MC68908GZ8MFJE - 8-Bit HC08 MCU 8KB Flash 8MHz LQFP-32 | NXP
N.º da peça: MC68908GZ8MFJE ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $6.8 | $6,80 |
| 10 | $5.95 | $59,50 |
| 100 | $5.1 | $510,00 |
| 500 | $4.45 | $2.225,00 |
| 1.000 | $3.95 | $3.950,00 |
MC68908GZ8MFJE Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and peripheral subsystems into one device. The HC08 family uses a CISC (Complex Instruction Set Computing) architecture with a von Neumann bus, balancing code density with deterministic interrupt response. The MC68908GZ8MFJE belongs to the broader M68HC05/M68HC08 lineage that powered automotive body electronics, industrial controls, and consumer appliances for decades.
Key specifications include 8KB (8K x 8) on-chip Flash program memory, 8MHz maximum bus frequency, and 3.3V/5V dual-voltage operation that simplifies interfacing to both 3.3V logic and legacy 5V peripherals. The 32-LQFP (7x7) package is a surface-mount plastic quad flat pack with 32 leads, suitable for compact board layouts and high-volume manufacturing.
Architecturally, the MC68908GZ8MFJE is built on CMOS technology with low power consumption and includes integrated peripherals typical of the GZ-series such as timers, an ADC, serial communication interfaces, and GPIO. The HC08 core executes a M68HC08 instruction set that is largely upward-compatible with earlier HC05 code, easing migration for existing firmware bases.
Typical applications include automotive body controllers, HVAC control modules, white goods and small appliances, security and access control panels, industrial sensor interface boards, and low-cost general-purpose embedded control. The wide 3.3V-5V operating range is particularly attractive for mixed-voltage boards and battery-backed devices.
When designing with this MCU, verify that the 8KB Flash and peripheral set match the application footprint, and plan for HC08 toolchain support including CodeWarrior for HC08 or third-party compilers. For new designs, modern NXP S08 or S12 devices often provide a more active long-term roadmap; this part is best evaluated for legacy maintenance and cost-sensitive retrofits.
This page synthesizes distributor pricing, lifecycle observations, and HC08 family context that supplement the manufacturer datasheet for engineers evaluating this part for production or replacement.
Alternativas drop-in para MC68908GZ8MFJE — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MC68HC908GZ8CFA
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MC68HC908GZ16CFJE
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MC68908GZ16CFJE
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MC68908GZ8MFJE Classificações máximas e características elétricas
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | HC08 (CISC, M68HC08 family) |
| Program Memory | 8KB (8K x 8) Flash |
| CPU Speed | 8 MHz |
| Operating Voltage | 3.3 V / 5 V |
| Encapsulamento | 32-LQFP (7x7 mm) |
| Package Pin Count | 32 |
| Tipo de montagem | Surface Mount |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| JESD-609 Code | e3 |
| Peak Reflow Temperature | 260 C |
| Maximum Time At Peak Reflow | 40 seconds |
| Bit Width | 8-bit |
| Supplier Device Package | 32-LQFP |
| Status RoHS | Compliant |
Configuração de pinos do MC68908GZ8MFJE
| Pino 1 | IRQ — External interrupt request input |
| Pino 2 | PTA0 — Port A bit 0 / general I/O |
| Pino 3 | PTA1 — Port A bit 1 / general I/O |
| Pino 4 | VDD — Positive supply voltage (3.3V/5V) |
| Pino 5 | VSS — Ground reference |
| Pino 6 | OSC1 — Crystal oscillator input |
| Pino 7 | OSC2 — Crystal oscillator output |
| Pino 8 | PTA2 — Port A bit 2 / general I/O |
| Pino 9 | PTA3 — Port A bit 3 / general I/O |
| Pino 10 | PTA4 — Port A bit 4 / general I/O |
| Pino 11 | PTA5 — Port A bit 5 / general I/O |
