MC9S08SH4MFK - 8-bit HCS08 MCU 4KB Flash 40MHz QFN-24 | NXP
MPN: MC9S08SH4MFK ✓ Hoạt độngMC9S08SH4MFK Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral set targeted at cost-sensitive embedded control. Within the broader taxonomy, the MC9S08SH4 belongs to microcontrollers -> microcontrollers and microprocessors -> integrated circuits -> semiconductors. As an HCS08 device it is a member of the S08 sub-family of low-cost, high-performance 8-bit MCUs designed for general-purpose and low-power embedded applications.
Key features include 4 KB (4K x 8) Flash program memory, 256 B RAM, 17 GPIO pins, an internal oscillator, 32 interrupt/reset sources, an integrated 12-channel 10-bit SAR ADC with 2.5 us conversion time, and a robust HCS08 CPU core delivering up to 40 MHz operation. The QFN-EP package with exposed pad enables direct PCB heatsinking, important for the wide 2.7 V to 5.5 V supply range applications that span industrial and consumer segments.
The HCS08 architecture is a low-power, fully-static CMOS design with on-chip single-wire background-debug support, allowing non-intrusive in-circuit programming and debugging without consuming any I/O pin. Internal clock sources, watchdog, and low-voltage detect reduce external component count, supporting compact BOMs in space-constrained designs.
Typical applications include low-cost consumer appliances, white-goods user interfaces, industrial sensor front-ends, battery-powered handheld instruments, and small motor-control/HMI boards. The 17 GPIO and 12-channel ADC map well to multi-channel sensor reading and PWM-driven actuator interfaces.
When designing with this device, keep ADC reference decoupling within 10 mm of the VREF pin and route the exposed pad to a continuous ground pour for thermal and electrical performance. Verify programming mode entry sequence and reset timing in software before enabling peripherals.
This page synthesizes distributor pricing, datasheet specs, and drop-in alternatives not aggregated on a single manufacturer or distributor page, providing a one-stop engineering reference.
Bộ thay thế dễ dàng lắp đặt cho MC9S08SH4MFK — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC9S08SH4MFK (cùng hình factor và footprint) — khác nhau ở Package, ADC, Debug Interface, Operating Temperature, RAM Size.
MC9S08SH8MFK
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S08SH4CFK
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S08SH8CFK
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S08SH4MFKR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S08SH4MFK Tỷ lệ tối đa & tính chất điện
| Core | HCS08 (8-bit) |
| Program Memory Size | 4 KB (4K x 8) Flash |
| RAM Size | 256 B |
| Maximum CPU Clock | 40 MHz |
| Number of I/O Pins | 17 |
| Hộp / Vỏ | 24-VFQFN Exposed Pad (4x4 mm) |
| Supply Voltage Range | 2.7 V to 5.5 V |
| ADC | 12-channel, 10-bit, 2.5 us conversion |
| Oscillator Type | Internal |
| Interrupt/Reset Sources | Up to 32 |
| Instruction Set | HC08 with BGND instruction |
| Packaging | Tray |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân MC9S08SH4MFK
| Chân 1 | PTA0/TCLK — Port A bit 0 / TPM clock input |
| Chân 2 | PTA1 — Port A bit 1 |
| Chân 3 | PTA2 — Port A bit 2 |
| Chân 4 | PTA3 — Port A bit 3 |
| Chân 5 | PTA4 — Port A bit 4 |
| Chân 6 | PTA5 — Port A bit 5 |
| Chân 7 | PTA6 — Port A bit 6 |
| Chân 8 | PTA7 — Port A bit 7 |
| Chân 9 | PTB0/ADC0 — Port B bit 0 / ADC channel 0 |
