My Inquiry
My Account
NXP Semiconductors MCHC908QY4CDWE
- Part No.:
- MCHC908QY4CDWE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MCHC908QY4CDWE.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,855
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MCHC908QY4CDWE from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08-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 trimmed RC oscillator and targets low-cost embedded control in appliance motor drives, industrial sensors, and battery-powered instrumentation.
For engineers reviewing the MCHC908QY4CDWE datasheet, MCHC908QY4CDWE pinout, MCHC908QY4CDWE application, or MCHC908QY4CDWE equivalent, key selection criteria include its 16-pin SOIC-W package, 5 V operation, COP watchdog, LVI reset protection, and keyboard interrupt capability for touch-button interfaces.
Technical Context
The MCHC908QY4CDWE implements the HCS08 CPU core with 16-bit address space, supporting WAIT/STOP low-power modes and a configurable Computer Operating Properly (COP) watchdog timer with selectable timeout intervals. Its oscillator module supports internal RC (±2% typical after trim), external crystal, or RC configurations with automatic failover.
Memory architecture includes 4 KB FLASH with block protection, 192 B RAM, and dedicated I/O register space mapped to $00–$FF. Peripheral integration comprises an 8-channel 8-bit ADC with software-triggered conversion, Auto Wakeup Module (AWU) with programmable sleep intervals, and Keyboard Interrupt Module (KBI) supporting up to 8 keys with debouncing logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | HCS08 8-bit CPU with 16-bit addressing and 20 MHz max internal bus clock |
| FLASH Memory | 4 KB on-chip FLASH with page/mass erase, block protection, and 100k-cycle endurance |
| RAM | 192 bytes of on-chip RAM for data and stack operations |
| ADC | 8-channel 8-bit successive-approximation ADC with 25 µs conversion time and software trigger |
| Oscillator | Internal trimmed RC oscillator (typ. 4.0–8.0 MHz), ±2% accuracy after factory trim at 25°C |
| Supply Voltage | 4.5 V to 5.5 V operation - ensures compatibility with standard 5 V logic and legacy industrial rails |
| Package | 16-pin SOIC-W (Wide), 7.5 mm body width, 1.27 mm pitch - compatible with standard wave-solder and reflow processes |
Pinout & Package
Package: 16-pin SOIC-W (Wide), case number 751BD-03, 7.5 mm body width, 1.27 mm lead pitch, JEDEC MS-013 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main 4.5–5.5 V supply rail for core and I/O |
| VSS | GND | Digital ground reference for all circuitry |
| PTA0–PTA7 | Port A bidirectional I/O | 8-bit port with individual direction control; PTA0–PTA3 support KBI inputs |
| PTB0–PTB3 | Port B bidirectional I/O | 4-bit port; PTB0–PTB1 support IRQ and AWU wake sources |
| OSC1/XTAL | Crystal input | Connects to one terminal of external 32.768 kHz or 1–8 MHz crystal |
| OSC2/PTA4/BUSCLKX4 | Crystal output / I/O / clock out | Drives crystal second terminal; also outputs BUSCLK×4 signal or functions as GPIO |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; triggers power-on and LVI resets |
| IRQ | External interrupt input | Edge-sensitive interrupt source with configurable polarity via MODE bit |
Key Features
| Feature | Design Value |
|---|---|
| Integrated COP watchdog | Configurable timeout (1.0–16.4 ms) with independent clock source prevents firmware lockup |
| Low-voltage inhibit (LVI) | Programmable trip point (4.25 V or 4.00 V) with hysteresis prevents erratic operation during brownout |
| Keyboard interrupt (KBI) | Hardware scan of up to 8 keys with auto-debounce and wake-from-STOP capability |
| Auto wakeup module (AWU) | Programmable interval timer (32 ms–8.2 s) enabling ultra-low-power periodic sensing |
| FLASH block protection | Software-lockable FLASH pages prevent accidental overwrite during field firmware updates |
Applications
| Appliance Motor Control | Industrial Sensor Node |
|---|---|
Use Scenario: Fan speed regulation and fault monitoring in HVAC blower modules. IC Role / Device Role / Timing Role: Main system controller executing closed-loop PWM timing, ADC-based current sensing, and thermal shutdown logic. Use Value: Integrated 8-bit ADC and COP watchdog enable compact, self-monitoring motor control without external supervision ICs. | Use Scenario: Battery-powered temperature/humidity sensor transmitting data via UART to gateway. IC Role / Device Role / Timing Role: Low-power data acquisition controller managing ADC sampling, LVI-protected sleep/wake cycles, and serial communication. Use Value: AWU + STOP mode achieves <1 µA standby current, extending 2xAA battery life beyond 2 years. |
| Touch-Controlled Panel | Legacy Equipment Interface |
Use Scenario: Keypad interface for microwave oven or coffee maker with capacitive or mechanical buttons. IC Role / Device Role / Timing Role: Dedicated KBI handler scanning matrix keys, debouncing inputs, and waking CPU only on valid press. Use Value: Hardware KBI reduces CPU load by >95% vs. software polling, freeing cycles for display or safety checks. | Use Scenario: Retrofit controller replacing obsolete discrete logic in legacy test equipment front panels. IC Role / Device Role / Timing Role: Pin-compatible replacement for MC68HC908QY2/QY1, executing state-machine sequencing and I/O expansion. Use Value: Same 16-pin SOIC-W footprint and identical peripheral register map enables drop-in PCB reuse. |
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, no KBI, 10-bit ADC, 3.3 V only | Lacks keyboard interrupt hardware; requires external debounce or firmware handling | Select when lower cost and 3.3 V operation outweigh KBI requirement |
| MC9S08QG4CDTE | S08 core, same 4 KB FLASH, 16-pin TSSOP, adds SPI/I²C, no AWU | Supports serial communication peripherals but lacks AWU for ultra-low-power wake scheduling | Select when board space allows TSSOP and serial comms are needed over periodic wake |
Compared with MC9RS08KA2CSC and MC9S08QG4CDTE, the MCHC908QY4CDWE uniquely combines KBI hardware, AWU timer, and 5 V tolerance in a legacy-compatible SOIC-W package - making it optimal for cost-sensitive, battery-aware, touch-enabled 5 V systems where peripheral count is minimal.
