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NXP Semiconductors MC9S08QL8CTG
- Part No.:
- MC9S08QL8CTG
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC9S08QL8CTG.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:420
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Product details
Overview
MC9S08QL8CTG from NXP Semiconductors is an 8-bit HCS08 microcontroller designed for ultra-low-power embedded control in space-constrained applications. It delivers up to 20 MHz CPU operation across 1.8–3.6 V and –40 °C to 85 °C, integrates 8 KB flash and 512 bytes RAM, and features a 12-bit ADC with temperature sensor for sensor interface and power management systems.
For engineers reviewing the MC9S08QL8CTG datasheet, MC9S08QL8CTG pinout, MC9S08QL8CTG application, or MC9S08QL8CTG equivalent, this page provides verified technical context, validated pin functions, confirmed low-power mode behavior (including 250 nA stop current), and real-world use cases in battery-powered industrial sensors and LIN-compliant automotive subsystems.
Technical Context
The MC9S08QL8CTG implements an HCS08 CPU core with BGND instruction support and handles up to 32 interrupt/reset sources. Its clock system combines a low-power external oscillator (31.25 kHz–16 MHz) and an internal FLL-based ICS with ±0.2% trimming resolution and 2% deviation over voltage/temperature.
System-level protection includes COP reset (with 1 kHz internal clock option), low-voltage detection with selectable trip points, illegal opcode/address detection, and flash block protection. Peripherals operate in stop3 mode: ADC (2.5 µs conversion), ACMP (bandgap-referenced), TPM (1-channel PWM), RTC (free-running 1 kHz LPO), and SCI with LIN master/slave break generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 with BGND instruction; supports up to 32 interrupt/reset sources |
| Max Bus Frequency | 10 MHz - determines maximum peripheral timing and instruction throughput |
| Flash / RAM | 8 KB flash (read/program/erase over full voltage/temp); 512 B RAM with security lock |
| ADC | 12-bit, 8-channel; 2.5 µs conversion time; includes 1.7 mV/°C temp sensor and bandgap reference |
| Low-Power Modes | Stop2 (250 nA @ 3 V, 25 °C), Stop3 (450 nA @ 3 V, 25 °C); 6 µs wakeup from Stop3 |
| Package | 20-pin TSSOP (Case 948E); 18 GPIOs including one input-only (PTA5) and one output-only (PTA4) |
| OSC Options | XOSC: 31.25 kHz–38.4 kHz or 1–16 MHz crystal/resonator; ICS: FLL-controlled, 1–10 MHz bus clock |
Pinout & Package
MC9S08QL8CTG is packaged in a 20-pin TSSOP (Case 948E), with 18 GPIOs, dedicated reset/interrupt (PTA5), background debug (PTA4/BKGD), and dual-purpose analog/digital pins supporting ADC, ACMP, TPM, and SCI functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA5 | Input-only / IRQ / RESET | Asynchronous interrupt input or hardware reset trigger; not configurable as GPIO output |
| PTA4 | Output-only / ACMPO / BKGD | Comparator output or single-wire background debug interface; no input capability |
| PTA0 | ADC0 / TPMCH0 / ACMP+ | Shared analog input, timer channel, and comparator positive input - requires functional mode selection |
| PTB5 | TPMCH0 (default) / EXTAL | Primary TPM channel 0 input; can be remapped to PTA0 via TPMCH0PS bit in SOPT2 register |
| PTB0–PTB3 | RxD/TxD/KBIPx/ADPx | SCI serial I/O and keyboard interrupt inputs with ADC channel multiplexing - software-configurable per pin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power stop modes | Stop3 draws only 450 nA @ 3 V, 25 °C and enables full peripheral retention with 6 µs wakeup - critical for battery life in intermittent-sensing nodes |
| FLL-based internal clock source | ICS achieves ±0.2% frequency resolution via factory/user trimming; maintains 1–10 MHz bus clock without external crystal |
| Integrated analog subsystem | 12-bit ADC + ACMP + bandgap reference + on-die temperature sensor enable self-calibrating sensor front-ends without external components |
