MC908KX2MDWE - 8-Bit 8MHz MCU, 2KB Flash | NXP
MPN: MC908KX2MDWE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.661 | $6.66 |
| 10 | $6.661 | $66.61 |
| 100 | $6.661 | $666.10 |
| 500 | $6.661 | $3,330.50 |
| 1,000 | $6.661 | $6,661.00 |
MC908KX2MDWE Overview
A microcontroller is a programmable semiconductor that integrates a processor core, memory, and peripherals into one device. The MC908KX2MDWE occupies the MCU, embedded-controller, and semiconductor levels of the product hierarchy. Its role is to execute embedded control logic from flash memory while providing the mixed-signal and timing resources required by compact control systems.
The verified listing identifies the MCU as an 8-bit device with an 8 MHz clock, 2 KB organized as 2K by 8 flash, and a 16-pin SOIC package. The product description also identifies the 908KX2 device and EPP configuration. Exact RAM capacity, pin names, peripheral inventory, voltage limits, current consumption, and programming interface details were not supplied in the verified dataset and therefore must be confirmed in the manufacturer documentation before design release.
MC908KX2MDWE uses the high-performance M68HC08 architecture, which the verified description states is object-code upward compatible with M6805, M146805, and M68HC05 families. This compatibility information can assist engineers evaluating legacy firmware, although migration still requires verification of electrical timing, memory maps, peripherals, and tool support. The part is identified as end of life on the NXP product page.
Typical legacy embedded uses include appliance control, simple sequencing, compact industrial interfaces, and embedded systems that retain an M68HC08 software base. Its 8 MHz CPU and 2 KB flash suit applications with modest control complexity rather than graphics-intensive, high-connectivity, or real-time signal-processing workloads.
Designers should verify the complete pinout, oscillator options, reset behavior, programming signals, and peripheral electrical limits from the manufacturer datasheet. Because the device is end of life, production continuity, firmware tool availability, and last-time-buy planning require direct confirmation with NXP or an authorized source.
This page consolidates verified manufacturer and distributor information, lifecycle status, sourcing context, and design cautions for the MC908KX2MDWE. It distinguishes documented facts from missing electrical details and avoids presenting unverified substitute parts as drop-in replacements.
Drop-in alternatives for MC908KX2MDWE — 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 MC908KX2MDWE (same form factor and footprint) — differing in Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
No drop-in alternatives available for this product.
Request AlternativesMC908KX2MDWE Maximum Ratings & Electrical Characteristics
| Device Type | 8-bit microcontroller |
| CPU Architecture | M68HC08 with CPU08 core |
| Maximum Clock Frequency | 8 MHz |
| Program Memory | 2 KB flash organized as 2K x 8 |
| Supply Voltage | 3.3 V or 5 V |
| Package | 16-SOIC, 0.295 inch / 7.50 mm width |
| Mounting Type | Surface mount |
| Product Configuration | 908KX2 with EPP |
| Lifecycle Status | End of life |
| Object-Code Compatibility | Upward-compatible with M6805, M146805, and M68HC05 families |
| Data Bus Width | 8 bit |
| Program Memory Type | Flash |
| Manufacturer | NXP Semiconductors |
| Original Brand | Freescale Semiconductor |
| Category | Microcontroller IC |
MC908KX2MDWE 16-soic, 0.295 inch / 7.50 mm width Pin Configuration Guide
Pin configuration for MC908KX2MDWE (16-soic, 0.295 inch / 7.50 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 MC908KX2MDWE.
Refer to the datasheet for full pin configuration.
Typical Applications
MC908KX2MDWE is suitable for 6 applications: Legacy Appliance Control, Compact Industrial Sequencer, Legacy Motor and Relay Sequencing, Legacy Communications Interface, Instrumentation Control Panel, Obsolete Product Maintenance.
Legacy Appliance Control
The MC908KX2MDWE fits legacy appliance-control boards that already depend on the M68HC08 CPU08 architecture and modest embedded logic. Its documented 8 MHz operating speed supports sequencing, mode selection, timing, and state-machine control, while 2 KB of flash stores firmware in a compact 16-SOIC package. The M68HC08 object-code compatibility statement can reduce software migration effort when retaining established routines, although memory maps, timing, and peripherals still require review. For production, secure qualified inventory because the NXP product page marks the device end of life and verify the complete pinout and electrical limits before redesign.
