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NXP Semiconductors MC9S08SH8CWJR
- Part No.:
- MC9S08SH8CWJR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MC9S08SH8CWJR.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,418
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Product details
Overview
MC9S08SH8CWJR from Freescale Semiconductor is an 8-bit HCS08 microcontroller featuring a 40-MHz CPU, 8 KB on-chip FLASH memory, and 512 B RAM. It integrates ADC (12-channel, 10-bit), dual TPM modules, SCI, SPI, I²C, RTC, and analog comparator - all operating in Stop3 mode. Designed for low-power embedded control in automotive body electronics and industrial sensors.
For engineers reviewing the MC9S08SH8CWJR datasheet, MC9S08SH8CWJR pinout, MC9S08SH8CWJR application, or MC9S08SH8CWJR equivalent, key selection criteria include its 24-QFN package with exposed pad, internal clock source (ICS) supporting 2–20 MHz bus frequency, stop-mode current as low as 1.0 µA, and single-wire background debug interface compatibility.
Technical Context
The MC9S08SH8CWJR implements the HCS08 CPU core with HC08 instruction set extension including BGND, supporting up to 32 interrupt/reset sources. Its Internal Clock Source (ICS) uses a frequency-locked loop (FLL) with precision-trimmed internal reference (0.2% resolution, ±2% deviation over voltage/temperature).
Peripherals include two 2-channel Timer Pulse-Width Modulators (TPM1/TPM2) with input capture, output compare, and edge-/center-aligned PWM; a 10-bit ADC with 2.5 µs conversion time and integrated temperature sensor; and real-time counter (RTC) with free-running 1 kHz low-power oscillator enabling cyclic wake-up in all power modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 8-bit core, 40-MHz max operation - enables deterministic real-time control at sub-microsecond instruction latency. |
| FLASH / RAM | 8 KB FLASH (read/program/erase over full VDD/temp), 512 B RAM - supports field firmware updates without external memory. |
| ADC | 12-channel, 10-bit, 2.5 µs conversion - sufficient for motor current sensing or battery voltage monitoring with integrated bandgap reference. |
| Power Modes | Stop3 mode draws ≤1.0 µA (VDD = 3.3 V, -40°C to 105°C) - enables multi-year battery life in wireless sensor nodes. |
| Clock Sources | ICS with FLL (2–20 MHz bus), XOSC (31.25 kHz–16 MHz crystal/resonator) - eliminates need for external clock generator in cost-sensitive designs. |
| Debug Interface | Single-wire background debug (BDM) - allows in-circuit programming and breakpoint debugging using minimal PCB footprint. |
| Operating Range | -40°C to 105°C, 2.7–5.5 V supply - qualified for under-hood automotive and industrial ambient environments. |
Pinout & Package
MC9S08SH8CWJR is housed in a 24-pin QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad (package code: 98ASA00474D per Freescale QFN Addendum Rev. 0, 07/2014). The exposed pad must be soldered to PCB ground plane for thermal and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; required for EMI robustness in noisy environments. |
| XTAL, EXTAL | Crytal/resonator connection | Supports Pierce oscillator configuration for precise timing; optional bypass for internal ICS-only operation. |
| RESET | Active-low reset input | Accepts external reset signal or internal LVD/COP reset assertion; internal pull-up enables standalone reset functionality. |
| BKGD/MS | Background debug / mode select | Single-wire BDM communication channel; also selects active background mode during reset sequence. |
| PTA0–PTA7 | Port A general-purpose I/O | 8-bit port with configurable pull-up, slew rate, and drive strength; PTA0–PTA3 support pin-interrupt with edge/level sensitivity. |
| PTB0–PTB7 | Port B general-purpose I/O | Ganged output capability on PTB[5:2]; all pins support hysteresis and interrupt-on-change for wake-from-stop detection. |
| PTC0–PTC3 | Port C general-purpose I/O | Ganged output on PTC[3:0]; PTC0–PTC2 multiplexed with ADC channels and TPM inputs. |
| VREFH/VREFL | ADC reference voltage terminals | Allow external high-precision reference or internal bandgap (1.2 V) selection - critical for accurate sensor measurement. |