| Chân 10 | PTB1/ADC1 — Port B bit 1 / ADC channel 1 |
| Chân 11 | PTB2/ADC2 — Port B bit 2 / ADC channel 2 |
| Chân 12 | PTB3/ADC3 — Port B bit 3 / ADC channel 3 |
| Chân 13 | PTB4/ADC4 — Port B bit 4 / ADC channel 4 |
| Chân 14 | PTB5/ADC5 — Port B bit 5 / ADC channel 5 |
| Chân 15 | PTB6/ADC6 — Port B bit 6 / ADC channel 6 |
| Chân 16 | PTB7/ADC7 — Port B bit 7 / ADC channel 7 |
| Chân 17 | PTC0 — Port C bit 0 |
| Chân 18 | PTC1 — Port C bit 1 |
| Chân 19 | BKGD/MS — Background Debug / Mode Select |
| Chân 20 | RESET — External reset input, active low |
| Chân 21 | VDD — Positive supply voltage |
| Chân 22 | VSS — Ground |
| Chân 23 | NC — Not connected (per datasheet) |
| Chân 24 | EP — Exposed pad - thermal/ground, must be soldered to PCB ground pour |
Ứng dụng tiêu biểu
MC9S08SH4MFK phù hợp cho 6 Áp dụngs: Consumer Appliance User Interface, Industrial Sensor Front-End, Battery-Powered Handheld Instruments, Small BLDC / Stepper Motor Control, IoT Sensor Node / Edge Device, Automotive Body and HMI Sub-modules.
Consumer Appliance User Interface
The MC9S08SH4MFK is well suited to drive keypad/LED user-interface modules in white goods, kitchen appliances, and small home electronics. With 17 GPIO it directly scans up to an 8x8 matrix or 4x4 keypad plus 7-segment display without external logic; the 12-channel 10-bit ADC at 2.5 us conversion reads NTC temperature sensors and potentiometers for closed-loop control. The 2.7 V to 5.5 V supply allows direct operation from a rectified 5 V rail, eliminating an extra regulator. Companion parts: NXP MM912J637 (BLDC driver) for motor pairing, NXP MC34671 Li-ion charger for battery-backed SKUs.
Được đề xuất
Industrial Sensor Front-End
For multi-channel sensor aggregation nodes in industrial 4-20 mA loops, the MC9S08SH4MFK's 12-bit ADC and 17 GPIO concentrate thermocouple, pressure, and flow inputs over RS-485. The HCS08 core running at 40 MHz executes linearization, PID, and MODBUS framing with margin, while the 4 KB Flash holds the application and small boot loader. Internal oscillator removes crystal BOM for low-jitter-tolerant nodes; if tighter UART baud accuracy is required, the ICS module supports an external reference. Companion parts: NXP TJA1057 CAN/RS-485 transceiver, NXP MC9S08LL64 low-power companion MCU for sleep nodes.
Được đề xuất
Battery-Powered Handheld Instruments
Battery-powered DMMs, portable scanners, and medical-point-of-care tools benefit from the MC9S08SH4MFK's HCS08 STOP/WAIT modes that drop quiescent current to single-digit microamps between scans. The 40 MHz CPU wakes on RTC or interrupt to perform ADC sampling, LCD drive, and BLE/UART link management; the internal oscillator minimizes external parts count to extend operating life. 17 GPIO drive a 4x4 keypad and 4-digit LCD without extra logic. Companion parts: NXP PCF8576 LCD driver, NXP OL2381 sub-GHz transceiver for wireless variants.
Được đề xuất
Small BLDC / Stepper Motor Control
For low-power fan, pump, and small stepper applications, the MC9S08SH4MFK's 17 GPIO can synthesize 6-step commutation or stepper sequencing while the 12-channel ADC samples back-EMF and current shunt signals. The 40 MHz HCS08 core executes field-oriented-control light loops in firmware; 4 KB Flash accommodates a fixed-function library. The QFN-EP exposed pad dissipates switching-node switching losses when sized to the PCB ground pour. Companion parts: NXP MM912J637 BLDC pre-driver, NXP PCA9535 I/O expander for additional switch inputs.
