MC9S08SH4CFK - 40MHz 8-Bit 4KB MCU | NXP | 24-QFN
MPN: MC9S08SH4CFK ✗ 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 |
MC9S08SH4CFK Overview
What is an 8-bit microcontroller? An 8-bit microcontroller is a semiconductor that integrates a CPU, program memory, data memory, peripherals, and I/O into one device. Its MCU status places it in the embedded-control hierarchy: microcontroller → embedded controller → semiconductor. The S08 architecture provides a compact platform for sequential control, sensor reading, communication, and actuator logic where higher processing capacity is unnecessary.
Key verified features include 4 KB of Flash program storage, a 40 MHz HCS08 processor, 8-bit bus width, support for as many as 32 interrupt or reset sources, integrated timers, and a 12-channel ADC with 10-bit resolution. One distributor source states a 2.7 V to 5.5 V supply range, while another describes the family as intended for 5 V applications. Supply limits must therefore be checked against the official datasheet before design release.
The 24-QFN-EP package, identified as HVQCCN and measuring 4 mm by 4 mm in verified distributor records, supports compact PCB layouts but requires careful thermal-pad assembly and solder inspection. The exposed pad is electrically and thermally significant and cannot be treated as an unused lead. Programming, reset, clocking, analog grounding, and decoupling require layout review against the manufacturer documentation.
Typical applications include low-cost industrial controllers, compact sensor nodes, timer-based modules, simple communications equipment, appliance controls, and automotive or 5 V embedded subsystems when the exact device qualification and electrical limits are confirmed. The 10-bit ADC supports basic analog measurement, while timers support periodic events and time-based control.
The primary design tradeoff is limited 4 KB Flash capacity. Firmware should be compact, interrupt handlers efficient, and memory use reviewed before adding protocols or features. Confirm current lifecycle and sourcing status with NXP because the official product page is marked End of Life. This page combines verified lifecycle, package, memory, and distributor information with selection guidance and explicit data gaps.
Drop-in alternatives for MC9S08SH4CFK — 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 MC9S08SH4CFK (same form factor and footprint) — differing in Package, ADC, Product Type, Mounting Type, Supply Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08SH8MTG
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.55 / Unit
View Datasheet →MC9S08SH16CTG
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$7.1511 / Unit
View Datasheet →MC9S08SH4CFK Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit S08SH microcontroller |
| Processor Core | HCS08 CPU |
| Maximum Clock Frequency | 40 MHz |
| Flash Memory | 4 KB (4K x 8) |
| Data Bus Width | 8 bit |
| RAM Memory | 256 B |
| Supply Voltage Range | 2.7 V to 5.5 V |
| ADC Resolution | 10 bit |
| ADC Channel Count | 12 channels |
| Interrupt and Reset Sources | Up to 32 sources |
| Integrated Peripherals | Timers and ADC |
| Operating Application Range | Low-end 5 V embedded applications |
| Package | 24-QFN-EP, 4 mm x 4 mm |
| Package Code | HVQCCN |
| Terminal Count | 24 terminals |
| Mounting Type | No-lead surface mount |
| Temperature Grade | Industrial |
| Process Technology | 0.25 µm |
| Power Consumption | Low-power operation |
| Lifecycle Status | End of Life |
MC9S08SH4CFK hvqccn Pin Configuration Guide
Pin configuration for MC9S08SH4CFK (hvqccn 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 MC9S08SH4CFK.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S08SH4CFK is suitable for 6 applications: Cost-Sensitive Industrial Control, Compact Sensor Interface Node, Timer-Based Appliance Controller, Automotive Auxiliary Control Module, Simple Communications Interface, Measurement and Threshold Module.
Cost-Sensitive Industrial Control
The MC9S08SH4CFK fits compact low-cost controllers because it combines a 40 MHz HCS08 core, timers, and a 10-bit ADC in a 4 mm by 4 mm package. It can execute sequencing, debounce, timeout, and analog-threshold tasks in applications where 4 KB of Flash and 256 B of RAM are sufficient. The industrial grade reported by a distributor is relevant to industrial control planning, although the exact operating-temperature limits should be confirmed in the manufacturer datasheet. Because the device is End of Life, firmware should avoid unnecessary feature growth and production teams should secure traceable inventory.
