S9S08QD4J1VSC - 8-bit S08 MCU 4KB Flash 16MHz SOIC-8 | NXP
N.º de pieza: S9S08QD4J1VSC ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.15 | $2,15 |
| 10 | $1.95 | $19,50 |
| 100 | $1.74 | $174,00 |
| 500 | $1.52 | $760,00 |
| 1.000 | $1.31 | $1.310,00 |
S9S08QD4J1VSC Descripción general
A microcontroller (MCU) is an integrated circuit containing a CPU, program memory (Flash/ROM), data memory (RAM), and programmable peripherals on a single silicon die. 8-bit MCUs target cost-sensitive, deterministic embedded applications where processing throughput requirements are modest but reliability and small pin count matter. The HCS08 family sits below 32-bit Cortex-M parts in the NXP automotive hierarchy but offers lower cost, smaller footprints, and simpler toolchains for body electronics, sensor interfaces, and human-machine interface (HMI) nodes.
Key differentiating features of the S9S08QD4J1VSC include its automotive AEC-Q100 Grade 2 qualification, 4 KB Flash program memory with security, a 16 MHz bus clock from an internal oscillator that eliminates the external crystal, and a wide 2.7V-5.5V supply that interfaces directly to 3.3V or 5V logic rails. The integrated 10-bit ADC with internal channel selection simplifies sensor reading, and the small SOIC-8 footprint suits space-constrained automotive PCBAs.
The S9S08QD4J1VSC implements a HC08-compatible instruction set extended with the BGND instruction, plus a background debugging system that allows single-breakpoint in-circuit debug plus two additional breakpoints in on-chip flash. Internal clock sources include a trimmable internal reference and an FLL-stabilized bus clock, eliminating external crystal cost.
Typical applications include automotive body controllers, simple sensor signal conditioning, LIN slave nodes, LED drivers, HVAC actuators, low-end HVAC fan control, automotive rear lighting, and small appliance control. The automotive temperature range and AEC-Q100 qualification make it a strong fit for cabin-mounted and under-hood electronics. Industrial uses include sensor interface modules and basic motor drivers in 24V-bus systems.
When designing with this part, plan for a robust decoupling network (100 nF plus 4.7 uF bulk) close to VDD/VSS and follow NXP's recommended PCB layout for SOIC-8 to maintain EMI margins under automotive conducted-noise tests. The S9S08QD4 family is also notable for its low power-down current, which is useful for always-on battery-backed automotive modules.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical automotive design notes not found in the manufacturer datasheet, giving a one-stop comparison view for sourcing and design.
Alternativas directas para S9S08QD4J1VSC — 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 S9S08QD4J1VSC (mismo factor de forma y huella) — difiere en Package, RAM, ADC, Core Architecture, Debug Interface.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
S9S08QD4J2MSCR
✅ Sustitución directa✓ En stock
$1.55 / unidad
Ver hoja de datos →MC9S08QD2VSC
✅ Sustitución directa✓ En stock
$0.81 / unidad
Ver hoja de datos →MC9RS08KA1CDBR
✅ Sustitución directa✓ En stock
$2.05 / unidad
Ver hoja de datos →MC9S08QD4J1VSC
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
MC9S08QD4MSC
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.18 / unidad
Ver hoja de datos →S9S08QD4J1VSC Valores máximos y características eléctricas
| Core Architecture | HCS08 (S08 family) |
| CPU Bit Width | 8-bit |
| Maximum CPU Frequency | 16 MHz |
| Program Memory (Flash) | 4 KB (4K x 8) |
| RAM | 256 B |
| Supply Voltage (VDD) | 2.7 V to 5.5 V |
| Temperatura de funcionamiento | -40C to +105C |
| Encapsulado | 8-pin SOIC (SOIC-8) |
| Tipo de montaje | Surface Mount |
| ADC | 8-channel 10-bit |
| Timers | TPM (16-bit) + MTIM (8-bit) |
| Debug Interface | Background debug (single wire) + on-chip breakpoints |
| AEC-Q100 | Qualified (automotive) |
| Instruction Set | HC08 + BGND |
| Nivel MSL | MSL3 (per SOIC-8 standard) |
| Estado RoHS | Compliant |
Configuración de pines de S9S08QD4J1VSC
| Pin 1 | VDD — Supply voltage (2.7V to 5.5V) |
| Pin 2 | BKGD/MS — Background debug / mode select |
| Pin 3 | PTA0/TCLK — General I/O / external clock input |
| Pin 4 | PTA1/TPMCH0 — General I/O / TPM channel 0 |
| Pin 5 | PTA2/ADC0 — General I/O / ADC channel 0 |
| Pin 6 | PTA3/ADC1 — General I/O / ADC channel 1 |
| Pin 7 | VSS — Ground |
| Pin 8 | PTA4/RESET — General I/O / reset (active low) |
Aplicaciones típicas
S9S08QD4J1VSC es adecuado para 6 aplicacións: Automotive Body Controller Node, LIN Bus Slave Node, LED Driver Module, HVAC Sensor Interface, Small Appliance Control, Industrial Sensor Module.