Recommended
Compact Industrial Sequencer
The MC908KX2MDWE can serve as the fixed-function controller in a compact sequencing module where an 8-bit CPU and 2 KB flash are sufficient. The 8 MHz clock supports deterministic control loops that coordinate discrete outputs, operating modes, and timed transitions, provided peripheral and timing details are confirmed from the datasheet. Its 16-SOIC surface-mount package supports established through-hole-compatible industrial layouts better than a modern fine-pitch redesign. Because lifecycle risk is high, production systems should record firmware revisions, validate every purchased lot, and establish a tested end-of-life buffer rather than relying on continuous distributor availability.
Recommended
Legacy Motor and Relay Sequencing
For a legacy relay or motor-sequencing controller, the MC908KX2MDWE provides enough documented performance for compact control logic at 8 MHz, but its suitability depends on unverified timer, I/O, and electrical details. Engineers should confirm output-drive limits, isolation requirements, protection networks, and timing resources in the manufacturer datasheet rather than assuming modern MCU capabilities. The 2 KB flash limit favors concise state machines over feature-heavy firmware. A safety-conscious migration should preserve proven external drivers and replace only the controller after timing, noise, and fault-response tests pass.
Recommended
Legacy Communications Interface
MC908KX2MDWE may be used in simple polling-based interface equipment built around the M68HC08 architecture, especially where firmware and board revisions are already frozen. The 8-bit, 8 MHz processor can execute protocol routines and supervisory logic, while 2 KB flash constrains buffering and feature complexity. Exact serial-port availability, baud-rate support, and pin multiplexing are not present in the verified data and must not be inferred. Use the controlled datasheet to confirm peripheral resources, then validate timing against the original circuit because a nominal clock match does not guarantee communication compatibility.
Recommended
Instrumentation Control Panel
The MC908KX2MDWE is applicable to legacy front-panel or instrumentation logic that performs button scanning, mode control, status indication, and supervisory sequencing. Its documented 8 MHz execution rate and 2 KB flash are appropriate for modest control tasks, while the 16-SOIC package can simplify reuse of an existing PCB. ADC channels, timer resolution, display interfaces, and GPIO allocation were not supplied and require direct datasheet verification. For instrumentation upgrades, compare measurement accuracy and latency—not merely CPU frequency—because analog front-end compatibility usually determines whether the original board can be retained.
Recommended
Obsolete Product Maintenance
MC908KX2MDWE is most valuable as a maintenance component for deployed equipment that already uses the exact MCU, firmware toolchain, and board revision. The verified M68HC08 object-code compatibility statement can help assess legacy code families, but it does not prove that every function is source- or binary-compatible across devices. Maintenance teams should preserve schematics, firmware binaries, programmer settings, and datasheet copies, then qualify each inventory lot before installation. Because the official page reports end of life, allocate parts through a documented last-time-buy or end-of-life purchasing plan instead of allowing uncontrolled consumption.
Recommended
Recommended Products Summary
Engineering reference data for MC908KX2MDWE — comparison, design guidance, and compliance information.
Selection Guide
Key Differentiators
- Legacy firmware continuity (vs MC908KX2CDWER)
- Established package identity (vs MC908KX2VDWE)
- Defined maintenance target (vs Newer 8-bit MC9S08 devices)
Design Notes
Do not approve a substitute from the ordering-code suffix alone. A true drop-in replacement for MC908KX2MDWE must match the 16-SOIC footprint, every pin function, supply limits, clock requirements, flash organization, reset behavior, programming signals, and legacy software assumptions. The supplied cross-reference search produced a comparison tool but no verified compatible MPN, so PCB and firmware changes may be necessary. This is especially important because MC908KX2MDWE is end of life and an apparently close member of the HC08 family may change temperature grade, timing, or peripherals.
Verify the manufacturer's recommended operating-voltage range, I/O-pin limits, startup behavior, and decoupling requirements before powering a board. The retrieved data supports nominal 3.3 V or 5 V use but does not provide minimum or maximum limits, current consumption, or pin-drive ratings. Preserve the original power-supply topology unless the controlled datasheet proves compatibility. During end-of-life purchasing, inspect storage, marking, and solderability because older inventory may have exceeded recommended bake or floor-life limits.
Treat the original 16-SOIC layout as a complete electrical interface rather than a mechanical outline. Confirm exposed programming, reset, oscillator, supply, ground, and I/O assignments from the controlled datasheet before routing or rework. A pin-compatible footprint is not sufficient if programming voltage, peripheral mapping, or interrupt behavior differs. For maintenance boards, retain the original component designation and approved-source records so mixed inventory cannot silently alter clock, memory, or peripheral behavior.
Compliance Information
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for MC908KX2MDWE.
