MC908GP32CFBE - 8-Bit HC08 MCU, 32KB Flash, 44-QFP | NXP
MPN: MC908GP32CFBE ✗ انتهى عمره الإنتاجيMC908GP32CFBE نظرة عامة
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and a set of peripherals such as timers, communication controllers, and ADCs into one package. MCUs sit at the lowest tier of the embedded computing hierarchy - below microprocessors and SoCs - and are the workhorse of deeply embedded automotive, industrial, and consumer designs. The HC08 family, in particular, occupies a mature, cost-optimized niche where deterministic 8-bit performance, low power, and small code size are more important than raw MIPS.
Key features of the MC908GP32CFBE include 32 KB of in-application reprogrammable Flash, 512 B of RAM, an 8-channel 8-bit ADC, two 16-bit timers, a CAN 2.0A/B controller (MSCAN08), one SCI (UART) and one SPI interface, plus a computer-operating-properly (COP) watchdog and low-voltage reset. The integrated CAN module is the standout feature that distinguishes this MCU from generic 8-bit parts and historically made it the controller of choice for in-vehicle networking nodes.
The architecture is a Harvard-style CISC core with a 16-bit stack pointer and 16-bit index register, executing HC08 instructions in 1 to 5 bus cycles. The Flash memory is organized as a single 32K x 8 array, allowing byte-level EEPROM emulation if needed. The MSCAN module implements CAN 2.0A/B active/passive with bus-off recovery, dual 32-bit acceptance filters, and listen-only mode.
Typical applications include automotive body controllers, HVAC actuators, instrument cluster nodes, industrial CAN I/O modules, sensor front-ends with on-chip ADC, and any design that needs CAN connectivity plus a low-cost 8-bit core. It is well-suited for brownfield designs that already use the HC08 tool chain.
A key design consideration is that NXP has issued an End-of-Life notice for this part, so new designs should target the HCS08 (S08) family (e.g., S08GB60A, S08QG family) for long-term availability. For legacy board replacements, the MC908GP32CFBE remains functional but should be bought against confirmed distributor stock.
بدائل مباشرة لـ MC908GP32CFBE — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع MC908GP32CFBE (نفس عامل الشكل والبصمة) — يختلف في Package, Program Memory Size, Core Architecture, Core Processor, RAM Size.
MC908GP32CFBER
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MC908GP32CFUE
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MC908GZ60CFAE
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←MC908AP64CFBE
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MC908JB8JDWE
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←MC908GP32CFBE الحدود القصوى والخصائص الكهربائية
| Core Architecture | M68HC08 (8-bit CISC) |
| Bus Frequency (max) | 8 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| RAM | 512 B |
| جهد التغذية | 2.0 V to 3.6 V |
| I/O Pins | 33 GPIO |
| ADC | 8-channel, 8-bit |
| Timers | 2 x 16-bit (TIM1, TIM2) |
| Communication | 1 x MSCAN (CAN 2.0A/B), 1 x SCI, 1 x SPI |
| Watchdog | COP (Computer Operating Properly) |
| العلبة | 44-pin QFP (10 x 10 mm) |
| نوع التركيب | Surface Mount |
| درجة حرارة التشغيل | -40 C to +85 C |
| Instruction Set Compatibility | M6805, M146805, M68HC05, M68HC08 |
| حالة RoHS | Compliant |
تكوين أطراف MC908GP32CFBE
| دبوس 1 | IRQ — External interrupt request |
| دبوس 2 | PTA0/TCLK — Port A bit 0 / Timer clock input |