Availability
MCHC908QY4CDWE is available at Aetrix Electronics and suitable for appliance motor control, industrial sensor nodes, touch-panel interfaces, and legacy equipment retrofits requiring stable component supply across extended production lifecycles.
Supply support for MCHC908QY4CDWE 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.
The MCHC908QY4CDWE belongs to the legacy HCS08 microcontroller family, designed for cost-effective, low-power embedded control in consumer appliances, industrial subsystems, and automotive body electronics where 5 V robustness and minimal peripheral integration are prioritized.
FAQ
What is the maximum operating frequency of the MCHC908QY4CDWE?
The MCHC908QY4CDWE supports a maximum bus clock frequency of 8 MHz when using the internal trimmed RC oscillator. With external crystal or resonator, the core can operate up to 20 MHz bus speed depending on configuration and voltage - however, the MCHC908QY4CDWE datasheet specifies 8 MHz as the guaranteed maximum for its 16-pin SOIC-W package under full 4.5–5.5 V and –40°C to +85°C conditions. The internal oscillator is factory-trimmed to ±2% accuracy at 25°C.
Does the MCHC908QY4CDWE support in-circuit programming?
Yes, the MCHC908QY4CDWE supports in-circuit programming via the Background Debug Mode (BDM) interface using a single-wire connection. This allows full FLASH erase, program, and verify operations without removing the device from the PCB. The BDM pin is multiplexed with Port A bit 7 (PTA7), and entry requires specific reset timing and voltage sequences documented in the Freescale AN2295 application note. No external high-voltage programming supply is needed.
What are the low-power modes supported by the MCHC908QY4CDWE?
The MCHC908QY4CDWE supports two primary low-power modes: WAIT and STOP. In WAIT mode, the CPU halts but peripherals (ADC, KBI, AWU) remain active with clocks enabled; current draw is ~100 µA at 5 V. In STOP mode, all clocks halt except the AWU counter and LVI circuitry; typical current is <1 µA. Both modes retain RAM contents and support wake via IRQ, KBI, AWU timeout, or RESET. The MCHC908QY4CDWE does not support DOZE or other intermediate power states.
Can the MCHC908QY4CDWE drive LEDs directly from its I/O pins?
Yes, the MCHC908QY4CDWE I/O pins can sink up to 20 mA per pin and source up to 5 mA per pin at VDD = 5 V, making them suitable for direct LED driving in common-cathode configurations. Port A and Port B pins are individually configurable as push-pull outputs. However, total package current must remain below 100 mA, and simultaneous high-current sourcing across multiple pins requires careful thermal and voltage-drop analysis. For higher brightness or multiplexed displays, external drivers are recommended.
Is the MCHC908QY4CDWE pin-compatible with other QY-series MCUs?
Yes, the MCHC908QY4CDWE is pin-compatible with MC68HC908QY2CDWE and MC68HC908QY1CDWE in the same 16-pin SOIC-W package. All share identical pin assignments, electrical characteristics, and register maps. Differences lie solely in FLASH size (4 KB vs. 2 KB vs. 1 KB) and RAM (192 B vs. 128 B vs. 64 B). This allows hardware reuse across product tiers - firmware must be sized accordingly, and FLASH protection settings may require adjustment for smaller variants.
MCHC908QY4CDWE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Series:
- HC08
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- Programmable:
- 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:
MCHC908QY4CDWE FAQ
1.How can I place an order for MCHC908QY4CDWE through Aetrix?
Please submit a Request for Quotation (RFQ) for MCHC908QY4CDWE 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 MCHC908QY4CDWE reliable?
The price and inventory of MCHC908QY4CDWE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCHC908QY4CDWE is usually 5 days.
3.What payment methods are accepted for MCHC908QY4CDWE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCHC908QY4CDWE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCHC908QY4CDWE?
MCHC908QY4CDWE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCHC908QY4CDWE 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 MCHC908QY4CDWE?
For technical support, including MCHC908QY4CDWE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCHC908QY4CDWE requirements.
6.How does Aetrix verify that MCHC908QY4CDWE is sourced from the original manufacturer or authorized distributors?
All MCHC908QY4CDWE 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 MCHC908QY4CDWE meets industry standards.
7.What is the process for return or replacement of MCHC908QY4CDWE?
All MCHC908QY4CDWE units undergo pre-shipment inspection (PSI). If there is an issue with MCHC908QY4CDWE, 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 MCHC908QY4CDWE part is unused and in its original packaging.
Return procedure for MCHC908QY4CDWE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCHC908QY4CDWE 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…
