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NXP Semiconductors MC9S08SH4CWJR
- Part No.:
- MC9S08SH4CWJR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MC9S08SH4CWJR.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,349
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Product details
Overview
MC9S08SH4CWJR from Freescale Semiconductor is an 8-bit HCS08 microcontroller featuring a 40-MHz CPU, 4 KB Flash memory, 512 B RAM, and integrated peripherals including 10-bit ADC, SPI, I²C, SCI, TPM, RTC, and analog comparator. It supports two very low-power stop modes and operates across -40°C to 105°C industrial temperature range in a 24-pin QFN package.
For engineers reviewing the MC9S08SH4CWJR datasheet, MC9S08SH4CWJR pinout, MC9S08SH4CWJR application, or MC9S08SH4CWJR equivalent, this device is selected for cost-sensitive, low-power embedded control in motor drives, sensor interfaces, and industrial automation where compact footprint, on-chip debug, and mixed-signal integration are critical.
Technical Context
The MC9S08SH4CWJR implements the HCS08 CPU core with HC08 instruction set plus BGND, supporting up to 32 interrupt/reset sources. Its internal clock source (ICS) uses a frequency-locked loop (FLL) with precision-trimmed internal reference enabling ±2% bus frequency accuracy from 2 MHz to 20 MHz over voltage and temperature.
Peripherals include a 12-channel 10-bit ADC with 2.5 µs conversion time and internal temperature sensor, dual TPM modules with PWM/IC/OC capability, and a real-time counter (RTC) that runs on a free-running 1 kHz low-power oscillator in all MCU modes-including Stop3-enabling cyclic wake-up without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 8-bit core, 40-MHz max operation - enables deterministic real-time control with low latency interrupt response. |
| Flash Memory | 4 KB on-chip Flash - supports in-system programming, erase/program over full voltage/temperature, with block protection. |
| RAM | 512 bytes - sufficient for stack, variables, and small buffers in resource-constrained embedded applications. |
| ADC | 12-channel, 10-bit resolution, 2.5 µs conversion - supports fast sampling of analog sensors and motor feedback signals. |
| Operating Temp | -40°C to +105°C - qualified for industrial environments including motor control and factory automation equipment. |
| Package | 24-pin QFN (98ASA00474D), 4 × 4 mm, 0.5 mm pitch - surface-mount, thermally enhanced, space-efficient for high-density PCBs. |
| Power Modes | Run, Wait, Stop2, Stop3 - Stop3 retains RTC and ADC operation while drawing sub-µA current, enabling ultra-low-power monitoring. |
Pinout & Package
MC9S08SH4CWJR is housed in a 24-pin QFN package (case outline 98ASA00474D), with exposed thermal pad for improved heat dissipation and mechanical stability. Pin assignments follow Freescale's standard SH-series mapping for compatibility across SH4/SH8 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDD powers digital logic; separate VDDAD/VSSAD pins isolate analog section for clean ADC reference. |
| XTAL, EXTAL | Crystal oscillator inputs | Supports 31.25 kHz–38.4 kHz or 1–16 MHz crystals/resonators; optional bypass for internal ICS-only clocking. |
| BKGD/MS | Single-wire background debug | Enables in-circuit debugging and programming via dedicated SWD interface without dedicated JTAG pins. |
| PTA0–PTA7 | Port A GPIO | 8-bit general-purpose port with configurable pull-ups, slew rate, drive strength, and interrupt-on-change capability. |
| PTB0–PTB7 | Port B GPIO | Includes ganged output option on PTB[5:2]; supports peripheral function multiplexing (SCI, SPI, TPM, ADC triggers). |
| PTC0–PTC3 | Port C GPIO | 4-bit port with same configurability as PTB; PTC[3:0] also support ganged output and peripheral functions. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external reset signal or watchdog timeout assertion. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Clock Source (ICS) | FLL-based system clock generation with ±2% accuracy over temp/voltage - eliminates need for external crystal in many applications. |
| Stop3 Low-Power Mode | RTC and ADC remain active while CPU and most peripherals halt - enables battery-powered wake-up every 1 ms without external timer. |