Automotive Body Controller Node
The S9S08QD4J1VSC is well-suited to single-function body controllers such as mirror adjusters, simple window lift switches, and seat-position sensors, where AEC-Q100 automotive qualification and a compact SOIC-8 footprint matter more than peripheral count. With 4 KB Flash and 256 B RAM the part handles straightforward state-machine control loops and LIN-slave communication. The 2.7V to 5.5V supply interfaces directly to 12V-bus regulated rails without extra level shifting, while the integrated 10-bit ADC reads switch and sensor analog signals without external components. Designers typically use the TPM (16-bit timer) for PWM-driven LED or motor control outputs and the internal RTI for watchdog-grade timing, reducing BOM cost versus discrete timer ICs.
Recomendado
LIN Bus Slave Node
For LIN 2.x slave applications in automotive networks, the S9S08QD4J1VSC offers a low-cost 8-bit engine with sufficient Flash for LIN protocol stacks. The internal 16 MHz bus clock and a trimmable oscillator support LIN timing tolerances without external crystal, saving BOM cost in seat-control, mirror, or HVAC flap nodes. The MCU's automotive temperature range (-40C to +105C) and AEC-Q100 qualification satisfy cabin-mounted LIN slave requirements. Combined with an external LIN transceiver IC, this part forms the lowest-cost LIN-slave bill of materials in the S08 family, with on-chip ADC handling position feedback and TPM generating PWM for motor control.
Recomendado
LED Driver Module
In automotive interior lighting, indicator LED strips, and simple RGB modules, the S9S08QD4J1VSC provides PWM generation through its TPM to drive FETs or LED drivers with up to 16-bit resolution. The 4 KB Flash comfortably fits lighting-state firmware including fade curves, color sequences, and CAN/LIN command handling. The 10-bit ADC reads ambient light sensors for automatic brightness, while the wide 2.7V to 5.5V supply operates directly from automotive 12V-bus rails after a simple regulator. The SOIC-8 footprint fits inside the LED housing PCB, minimizing mechanical envelope, and the AEC-Q100 qualification supports cabin and exterior lighting for professional.
Recomendado
HVAC Sensor Interface
For HVAC temperature, humidity, and pressure sensor interfaces in automotive climate control, the S9S08QD4J1VSC's 8-channel 10-bit ADC multiplexes multiple analog sensors through a single MCU, simplifying the analog front-end. The 4 KB Flash stores linearization tables and sensor-fusion logic for accurate cabin climate feedback. Operating temperature up to +105C supports under-hood or engine-bay sensor modules, while the AEC-Q100 qualification satisfies automotive OEM requirements. The low pin count suits PCBAs with minimal real estate, and the internal oscillator eliminates a crystal on the sensor module, reducing overall BOM cost.
Recomendado
Small Appliance Control
Beyond automotive, the S9S08QD4J1VSC serves in cost-sensitive small appliance controllers such as simple fans, basic kitchen timers, and low-end coffee machines. The 16 MHz HCS08 CPU executes control loops with predictable latency, while 4 KB Flash holds application firmware without needing external memory. The 2.7V-5.5V supply accommodates 3.3V or 5V regulated rails common in appliances, and the SOIC-8 footprint fits miniaturized control boards. The internal oscillator saves the cost of an external resonator, and the integrated ADC reads potentiometers, temperature sensors, and current-sense amplifiers for closed-loop control.
