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NXP Semiconductors MC9S08QB8CTG
- Part No.:
- MC9S08QB8CTG
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC9S08QB8CTG.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,765
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Product details
Overview
MC9S08QB8CTG from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller designed for ultra-low-power battery-operated systems. It features 8 KB flash, 512 bytes RAM, 8-channel 10-bit ADC (10-bit resolution in 16-pin TSSOP), 16-bit TPM, UART (SCI), analog comparator, 8-keyboard interrupt inputs, and operates down to 1.8 V at 20 MHz CPU speed.
For engineers reviewing the MC9S08QB8CTG datasheet, MC9S08QB8CTG pinout, MC9S08QB8CTG application, or MC9S08QB8CTG equivalent, key selection considerations include its 16-pin TSSOP package, 10-bit ADC resolution (vs. 12-bit in larger packages), ultra-low-power stop modes with 6 µs wake-up, clock gating, and compatibility with QE8 pinout for drop-in migration in space-constrained designs.
Technical Context
The MC9S08QB8CTG implements the HCS08 CPU core with backward object-code compatibility to 68HC08/68HC05, supporting bus speeds up to 10 MHz at 1.8–3.6 V. Its internal clock system includes an FLL-controlled ICS and an ultra-low-power OSC supporting 31.25 kHz–16 MHz crystals/resonators.
Peripherals are optimized for low-energy operation: the ADC functions in stop mode with internal bandgap reference and temperature sensor; the TPM supports input capture, output compare, and PWM with software-relocatable channel (default PTA0); the SCI provides full-duplex asynchronous communication with edge-triggered wake-up capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 8-bit core with BGND instruction and 68HC05/68HC08 object-code compatibility |
| Max CPU Speed | 20 MHz at 1.8–3.6 V, enabling high responsiveness in energy-constrained systems |
| Flash Memory | 8 KB on-chip flash with read/program/erase over full voltage/temperature range |
| RAM | 512 bytes with low-retention voltage support and security lock for code protection |
| ADC Resolution | 10-bit (8-channel) - confirmed for 16-pin TSSOP package per datasheet spec table |
| Operating Voltage | 1.8 V to 3.6 V - allows direct integration with single-cell Li-ion or two-cell alkaline batteries |
| Wake-up Time | 6 µs typical from stop mode - minimizes latency in event-driven sensing applications |
Pinout & Package
MC9S08QB8CTG is housed in a 16-pin Thin Shrink Small Outline Package (TSSOP) with 0.65 mm pitch, measuring 5.0 × 4.4 × 1.2 mm. This compact footprint supports high-density PCB layouts in portable and remote-control devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0 | TPM Channel 0 I/O | Default location for 16-bit timer/PWM; configurable as input capture, output compare, or PWM output |
| PTA1–PTA7 | GPIO / KBI Inputs | 8 keyboard interrupt-capable pins with selectable polarity; usable as general-purpose I/O |
| PTB0–PTB5 | GPIO / SCI / ACMP | Includes SCI TX/RX (PTB1/PTB0), analog comparator input (PTB2), and relocatable TPM channel option (PTB5) |
| VDD, VSS | Power Supply | Single 1.8–3.6 V supply rail; no separate analog/digital rails required |
| XTAL/EXTAL | Oscillator Interface | Supports 31.25 kHz–16 MHz crystal or ceramic resonator; ultra-low-power OSC enables accurate timing in stop mode |
Key Features
| Feature | Design Value |
|---|---|
| Two ultra-low-power stop modes | One permits limited peripheral operation (e.g., ADC sampling) while drawing sub-µA current |
| 6 µs wake-up from stop | Enables rapid response to external events without sacrificing energy efficiency |
| Software-relocatable TPM channel | Allows TPM functionality to be assigned to PTA0 or PTB5 - increases layout flexibility in pin-limited designs |
| On-chip analog comparator with internal reference | Eliminates need for external reference IC; output can trigger TPM input capture for zero-latency edge detection |
| Flash block protection | Prevents accidental overwrite of bootloader or critical firmware during field updates |
Applications
| Garage Door Openers | Smoke Detectors |
|---|---|
Use Scenario: Wireless remote control unit with motion-triggered transmission and battery life >2 years. IC Role / Device Role / Timing Role: Main controller managing RF link, button scan, low-power wake-up, and secure command encoding. Use Value: 6 µs wake-up and stop-mode ADC allow periodic environmental sampling without draining coin-cell power. | Use Scenario: Standalone photoelectric smoke alarm powered by 9 V alkaline battery with 10-year shelf life. IC Role / Device Role / Timing Role: System supervisor performing self-test, CO/obscuration sensing via ADC, audible alarm generation, and low-voltage warning. Use Value: 1.8 V operation and ultra-low-power stop modes extend battery service life beyond regulatory requirements. |
| Remote Window Shutters | Low-Power Toys & Games |
Use Scenario: Battery-powered motorized shutter controller receiving encrypted RF commands and driving bidirectional DC motor. IC Role / Device Role / Timing Role: Motor sequencer and RF interface manager with real-time counter for timeout enforcement and watchdog supervision. Use Value: Integrated TPM PWM and keyboard interrupts enable precise motor control and tactile button handling using only 16 pins. | Use Scenario: Handheld interactive game with LED feedback, sound, and push-button interface running on two AA cells. IC Role / Device Role / Timing Role: Central logic engine executing game state, scanning buttons (KBI), driving LEDs via GPIO, and generating tones via TPM PWM. Use Value: 8 KB flash accommodates firmware with audio tables and animation logic; 512-byte RAM retains game state during brief sleep intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08QE8CTG | Same 16-pin TSSOP package, pin-compatible, but offers 12-bit ADC and additional peripherals (e.g., SPI) | Preferred where higher ADC precision or serial interface is required; consumes slightly more active current | Select MC9S08QE8CTG when 12-bit ADC or SPI is needed; MC9S08QB8CTG remains optimal for cost- and power-sensitive 10-bit ADC use cases |
| EFM8SB10F8G-A-QSOP16 | Silicon Labs EFM8 Sleepy Bee: 8051 core, 8 KB flash, 512 B RAM, 12-bit ADC, deep-sleep current < 50 nA (vs. QB8's ~1 µA) | Better suited for multi-year battery life in infrequent-wake applications; lacks HCS08 toolchain continuity | Choose EFM8SB10F8G-A-QSOP16 for lowest possible sleep current; retain MC9S08QB8CTG when leveraging existing CodeWarrior/HCS08 ecosystem and QE8 pinout compatibility |
Compared with MC9S08QE8CTG and EFM8SB10F8G-A-QSOP16, the MC9S08QB8CTG delivers the best balance of ultra-low-power operation, proven HCS08 software reuse, and pinout compatibility with legacy QE designs - making it ideal for cost-sensitive, battery-life-critical replacements where 10-bit ADC resolution suffices.
