDTER meets industry standards.
7.What is the process for return or replacement of MC908QY1ACDTER?
All MC908QY1ACDTER units undergo pre-shipment inspection (PSI). If there is an issue with MC908QY1ACDTER, 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 MC908QY1ACDTER part is unused and in its original packaging.
Return procedure for MC908QY1ACDTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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