Key Features
| Feature | Design Value |
|---|---|
| Stop3 Mode Operation | Full peripheral retention (ADC, ACMP, RTC, TPM) with 1.0 µA typical current - enables ultra-low-power periodic sensing without external wake controller. |
| Internal Clock Source (ICS) | FLL-stabilized internal reference trimmed to 0.2% resolution - eliminates crystal cost and board space while maintaining 2% frequency accuracy across temp/voltage. |
| Real-Time Counter (RTC) | Free-running 1 kHz low-power oscillator powers RTC in all modes - provides calendar/time-of-day functions without external 32.768 kHz crystal. |
| Analog Comparator (ACMP) | Interrupt-capable comparator with internal bandgap reference and TPM routing - enables zero-crossing detection or battery undervoltage alert without CPU intervention. |
| FLASH Block Protection | Configurable protection of FLASH sectors via FOPT/NVOPT registers - prevents accidental overwrite of bootloader or calibration data in production firmware. |
Applications
| Automotive Door Module | Industrial Temperature Sensor Node |
|---|---|
Use Scenario: Central control unit managing power windows, locks, mirrors, and interior lighting in vehicle door assemblies. IC Role / Device Role / Timing Role: Primary MCU executing CAN/LIN gateway logic, PWM motor control, and ADC-based switch debouncing. Use Value: Stop3 mode enables <1.5 µA sleep current between LIN wake events; integrated RTC schedules periodic self-test without external timer IC. |
Use Scenario: Battery-powered wireless node measuring ambient temperature and humidity in factory HVAC zones. IC Role / Device Role / Timing Role: Sensor fusion processor acquiring data via onboard ADC and I²C sensors, then transmitting via SPI-connected RF transceiver. Use Value: Internal 1.2 V bandgap reference ensures consistent ADC accuracy across 2.7–5.5 V battery discharge; ganged I/O reduces GPIO count for compact PCB layout. |
| Smart Lighting Dimmer | Appliance Motor Control |
Use Scenario: DALI-compatible LED driver with programmable dimming curves and thermal foldback protection. IC Role / Device Role / Timing Role: System controller managing AC phase-cut dimming via TPM PWM outputs and thermal monitoring via ADC-integrated temperature sensor. Use Value: 2.5 µs ADC conversion enables real-time current sampling for closed-loop current regulation; ACMP output routed to TPM allows hardware-triggered fault shutdown. |
Use Scenario: Brushless DC motor commutation in cordless power tools with overcurrent and stall detection. IC Role / Device Role / Timing Role: Real-time motor controller executing six-step commutation using TPM-generated hall-effect timing and ADC-sampled phase currents. Use Value: Dual TPM modules provide independent 3-phase PWM generation and input capture for hall sensor edges; 40-MHz CPU delivers <2 µs interrupt latency for fast fault response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08AC16CFGE | 16 KB FLASH, 1 KB RAM, 48-QFN package - larger memory and more I/O but no RTC or ACMP; requires external crystal for full-speed operation. | Targeted at higher-complexity control tasks (e.g., multi-zone HVAC) where extended FLASH and additional timers outweigh RTC omission. | Select when firmware size exceeds 8 KB or when >17 GPIOs are required; avoid if RTC or ultra-low-power Stop3 is mandatory. |
| S9KEAZ128AMLH | Kinetis E-series ARM Cortex-M0+, 128 KB FLASH, 16 KB RAM, 64-LQFP - higher performance, modern toolchain, but 3.5 mA active current vs. 1.2 mA for MC9S08SH8CWJR. | Used in next-generation designs requiring USB, CAN FD, or advanced security; not drop-in compatible due to architecture and pinout differences. | Choose for new designs needing scalability beyond 8-bit constraints; retain MC9S08SH8CWJR for legacy cost/power-optimized replacements. |
Compared with MC9S08AC16CFGE and S9KEAZ128AMLH, the MC9S08SH8CWJR uniquely balances ultra-low-power Stop3 operation (1.0 µA), integrated RTC with internal 1 kHz oscillator, and compact 24-QFN footprint - making it optimal for space-constrained, battery-operated control nodes where 8-bit performance suffices.
