MC9S08QD4CSC - 8-bit S08 MCU 4KB Flash 16MHz | NXP
N.º de pieza: MC9S08QD4CSC ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
MC9S08QD4CSC Descripción general
An 8-bit microcontroller (MCU) is a single-chip computer that combines a processor core, memory, and peripherals on one die, sitting at the entry level of the embedded control hierarchy: MCU -> microcontroller unit -> embedded processor -> semiconductor IC. The MC9S08QD4 belongs to the low-cost, high-performance HCS08 family, the lowest-end member of the S08 8-bit architecture from Freescale Semiconductor (now NXP).
Key features include the enhanced HCS08 CPU with the HC08 instruction set plus the added BGND instruction, a background debugging system supporting non-intrusive in-circuit emulation, and single-breakpoint capability (plus two additional on-chip breakpoints). The device operates from 3.3V or 5V supplies and provides 6 general-purpose I/O pins.
Technical depth comes from the S08 CISC architecture, which delivers efficient code density for small embedded control tasks. The on-chip 10-bit ADC with 4 input channels enables direct analog sensor acquisition, while the background debug controller (BDC) allows flash programming and debugging through a single-wire interface, reducing development cost in space-constrained designs.
Typical applications include small appliances, low-cost analog sensor nodes, battery chargers, small motor control, and industrial auxiliary control where an 8-pin footprint and minimal BOM count matter. The SOIC-8 package suits compact, surface-mount PCBs.
Design consideration: this part is listed as End of Life (EOL) on the NXP product page, so new designs should evaluate remaining-lifetime sourcing and consider the MC9S08QD2 or automotive S9S08QD4 family members where available.
This page synthesizes distributor availability data, the NXP MC9S08QD4 datasheet, drop-in family alternatives, and EOL lifecycle guidance not found on standard distributor listings.
Alternativas directas para MC9S08QD4CSC — 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 MC9S08QD4CSC (mismo factor de forma y huella) — difiere en Package, Debug Interface, RAM, Program Memory (Flash), Core.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MC9S08QD4MSC
✅ Sustitución directa✓ En stock
$1.18 / unidad
Ver hoja de datos →MC9S08QD2VSC
✅ Sustitución directa✓ En stock
$0.81 / unidad
Ver hoja de datos →S9S08QD4J1CSCR
✅ Sustitución directa✓ En stock
$4.42 / unidad
Ver hoja de datos →MC9S08QD4CSC Valores máximos y características eléctricas
| Core Processor | S08 (HCS08), 8-bit CISC |
| Core Size | 8-bit |
| Frecuencia de reloj máxima | 16 MHz |
| Flash Memory | 4 KB (4K x 8) |
| RAM | 256 B |
| Tensión de alimentación | 3.3 V / 5 V |
| ADC Resolution | 10-bit |
| ADC Channels | 4 |
| General-Purpose I/O | 6 |
| Instruction Set | HC08 with added BGND instruction |
| Debug Interface | Background debugging system (single-wire BDM) |
| Encapsulado | 8-SOIC |
| Tipo de montaje | Surface Mount |
| Packaging | Tube |
| Life Cycle Stage | End of Life (per NXP product page) |
Guía de configuración de pines de MC9S08QD4CSC 8-soic
Configuración de pines para MC9S08QD4CSC (encapsulado 8-soic). 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 MC9S08QD4CSC.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
MC9S08QD4CSC es adecuado para 6 aplicacións: Low-Cost Analog Sensor Nodes, Battery Charger Control, Small Appliance Control, Industrial Auxiliary Control, Small Motor Control, Human Interface and Indicator Logic.
Low-Cost Analog Sensor Nodes
The MC9S08QD4CSC fits sensor-node designs directly because its integrated 4-channel 10-bit ADC digitizes up to four analog inputs without an external converter, and its 6 GPIO pins cover status outputs and simple serial signaling. In a 5V or 3.3V node, the 16 MHz S08 core runs filtering and threshold logic comfortably while code remains within the 4 KB Flash budget. The single-wire background debug interface allows in-system calibration after assembly. Because the part is EOL, new sensor-node designs should verify remaining stock or use the S9S08QD4 automotive-grade variant, which offers the same die and peripherals with continued product-life commitments.
Recomendado
Battery Charger Control
Small charger products use the QD4's 10-bit ADC to monitor battery voltage and current-sense inputs across up to 4 channels, with GPIO driving charge-enable and LED indicators. The 16 MHz HCS08 core executes charge-termination algorithms, and the background debug system permits tuning of thresholds in-circuit during production. Operation from a 5V rail matches common USB and wall-adapter supplies. With only 256 bytes of RAM, control loops must be written economically, but typical CC/CV state machines fit well inside the 4 KB Flash. Designers should confirm ADC reference and VDD characteristics in the NXP MC9S08QD4 datasheet for charge-voltage accuracy targets.