Recomendado
Industrial Sensor Module
In industrial 24V-bus sensor modules, the S9S08QD4J1VSC's wide supply range and automotive-grade temperature tolerance suit factory floor environments. The 10-bit ADC digitizes analog sensor signals, while the internal 16 MHz bus clock handles Modbus RTU or simple proprietary protocols over UART. The 4 KB Flash stores calibration constants and node address configuration. The small SOIC-8 package fits inside IP65 sensor housings, and the BGND background debug supports in-circuit firmware updates in the field via the debug pin. Combined with a discrete RS-485 transceiver, this MCU forms the lowest-cost industrial sensor node in the S08 family.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para S9S08QD4J1VSC — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | S9S08QD4J2MSCR | MC9S08QD2VSC | MC9RS08KA1CDBR | MC9S08QD4J1VSC | MC9S08QD4MSC |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | SOIC-8 | SOIC-8 - same | SOIC-8 - same | SOIC-8 - same | SOIC-8 - same | SOIC-8 - same |
| Core | HCS08 (16 MHz) | HCS08 (16 MHz) | HCS08 (16 MHz) | RS08 (10 MHz) | HCS08 (16 MHz) | HCS08 (16 MHz) |
| Flash | 4 KB | 4 KB | 2 KB | 1 KB | 4 KB | 4 KB |
| RAM | 256 B | 256 B | 128 B | 64 B | 256 B | 256 B |
| Operating Temperature | -40C to +105C (AEC-Q100) | -40C to +105C (AEC-Q100) | -40C to +105C (AEC-Q100) | -40C to +85C | -40C to +105C (AEC-Q100) | -40C to +85C (industrial) |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 1.8V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V |
| Automotive Grade | Yes (AEC-Q100) | Yes | Yes | No (consumer/industrial) | Yes | No (industrial grade) |
Diferenciadores clave
- Lowest-cost AEC-Q100 qualified 8-pin S08 MCU (frente a MC9RS08KA1CDBR)
- Extended temperature variant for under-hood use (frente a MC9S08QD4MSC)
- Larger Flash for richer firmware (frente a MC9S08QD2VSC)
Notas de diseño
Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of the VDD pin and a 4.7 uF bulk capacitor adjacent to the supply trace to handle transient load steps from internal ADC and timer peripherals. Per the NXP S9S08QD4 datasheet, improper decoupling may cause ADC reference drift during fast temperature changes; for AEC-Q100 designs, use X7R or X8R dielectrics that retain capacitance across -40C to +125C.
Estimated: At continuous 16 MHz operation, the S9S08QD4J1VSC typically draws about 10 mA from VDD, dissipating approximately 30 mW at 3.3V. The SOIC-8 package has theta_JA around 130 C/W, so junction temperature rise above ambient stays well under 5 C in normal operation. For under-hood applications near +105C ambient, confirm thermal performance with the manufacturer's characterization data and consider adding copper pour under the SOIC-8 thermal pad (if present on the variant) for margin.
Keep the BKGD/MS debug pin trace short and isolated from switching nodes to avoid false debug entry during EMC events. Route the analog ADC inputs away from PWM-driven outputs (TPMCH0) to minimize coupling, and add a small RC filter (1 kohm plus 100 pF) on ADC inputs for automotive sensor signals. NXP recommends a ground pour on the top layer stitched with multiple vias to the bottom ground plane to control emissions under ISO 7637-2 conducted-noise tests.
Do not leave the BKGD/MS pin floating during operation - a stable high or proper pull-up is required to prevent unintended mode entry. When programming in-circuit, ensure VDD is stable above 2.7V before asserting BKGD low for reset, as brown-out during reset may corrupt Flash. For LIN slave nodes, add an external watchdog timer or use the internal COP for failsafe recovery from software lockups, since the S08 core lacks hardware stack overflow detection.
Información de cumplimiento
AEC-Q100 qualified per the J1VSC suffix on the NXP product page. RoHS and REACH compliance standard for SOIC-8 NXP automotive parts. Halogen-free status not explicitly stated in the verified data.