| دبوس 3 | PTA1 — Port A bit 1 |
| دبوس 4 | PTA2 — Port A bit 2 |
| دبوس 5 | PTA3 — Port A bit 3 |
| دبوس 6 | PTA4 — Port A bit 4 |
| دبوس 7 | PTA5 — Port A bit 5 |
| دبوس 8 | PTA6 — Port A bit 6 |
| دبوس 9 | PTA7 — Port A bit 7 |
| دبوس 10 | PTB0/AD0 — Port B bit 0 / ADC channel 0 |
| دبوس 11 | PTB1/AD1 — Port B bit 1 / ADC channel 1 |
| دبوس 12 | PTB2/AD2 — Port B bit 2 / ADC channel 2 |
| دبوس 13 | PTB3/AD3 — Port B bit 3 / ADC channel 3 |
| دبوس 14 | PTB4/AD4 — Port B bit 4 / ADC channel 4 |
| دبوس 15 | PTB5/AD5 — Port B bit 5 / ADC channel 5 |
| دبوس 16 | PTB6/AD6 — Port B bit 6 / ADC channel 6 |
| دبوس 17 | PTB7/AD7 — Port B bit 7 / ADC channel 7 |
| دبوس 18 | PTC0/MOSI — Port C bit 0 / SPI MOSI |
| دبوس 19 | PTC1/MISO — Port C bit 1 / SPI MISO |
| دبوس 20 | PTC2/SPSCK — Port C bit 2 / SPI clock |
| دبوس 21 | PTC3/SS — Port C bit 3 / SPI slave select |
| دبوس 22 | PTC4/TxD — Port C bit 4 / SCI TxD |
| دبوس 23 | PTC5/RxD — Port C bit 5 / SCI RxD |
| دبوس 24 | PTC6 — Port C bit 6 |
| دبوس 25 | PTC7 — Port C bit 7 |
| دبوس 26 | PTD0/CANtx — Port D bit 0 / CAN transmit |
| دبوس 27 | PTD1/CANrx — Port D bit 1 / CAN receive |
| دبوس 28 | PTD2 — Port D bit 2 |
| دبوس 29 | PTD3 — Port D bit 3 |
| دبوس 30 | PTD4 — Port D bit 4 |
| دبوس 31 | PTD5 — Port D bit 5 |
| دبوس 32 | VDD — Positive supply (2.0-3.6 V) |
| دبوس 33 | VSS — Ground |
| دبوس 34 | OSC1 — Oscillator input |
| دبوس 35 | OSC2 — Oscillator output |
| دبوس 36 | RST — Reset input (active low) |
| دبوس 37 | BKGD — Background debug mode |
| دبوس 38 | PTD6 — Port D bit 6 |
| دبوس 39 | PTD7 — Port D bit 7 |
| دبوس 40 | PTE0 — Port E bit 0 |
| دبوس 41 | PTE1 — Port E bit 1 |
| دبوس 42 | PTE2 — Port E bit 2 |
| دبوس 43 | PTE3 — Port E bit 3 |
| دبوس 44 | PTE4 — Port E bit 4 |
التطبيقات النموذجية
MC908GP32CFBE مناسب لـ 6 التطبيقs: Automotive Body Control Modules, HVAC and Climate Control, Industrial CAN I/O Modules, Instrument Cluster CAN Nodes, Battery-Powered Sensor Front-Ends, Brownfield Industrial Replacement Designs.
Automotive Body Control Modules
The MC908GP32CFBE's integrated MSCAN08 module and 33 GPIO make it a strong fit for automotive body controllers that drive mirrors, lights, door locks, and seat positioners. At 8 MHz bus frequency it handles CAN 2.0A/B messaging with deterministic latency for sensor fusion nodes on the body CAN bus. The 32 KB Flash comfortably stores BCM application code plus calibration tables, while the 8-channel 8-bit ADC reads thermistor and switch inputs without external conversion hardware.
موصى به
HVAC and Climate Control
The MCU's 8-channel ADC, two 16-bit timers, and PWM-capable I/O lines suit climate-control actuators and blower motor controllers. It reads temperature sensors via ADC and drives TRIAC or MOSFET gate drivers through its timers, while the SCI peripheral talks to the panel control board at 9600-115200 baud. With 32 KB Flash it holds full PID loops and lookup tables for linearizing thermistor curves.
موصى به
Industrial CAN I/O Modules
Decentralized industrial I/O slices benefit from the MCU's CAN interface and 33 GPIO, replacing larger PLC racks in CAN-based fieldbus architectures like CANopen and DeviceNet. The 32 KB Flash hosts CANopen stack stubs or custom protocols, while the SCI/SPI peripherals add local RS-485 or sensor expansion. Its 2.0-3.6 V supply range tolerates 24 V industrial rail conditioning down to logic levels.
