MC908GP32CFBE - 8-Bit HC08 MCU, 32KB Flash, 44-QFP | NXP
MPN: MC908GP32CFBE ✗ Cuối đờiMC908GP32CFBE Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho MC908GP32CFBE — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC908GP32CFBE (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Core Architecture, Core Processor, RAM Size.
MC908GP32CFBER
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC908GP32CFUE
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC908GZ60CFAE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC908AP64CFBE
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC908JB8JDWE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC908GP32CFBE Tỷ lệ tối đa & tính chất điện
| Core Architecture | M68HC08 (8-bit CISC) |
| Bus Frequency (max) | 8 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| RAM | 512 B |
| Điện áp cung cấp | 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) |
| Hộp | 44-pin QFP (10 x 10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 C to +85 C |
| Instruction Set Compatibility | M6805, M146805, M68HC05, M68HC08 |
| Trạng thái RoHS | Compliant |
Cấu hình chân MC908GP32CFBE
| Chân 1 | IRQ — External interrupt request |
| Chân 2 | PTA0/TCLK — Port A bit 0 / Timer clock input |
| Chân 3 | PTA1 — Port A bit 1 |
| Chân 4 | PTA2 — Port A bit 2 |
| Chân 5 | PTA3 — Port A bit 3 |
| Chân 6 | PTA4 — Port A bit 4 |
| Chân 7 | PTA5 — Port A bit 5 |
| Chân 8 | PTA6 — Port A bit 6 |
| Chân 9 | PTA7 — Port A bit 7 |
| Chân 10 | PTB0/AD0 — Port B bit 0 / ADC channel 0 |
| Chân 11 | PTB1/AD1 — Port B bit 1 / ADC channel 1 |
| Chân 12 | PTB2/AD2 — Port B bit 2 / ADC channel 2 |
| Chân 13 | PTB3/AD3 — Port B bit 3 / ADC channel 3 |
| Chân 14 | PTB4/AD4 — Port B bit 4 / ADC channel 4 |
| Chân 15 | PTB5/AD5 — Port B bit 5 / ADC channel 5 |
| Chân 16 | PTB6/AD6 — Port B bit 6 / ADC channel 6 |
| Chân 17 | PTB7/AD7 — Port B bit 7 / ADC channel 7 |
| Chân 18 | PTC0/MOSI — Port C bit 0 / SPI MOSI |
| Chân 19 | PTC1/MISO — Port C bit 1 / SPI MISO |
| Chân 20 | PTC2/SPSCK — Port C bit 2 / SPI clock |
| Chân 21 | PTC3/SS — Port C bit 3 / SPI slave select |
| Chân 22 | PTC4/TxD — Port C bit 4 / SCI TxD |
| Chân 23 | PTC5/RxD — Port C bit 5 / SCI RxD |
| Chân 24 | PTC6 — Port C bit 6 |
| Chân 25 | PTC7 — Port C bit 7 |
| Chân 26 | PTD0/CANtx — Port D bit 0 / CAN transmit |
| Chân 27 | PTD1/CANrx — Port D bit 1 / CAN receive |
| Chân 28 | PTD2 — Port D bit 2 |
| Chân 29 | PTD3 — Port D bit 3 |
| Chân 30 | PTD4 — Port D bit 4 |
| Chân 31 | PTD5 — Port D bit 5 |
| Chân 32 | VDD — Positive supply (2.0-3.6 V) |
| Chân 33 | VSS — Ground |
| Chân 34 | OSC1 — Oscillator input |
| Chân 35 | OSC2 — Oscillator output |
| Chân 36 | RST — Reset input (active low) |
| Chân 37 | BKGD — Background debug mode |
| Chân 38 | PTD6 — Port D bit 6 |
| Chân 39 | PTD7 — Port D bit 7 |
| Chân 40 | PTE0 — Port E bit 0 |
| Chân 41 | PTE1 — Port E bit 1 |
| Chân 42 | PTE2 — Port E bit 2 |
| Chân 43 | PTE3 — Port E bit 3 |
| Chân 44 | PTE4 — Port E bit 4 |
Ứng dụng tiêu biểu
MC908GP32CFBE phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC908GP32CFBE — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Pin-compatible upgrade path with more Flash (vsMC908GZ60CFAE)
- Higher-density Flash for larger code bases (vsMC908AP64CFBE)
- Integrated USB instead of CAN (vsMC908JB8JDWE)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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).
