MC9S08LL16CGT - 8-Bit 20MHz 16KB MCU | NXP 48-QFN
MPN: MC9S08LL16CGT ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.1646 | $1.16 |
| 10 | $1.1646 | $11.65 |
| 100 | $1.1646 | $116.46 |
| 500 | $1.1646 | $582.30 |
| 1,000 | $1.1646 | $1,164.60 |
MC9S08LL16CGT Overview
A microcontroller is a programmable semiconductor that combines a CPU, memory, and peripherals on one integrated circuit. In the embedded-system hierarchy, the MC9S08LL16CGT belongs to the 8-bit microcontroller class and uses the HCS08 S08 core. Its combination of Flash program memory, RAM, communication peripherals, timing resources, and low-power features makes it suitable for applications where a higher-performance processor would add unnecessary cost or complexity.
The verified product listing identifies the device as an 8-bit, 20 MHz MCU with 16 KB organized as 16K x 8 Flash and 2 KB RAM. The S08LL family is positioned for battery-powered equipment such as medical diagnostics and handheld appliances. Its 48-QFN exposed-pad package supports compact PCB placement while exposing a thermal and electrical connection area beneath the package; layout still requires exact compliance with the manufacturer land pattern and exposed-pad requirements.
Typical designs use the MCU to supervise sensors, drive a segment LCD, scan input keys, manage a small motor or actuator, and communicate measurements through serial peripherals. The 20 MHz clock capability provides useful processing headroom for state-machine control and foreground routines. Firmware should nevertheless be organized to avoid unnecessary busy-waiting and should use the MCU's low-power modes when the product spends substantial time idle.
Engineering attention belongs on decoupling, clock stability, exposed-pad layout, and firmware-compatible peripheral configuration. Place the required bypass capacitors close to the supply pins, follow the datasheet's recommended PCB stack-up and exposed-pad geometry, and verify programming and debug access before releasing a layout. Because the NXP product page identifies the device as End of Life, new production designs should also confirm availability and migration planning with the manufacturer.
This page combines verified distributor specifications, manufacturer documentation, lifecycle information, and practical design guidance. It distinguishes verified facts from parameters that were not supplied, helping engineers assess fit without treating generic cross-reference results as guaranteed drop-in replacements.
Drop-in alternatives for MC9S08LL16CGT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MC9S08LL16CGT (same form factor and footprint) — differing in Package, Flash Memory, Core Processor, Lifecycle Status, CPU Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08PA8VTJ
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08SH8MTJ
✅ Drop-In✓ In Stock
$4.79 / Unit
View Datasheet →MC9S08GT16ACFDE
✅ Drop-In✓ In Stock
$9.3 / Unit
View Datasheet →MC9S08QE16CFT
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08GT16AMFDE
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC9S08LL16CGT Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit microcontroller (MCU) |
| Processor Series | S08LL |
| CPU Core | HCS08 S08 8-bit core |
| Maximum Clock Frequency | 20 MHz |
| Flash Memory | 16 KB (16K x 8) |
| RAM | 2 KB |
| Data Bus Width | 8 bit |
| Package | 48-QFN exposed-pad, 7 x 7 mm |
| Pin Count | 48 pins |
| Mounting Type | Surface mount |
| Temperature Grade | Industrial |
| Terminal Form | No lead |
| Package Shape | Square |
| Package Code | HVQCCN |
| Core Instruction Set | HC08 instruction set |
| Minimum CPU Supply | 1.8 V |
| Nominal Supply Levels | 2.5 V or 3.3 V |
| Segment LCD Orientation | Segment LCD applications |
MC9S08LL16CGT hvqccn Pin Configuration Guide
Pin configuration for MC9S08LL16CGT (hvqccn package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MC9S08LL16CGT.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S08LL16CGT is suitable for 6 applications: Battery-Powered Medical Diagnostic, Handheld Appliance Controller, Segment-LCD Meter, Low-Power Sensor Node, Small Motor or Actuator Control, Battery Charger and Power Control.
Battery-Powered Medical Diagnostic
The MC9S08LL16CGT fits compact battery-powered diagnostic equipment because its S08LL family is specifically identified for applications such as medical diagnostics, while the 20 MHz CPU provides control headroom for sensor acquisition, calibration, display updates, and user-interface state machines. Its 16 KB Flash supports embedded firmware and 2 KB RAM supports short working buffers without requiring a larger processor. Use the MCU to supervise a sensor front end, scan controls, update a segment display, and enter low-power states between measurements. The engineering tradeoff is the device's End of Life status, so medical-product programs should secure supply and qualify a migration path before production.
Recommended
Handheld Appliance Controller
The MC9S08LL16CGT is appropriate for a handheld appliance that combines a small display, buttons, a simple actuator, and battery monitoring. The 8-bit architecture is economically suited to fixed control tasks, while 20 MHz operation allows responsive debouncing, timing, and peripheral coordination. Its 16 KB Flash provides room for application logic and configuration data, and the 2 KB RAM supports temporary state. The MCU can manage a low-power duty cycle by sleeping during idle periods and waking for user input or scheduled measurement. Designers should verify LCD segment mapping, supply voltage limits, and the exposed-pad footprint in the manufacturer data sheet.