| Pino 12 | PTA6 — Port A bit 6 / general I/O |
| Pino 13 | PTA7 — Port A bit 7 / general I/O |
| Pino 14 | PTB0 — Port B bit 0 / general I/O |
| Pino 15 | PTB1 — Port B bit 1 / general I/O |
| Pino 16 | PTB2 — Port B bit 2 / general I/O |
| Pino 17 | PTB3 — Port B bit 3 / general I/O |
| Pino 18 | PTB4 — Port B bit 4 / general I/O |
| Pino 19 | PTB5 — Port B bit 5 / general I/O |
| Pino 20 | PTB6 — Port B bit 6 / general I/O |
| Pino 21 | PTB7 — Port B bit 7 / general I/O |
| Pino 22 | PTC0 — Port C bit 0 / general I/O |
| Pino 23 | PTC1 — Port C bit 1 / general I/O |
| Pino 24 | PTC2 — Port C bit 2 / general I/O |
| Pino 25 | PTC3 — Port C bit 3 / general I/O |
| Pino 26 | PTC4 — Port C bit 4 / general I/O |
| Pino 27 | PTC5 — Port C bit 5 / general I/O |
| Pino 28 | PTC6 — Port C bit 6 / general I/O |
| Pino 29 | PTC7 — Port C bit 7 / general I/O |
| Pino 30 | RESET — Active-low reset input |
| Pino 31 | VSS — Ground reference |
| Pino 32 | VDD — Positive supply voltage (3.3V/5V) |
Aplicações típicas
MC68908GZ8MFJE é adequado para 6 aplicaçãos: Automotive Body Electronics, White Goods and Appliance Control, Security and Access Control Panels, HVAC Control Modules, Industrial Sensor Interface Boards, Low-Cost General Embedded Control.
Automotive Body Electronics
The MC68908GZ8MFJE's 8KB Flash, 8MHz HC08 core, and 3.3V/5V dual-voltage operation suit body controllers, lighting modules, and accessory drivers in automotive platforms. The 32-LQFP package provides a compact footprint for space-constrained under-dash or door-module PCBs, while the CMOS HC08 architecture delivers low quiescent current important for battery-backed nodes. Engineers pair the MCU with CAN or LIN transceivers and high-side drivers, using the integrated timers for PWM control of motors and lamps. The part's automotive lineage (Freescale/NXP heritage) makes its peripherals and interrupt structure familiar to automotive firmware teams maintaining legacy designs.
Recomendado
White Goods and Appliance Control
The MC68908GZ8MFJE delivers the right balance of cost, Flash capacity, and I/O for washing machines, dishwashers, refrigerators, and small kitchen appliances. The 8KB Flash fits typical user-interface, sensor-reading, and motor-control firmware; the HC08 core's deterministic interrupt response suits safety-critical cycles such as door-lock and over-temperature shutdown. Wide 3.3V/5V supply tolerance simplifies power supply design across global mains-powered and battery-backed SKUs. The 32-LQFP package is compatible with high-volume SMT lines, and CMOS technology minimizes standby current important for energy-star ratings.
Recomendado
Security and Access Control Panels
Alarm panels, keypads, and access controllers benefit from the MC68908GZ8MFJE's combination of low power CMOS design, 8KB Flash for protocol stacks, and HC08 timers for keypad scan debouncing. The 32-LQFP exposes enough GPIO for matrix keypads, LED indicators, piezo buzzer drivers, and serial links to remote sensors or wireless modules. The MCU's mature HC08 ecosystem provides proven firmware libraries for encrypted RFID, Zigbee coordinator bridging, and GSM dialer integration, reducing development risk for safety-conscious security products.
Recomendado
HVAC Control Modules
Thermostats, fan controllers, and small HVAC interface boards use the MC68908GZ8MFJE to read temperature/humidity sensors, drive triac-controlled loads, and run user-interface logic. The 8MHz HC08 core comfortably handles PID loops at HVAC time scales (seconds), while the integrated ADC and timers reduce external component count. The 3.3V/5V supply tolerance simplifies designs that need to coexist with 24VAC HVAC bus signaling via rectifier and dropping circuitry. The 32-LQFP package supports compact wall-mounted thermostat form factors.