Recommended
Compact Sensor Interface Node
The 12-channel, 10-bit ADC makes the MC9S08SH4CFK relevant for small sensor-conditioning and monitoring nodes. Each analog channel can feed control logic when the required accuracy, sampling rate, and input range fit the verified ADC specifications. The 256 B of RAM and 4 KB Flash encourage a compact acquisition architecture with limited buffering and straightforward averaging or threshold decisions. Analog layout remains critical: separate noisy and quiet returns, minimize trace length, and confirm the package's exposed-pad connection before finalizing grounding and shielding.
Recommended
Timer-Based Appliance Controller
For appliance and household equipment, the MC9S08SH4CFK can use its integrated timers for motor sequencing, delayed activation, debounce handling, and periodic maintenance routines. Its 40 MHz maximum clock supports responsive state-machine control without requiring a larger processor, while the 5 V-oriented family positioning matches many legacy control boards. Firmware size must remain controlled because only 4 KB of Flash is verified. Validate inductive-load suppression, relay-driver isolation, and supply transients at the board level rather than relying on MCU specifications alone.
Recommended
Automotive Auxiliary Control Module
The MC9S08SH4CFK may fit legacy auxiliary automotive modules when the exact orderable variant has confirmed industrial or automotive qualification, the required temperature range is met, and traceable supply is available. Its timers and ADC support switches, sensors, and simple actuator supervision, while 4 KB of Flash limits protocol and diagnostic complexity. The verified sources do not establish AEC-Q100 qualification for this MPN, so automotive deployment must not rely on family-level assumptions. Production use also requires lifecycle review because NXP marks the device End of Life.
Recommended
Simple Communications Interface
The MC9S08SH4CFK can serve a low-bandwidth communications endpoint when the selected protocol fits 4 KB of Flash and 256 B of RAM. Timers support baud-rate generation and receive timing, while GPIO can carry serial signals or a simple bus interface. The trade-off is strict firmware budgeting: buffering, framing, diagnostics, and security features can consume the available memory quickly. Choose a larger microcontroller if protocol growth or received-data buffering is expected. Also verify whether the target S08 family variant exposes the required serial peripheral on the same package pins.
Recommended
Measurement and Threshold Module
The MC9S08SH4CFK's 12-channel 10-bit ADC is suitable for compact threshold, averaging, and alarm modules that monitor several analog inputs. A periodic timer can trigger measurements, while firmware can compare results against calibrated limits and update outputs or indicators. The 40 MHz class processor provides enough timing margin for simple digital filtering, but conversion timing and analog-reference requirements must be verified from the official datasheet. Keep sensitive analog routing away from switching nodes and ensure the exposed thermal pad is handled according to the manufacturer's package guidance.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08SH4CFK — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08SH8MTG | MC9S08SH16CTG |
|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Flash Memory | 4 KB | 8 KB indicated by MPN, not independently verified | 16 KB indicated by MPN, not independently verified |
Key Differentiators
- Memory footprint favors compact control firmware (vs MC9S08SH8MTG)
- Higher-memory same-brand family option (vs MC9S08SH16CTG)
- Verified package and sourcing documentation (vs MC9S08JS16CFK)
Design Notes
Treat the exposed pad as a mandatory package feature, not spare copper. Confirm its electrical connection, thermal role, paste pattern, and stencil requirements from the manufacturer package drawing. Place the MCU close to its supporting crystals, reset circuitry, and decoupling. The verified 4 mm by 4 mm footprint leaves little routing margin, so perform pad, courtyard, and exposed-pad checks against the exact HVQCCN land pattern before fabrication.
Validate the 2.7 V to 5.5 V distributor-reported range against official absolute-maximum and operating-condition tables. Place the manufacturer's recommended bypass capacitors at the supply pins with short, low-inductance traces, and keep analog return current separate from switching-node return paths. Because the MCU is End of Life, also verify component markings, lot traceability, and solderability before building remaining inventory.
Do not assume a 40 MHz CPU rate, 4 KB Flash, or 2.7 V minimum supply from the family name alone; these limits can vary by revision and package. Likewise, do not substitute a same-family part based only on apparent similarity. Build a register, pin, memory, and peripheral map, then compare every used signal and timing constraint with the candidate's official datasheet. This is especially important when maintaining an End-of-Life design.
Compliance Information
The verified product information reports industrial grade but does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for this exact MPN. Exact automotive qualification must not be inferred from family membership.