Availability
MC9S08QB8CTG is available at Aetrix Electronics and suitable for battery-powered remote controls, residential safety devices, and portable consumer electronics requiring stable component supply and long-term lifecycle support.
Supply support for MC9S08QB8CTG 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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.
The MC9S08QB8CTG belongs to NXP's S08 QB family - engineered specifically for extreme energy efficiency in space-constrained, battery-operated systems such as remote sensors, safety alarms, and wireless controllers.
FAQ
What is the ADC resolution of the MC9S08QB8CTG?
The MC9S08QB8CTG features an 8-channel, 10-bit analog-to-digital converter. This resolution is specified for the 16-pin TSSOP package variant (including MC9S08QB8CTG), differing from the 12-bit ADC offered in 24- and 28-pin QB8 variants. The 10-bit ADC supports internal bandgap reference, temperature sensor input, and operation in low-power stop mode - enabling accurate sensing without external components.
Is the MC9S08QB8CTG pin-compatible with other S08 devices?
Yes, the MC9S08QB8CTG is pin-compatible with the MC9S08QE8CTG in the same 16-pin TSSOP package. Both share identical pin assignments for power, reset, oscillator, GPIO, and peripheral signals. This allows direct hardware replacement in existing QE8-based designs, simplifying migration while retaining PCB layout and firmware compatibility for core functionality.
What low-power modes does the MC9S08QB8CTG support?
The MC9S08QB8CTG supports two ultra-low-power stop modes, plus low-power run and wait modes. One stop mode permits limited peripheral operation (e.g., ADC conversions), while both offer 6 µs typical wake-up time. Clock gating disables unused peripheral clocks, and the ultra-low-power oscillator maintains accurate timing during stop - collectively enabling sub-microamp quiescent current in battery-critical applications.
Does the MC9S08QB8CTG include a hardware UART?
Yes, the MC9S08QB8CTG integrates a Serial Communications Interface (SCI) module that implements full-duplex asynchronous UART functionality. It supports flexible baud rate generation, 13-bit break detection, double-buffered transmit/receive, and optional hardware parity. The SCI can generate interrupts on RX/TX activity or edge transitions - enabling reliable host communication and wake-up from low-power states.
What development tools are supported for the MC9S08QB8CTG?
The MC9S08QB8CTG is supported by Freescale/NXP's CodeWarrior Development Studio for Microcontrollers (v6.2 Special Edition), including Processor Expert rapid development tools. Hardware options include the DEMO9S08QB8 evaluation kit ($69) - featuring the QB8 daughter card on a reusable QE base board - and the DC9S08QB8 daughter card ($10) for use with existing DEMOQE platforms.
MC9S08QB8CTG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Series:
- S08
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- S08
- Core Size:
- 8-Bit
- Speed:
- 20MHz
- Connectivity:
- LINbus, SCI
- Peripherals:
- LVD, PWM, WDT
- Number of I/O:
- 12
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S08QB8CTG FAQ
1.How can I place an order for MC9S08QB8CTG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08QB8CTG 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 MC9S08QB8CTG reliable?
The price and inventory of MC9S08QB8CTG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08QB8CTG is usually 5 days.
3.What payment methods are accepted for MC9S08QB8CTG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08QB8CTG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08QB8CTG?
MC9S08QB8CTG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08QB8CTG 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 MC9S08QB8CTG?
For technical support, including MC9S08QB8CTG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08QB8CTG requirements.
6.How does Aetrix verify that MC9S08QB8CTG is sourced from the original manufacturer or authorized distributors?
All MC9S08QB8CTG 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 MC9S08QB8CTG meets industry standards.
7.What is the process for return or replacement of MC9S08QB8CTG?
All MC9S08QB8CTG units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08QB8CTG, 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 MC9S08QB8CTG part is unused and in its original packaging.
Return procedure for MC9S08QB8CTG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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