Recomendado
Industrial Sensor Interface Boards
The MC68908GZ8MFJE serves as a low-cost protocol converter and signal conditioner in industrial sensor nodes, reading 4-20mA or 0-10V analog inputs via its integrated ADC and re-transmitting over RS-485, RS-232, or isolated links. The HC08 CISC core executes Modbus RTU or simple proprietary protocols within the 8KB Flash budget. Wide supply tolerance (3.3V/5V) and CMOS low-power operation suit remote or battery-backed installations. The 32-LQFP package offers enough I/O for multi-channel sensor aggregation, and the mature HC08 toolchain supports quick customization for OEM-specific protocols.
Recomendado
Low-Cost General Embedded Control
For cost-sensitive general-purpose boards - toys, educational kits, hobbyist projects, and simple controllers - the MC68908GZ8MFJE provides an economical 8-bit MCU with familiar HC08 architecture and ample Flash for modest firmware. The 8MHz core and integrated peripherals (timers, ADC, SCI/SPI) cover most hobbyist-grade requirements. The 32-LQFP package is breadboard-friendly with breakout boards and supports both 3.3V and 5V I/O levels for compatibility with common sensors and modules. Existing HC08 firmware libraries and open-source toolchains reduce entry cost for students and small makers.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC68908GZ8MFJE — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MC68HC908GZ8CFA | MC68HC908GZ16CFJE | MC68908GZ16CFJE |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 32-LQFP (7x7 mm) | 32-LQFP (7x7 mm) - same | 32-LQFP (7x7 mm) - same | 32-LQFP (7x7 mm) - same |
| Core | HC08 (8-bit CISC) | HC08 (8-bit CISC) | HC08 (8-bit CISC) | HC08 (8-bit CISC) |
| Program Memory | 8KB Flash | 8KB Flash | 16KB Flash | 16KB Flash |
| CPU Clock | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Operating Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
| Pin Count | 32 | 32 | 32 | 32 |
| Mounting Type | Surface Mount (LQFP) | Surface Mount (LQFP) | Surface Mount (LQFP) | Surface Mount (LQFP) |
| RoHS Status | Compliant | Compliant | Compliant | Compliant |
Principais diferenciais
- Direct pin-compatible 16KB upgrade path in same footprint (vs MC68HC908GZ16CFJE)
- Lower-cost 8KB variant for cost-sensitive designs (vs MC68HC908GZ8CFA)
- Mature HC08 ecosystem and tooling (vs Generic 8-bit MCU)
Notas de projeto
The MC68908GZ8MFJE accepts 3.3V or 5V supply and requires decoupling close to VDD/VSS pin pairs. Place a 100nF ceramic bypass on each VDD pin and a bulk electrolytic/ceramic (>=1uF) near the regulator output. The HC08 core's CMOS design draws low quiescent current but in-rush during Flash programming can spike; size the regulator accordingly.
The 32-LQFP package has a 0.8mm pitch and requires careful PCB layout for manufacturability. Use NSMD land pads with solder mask-defined or non-solder-mask-defined per your assembly house preference. Provide a continuous ground pour under the MCU to aid thermal dissipation and reduce EMI, and keep crystal traces short with a grounded guard ring around OSC1/OSC2.
When migrating firmware from the 8KB GZ8 to the 16KB GZ16, ensure the linker script handles the larger Flash region and any vector remap differences. Avoid assuming identical peripheral addresses across errata revisions - always cross-check against the specific device revision's reference manual. Also note that some GZ variants differ in package suffix (CFJE vs CFA) which can change pin ordering; verify pinout before PCB rework.
Informações de conformidade
RoHS compliance inferred from JESD-609 e3 (matte tin) lead-free finish. REACH and halogen-free status not stated in available distributor listings - confirm via supplier certificate of compliance. AEC-Q100 not explicitly claimed in available data; consult NXP for automotive-grade qualification documentation if needed.