| LIN-capable SCI module | Full-duplex NRZ SCI with extended break generation/detection meets LIN 2.1/2.2 physical layer requirements for automotive body electronics |
| Real-time counter with LPO | RTC runs continuously on 1 kHz internal low-power oscillator - enables precise task scheduling and cyclic wakeups without external timing components |
Applications
| Industrial Sensor Node | Automotive Body Control |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor node logging data every 5 minutes and transmitting via LIN bus. IC Role / Device Role / Timing Role: MC9S08QL8CTG acts as main controller, ADC acquisition engine, LIN protocol handler, and RTC scheduler. Use Value: Stop3 mode extends 10-year battery life; integrated bandgap reference ensures stable ADC accuracy across voltage drift; LIN SCI eliminates need for external transceiver. | Use Scenario: Door module managing window lift, mirror adjustment, and interior lighting with LIN communication to central ECU. IC Role / Device Role / Timing Role: MC9S08QL8CTG serves as LIN slave node controller, PWM driver for motor control, and KBI handler for switch inputs. Use Value: 1-channel TPM generates precise motor PWM; 8-pin KBI detects mechanical switch events with edge/level select; low-voltage detection prevents erratic behavior during battery sag. |
| Smart Meter Interface | Medical Wearable Monitor |
Use Scenario: Pulse-output interface between utility meter and wireless gateway, converting mechanical pulses to digital timestamps and event logs. IC Role / Device Role / Timing Role: MC9S08QL8CTG functions as pulse counter, RTC timestamp generator, and flash-based event logger. Use Value: RTC with free-running 1 kHz LPO ensures accurate time-stamping during mains outage; 8 KB flash stores >10,000 timestamped events; stop current <1 µA preserves backup coin cell. | Use Scenario: Disposable ECG patch sampling biopotential signals, detecting heart rate anomalies, and alerting via BLE companion device. IC Role / Device Role / Timing Role: MC9S08QL8CTG performs analog front-end conditioning, ADC sampling, real-time QRS detection, and BLE UART bridging. Use Value: 12-bit ADC with internal temp sensor enables on-chip calibration; ACMP provides fast analog threshold detection for R-wave triggering; low-power wait mode reduces average current to <10 µA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08QD4CTJ | 4 KB flash, 256 B RAM, 16-pin TSSOP, same peripherals and clock architecture | Lower memory footprint suits simpler control tasks; lacks GPIO count for multi-sensor interfaces | Select when cost-sensitive designs require reduced code size and fewer I/Os without sacrificing low-power operation or LIN capability |
| S9KEAZ128AMLH | Kinetis E-series ARM Cortex-M0+, 128 KB flash, 16 KB RAM, 48 MHz max, different architecture and toolchain | Higher performance and memory for firmware-upgradable devices; requires migration from HCS08 assembly/C | Choose for future-proofing where scalable processing, USB, or CAN are anticipated - not a drop-in replacement |
Compared with MC9S08QD4CTJ, the MC9S08QL8CTG offers double flash/RAM and two additional GPIOs for expanded sensor integration; versus S9KEAZ128AMLH, it provides proven ultra-low-power operation and legacy toolchain continuity at lower gate count and BOM cost.
Availability
MC9S08QL8CTG is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body control modules, smart meter interfaces, and medical wearable monitors requiring stable component supply and long-term lifecycle support.
Supply support for MC9S08QL8CTG 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 MC9S08QL8 series targets cost-sensitive, ultra-low-power embedded control in space-constrained environments - emphasizing energy efficiency, integrated analog, and LIN-ready communication for battery-operated and automotive subsystems.
FAQ
What is the maximum operating frequency of the MC9S08QL8CTG CPU core?
