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NXP Semiconductors MCHC908QY2CDWER
- Part No.:
- MCHC908QY2CDWER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MCHC908QY2CDWER.pdf
- Description:
- IC MCU 8BIT 1.5KB FLASH 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,332
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Product details
Overview
MCHC908QY2CDWER from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08-core microcontroller with 2 KB Flash, 128 B RAM, internal 32 MHz RC oscillator, 8-channel 10-bit ADC, and on-chip COP watchdog. It operates from 2.7–5.5 V and supports STOP/WAIT low-power modes for battery-powered sensor nodes and industrial control interfaces.
For engineers reviewing the MCHC908QY2CDWER datasheet, MCHC908QY2CDWER pinout, MCHC908QY2CDWER application, or MCHC908QY2CDWER equivalent, key selection criteria include its 16-pin SOIC-W package, integrated LVI reset protection, keyboard interrupt module for matrix scanning, and compatibility with HC08 development tools including DEMO908QY2 evaluation hardware.
Technical Context
The MCHC908QY2CDWER implements the HCS08 CPU core with 16-bit address space, supporting indexed, extended, and relative addressing. Its System Integration Module (SIM) manages clock distribution, reset sources (power-on, COP, LVI, external IRQ), and interrupt vectoring across 16 priority levels.
It integrates a 10-bit successive-approximation ADC with programmable sample time, conversion trigger via software or timer, and dedicated result register. The Auto Wakeup Module (AWU) provides configurable periodic wake-from-STOP intervals using internal RC clock, enabling ultra-low-power duty-cycled operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | HCS08 8-bit CPU with 16-bit address bus and 32 MHz max internal bus clock |
| Memory | 2 KB on-chip Flash (erase/program in-system), 128 B RAM, no EEPROM |
| ADC | 10-bit resolution, 8 input channels, 25 µs typical conversion time, software or TIM-triggered |
| Power Supply | 2.7–5.5 V operation; LVI reset threshold at 2.55 V (±0.1 V) with hysteresis |
| Low-Power Modes | WAIT (CPU halted, peripherals active), STOP (all clocks gated, AWU wakeup only) |
| Package | 16-pin SOIC-W (5.3 mm width), RoHS-compliant, moisture sensitivity level 3 |
| Oscillator | Internal trimmed RC oscillator (32 MHz ±2% over temp/voltage), no external crystal required |
Pinout & Package
16-pin SOIC-W (Small Outline Integrated Circuit – Wide) package, 1.27 mm pitch, body width 5.3 mm, compliant with JEDEC MS-013AC. Thermal pad not present; standard surface-mount reflow profile applies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply voltage input | Main power rail (2.7–5.5 V); decoupling capacitor required at pin |
| VSS | Ground reference | Digital ground return; must be connected to system GND plane |
| PTA0–PTA7 | Port A bidirectional I/O | 8-bit general-purpose port; PTA0–PTA3 support KBI interrupt, PTA4 = OSC2/BUSCLKX4 |
| PTB0–PTB3 | Port B bidirectional I/O | 4-bit general-purpose port; PTB0–PTB1 support IRQ, PTB2 = RESET, PTB3 = IRQ |
| RESET | Active-low reset input | Asynchronous reset assertion; internal pull-up enabled; accepts 100 ns minimum pulse width |
| IRQ | External interrupt request | Level-sensitive (MODE=0) or edge-sensitive (MODE=1); configured via SIM register |
| KBI0–KBI3 | Keyboard interrupt inputs | Shared with PTA0–PTA3; enable scan matrix wake-from-STOP with debounce filtering |
Key Features
| Feature | Design Value |
|---|---|
| On-chip COP watchdog | Configurable timeout (0.5 ms to 1.0 s) with independent clock source prevents firmware lockup |
| Integrated LVI circuit | Monitors VDD and asserts hardware reset before logic corruption occurs below 2.55 V |
| Auto Wakeup Module (AWU) | Generates periodic interrupts from STOP mode using internal RC clock-no external timing component needed |
| Flash block protection | FLBPR register enables write/erase protection of top 256-byte Flash block containing reset vector |
| Keyboard interrupt (KBI) | Hardware-accelerated matrix scanning with 4-input debounced detection and wake capability |
Applications
| Industrial Sensor Node | Smart Appliance Control |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 5 minutes via UART or RF link. IC Role / Device Role / Timing Role: Main controller executing sensor read, ADC conversion, data formatting, and low-power sleep management. Use Value: AWU-driven periodic wake eliminates need for external RTC; internal oscillator avoids crystal cost and board space. | Use Scenario: Front-panel interface for washing machine with LED indicators, push-button inputs, and motor control signals. IC Role / Device Role / Timing Role: Dedicated UI controller handling button matrix scan, LED drive, buzzer timing, and serial command relay to main MCU. Use Value: KBI module reduces firmware overhead for 4×4 keypad; integrated LVI ensures reliable reset during brownout events. |
| Energy Meter Interface | Legacy Equipment Retrofit |
Use Scenario: Pulse-counting interface between mechanical energy meter and smart grid concentrator. IC Role / Device Role / Timing Role: Isolated pulse capture unit converting mechanical meter ticks into timestamped digital events. Use Value: IRQ pin with edge-triggered mode captures fast pulses (≥10 kHz); STOP-mode current < 1 µA extends battery life for 10+ years. | Use Scenario: Drop-in replacement for obsolete MC68HC908QT2 in legacy HVAC control boards. IC Role / Device Role / Timing Role: Pin-compatible upgrade providing enhanced ADC accuracy and improved oscillator stability. Use Value: Same 16-pin SOIC-W footprint and register map; 10-bit ADC replaces 8-bit version without firmware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9RS08KA2CSC | RS08 core, 2 KB Flash, 128 B RAM, no KBI, 8-bit ADC only | Lacks keyboard interrupt and 10-bit ADC; lower interrupt latency but reduced peripheral set | Select when cost sensitivity outweighs KBI/ADC requirements and existing RS08 toolchain is in use |
| MC9S08QG4CDTE | HCS08 core, 4 KB Flash, 256 B RAM, same pinout, adds SPI/I²C | Higher memory and added communication peripherals increase BOM cost and layout complexity | Select when future firmware expansion or sensor communication (I²C/SPI) is required beyond current design scope |
Compared with MC9RS08KA2CSC, MCHC908QY2CDWER delivers superior analog acquisition and human-interface responsiveness; versus MC9S08QG4CDTE, it offers identical core performance at lower cost and power where extra Flash or serial interfaces are unnecessary.