Availability
MC9S08SH8CWJR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart lighting dimmers, and appliance motor controllers requiring stable component supply and long-term lifecycle support.
Supply support for MC9S08SH8CWJR 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 MC9S08SH8CWJR belongs to the HCS08 microcontroller family, engineered for cost-sensitive, low-power embedded control applications demanding high reliability, integrated peripherals, and robust debug capability in harsh environments.
FAQ
What is the maximum operating frequency of the MC9S08SH8CWJR?
The MC9S08SH8CWJR features a 40-MHz HCS08 CPU core. Its maximum bus frequency is 20 MHz when using the internal clock source (ICS) with FLL enabled, or up to 40 MHz when driven by an external crystal/resonator through the XOSC module. This allows deterministic real-time execution for time-critical control loops in motor or power applications.
Does the MC9S08SH8CWJR support in-circuit debugging?
Yes, the MC9S08SH8CWJR includes a single-wire background debug (BDM) interface compliant with Freescale's BDM specification. This enables full in-circuit programming, real-time register inspection, and breakpoint debugging without requiring dedicated debug pins - only the BKGD/MS pin is needed, minimizing PCB routing overhead.
What power-saving modes does the MC9S08SH8CWJR offer?
The MC9S08SH8CWJR supports three low-power modes: Wait (reduced current with clocks active), Stop2 (deep sleep with partial peripheral disable), and Stop3 (deepest sleep with RTC, ADC, ACMP, and TPM retained). In Stop3 mode, typical current consumption is 1.0 µA at 3.3 V and 25°C - ideal for battery-powered wake-on-event applications.
Can the MC9S08SH8CWJR operate without an external crystal?
Yes, the MC9S08SH8CWJR can operate entirely from its internal clock source (ICS), which uses a frequency-locked loop (FLL) and precision-trimmed internal reference. This eliminates the need for an external crystal or resonator, reducing BOM cost and PCB area - while still delivering ±2% frequency accuracy across temperature and voltage ranges.
Is the MC9S08SH8CWJR pin-compatible with other SH8 variants?
The MC9S08SH8CWJR shares the same 24-QFN package (98ASA00474D) and pinout with MC9S08SH4CWJR and MC9S08SH8CLJ (SOIC variant differs). However, functional differences exist: MC9S08SH4CWJR has only 4 KB FLASH and no RTC, so firmware and peripheral initialization must be verified before substitution.
MC9S08SH8CWJR 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:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 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:
MC9S08SH8CWJR FAQ
1.How can I place an order for MC9S08SH8CWJR through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08SH8CWJR 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 MC9S08SH8CWJR reliable?
The price and inventory of MC9S08SH8CWJR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08SH8CWJR is usually 5 days.
3.What payment methods are accepted for MC9S08SH8CWJR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08SH8CWJR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08SH8CWJR?
MC9S08SH8CWJR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08SH8CWJR 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 MC9S08SH8CWJR?
For technical support, including MC9S08SH8CWJR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08SH8CWJR requirements.
6.How does Aetrix verify that MC9S08SH8CWJR is sourced from the original manufacturer or authorized distributors?
All MC9S08SH8CWJR 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 MC9S08SH8CWJR meets industry standards.
7.What is the process for return or replacement of MC9S08SH8CWJR?
All MC9S08SH8CWJR units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08SH8CWJR, 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 MC9S08SH8CWJR part is unused and in its original packaging.
Return procedure for MC9S08SH8CWJR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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