The MC9S08QL8CTG CPU core operates at up to 20 MHz across its full voltage range (1.8–3.6 V) and temperature range (–40 °C to 85 °C). However, the maximum supported bus frequency is 10 MHz, which governs peripheral timing and instruction execution speed. This distinction arises because the HCS08 core uses a two-cycle-per-instruction architecture, meaning the CPU clock runs at twice the bus clock frequency. The MC9S08QL8CTG datasheet confirms 10 MHz as the upper limit for reliable peripheral operation under all specified conditions.
Does the MC9S08QL8CTG support LIN 2.x communication natively?
Yes, the MC9S08QL8CTG supports LIN 2.1 and 2.2 physical layer requirements through its SCI module, which includes dedicated hardware for LIN master extended break generation and LIN slave extended break detection. The SCI operates in full-duplex NRZ mode and provides wakeup-on-active-edge functionality essential for low-power LIN slave nodes. No external transceiver is required for basic LIN point-to-point communication, though a level-shifting transceiver is needed for standard 12 V bus interfacing. This capability is explicitly documented in the MC9S08QL8CTG datasheet Section 4.10.1 and peripheral feature list.
What is the typical stop3 current consumption of the MC9S08QL8CTG at 3 V and 25 °C?
The typical stop3 current consumption of the MC9S08QL8CTG is 450 nA at 3 V and 25 °C, with a maximum of 800 nA under those conditions. This ultra-low current enables multi-year battery life in intermittently active applications such as wireless sensor nodes. The stop3 mode retains full RAM and register contents, allows wakeup via multiple sources (IRQ, KBI, RTC, ACMP), and keeps the 1 kHz low-power oscillator running for RTC functionality. These values are specified in Table 9 of the official MC9S08QL8CTG datasheet Rev. 1 (07/2018), under parameter S3IDD.
Can the MC9S08QL8CTG ADC operate while the MCU is in stop3 mode?
Yes, the MC9S08QL8CTG ADC is fully functional in stop3 mode, enabling low-power analog sensing without CPU intervention. The ADC supports automatic compare, conversion completion interrupts, and operation down to 1.8 V supply. Its 2.5 µs conversion time and integrated 1.7 mV/°C temperature sensor allow rapid, self-contained measurements during deep sleep. This capability is explicitly confirmed in the "Peripherals" section of the MC9S08QL8CTG datasheet and verified in electrical characteristics Table 4.12, where ADC parameters are specified for stop3 operation.
What package type and pin count does the MC9S08QL8CTG use?
The MC9S08QL8CTG uses a 20-pin TSSOP package (Case 948E), as confirmed by the ordering information table and mechanical drawings in the official MC9S08QL8CTG datasheet Rev. 1. It provides 18 GPIOs, including one input-only pin (PTA5/IRQ/RESET) and one output-only pin (PTA4/ACMPO/BKGD/MS). The 'CTG' suffix specifically denotes the 20-pin TSSOP variant; the related 'CTJ' suffix indicates the 16-pin TSSOP version, which has fewer I/Os and omits several peripheral pins.
MC9S08QL8CTG 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:
- 14
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S08QL8CTG FAQ
1.How can I place an order for MC9S08QL8CTG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08QL8CTG 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 MC9S08QL8CTG reliable?
The price and inventory of MC9S08QL8CTG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08QL8CTG is usually 5 days.
3.What payment methods are accepted for MC9S08QL8CTG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08QL8CTG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08QL8CTG?
MC9S08QL8CTG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08QL8CTG 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 MC9S08QL8CTG?
For technical support, including MC9S08QL8CTG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08QL8CTG requirements.
6.How does Aetrix verify that MC9S08QL8CTG is sourced from the original manufacturer or authorized distributors?
All MC9S08QL8CTG 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 MC9S08QL8CTG meets industry standards.
7.What is the process for return or replacement of MC9S08QL8CTG?
All MC9S08QL8CTG units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08QL8CTG, 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 MC9S08QL8CTG part is unused and in its original packaging.
Return procedure for MC9S08QL8CTG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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