MC9S08PL4CTG - 8-bit S08 MCU, 4KB Flash, 20MHz | NXP
N.º de pieza: MC9S08PL4CTG ✓ ActivoMC9S08PL4CTG Descripción general
A microcontroller is a programmable system-on-chip that integrates a CPU core, non-volatile program memory, data memory, and peripherals such as analog converters, timers, and communication interfaces onto one die. The S08 family from NXP is a cost-oriented 8-bit architecture built around a simple, highly deterministic instruction set, an on-chip bus with programmable clock prescalers, and a rich interrupt controller, which maps into the broader hierarchy of embedded processor, microcontroller, and semiconductor product categories.
Key features of the MC9S08PL4CTG include on-chip EEPROM for parameter storage, a 10-bit analog-to-digital converter, an analog comparator, flexible timer modules for periodic and PWM generation, and support for up to 40 interrupt and reset sources with four levels of nested interrupt handling. The 20 MHz bus speed gives adequate headroom for protocol handling, sensor sampling, and simple motor or relay control, while the low-power design targets portable and industrial-control applications.
Architecturally, the device separates an 8-bit S08 central processor unit with a 16-bit timer capability from dedicated peripheral subsystems. The on-chip EEPROM removes the need for an external non-volatile memory device for calibration data or serial numbers, while the 10-bit ADC with analog comparator supports direct sensing of thermistors, potentiometers, and battery rails without external signal conditioning.
Typical applications include low-cost consumer remote controls, small appliance controllers, battery-operated sensors, motor and valve control modules, LED driver boards, and compact industrial sensing nodes where a 16-pin footprint and 5 V or 3.3 V operation are hard requirements.
A key design consideration is that the S08PL family is a small-memory platform: 4 KB of flash limits application code size, so time-critical or code-heavy designs should be evaluated against the larger MC9S08QE family in the same 16-TSSOP footprint. Budget for external flash only if the pin count allows it.
This page consolidates manufacturer specifications, package and pinout references, drop-in alternatives in the same footprint, and practical layout and firmware guidance that are not gathered in a single place in the original MC9S08PL4 series datasheet.
Alternativas directas para MC9S08PL4CTG — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MC9S08PL4CTG (mismo factor de forma y huella) — difiere en Package.
MC9S08QE4CTG
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →MC9S08QE8CTG
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →MC9S08QE2CTG
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
MC9S08PL2CTG
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
MC9S08PL1CTG
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
MC9S08PL4CTG Valores máximos y características eléctricas
| Device Type | 8-bit S08 Microcontroller (MCU) |
| CPU Core | 8-bit S08 central processor unit |
| Maximum Bus Frequency | 20 MHz |
| Flash Program Memory | 4 KB (4K x 8) |
| EEPROM | On-chip EEPROM |
| RAM | 512 bytes |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Rango de temperatura de funcionamiento | -40 °C to +85 °C |
| ADC | 10-bit analog-to-digital converter |
| Analog Comparator | On-chip analog comparator |
| Timers | Flexible timer modules (periodic and PWM) |
| Interrupt Sources | Up to 40 interrupt/reset sources |
| Nested Interrupt Levels | Up to 4 levels |
| Encapsulado | 16-pin TSSOP |
| Tipo de montaje | Surface Mount |
| Shipping Format | Tube |
Guía de configuración de pines de MC9S08PL4CTG 16-pin tssop
Configuración de pines para MC9S08PL4CTG (encapsulado 16-pin tssop). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para MC9S08PL4CTG.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
MC9S08PL4CTG es adecuado para 6 aplicacións: Battery-Powered Portable Consumer Devices, Industrial Sensing and Measurement Nodes, Small Appliance and Kitchenware Controllers, LED Lighting and Signage Control, Motor, Valve and Relay Drive Modules, Programmable Logic Controller (PLC) and IoT Sensor Hubs.
Battery-Powered Portable Consumer Devices
The MC9S08PL4CTG suits compact, battery-fed consumer products such as remote controls, personal-care accessories and small handheld appliances. Its 8-bit S08 core, 2.7 V to 5.5 V supply range and on-chip EEPROM let a single cell-derived 3 V rail drive the whole design, while the on-chip 10-bit ADC can monitor a battery or a sensor element directly. The trade-off is memory: 4 KB of flash holds a modest application, so keep code compact and use the EEPROM for calibration or pairings rather than buffering large data sets in the 512 bytes of RAM.
Recomendado
Industrial Sensing and Measurement Nodes
For compact industrial sensing modules, the MC9S08PL4CTG combines a 10-bit ADC, an analog comparator and flexible timer modules in a 16-pin TSSOP, which removes the need for external analog conditioning and discrete timer ICs. The -40 °C to +85 °C operating range supports factory-floor and outdoor enclosure temperatures, and 2.7 V to 5.5 V operation allows a single regulated rail to power the whole node. Use the comparator for threshold detection on slow-moving analog signals and the timers for periodic sampling, and keep the interrupt handler short so the 512-byte RAM budget is not exhausted by a deep call stack.
Recomendado
Small Appliance and Kitchenware Controllers
The MC9S08PL4CTG is a natural fit for small appliance controllers where the control logic is simple but reliability matters, such as a kettle, toaster, mixer or coffee machine interface. Timers handle motor or heater sequencing, the analog comparator detects pot or probe thresholds, and the 10-bit ADC tracks temperature. The 4 KB flash limit means UI state machines must be compact, so encode discrete functions as a table rather than sprawling branch logic. Because the supply range reaches 5.5 V, the part can sit directly behind a rectified mains-derived 5 V rail without a dedicated 3.3 V regulator.
