MCHC908QT2MDWE - 8-Bit 8MHz 1.5KB MCU | NXP
MPN: MCHC908QT2MDWE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MCHC908QT2MDWE Overview
The M68HC08 family belongs to the 8-bit microcontroller hierarchy and uses an enhanced M68HC08 CISC processor with Von Neumann architecture. A microcontroller integrates a CPU core, program memory, data memory, input/output ports, and peripherals into one device, allowing basic control logic to be implemented in a small, low-component-count system. The MCHC908QT2MDWE is positioned as a low-cost, space-saving solution for basic embedded applications.
Verified device information identifies 1.5KB of flash memory, 128 x 8 RAM, five I/O pins, an internal oscillator, and an 8MHz maximum speed. The part also includes an ADC, as indicated by the distributor and datasheet-search descriptions. Its 8-SOIC package is listed as an 8-SOIC measuring 0.209 inches, or 5.30mm, in width. Tube packaging is identified in the available specification data.
The target MPN is marked End of Life on the NXP product page. Engineers should therefore treat it as a legacy component and verify supply, sourcing, and any available migration path before starting a new design. Distributor listings may provide inventory or quote-based purchasing, but availability does not establish that the component is active or suitable for unrestricted new production.
Typical applications include simple motor or relay control, low-cost sensor interfaces, keypad and switch input systems, compact consumer controls, and basic embedded automation nodes. The small memory footprint favors deterministic control loops rather than networking, graphical interfaces, or data-intensive applications. Firmware must fit within 1.5KB of flash and account for the limited 128-byte RAM budget.
The primary design considerations are package fit, pin-level compatibility, programming support, and the end-of-life sourcing risk. A replacement should not be selected from package similarity alone; firmware, memory-map, peripheral, electrical, timing, and software-tool compatibility must be verified against the replacement datasheet. The available cross-reference results identify comparison candidates but do not establish five verified drop-in replacements.
This page combines verified distributor specifications, the manufacturer lifecycle signal, and practical sourcing guidance. It is intended to help engineers locate the datasheet, understand the device constraints, and assess whether a redesign or qualified legacy sourcing strategy is necessary.
Drop-in alternatives for MCHC908QT2MDWE — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MCHC908QT2MDWE (same form factor and footprint) — differing in Package, RoHS Status, Product Type, ADC, CPU Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC908QT4ACDWE
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View Datasheet →MC908QT1AMDWER
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View Datasheet →MC908QT2ACDWER
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View Datasheet →MCHC908QT2CDWE
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View Datasheet →MC9S08QG4CDNE
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View Datasheet →MCHC908QT2MDWE Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit microcontroller |
| Architecture | CISC with Von Neumann architecture |
| Processor Family | Enhanced M68HC08 |
| Maximum Speed | 8 MHz |
| Program Memory Size | 1.5 KB (1.5K x 8) flash |
| RAM Size | 128 x 8 bytes |
| Number of I/O | 5 |
| Oscillator Type | Internal |
| ADC | Present |
| Package | 8-SOIC, 0.209 inch / 5.30 mm width |
| Mounting Type | Surface mount |
| Packaging | Tube |
| Lifecycle Status | End of Life |
| RoHS Status | unknown |
| REACH Status | unknown |
| AEC-Q100 Status | not_applicable |
| Lead-Free Status | unknown |
| Halogen-Free Status | unknown |
MCHC908QT2MDWE 8-soic, 0.209 inch / 5.30 mm width Pin Configuration Guide
Pin configuration for MCHC908QT2MDWE (8-soic, 0.209 inch / 5.30 mm width package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MCHC908QT2MDWE.
Refer to the datasheet for full pin configuration.
Typical Applications
MCHC908QT2MDWE is suitable for 6 applications: Basic Motor and Relay Control, Low-Cost Analog Sensor Interface, Keypad and Discrete Input Control, Small Consumer Appliance Controller, Embedded Automation Node, Educational and Proof-of-Concept Embedded System.
Basic Motor and Relay Control
MCHC908QT2MDWE fits a compact controller that reads switches or sensors and operates a relay, solenoid, or small motor-control stage. Its 8MHz HC08 core provides deterministic instruction timing for simple control loops, while the 1.5KB flash limit favors a focused firmware image rather than a broad application framework. The ADC can monitor an analog feedback or supply condition when its detailed electrical parameters are confirmed. Because the MCU is End of Life, this use is best treated as maintenance of an existing platform or a qualified legacy build, with controlled sourcing and firmware regression testing.