| On-Chip Debug Interface | Single-wire background debug (SWD) with breakpoint support - reduces debug footprint and simplifies board layout vs. multi-pin JTAG. |
| Integrated Analog Functions | 10-bit ADC with internal temperature sensor + bandgap reference + analog comparator - enables self-monitoring and closed-loop analog control without external ICs. |
| Ganged Output Capability | Simultaneous write to PTB[5:2] or PTC[3:0] - simplifies driving multi-segment LED displays or parallel control lines with single register access. |
Applications
| Motor Control Interface | Sensor Signal Conditioning |
|---|---|
Use Scenario: Controlling brushless DC motor commutation using Hall-effect sensor inputs and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Real-time execution of commutation logic, ADC sampling of current feedback, and precise TPM-generated 3-phase PWM timing. Use Value: Integrated ADC, TPM, and RTC allow synchronized sampling and switching at ≤20 kHz with <1 µs jitter, reducing BOM count and PCB area. | Use Scenario: Reading and linearizing outputs from resistive temperature detectors (RTDs) and analog pressure transducers in HVAC systems. IC Role / Device Role / Timing Role: Analog front-end signal acquisition, offset/gain correction in firmware, and periodic data logging via SCI or I²C. Use Value: On-chip 10-bit ADC with internal bandgap reference and temperature sensor enables drift compensation without external precision references. |
| Industrial Timer Module | Low-Power Remote Monitor |
Use Scenario: Implementing programmable delay timers, pulse-width measurement, or duty-cycle monitoring in PLC I/O modules. IC Role / Device Role / Timing Role: High-resolution input capture and output compare using TPM channels, with RTC-backed timestamping. Use Value: Dual TPM modules support simultaneous edge detection and PWM generation, enabling bidirectional timing tasks in one chip. | Use Scenario: Battery-operated environmental sensor node transmitting temperature/humidity data every 5 minutes via UART-to-LoRa bridge. IC Role / Device Role / Timing Role: System controller managing sleep/wake cycles, ADC sampling, data formatting, and serial transmission. Use Value: Stop3 mode draws <1 µA while maintaining RTC alarm and ADC readiness - extends CR2032 battery life beyond 2 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08SH8CWJR | 8 KB Flash, 1 KB RAM, identical peripheral set and pinout - direct upgrade path with doubled memory capacity. | Required when firmware exceeds 4 KB or additional RAM is needed for communication stacks or larger buffers. | Select MC9S08SH8CWJR if future firmware expansion or protocol stack integration (e.g., Modbus RTU) is anticipated. |
| S9KEAZ128AMLH | ARM Cortex-M0+ core, 128 KB Flash, 16 KB RAM, enhanced ADC (16-bit), but different architecture and non-pin-compatible package (64-LQFP). | Suitable for next-generation designs requiring higher performance, richer peripherals, or long-term roadmap alignment with Kinetis E-series. | Choose S9KEAZ128AMLH only for new designs targeting scalable software architecture and extended lifecycle support beyond HCS08. |
Compared with MC9S08SH4CWJR, MC9S08SH8CWJR offers immediate memory headroom with zero hardware redesign, while S9KEAZ128AMLH provides architectural modernization at the cost of full revalidation and layout change.
Availability
MC9S08SH4CWJR is available at Aetrix Electronics and suitable for motor control interfaces, sensor signal conditioning, industrial timer modules, and low-power remote monitors requiring stable component supply across extended product lifecycles.
Supply support for MC9S08SH4CWJR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Freescale Semiconductor (now part of NXP Semiconductors since 2015) was a leading designer of embedded processors, analog, and connectivity solutions for automotive, industrial, and consumer markets.
The MC9S08SH series targets cost-optimized, low-power 8-bit control applications - emphasizing mixed-signal integration, robust debug capability, and industrial temperature reliability in compact packages.
FAQ
What is the maximum operating frequency of the MC9S08SH4CWJR?