Recomendado
LED Lighting and Signage Control
The MC9S08PL4CTG drives LED strips, signage modules and simple architectural lighting controllers using its flexible timer modules for PWM generation. At a 20 MHz bus speed, the timers can generate several PWM channels and service display-refresh routines simultaneously, and the EEPROM retains brightness tables, colour settings or fade profiles across power cycles. A major design consideration is that PWM resolution and update rate depend on the timer clock derived from the internal oscillator, so validate timing against the actual application rather than relying on nominal figures, and use the ADC to compensate for LED forward-voltage drift.
Recomendado
Motor, Valve and Relay Drive Modules
The MC9S08PL4CTG suits compact actuator modules where a small MCU must sequence a motor, solenoid or relay and report status. Timers provide the pulse-width modulation or step-rate timing, the analog comparator can implement a simple endstop or current-sense threshold, and the 4 KB flash is usually sufficient for a short motion routine plus a state machine. Drive currents should stay outside the MCU pins: use a transistor or MOSFET driver and a flyback diode for inductive loads, and keep switching current and ground bounce off the same traces that carry the 10-bit ADC measurement.
Recomendado
Programmable Logic Controller (PLC) and IoT Sensor Hubs
The MC9S08PL4CTG works as a leaf controller inside small PLCs and IoT sensor hubs, handling local I/O, debouncing and actuator decisions while a higher-level processor or radio handles connectivity. The interrupt controller supports up to 40 interrupt and reset sources with four levels of nesting, which allows timer, comparator and serial events to be prioritised without polling overhead. Plan the memory budget carefully: with 4 KB flash and 512 bytes of RAM the hub should forward events rather than buffer them, and the on-chip EEPROM is the right place for node identity and calibration data.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC9S08PL4CTG — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC9S08QE4CTG | MC9S08QE8CTG | MC9S08QE2CTG | MC9S08PL2CTG | MC9S08PL1CTG |
|---|---|---|---|---|---|---|
| Package | 16-pin TSSOP | 16-pin TSSOP - same | 16-pin TSSOP - same | 16-pin TSSOP - same | 16-pin TSSOP - same | 16-pin TSSOP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| CPU Core | 8-bit S08 central processor unit | 8-bit S08 central processor unit | 8-bit S08 central processor unit | 8-bit S08 central processor unit | 8-bit S08 central processor unit | 8-bit S08 central processor unit |
| Flash Program Memory | 4 KB (4K x 8) | 8 KB (+100%) | 8 KB (+100%) | 2 KB (-50%) | 2 KB (-50%) | 1 KB (-75%) |
Diferenciadores clave
- Larger program memory than the lower S08PL density parts in the identical footprint (frente a MC9S08PL2CTG)
- Cost-optimized S08PL integration of EEPROM, ADC and comparator reduces external component count (frente a MC9S08QE4CTG)
- Wide supply and temperature range for industrial deployment in a 16-pin TSSOP (frente a MC9S08PL1CTG)
- 20 MHz bus speed with deterministic interrupt handling (frente a MC9S08QE8CTG)
Notas de diseño
Keep the 16-pin TSSOP decoupling network tight: place a 100 nF ceramic capacitor at the supply pins and a 4.7 uF bulk capacitor within a few millimetres of the device. Because the S08PL integrates the analog converter and comparator on the same die as the switching core, route the analog input traces away from supply and PWM return paths. The narrow TSSOP lead pitch also means the ground pins should connect to a solid ground plane rather than a thin trace, to keep return current short.
Estimated: at a 5 V rail with 10 mA of on-chip and I/O load, the digital supply dissipation is roughly 5 V x 10 mA = 50 mW, and at 3.3 V with the same load about 33 mW. These are order-of-magnitude figures derived from the supply voltage and assumed load, not datasheet numbers. In practice the analog block and I/O drivers dominate, so budget supply headroom for peripheral load on top of core current and size the bulk capacitor for the switching transients that appear when the ADC and timers are active.
The most frequent design error with the MC9S08PL4CTG is underestimating the 4 KB flash limit and the 512-byte RAM budget. Plan code size and stack depth before committing to a feature list, use the on-chip EEPROM for constants and calibration rather than bloating flash with lookup data, and avoid deep recursive call chains. A second common mistake is assuming that all timer and comparator functions are available on every pin: consult the pin-connection and multiplexing tables in the MC9S08PL4 series datasheet before assigning a peripheral function to a specific pin.
For designs using the S08 debug and programming interface, keep the programming header pads accessible and route the debug clock and data lines away from analog inputs and from relay or motor drive traces. When the same board drives inductive or high-current loads, split the power and signal ground paths at a single point near the supply entry so that switching return current does not flow through the MCU ground area. This also reduces the coupling of motor noise into the 10-bit converter readings.
Información de cumplimiento
The manufacturer product page lists MC9S08PL4CTG as an active part with environmental quality and shipping information available, but explicit RoHS, REACH, halogen-free and conflict-minerals statements were not published in the listing text captured for this page. The device is specified from -40 °C to +85 °C for industrial and commercial use and is not presented as an AEC-Q100 qualified automotive variant.