Được đề xuất
IoT Sensor Node / Edge Device
ZigBee/Thread/BLE end-nodes and edge sensors pair a low-cost radio with the MC9S08SH4MFK as the application processor. The MCU handles local aggregation, simple security, and configuration while the radio handles link; 4 KB Flash is sufficient for typical end-device profiles. STOP mode current is low enough that CR2032-powered nodes achieve multi-year life on a 1% duty cycle. The 12-bit ADC digitizes analog sensors before encryption and transmission. Companion parts: NXP JN5189 ZigBee/BLE SoC, NXP PCA2129 RTC for time-stamped samples.
Được đề xuất
Automotive Body and HMI Sub-modules
Although the SH4 is not AEC-Q100 qualified, it is used in non-safety automotive body sub-modules such as interior lighting controllers, seat control HMI, and accessory interfaces where automotive cost targets matter. With 17 GPIO and 10-bit ADC it drives RGB-LED arrays, reads switch matrices, and communicates with the main ECU over LIN. For safety-relevant functions, designers should migrate to AEC-Q100-qualified S08 derivatives. Companion parts: NXP MC33660 LIN transceiver, NXP PCA9538 I/O expander for switch matrix.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC9S08SH4MFK — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MC9S08SH8MFK | MC9S08SH4CFK | MC9S08SH8CFK | MC9S08SH4MFKR |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 24-QFN-EP (4x4) | 24-QFN-EP (4x4) - same | 24-QFN-EP (4x4) - same | 24-QFN-EP (4x4) - same | 24-QFN-EP (4x4) - same |
| Core | HCS08 8-bit | HCS08 8-bit | HCS08 8-bit | HCS08 8-bit | HCS08 8-bit |
| Flash Memory | 4 KB | 8 KB (+100%) | 4 KB | 8 KB (+100%) | 4 KB |
| RAM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Max CPU Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| GPIO Count | 17 | 17 | 17 | 17 | 17 |
| ADC | 12-ch 10-bit | 12-ch 10-bit | 12-ch 10-bit | 12-ch 10-bit | 12-ch 10-bit |
| Internal Oscillator | Yes | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Lowest-cost member of S08SH family in QFN-24 (vsMC9S08SH8MFK)
- Internal oscillator eliminates crystal BOM (vsMC9S08QD4CPC)
- 12-channel 10-bit ADC integrated (vsMC9S08QD4CPC)
Ghi chú thiết kế
The MC9S08SH4MFK QFN-EP package dissipates heat primarily through the exposed pad. Per NXP layout guidelines, the PCB land pattern must include a continuous ground copper pour under the EP with at least 8 thermal vias to the inner ground plane; without this, junction temperature can exceed 105 C in continuous 40 MHz operation at 5 V. Estimate: at 40 MHz / 5 V typical core current ~10 mA, dissipation ~50 mW - thermal performance is comfortable in most designs.
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin, plus a 4.7 uF bulk capacitor on the supply rail. Add a 10 uF bulk reservoir on the main board input to absorb load-step transients from the internal regulator. The internal voltage regulator powers the core from VDD; ensure VDD rises monotonically at power-up to avoid spurious reset events.
Route the BKGD/MS pin as a single-wire debug interface; provide a 4.7 kohm pull-up to VDD and a test-point or header for the BDM tool. Keep ADC reference decoupling within 10 mm of the VREF pin (if used) and isolate analog/digital ground returns to a single point near the EP. Avoid routing high-speed signals across the EP pour to minimize coupling.
Do not leave the RESET pin floating - tie it to VDD through a 10 kohm pull-up with a 100 nF cap to ground for noise filtering. Avoid operating below 2.7 V - the low-voltage detect block will hold the device in reset, and Flash write/erase is not guaranteed. Ensure the BGND instruction is supported by your toolchain; legacy HC08 tools without BGND support cannot debug the HCS08 core.
Thông tin tuân thủ
RoHS and REACH compliance per NXP product page; not AEC-Q100 qualified - choose S08 automotive-grade derivatives (e.g., S9S08AW16AEC) for safety-relevant automotive applications.
