MCHC908QT4VDWER - 8-bit HC08 MCU 4KB Flash 8MHz | NXP
N.º de pieza: MCHC908QT4VDWER ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.85 | $3,85 |
| 10 | $3.55 | $35,50 |
| 100 | $3.12 | $312,00 |
| 500 | $2.78 | $1.390,00 |
| 1.000 | $2.41 | $2.410,00 |
MCHC908QT4VDWER Descripción general
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (typically FLASH), volatile data memory (RAM), and peripheral set on one die. MCUs sit inside the embedded systems hierarchy as compact computing engines for sensor reading, actuator control, and human-machine interface tasks where a full microprocessor plus external chipset would be cost- and footprint-prohibitive. The MCHC908QT4 part occupies the small-footprint, low-pin-count end of the 8-bit MCU taxonomy, sharing its lineage with the broader M68HC05 and M68HC08 Motorola/NXP lineages.
Key features include 4KB FLASH for application and user application, 128 bytes RAM, 5 GPIO pins, an on-chip ADC, LVD and PWM modules, and an operating voltage range suitable for 3V to 5V systems. The DWE package designation corresponds to an 8-pin SOIC with tape-and-reel packaging, making it compatible with standard surface-mount assembly lines. The HC08 core offers a straightforward instruction set for assembly and C-language firmware development.
The part targets cost-sensitive applications where a small MCU with analog conversion and pulse-width modulation can replace discrete analog circuitry. With 4KB of FLASH and 5 I/O, the device is well-suited to single-function control loops such as simple motor control, LED driving, and basic user-interface handling. The legacy M68HC08 architecture provides deterministic interrupt latency for real-time control tasks.
Typical applications include appliance control modules, small consumer products, sensor interface nodes, LED lighting controllers, and battery-powered devices requiring low standby current. The 5 I/O pins constrain the part to designs where external circuitry can be driven with minimal GPIO.
When designing with this device, ensure the firmware budget fits the 4KB FLASH limit and that the 5 GPIO pins adequately cover all required inputs and outputs. For designs needing more memory or peripherals, the HC908QT2 (2KB) and HC908QY families offer pin-compatible scaling.
Alternativas directas para MCHC908QT4VDWER — 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 MCHC908QT4VDWER (mismo factor de forma y huella) — difiere en Package, ADC, Program Memory Size, Architecture, Maximum Clock Frequency.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MCHC908QT2VDWER
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MCHC908QT1VDWER
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC68HC908QT4CDWE
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MCHC908QT4CDWE
✅ Sustitución directa✓ En stock
$4.2 / unidad
Ver hoja de datos →MCHC908QT4VDWEFG
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MCHC908QT4VDWER Valores máximos y características eléctricas
| Core Processor | HC08 |
| Core Size | 8-Bit |
| Program Memory Size | 4 KB (4K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 128 x 8 (128 bytes) |
| Speed | 8 MHz |
| Number of I/O | 5 |
| Peripherals | LVD, POR, PWM |
| ADC | Yes (integrated) |
| Encapsulado | 8-SOIC (DWE), tape and reel |
| Tipo de montaje | Surface Mount |
| Series | HC08, HC908QT1/2/4 |
| Part Status | Not For New Designs |
Configuración de pines de MCHC908QT4VDWER
| Pin 1 | PTA0/AD0/TCLK — Port A bit 0 / ADC channel 0 / Timer clock input |
| Pin 2 | PTA1/AD1 — Port A bit 1 / ADC channel 1 |
| Pin 3 | VDD — Power supply |
| Pin 4 | VSS — Ground |
| Pin 5 | PTA2/AD2 — Port A bit 2 / ADC channel 2 |
| Pin 6 | PTA3/AD3 — Port A bit 3 / ADC channel 3 |
| Pin 7 | PTA4/AD4 — Port A bit 4 / ADC channel 4 |
| Pin 8 | RST — Reset input (active low) |
Aplicaciones típicas
MCHC908QT4VDWER es adecuado para 6 aplicacións: Appliance Control Module, LED Lighting Controller, Battery-Powered Sensor Node, Small Consumer Electronics, Simple Motor Control, Industrial Sensor Interface.
Appliance Control Module
The MCHC908QT4VDWER fits small appliance control boards where its 4 KB FLASH holds a state-driven firmware and the on-chip PWM directly drives a heater element or small motor. With 5 GPIO and the integrated ADC, the part reads temperature sensors or potentiometers without external converters. The HC08 deterministic interrupt latency supports the real-time control loop needed for closed-loop temperature regulation in toasters, coffee makers, or hair dryers.