Recomendado
Small Appliance Control
Appliance sub-functions such as lid sensing, temperature cut-off, and user-button scanning map cleanly onto the QD4's resources: 6 GPIO handle switches and indicators, and the 10-bit ADC reads an NTC thermistor directly from the 3.3V or 5V rail. The SOIC-8 footprint minimizes PCB area in lamp and motor-base assemblies. HC08-compatible C toolchains allow reuse of existing appliance firmware. Because NXP lists this part as End of Life, appliance manufacturers should perform a last-time-buy analysis or qualify the pin-compatible MC9S08QD2VSC/MC9S08QD4MSC variants on the same PCB layout to hedge supply risk.
Recomendado
Industrial Auxiliary Control
NXP explicitly positions the MC9S08QD family for both automotive and industrial low-end applications. In industrial panels, the QD4 serves as an auxiliary controller for fan-speed monitoring, limit-switch debouncing, and status LED logic alongside a main PLC-class processor. The 16 MHz bus provides headroom for simple communication bit-banging, and 5V operation interfaces directly with legacy industrial logic levels. The single-breakpoint plus two on-chip breakpoints capability of the on-chip debug module shortens commissioning. For environments outside commercial temperature limits, specify the MC9S08QD4MSC grade or the S9S08QD4 automotive/industrial ordering per NXP guidance.
Recomendado
Small Motor Control
Low-end motor control tasks such as DC fan drive and brushed-motor on/off with current limiting use the QD4's ADC channels for back-EMF or shunt-resistor sensing and a GPIO for the driver transistor gate. The 16 MHz S08 core supports PWM generation in firmware at practical frequencies for fan and small-pump loads. The 8-pin SOIC keeps the controller section down to a few square centimeters including decoupling. Thermal design should place the SOIC away from the driver device. Confirm PWM resolution trade-offs against the 4 KB Flash code budget and RAM limits when writing the control loop.
Recomendado
Human Interface and Indicator Logic
As a dedicated button-scanner and LED-sequencer, the QD4 frees the host processor of timing-critical housekeeping. Its 6 GPIO pins can multiplex a small key matrix plus status LEDs using charlieplexing techniques within the pin budget, while the 10-bit ADC digitizes a potentiometer or ambient-light sensor for brightness control. The BGND instruction and background debug system allow field firmware updates through the single-wire interface during manufacturing test. Drawing from 3.3V or 5V, it drops into either logic domain without level shifters. Since the part is EOL, include a qualification path to the pin-compatible QD2/QD4 family variants.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC9S08QD4CSC — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC9S08QD4MSC | MC9S08QD2VSC | S9S08QD4 |
|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC - same | 8-SOIC - same | SOIC-8 - same die family |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Frequency | S08, 16 MHz | S08, 16 MHz | S08, 16 MHz | S08, 16 MHz |
| Flash Memory | 4 KB | 4 KB | 2 KB | 4 KB |
| RAM | 256 B | 256 B | 256 B | 256 B |
| ADC | 10-bit, 4-channel | 10-bit, 4-channel | 10-bit, 4-channel | 10-bit, 4-channel |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
Diferenciadores clave
- 4 KB Flash in an 8-pin package (frente a MC9S08QD2VSC)
- Same die with temperature-grade options (frente a MC9S08QD4MSC)
- Automotive-specific ordering available (frente a S9S08QD4)
Notas de diseño
The MC9S08QD4CSC is End of Life per the NXP product page. For any design still using this part, immediately verify remaining authorized and aftermarket stock (DigiKey lists Rochester Electronics inventory), evaluate a last-time-buy sized to the product's remaining service life, and qualify the pin-compatible MC9S08QD2VSC or MC9S08QD4MSC on the same footprint as a contingency. Do not start new designs on this MPN without a supply-risk mitigation plan.
The device operates from 3.3V or 5V rails. Place a 0.1 uF ceramic decoupling capacitor directly across VDD/VSS pins and keep the trace loop short. If the ADC reference is derived from VDD, ensure the supply is clean during converter sampling - switching loads on shared GPIO can corrupt ADC readings. Check the NXP MC9S08QD4 datasheet electrical characteristics chapter for exact VDD ranges and flash program/erase requirements at each supply level.
With only 256 bytes of RAM and 4 KB of Flash, the QD4 rewards careful firmware budgeting: avoid heavy C library calls (printf, floating point) and prefer fixed-point arithmetic. Enable the background debug controller (set ENBDM) if you need STOP-mode debug access per the datasheet development-support chapter. Reserve the RESET/IRQ-capable pin appropriately, since with only 6 GPIO every pin assignment is significant in 8-pin designs.
Información de cumplimiento
Compliance status was not stated in the retrieved distributor snippets. The NXP product page includes an Environmental Quality section - check the official NXP MC9S08QD4CSC page for RoHS/REACH certificates. The S-prefixed S9S08QD4 variants are the automotive-specific orderings per NXP.
