MC9S08QD2MSC - 8-bit 16MHz 2KB MCU | NXP Semiconductors
MPN: MC9S08QD2MSC ✓ ActiveMC9S08QD2MSC Overview
An S08QD microcontroller is a small, event-oriented embedded controller within the broader hierarchy of microcontrollers, embedded processors, and semiconductors. Its role is to execute firmware, read inputs, control outputs, and coordinate low-complexity peripheral functions. The 8-bit S08 CPU and 16 MHz operating rate make this device appropriate for compact products where a deterministic, straightforward control architecture is preferred over a higher-performance processor platform.
The principal verified feature set includes 8-bit processing, 2 KB of program flash, a 16 MHz operating frequency, and an 8-pin SOIC package. These values define the part's strongest design positions: small control logic, compact PCB implementation, and low component cost. Because the verified product information does not expose RAM size, supply-voltage limits, GPIO count, ADC characteristics, or peripheral configurations, those attributes must be confirmed in the manufacturer datasheet before a design is released.
The S08 architecture provides a dedicated hardware-debug-oriented development ecosystem and a compact instruction set suited to basic embedded control. Engineering use should account for the limited 2 KB flash allocation, which can constrain code size, lookup tables, and multi-function firmware. Firmware organization, bootloader requirements, and production programming method should therefore be evaluated early rather than after PCB layout is frozen.
Typical use cases include simple appliance controls, small sensor-interface products, compact actuator controllers, low-pin-count embedded nodes, and cost-sensitive products where the 16 MHz S08 core provides sufficient execution speed. The 8-pin SOIC package simplifies hand assembly and automated assembly while supporting a modest number of external connections.
The primary design consideration is memory availability. With only 2 KB of flash, modular firmware, extensive diagnostics, and multiple communication stacks may not fit. Designers should preserve pin-compatible PCB options, verify the final pin mapping and electrical limits from the NXP datasheet, and validate any production programming and debug configuration before volume manufacturing.
This page consolidates verified manufacturer and distributor information, practical memory-planning guidance, package constraints, pricing context, and verified same-family replacement information that is not consolidated on a typical distributor listing.
Drop-in alternatives for MC9S08QD2MSC — 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 MC9S08QD2MSC (same form factor and footprint) — differing in Flash Memory, Package.
MC9S08QD2CSC
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →MC9S08QD2MSC Maximum Ratings & Electrical Characteristics
| Microcontroller Type | 8-bit S08QD microcontroller |
| CPU Core | S08 core |
| Architecture | 8-bit |
| Maximum Clock Frequency | 16 MHz |
| Flash Memory | 2 KB (2K x 8) |
| Package | 8-pin SOIC |
| Mounting Type | Surface mount |
| Packing | Reel-reel, 13-inch |
| Minimum Package Quantity | 2500 units |
| Minimum Order Quantity | 2500 units |
| Manufacturer Lead Time | 99 weeks |
| Budgetary Price | 1.55 USD per unit at 10000 units |
MC9S08QD2MSC 2500 units Pin Configuration Guide
Pin configuration for MC9S08QD2MSC (2500 units 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 MC9S08QD2MSC.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S08QD2MSC is suitable for 6 applications: Compact Appliance Control, Small Sensor Interface Controller, Low-Power Actuator Controller, Simple Embedded Control Node, Cost-Optimized Consumer Device, Production Programming and Debug.
Compact Appliance Control
MC9S08QD2MSC fits compact appliance controls that coordinate a small number of digital inputs and outputs without requiring a larger memory footprint. Its 16 MHz S08 core provides adequate control bandwidth for sequencing, timers, and simple user-interface logic, while 2 KB of flash keeps the firmware image compact. The 8-pin SOIC package also reduces PCB width compared with many larger MCU packages. Because the available 2 KB must hold the complete application, engineers should minimize redundant tables and combine nonessential features into production builds. A final schematic review must confirm GPIO availability, supply limits, and pin assignments from the manufacturer datasheet.
Recommended
Small Sensor Interface Controller
MC9S08QD2MSC can serve as a compact controller for a low-complexity sensor interface when the required measurements and protocol handling are modest. The 8-bit S08 core running at 16 MHz is suited to reading discrete inputs, sampling supported on-chip resources, and applying calibration logic before forwarding data. Its 2 KB flash requirement makes short, focused firmware important, particularly when working in an 8-pin SOIC footprint. Engineers should confirm whether the selected MCU variant includes the required ADC or communication functions, because those details were not available in the verified product excerpts and must not be inferred from the family name.