موصى به
Instrument Cluster CAN Nodes
Small CAN-attached cluster segments - telltale indicators, gauge stepper drivers, and warning lamps - can be built around the MC908GP32CFBE without adding an external controller. The 8-bit ADC reads panel illumination levels, timers drive gauge needles, and the integrated CAN node reports status to the central cluster processor. Its low BOM cost and small 44-QFP footprint fit behind tight cluster bezels.
موصى به
Battery-Powered Sensor Front-Ends
The MCU's 2.0-3.6 V wide supply range and HC08 low-power modes suit battery-backed or energy-harvesting sensor front-ends. It can sleep between CAN transmissions, waking on a timer interrupt to take an ADC reading and report back on the CAN bus. The 32 KB Flash supports on-chip EEPROM emulation, eliminating an external memory part for parameter storage.
موصى به
Brownfield Industrial Replacement Designs
For designs originally built around the M68HC05/M68HC08 ecosystem, the MC908GP32CFBE offers direct code compatibility and the same peripheral register model, easing legacy code migration. Existing assembly routines and C libraries port without rewrite, while the integrated CAN module modernizes older designs that previously required a stand-alone CAN controller. This makes the part useful for repair and lifecycle extension of field-deployed equipment.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ MC908GP32CFBE — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | MC908GP32CFBER | MC908GP32CFUE | MC908GZ60CFAE | MC908AP64CFBE | MC908JB8JDWE |
|---|---|---|---|---|---|---|
| Package | 44-QFP (10x10) | 44-QFP (10x10) - same | 44-QFP (10x10) - same | 44-QFP (10x10) - same | 44-QFP (10x10) - same | 44-QFP (10x10) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Flash Memory | 32 KB | 32 KB | 32 KB | 60 KB | 64 KB | 8 KB |
| RAM | 512 B | 512 B | 512 B | 2 KB | 2 KB | 256 B |
| CAN Module | MSCAN08 (CAN 2.0A/B) | MSCAN08 | MSCAN08 | MSCAN08 | MSCAN08 | No CAN (USB instead) |
| USB Module | None | None | None | None | None | USB 2.0 Full-Speed |
| Bus Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 6 MHz |
| Lifecycle Status | EOL | EOL | EOL | EOL | EOL | EOL |
أبرز الفروقات
- Pin-compatible upgrade path with more Flash (مقابلMC908GZ60CFAE)
- Higher-density Flash for larger code bases (مقابلMC908AP64CFBE)
- Integrated USB instead of CAN (مقابلMC908JB8JDWE)
ملاحظات التصميم
The MC908GP32CFBE requires a regulated 2.0-3.6 V supply on VDD (pin 32) with VSS (pin 33) as ground. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the pin to suppress switching transients during Flash programming. For battery-backed designs, hold VDD above 2.0 V during Flash write cycles or programming will abort and may corrupt the row.
Route the oscillator pins (OSC1, OSC2) as a short differential pair with a ground guard trace; keep them away from switching nodes like the SCI/UART lines and CAN traces. Place the crystal or resonator within 5 mm of OSC1/OSC2 to minimize parasitic capacitance. The 44-QFP at 10x10 mm body has a center thermal pad on some revisions - confirm via datasheet thermal section whether your variant requires a thermal relief pattern.
Do not assume the MC908GP32CFBE is the same as the HCS08/S08 family - the part is HC08 (legacy) and uses the older HC08 instruction set and registers. Migration to S08 requires updating the tool chain, linker scripts, and register definitions. Also note that the BKGD pin (background debug) is required for in-circuit programming - do not connect it directly to ground or VDD; leave it accessible for the debugger.
معلومات الامتثال
RoHS and lead-free per NXP product page and DigiKey/Mouser listings. AEC-Q100 not qualified for the standard GP32; automotive AEC-Q100 variants exist under different order codes (e.g., MC908AP16ACFUE).