Availability
MCHC908QY2CDWER is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance UIs, and legacy equipment retrofits requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for MCHC908QY2CDWER 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 company formed from the spin-off of Philips' semiconductor division, now headquartered in Eindhoven, Netherlands, with R&D centers worldwide.
The MCHC908QY2CDWER belongs to the legacy HCS08 microcontroller family, designed for cost-sensitive, low-power embedded control in industrial, consumer, and automotive subsystem applications where code density and peripheral integration are critical.
FAQ
What is the maximum operating frequency of the MCHC908QY2CDWER?
The MCHC908QY2CDWER features an internal trimmed RC oscillator rated up to 32 MHz, delivering a maximum bus clock of 16 MHz (BUSCLKX2 mode) or 32 MHz (BUSCLKX4 mode). This allows instruction execution at up to 8 MIPS (in BUSCLKX2 configuration), sufficient for real-time sensor processing and UI response in compact embedded systems. The oscillator's ±2% tolerance over temperature and voltage eliminates need for external crystal in most applications.
Does the MCHC908QY2CDWER support in-circuit programming?
Yes, the MCHC908QY2CDWER supports in-circuit programming via single-wire background debug mode (BDM) using the BKGD pin. Flash memory can be erased and reprogrammed without removing the device from the PCB, enabling field firmware updates and production programming. The on-chip COP watchdog remains functional during programming, and FLBPR register allows selective protection of critical boot code sections.
How does the Auto Wakeup Module (AWU) function in STOP mode on the MCHC908QY2CDWER?
In STOP mode, the MCHC908QY2CDWER disables all clocks except the AWU's internal RC oscillator, drawing less than 1 µA. The AWU generates a wake event after a programmable interval (from 16 ms to 4.1 s) by asserting IRQ, returning the MCU to normal operation. This enables deterministic, ultra-low-power duty cycling-ideal for battery-operated sensors where measurement intervals exceed seconds.
Can the MCHC908QY2CDWER operate reliably at 2.7 V supply voltage?
Yes, the MCHC908QY2CDWER is fully specified for operation down to 2.7 V across its entire temperature range (–40°C to +85°C). Its Low-Voltage Inhibit (LVI) circuit asserts reset when VDD falls below 2.55 V (±0.1 V), ensuring safe shutdown before logic errors occur. At 2.7 V, the internal oscillator maintains 32 MHz ±3%, and all peripherals-including ADC and KBI-retain full functionality per datasheet specifications.
What development tools are compatible with the MCHC908QY2CDWER?
The MCHC908QY2CDWER is supported by Freescale/NXP's CodeWarrior Development Studio for HCS08, including full BDM debugging, Flash programming, and peripheral initialization wizards. Hardware tools include the DEMO908QY2 evaluation board, USB-based BDM multilink interfaces, and standalone flash programmers like the Cyclone Pro. Legacy assembly and C compilers remain actively maintained for this part.
MCHC908QY2CDWER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 16-SOIC (0.295", 7.50mm 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:
- 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:
- A/D 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MCHC908QY2CDWER FAQ
1.How can I place an order for MCHC908QY2CDWER through Aetrix?
Please submit a Request for Quotation (RFQ) for MCHC908QY2CDWER 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 MCHC908QY2CDWER reliable?
The price and inventory of MCHC908QY2CDWER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCHC908QY2CDWER is usually 5 days.
3.What payment methods are accepted for MCHC908QY2CDWER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCHC908QY2CDWER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCHC908QY2CDWER?
MCHC908QY2CDWER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCHC908QY2CDWER 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 MCHC908QY2CDWER?
For technical support, including MCHC908QY2CDWER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCHC908QY2CDWER requirements.
6.How does Aetrix verify that MCHC908QY2CDWER is sourced from the original manufacturer or authorized distributors?
All MCHC908QY2CDWER 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 MCHC908QY2CDWER meets industry standards.
7.What is the process for return or replacement of MCHC908QY2CDWER?
All MCHC908QY2CDWER units undergo pre-shipment inspection (PSI). If there is an issue with MCHC908QY2CDWER, 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 MCHC908QY2CDWER part is unused and in its original packaging.
Return procedure for MCHC908QY2CDWER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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