Recommended
Segment-LCD Meter
The MC9S08LL16CGT suits a segment-LCD meter because the S08LL family is designed around low-power embedded control and the verified device combines an 8-bit CPU with 16 KB Flash. It can scan display segments, perform button debouncing, convert measurements, apply calibration, and drive indicator outputs. The 20 MHz clock provides enough execution capability for regular display refresh and measurement routines, while 2 KB RAM can hold display buffers and temporary values. Engineers should check the exact LCD pin allocation and electrical timing in the manufacturer documentation before routing the PCB. The compact QFN also helps reduce board area, but the exposed pad needs careful thermal and layout treatment.
Recommended
Low-Power Sensor Node
The MC9S08LL16CGT can be used as the local controller for a low-power sensor node when the design requires local acquisition, threshold decisions, status indication, and periodic communication. The S08 core handles fixed control tasks efficiently, and the 20 MHz operating rate leaves headroom for sensor sampling routines and short protocol frames. The 2 KB RAM is useful for a sampled value, status flags, and a transmit or display buffer, while 16 KB Flash holds application firmware. Duty-cycled operation is essential for battery life: keep the CPU active only during sampling and communication, and confirm oscillator, wake, and supply specifications from the official data sheet.
Recommended
Small Motor or Actuator Control
The MC9S08LL16CGT is suitable for a small actuator controller when the system needs deterministic sequencing, limit-state management, and user-interface coordination rather than high-performance motion control. Its 20 MHz 8-bit core can execute state-machine timing and control peripheral sequences, while 16 KB Flash stores application logic and 2 KB RAM holds command and status variables. The controller can monitor switches, drive a display, and command a motor or solenoid through external circuitry. Actual motor voltage, current, transient protection, and timing requirements are application-specific and must be checked against the electrical limits in the manufacturer data sheet.
Recommended
Battery Charger and Power Control
The MC9S08LL16CGT can act as the supervisory controller in a small charger or power-management product, handling button input, status LEDs or an LCD, timing, fault flags, and controlled sequencing of external switching stages. Its 8-bit architecture is economical for a fixed supervisory task, and 16 KB Flash permits structured firmware for calibration, state transitions, and diagnostics. The controller should operate from a verified supply range and use external sensing and protection components for battery current and voltage. Because the MCU is not a power-conversion device, the design team must independently verify regulator ratings, switching-node isolation, thermal conditions, and all safety-related shutdown behavior.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08LL16CGT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08PA8VTJ | MC9S08SH8MTJ | MC9S08GT16ACFDE | MC9S08QE16CFT | MC9S08GT16AMFDE |
|---|---|---|---|---|---|---|
| Package | 48-QFN exposed-pad, 7 x 7 mm | Related package; exact footprint compatibility requires verification | Related package; exact footprint compatibility requires verification | Related 48-QFN exposed-pad package reference | Related package; exact footprint compatibility requires verification | 48-QFN exposed-pad package reference |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HCS08 S08 8-bit core | Related S08 MCU; exact core details not supplied | Related S08 MCU; exact core details not supplied | S08 family device | S08 family device | S08 family device |
| Data Bus Width | 8 bit | 8-bit related MCU | 8-bit related MCU | 8-bit S08 MCU | 8-bit S08 MCU | 8-bit S08 MCU |
Key Differentiators
- Documented 20 MHz S08 performance target (vs MC9S08PA8VTJ)
- Verified 16 KB Flash and 2 KB RAM configuration (vs MC9S08GT16ACFDE)
- Explicit manufacturer End of Life status (vs MC9S08SH8MTJ)
Design Notes
Treat the exposed pad as both a thermal connection and a package-layout feature. Use the exact NXP land pattern, solder-mask opening, and paste recommendation from the official data sheet rather than deriving them from the nominal 7 x 7 mm body size. Check the pad's electrical assignment before connecting it to ground, supply, or a thermal structure; a mechanically similar pad is not proof of pin-compatible interchangeability.
Place the required bypass capacitors adjacent to the device supply pins and keep their return paths short. The verified data references a 1.8 V minimum CPU supply and nominal 2.5 V or 3.3 V operation, but complete absolute maximum, DC, and current limits must come from the manufacturer data sheet. Confirm regulator stability, startup sequencing, and decoupling capacitance for the actual clock and peripheral configuration.
Do not treat a related S08 MCU as a drop-in replacement based only on similar speed, Flash capacity, or a comparison-site statement. Validate every pin name and direction, the exposed-pad connection, reset and oscillator behavior, LCD mapping, memory map, peripheral register compatibility, and firmware startup code. The supplied cross-reference data does not establish complete pin compatibility for the listed candidates.
Estimate junction temperature using the actual dissipation and the manufacturer-provided thermal parameters rather than assuming the exposed pad alone guarantees cooling. The supplied search data does not provide verified junction-to-ambient resistance, maximum power, or ambient-temperature limits for this exact part, so those values are [DATA_NEEDED]. Use copper area, thermal vias, and enclosure airflow as design variables, then validate with measured temperature in the final assembly.
Compliance Information
The supplied search results do not provide verified compliance declarations for RoHS, REACH, AEC-Q100, lead-free status, halogen-free status, or conflict minerals. The NXP page identifies the product as End of Life, but that status is not itself a compliance certification.
