MC908GR48ACFUE - 8-Bit 8MHz 48KB Flash MCU 64-QFP | NXP
N.º de pieza: MC908GR48ACFUE ⚠ Última compra| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $9.94 | $9,94 |
| 10 | $9.1 | $91,00 |
| 100 | $8.1 | $810,00 |
| 500 | $7.45 | $3.725,00 |
| 1.000 | $6.95 | $6.950,00 |
MC908GR48ACFUE Descripción general
What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer that executes instructions on an 8-bit data path, providing a cost-effective programmable engine for embedded control. Within the broader product taxonomy, this part sits in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. NXP's HC08 family is a mature, low-power CISC architecture widely used in automotive and industrial applications because of its deterministic behavior, simple tool chain and long-term availability.
Key features include 48KB Flash program memory (48K x 8 organization), 1.5KB of on-chip RAM, an 8 MHz maximum bus frequency, an integrated ADC, multiple timers, a Serial Communications Interface (SCI) and Serial Peripheral Interface (SPI). The HC08 CPU core delivers predictable interrupt response and compact code density for C and assembly programmers. The wide 3.3V/5V operating range simplifies integration into mixed-voltage designs common in industrial and automotive environments.
The architecture pairs a CISC HC08 core with Flash memory that is in-system programmable, enabling firmware updates in the field via the built-in MON08 or background debug mode (BDM) interface. Internal peripherals are mapped to a unified address space, allowing deterministic register access. Power-saving modes (STOP and WAIT) reduce quiescent current for battery-backed applications.
Typical applications include industrial motor control (small BLDC and stepper drivers), appliance control (washing machines, dishwashers, microwave ovens), automotive body electronics (instrument clusters, lighting controllers), HVAC thermostatic controls, and consumer remote/keypad interface boards. The 48KB Flash size makes the part attractive for products that require a real-time OS or substantial state machines but do not justify a 32-bit ARM Cortex-M part.
When designing with this device, ensure the BDM/MON08 pins are brought out to a header for in-circuit programming and debug, and that an external supervisor or internal LVI circuit protects the Flash from low-voltage write corruption. Pin count and package footprint should be verified against the chosen PCB layout before committing to volume production.
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Alternativas directas para MC908GR48ACFUE — 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 MC908GR48ACFUE (mismo factor de forma y huella) — difiere en Program Memory Size, RAM Size, Package, Core Architecture, ADC.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MC908GR60ACFUE
✅ Sustitución directa✓ En stock
$9.65 / unidad
Ver hoja de datos →MC908GR48ACFUER
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC908AB32CFUE
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →MC908GZ48CFUE
✅ Sustitución directa✓ En stock
$11.29 / unidad
Ver hoja de datos →MC908GZ32CFUE
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC908GR48ACFUE Valores máximos y características eléctricas
| Manufacturer | NXP USA Inc. (originally Freescale Semiconductor) |
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | HC08 CISC |
| Program Memory | 48 KB Flash (48K x 8) |
| RAM Size | 1.5 KB |
| Maximum CPU Frequency | 8 MHz |
| Operating Voltage | 3.3 V / 5 V |
| Encapsulado | 64-QFP (14x14 mm) |
| Recuento de pines | 64 |
| Tipo de montaje | Surface Mount |
| Peripherals | ADC, Timers, SCI, SPI, GPIO |
| Ancho del bus de datos | 8-bit |
| Estado RoHS | Compliant per NXP product page |
Guía de configuración de pines de MC908GR48ACFUE 64-qfp (14x14 mm)
Configuración de pines para MC908GR48ACFUE (encapsulado 64-qfp (14x14 mm)). 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 MC908GR48ACFUE.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
MC908GR48ACFUE es adecuado para 6 aplicacións: Industrial Motor Control, Appliance Control Boards, Automotive Body Electronics, HVAC Thermostatic Controllers, Consumer Remote and Keypad Interfaces, Power Supply Monitoring and Supervisors.
Industrial Motor Control
The MC908GR48ACFUE drives small brushed DC, stepper or BLDC motors in industrial equipment such as pumps, fans and conveyor sub-systems. Its 8 MHz HC08 core delivers deterministic interrupt response required for commutation loops in the 1-10 kHz range, while the 48KB Flash holds commutation tables, PI controller state and field-oriented-control (FOC) routines without external program memory. Built-in timers (TIM1/TIM2) generate complementary PWM outputs with dead-time insertion for half-bridge drivers, and the on-chip ADC samples phase currents at the PWM update rate to close the current loop. Compared with newer ARM parts the MC908GR48ACFUE is favored where cost, not MIPS, dominates the BOM. Designers should verify the BDM (background debug mode) pin is exposed for in-system firmware updates once the motor housing is sealed.
Recomendado
Appliance Control Boards
Washing machines, dishwashers, microwave ovens and induction cooktops commonly use the MC908GR48ACFUE as the main user-interface and supervisory controller. The 48KB Flash stores finite-state-machine code for the wash cycle, EEPROM emulation for user settings, and keypad/display drivers, while the 1.5KB RAM holds scratch buffers for sensor debouncing and the LCD framebuffer. Integrated ADC channels read temperature (NTC), water level and current sensors; the SCI and SPI peripherals drive the HMI display and a slave inverter board. Wide 3.3V/5V tolerance simplifies interfaces to legacy triac drivers and modern I/O expanders. Replace only with the MC908GR60ACFUE when a new SKU requires more code (e.g., adding Wi-Fi provisioning logic).