Recomendado
LED Lighting Controller
For low-cost LED driver boards, the MCHC908QT4VDWER's on-chip PWM module and 5 GPIO pins are sufficient to dim and switch LED arrays in decorative or indicator lighting. The HC08 core runs a simple fade or chase pattern firmware within 4 KB FLASH. Low quiescent current and the small 8-pin SOIC footprint enable compact lamp-driver PCAs without external DAC or PWM ICs.
Recomendado
Battery-Powered Sensor Node
In small wireless or wired sensor nodes, the MCHC908QT4VDWER handles periodic sensor sampling with the integrated converter and transmits results over a single-wire or GPIO-bit-banged interface. With 128 bytes RAM and the HC08 low-power modes, the part suits battery-powered nodes that wake, sense, and sleep. The 8-pin SOIC saves board area, leaving room for a coin-cell holder and a single analog front-end.
Recomendado
Small Consumer Electronics
The MCHC908QT4VDWER targets single-function consumer products such as remote-control key fobs, simple toys, and personal electronics accessories. The HC08 instruction set supports small C-language or assembly firmware, and 4 KB FLASH is sufficient for button-decode, LED-indicator, and basic state-machine logic. The 8-pin SOIC surface-mount package is compatible with high-volume SMT lines.
Recomendado
Simple Motor Control
For brushed DC motor or small fan-speed control, the MCHC908QT4VDWER's PWM output and ADC input close a single-motor speed-control loop with no external driver IC beyond a discrete H-bridge. The HC08 core reads a feedback signal (tach or current sense) and adjusts PWM duty. The 5 GPIO includes PWM and ADC channels plus enable logic.
Recomendado
Industrial Sensor Interface
In factory-floor sensor-interface boards, the MCHC908QT4VDWER conditions and digitizes analog sensor signals via the integrated ADC and presents the result over a simple GPIO-based protocol. The HC08 deterministic interrupt handling ensures consistent sample timing. The 8-pin SOIC package drops into space-constrained sensor-head modules where board area is at a premium.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MCHC908QT4VDWER — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MCHC908QT2VDWER | MCHC908QT1VDWER | MC68HC908QT4CDWE |
|---|---|---|---|---|
| Package | 8-SOIC (DWE) | 8-SOIC (DWE) - same | 8-SOIC (DWE) - same | 8-SOIC (DWE) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Program Memory (FLASH) | 4 KB | 2 KB (-50%) | 1.5 KB (-62%) | 4 KB (same) |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Core Speed | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| GPIO Pins | 5 | 5 | 5 | 5 |
| ADC | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated) |
| Lifecycle Status | NRND | NRND | NRND | Obsolete |
| Peripherals | LVD, POR, PWM, ADC | LVD, POR, PWM, ADC | LVD, POR, PWM, ADC | LVD, POR, PWM, ADC |
Diferenciadores clave
- Largest FLASH in HC908QT SOIC family (frente a MCHC908QT2VDWER)
- Same die as legacy MC68HC908 prefix (frente a MC68HC908QT4CDWE)
- Compact 8-SOIC package with ADC (frente a HC908QY4CDWE)
Notas de diseño
The MCHC908QT4VDWER requires a clean VDD supply with adequate decoupling. Place a 100 nF ceramic capacitor as close as possible to the VDD pin, with a 10 uF bulk capacitor on the same supply rail. The integrated POR (Power-On Reset) handles safe startup; designers should verify that VDD rise time stays within the datasheet specification to avoid incomplete initialization. Estimated: at 8 MHz CPU and VDD = 5 V, active current is typically in the 5-15 mA range per NXP HC08 family datasheets.
The 8-pin SOIC footprint is compatible with standard surface-mount assembly lines using 1.27 mm pitch SOIC-8 land patterns. Maintain at least 0.5 mm clearance between the SOIC body and adjacent traces to avoid solder-bridge defects during reflow. The exposed pad is not present on this package, so no thermal pad via stitching is required. Engineers should follow the land-pattern dimensions in the NXP package outline document.
Because the part is marked Not For New Designs, do not start new 2026 designs with the MCHC908QT4VDWER. Existing production lines should confirm long-term supply with NXP or authorized distributors before placing volume orders. The 4 KB FLASH limit constrains firmware; designs approaching that ceiling should migrate to an active S08 or Kinetis part with at least 16 KB FLASH. Always verify pin compatibility when migrating from the legacy MC68HC908 prefix to the MCHC908 prefix.
Información de cumplimiento
RoHS compliance and lead-free status inferred from NXP product-page packaging information; specific REACH and conflict-minerals statements not retrieved in the verified web data.