The MC9S08SH4CWJR features an HCS08 CPU core rated for up to 40 MHz operation. This maximum frequency is achievable when using the internal clock source (ICS) with FLL enabled and appropriate bus divider settings. Actual sustained bus frequency depends on supply voltage and temperature; electrical characteristics specify 20 MHz maximum bus speed under full industrial temperature range (-40°C to +105°C) with VDD = 2.7–5.5 V. The MC9S08SH4CWJR delivers deterministic real-time performance suitable for time-critical control loops.
Does the MC9S08SH4CWJR support in-circuit debugging?
Yes, the MC9S08SH4CWJR includes a single-wire background debug (BKGD) interface compliant with Freescale's HCS08 debug standard. This allows full in-circuit programming, breakpoint setting (one hardware breakpoint plus two more via on-chip debug module), and real-time variable inspection without halting system clocks. The BKGD/MS pin serves dual purpose as debug interface and mode select, requiring no additional pins beyond the standard 24-QFN footprint. This capability is fully supported by CodeWarrior Development Studio and compatible third-party tools.
What analog peripherals are integrated into the MC9S08SH4CWJR?
The MC9S08SH4CWJR integrates a 12-channel, 10-bit successive-approximation ADC with 2.5 µs conversion time, internal temperature sensor, and selectable internal bandgap reference channel. It also includes a standalone analog comparator (ACMP) with interrupt capability on rising/falling/both edges, configurable reference selection (external or internal bandgap), and optional routing of output to TPM for hardware-triggered actions. Both ADC and ACMP remain functional in Stop3 mode, enabling low-power analog monitoring without waking the CPU.
Is the MC9S08SH4CWJR pin-compatible with other devices in the SH series?
Yes, the MC9S08SH4CWJR shares identical 24-pin QFN pinout (98ASA00474D) and signal mapping with MC9S08SH8CWJR and MC9S08SH8CLC, enabling drop-in replacement where memory requirements allow. All SH-series 24-QFN variants use the same port structure (PTA/PTB/PTC), peripheral pin multiplexing, and power/ground placement. However, differences in Flash/RAM size and certain configuration bits require firmware verification - the MC9S08SH4CWJR is not pin-compatible with 20-pin or 16-pin SH variants.
What power-saving modes does the MC9S08SH4CWJR support?
The MC9S08SH4CWJR supports four low-power modes: Wait (CPU halted, peripherals active), Stop2 (deep sleep with RAM retention), and Stop3 (deepest sleep with RTC and ADC operational). In Stop3 mode, current consumption drops below 1 µA while maintaining real-time wake-up capability via RTC alarm or external interrupt. The internal 1 kHz low-power oscillator continues running, allowing precise timekeeping and periodic sampling without external components - a key advantage for battery-powered MC9S08SH4CWJR deployments.
MC9S08SH4CWJR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Series:
- S08
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- S08
- Core Size:
- 8-Bit
- Speed:
- 40MHz
- Connectivity:
- I2C, LINbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 17
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S08SH4CWJR FAQ
1.How can I place an order for MC9S08SH4CWJR through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08SH4CWJR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC9S08SH4CWJR reliable?
The price and inventory of MC9S08SH4CWJR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08SH4CWJR is usually 5 days.
3.What payment methods are accepted for MC9S08SH4CWJR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08SH4CWJR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08SH4CWJR?
MC9S08SH4CWJR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08SH4CWJR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC9S08SH4CWJR?
For technical support, including MC9S08SH4CWJR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08SH4CWJR requirements.
6.How does Aetrix verify that MC9S08SH4CWJR is sourced from the original manufacturer or authorized distributors?
All MC9S08SH4CWJR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC9S08SH4CWJR meets industry standards.
7.What is the process for return or replacement of MC9S08SH4CWJR?
All MC9S08SH4CWJR units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08SH4CWJR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC9S08SH4CWJR part is unused and in its original packaging.
Return procedure for MC9S08SH4CWJR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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