Recomendado
Automotive Body Electronics
Body controllers, instrument clusters, lighting modules and HVAC panels in older-model vehicles still ship with the MC908GR48ACFUE because of its automotive-grade operating temperature range, watchdog timer and built-in SCI for OBD/K-line diagnostics. The HC08 core's deterministic interrupt latency suits CAN/LIN gateway firmware running on a companion transceiver, and the 48KB Flash holds the body-control state machine plus J1939/KWP2000 stacks. The 64-QFP package's exposed thermal pad allows sustained operation in dash-mounted enclosures at +85C ambient. NXP's -40C to +125C part variants (suffix V) extend this design to under-hood and lighting applications. Migrate to S32K1xx for new designs, but keep the MC908GR48ACFUE qualified for service replacements.
Recomendado
HVAC Thermostatic Controllers
Wall-mount thermostats and zoning controllers use the MC908GR48ACFUE to read room temperature, schedule setpoints and drive relay outputs for furnaces, heat pumps and dampers. Its 8 MHz CPU computes the PI control loop at 1 Hz and schedules 7-day programming tables within the 48KB Flash budget, while 1.5KB RAM holds the schedule ring buffer and filter state for the NTC temperature sensor. The on-chip ADC multiplexes thermistor inputs across multiple zones, and the timer module generates 1 ms ticks for software debouncing of mechanical switches. Low-voltage-indicator (LVI) and watchdog peripherals protect against brown-out corruption of the schedule memory. Choose the MC908GR48ACFUE over the GZ variant when computational throughput, not standby current, is the bottleneck.
Recomendado
Consumer Remote and Keypad Interfaces
RF remote controls, security keypads and small human-machine interfaces use the MC908GR48ACFUE because the HC08 core wakes from STOP mode on a GPIO interrupt, scans a 4x4 matrix keypad and returns to sleep in microseconds. The 48KB Flash holds IR/RF protocol libraries (Philips RC5/RC6, KeeLoq, proprietary), while the 1.5KB RAM buffers keystrokes. The integrated SCI connects to an external 433/868 MHz transceiver and the SPI drives a small OLED or character LCD. Wide supply tolerance (3.3V/5V) supports both alkaline (3V) and lithium (5V) battery configurations. Substitute with the lower-cost MC908AB32CFUE if protocol firmware fits within 32KB.
Recomendado
Power Supply Monitoring and Supervisors
Digital supervisory circuits for AC/DC and DC/DC converters use the MC908GR48ACFUE to sequence rails, log fault events and present a Modbus/SCPI interface. The 8 MHz HC08 reads front-end ADC channels for input/output voltage and current, executes digital control laws for pre-regulation, and drives a serial interface to a system controller. The 64-QFP package and 48KB Flash allow full-feature digital control firmware, while the SCI peripheral connects to a host PLC. The watchdog timer and LVI module guard against code runaway in unattended installations. Designers should follow the EMC layout notes in the datasheet, since the HC08's internal oscillator is sensitive to fast dV/dt on adjacent traces.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC908GR48ACFUE — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC908GR60ACFUE | MC908GR48ACFUER | MC908AB32CFUE | MC908GZ48CFUE | MC908GZ32CFUE |
|---|---|---|---|---|---|---|
| Package | 64-QFP (14x14) | 64-QFP (14x14) - same | 64-QFP (14x14) - same | 64-QFP (14x14) - same | 64-QFP (14x14) - same | 64-QFP (14x14) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Flash Memory | 48 KB | 60 KB | 48 KB | 32 KB | 48 KB | 32 KB |
| RAM Size | 1.5 KB | 1.5 KB | 1.5 KB | 1 KB | 1.5 KB | 1 KB |
| CPU Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Core Architecture | HC08 | HC08 | HC08 | HC08 | HC08 (GZ low-power variant) | HC08 (GZ low-power variant) |
| Operating Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
| Lifecycle Status | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy |
Diferenciadores clave
- More Flash than AB32 within the same 64-QFP footprint (frente a MC908AB32CFUE)
- GR family timer/ADC richness vs low-power GZ family (frente a MC908GZ48CFUE)
- Established automotive qualification (frente a Generic 8-bit MCUs)
Notas de diseño
Estimated: With an 8 MHz HC08 core the part is sensitive to high-frequency noise on adjacent traces; place the bulk decoupling capacitor (4.7 uF) within 5 mm of the VDD pins and a 100 nF ceramic as close as possible to each VDD/VSS pair. Keep the OSC1/OSC2 traces short and surrounded by a ground pour to prevent clock jitter. Always route BKGD/MON08 to an accessible header for background debug and in-system programming.
Do not attempt to program the Flash below the datasheet minimum VDD, or page erase may silently fail and corrupt adjacent pages; use the built-in low-voltage-inhibit (LVI) to gate Flash writes. Also, ensure unused GPIO pins are configured as outputs (not inputs left floating) to avoid parasitic-current draws in STOP mode that can exceed the datasheet quiescent spec.
The 64-QFP package without an exposed pad relies primarily on the 14x14 mm body and PCB copper for heat removal. For continuous operation at full 8 MHz and frequent ADC conversions, the copper area connected to the GND pins should be at least 2 square inches on each side of the board to keep junction temperature rise modest (estimated 25-30 C rise in still air).
Información de cumplimiento
Standard industrial-grade part; for AEC-Q100 qualified automotive variants, choose MC908GR48ACFUE with the V suffix or move to S32K1xx family. RoHS and REACH compliant per NXP product declaration.