Recommended
Low-Cost Analog Sensor Interface
The integrated ADC identified for MCHC908QT2MDWE makes the device suitable for simple analog sensor monitoring, such as threshold detection, resistive sensing, or a low-bandwidth measurement node. The 128-byte RAM and 1.5KB flash support compact acquisition and control code, but they impose strict buffering and firmware constraints. A production design should verify ADC resolution, input range, acquisition time, reference stability, and pin multiplexing from the official datasheet. The End of Life status makes this especially appropriate for maintaining existing equipment unless sourcing and qualification controls are in place.
Recommended
Keypad and Discrete Input Control
For keypad scanning, mode buttons, limit switches, or simple product controls, MCHC908QT2MDWE offers a small 8-bit control platform with five I/O lines and an 8MHz clock. The limited memory footprint favors debounce and state-machine logic implemented directly in firmware, avoiding unnecessary abstraction layers. Designers should confirm the actual port pins, pull-up requirements, input thresholds, and reset behavior from the datasheet before PCB layout. For new platforms, a current MCU may provide better lifecycle assurance; for an existing HC08 design, preserving the known toolchain can reduce migration risk.
Recommended
Small Consumer Appliance Controller
MCHC908QT2MDWE can serve as a compact controller in a basic appliance or consumer product where the required functions are limited to button handling, status indication, timing, and actuator sequencing. Its 8-SOIC package helps preserve a small board footprint when an existing HC08 design is being maintained. The 1.5KB flash and 128-byte RAM should be checked against the complete firmware and stack requirements, including brownout handling and production test. Since NXP marks the device End of Life, appliance programs with long lifecycles should evaluate a current replacement before committing to new tooling.
Recommended
Embedded Automation Node
The device is appropriate for a simple automation node that converts discrete inputs into a limited control action and monitors a basic analog value. The HC08 architecture and 8MHz operating speed suit deterministic, low-bandwidth tasks, while the small package helps fit the controller into compact equipment. Firmware should be structured for memory endurance, watchdog behavior, reset recovery, and input debouncing because these features are important in unattended industrial environments. For a new safety- or lifecycle-critical node, use a currently supported MCU with verified compliance and supply support.
Recommended
Educational and Proof-of-Concept Embedded System
MCHC908QT2MDWE is useful for teaching or prototyping basic 8-bit embedded-control concepts, including port configuration, interrupt-style control logic, ADC use, and low-resource firmware design. Its limited memory makes resource budgeting visible and can help learners understand the trade-offs between code size, RAM usage, and real-time behavior. The device should be used only where End of Life sourcing and toolchain availability are acceptable for the experiment. Before classroom or prototype deployment, obtain the official pinout, programming procedure, and electrical limits rather than relying on distributor summaries.
Recommended
Recommended Products Summary
Engineering reference data for MCHC908QT2MDWE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC908QT4ACDWE | MC908QT1AMDWER | MC908QT2ACDWER | MCHC908QT2CDWE | MC9S08QG4CDNE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor | NXP Semiconductors | NXP Semiconductors |
Key Differentiators
- Known 8MHz HC08 control platform with compact memory footprint (vs MC908QT4ACDWE)
- Existing legacy identification through NXP product documentation (vs MC9S08QG4CDNE)
- Small 8-SOIC implementation for space-constrained boards (vs MC908QT1AMDWER)
Design Notes
Do not treat the 8-SOIC package as proof of replacement compatibility. The verified data confirms the target package but does not provide a complete pinout or alternate-device electrical tables. Obtain the official MCHC908QT2MDWE datasheet and cross-check power pins, programming signals, I/O mapping, reset behavior, and exposed connections before substituting any comparison candidate. This is especially important because the product is End of Life.
Validate the supply voltage, decoupling, and brownout behavior from the manufacturer datasheet because those values are not present in the verified search data. Place the required supply capacitor close to the device pins and keep analog ADC routing away from fast-switching nodes. If the MCU controls a relay, motor, or solenoid, isolate the high-current path from the MCU supply and account for transient energy and ground return currents during design testing.
The verified package is an 8-SOIC measuring 0.209 inch, or 5.30mm, in width. Confirm the exact land pattern, pin numbering, solder-mask clearance, and programming access before releasing PCB artwork. Maintain a stable ground plane and route sensitive ADC inputs away from switching nodes and high-current outputs. Because the device is a legacy 8-bit MCU, a deliberate footprint revision control process helps prevent accidental substitution with a package-compatible but electrically different part.
The 1.5KB flash and 128-byte RAM limits are the central firmware constraints. Estimate code size, stack depth, interrupt requirements, and any ADC data handling before committing to a feature set. Avoid adding a runtime library or logging feature without measuring its memory cost. For a redesign, compare the replacement's map file, startup code, interrupt vector table, peripheral registers, and programming workflow rather than comparing headline clock speed alone.
Compliance Information
The verified web results identify the device as an NXP End of Life MCU but do not provide RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. No compliance status is assumed.