Recommended
Low-Power Actuator Controller
MC9S08QD2MSC is appropriate for simple actuator-control products where a microcontroller must coordinate relays, indicators, motors, or other discrete outputs. The 16 MHz processing rate provides useful timing margin for state machines and basic control loops, while the compact 8-pin SOIC package limits board area in cost-sensitive equipment. The principal engineering constraint is firmware capacity: only 2 KB of flash is specified, so diagnostics and complex motion algorithms may require a larger MCU. Before committing to the design, verify available I/O drive capability, timing peripherals, operating voltage, and thermal behavior from the complete NXP documentation.
Recommended
Simple Embedded Control Node
MC9S08QD2MSC can form the core of a small embedded node that performs local logic, state tracking, and limited peripheral coordination. Its 8-bit S08 architecture is a practical fit when the node does not need extensive networking, large data buffers, or sophisticated user interfaces. The 2 KB program budget encourages a deliberately constrained architecture, and the 8-pin SOIC package supports straightforward board assembly. Designers should reserve flash for diagnostics and future fixes, verify the functional GPIO count, and consider a higher-memory S08QD option if runtime features are likely to grow beyond the available code space.
Recommended
Cost-Optimized Consumer Device
MC9S08QD2MSC supports cost-optimized consumer products that require dependable local control but not a high-performance application processor. The verified budgetary price of 1.55 USD per unit at 10000 units provides a useful planning baseline as of 2026-10-30, while the 8-pin SOIC package reduces assembly complexity. The 2 KB flash limit makes code minimization a continuous design discipline rather than a late optimization. Engineers should also account for the stated 99-week manufacturer lead time and evaluate distributor stock before committing to a launch schedule. Temperature grade, regulatory requirements, and peripheral availability must be confirmed from the manufacturer datasheet.
Recommended
Production Programming and Debug
MC9S08QD2MSC can be used in compact products that require repeatable programming, basic background-debug support, and disciplined firmware deployment. The S08 family's embedded debugging workflow is useful for low-cost development, and the manufacturer information identifies background debugging and breakpoint capability within the broader HCS08 platform. These capabilities help validate simple control firmware without consuming a separate processor. Production teams should still define programming fixtures, protection settings, boot behavior, and checksum procedures. Because the verified excerpts do not specify programming voltage, interface details, or security features, those items must be checked in the official datasheet and programming reference documentation.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08QD2MSC — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08QD2CSC |
|---|---|---|
| Package | 8-pin SOIC | 8-pin SOIC - same |
| Brand | NXP Semiconductors | NXP Semiconductors |
| CPU Core | S08 core | S08QD 8-bit MCU |
| Architecture | 8-bit | 8-bit |
| Maximum Clock Frequency | 16 MHz | 16 MHz |
| Flash Memory | 2 KB (2K x 8) | 2 KB (2K x 8) |
Key Differentiators
- Directly aligned low-end S08QD configuration (vs MC9S08QD2CSC)
- Compact eight-pin implementation (vs MC9S08QD2CSC)
- Quantified cost-planning baseline (vs MC9S08QD2CSC)
Design Notes
Budget the firmware and operating state carefully because the verified product information specifies 2 KB of flash but does not publish RAM size or supply-voltage limits. Avoid enabling unused functions, use the smallest practical buffers, and confirm the memory map in the NXP datasheet. Keep the MCU rail decoupled according to the manufacturer guidance and validate the complete power budget at both startup and maximum operating activity.
Reserve the footprint for the exact NXP ordering option and verify pin 1 orientation, pad dimensions, and solder-mask clearance against the official 8-pin SOIC drawing. Maintain the manufacturer-recommended copper and thermal arrangement around exposed or connected power pins. Because the supplied data does not include a verified pin-by-pin map, do not release a schematic or PCB library footprint without checking the manufacturer package drawing.
Treat the published 1.55 USD value as a 10000-unit budgetary price, not a guaranteed price for every quantity. The 99-week manufacturer lead time also warrants early procurement planning. Confirm authorized-distributor stock, date codes, temperature grade, and whether distributor availability can satisfy the production schedule. PCN notices and lot traceability should be monitored before committing a high-volume product.
Place programming, debug, decoupling, and any communication interfaces in a layout that remains accessible after assembly. Although the 8-pin SOIC package is simple, incorrect programming-pad spacing or an obstructed debug connector can create expensive rework. Prototype programming and boundary scan procedures before production, and isolate programming signals from sources of noise or unintended voltage conditions.
Compliance Information
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, or conflict-mineral status. AEC-Q100 is not applicable to this general-purpose microcontroller unless a separate automotive-qualified ordering option is explicitly selected and verified.