MCHC908GR8MFAE - 8KB Flash 8-bit HC08 MCU | NXP 32-LQFP
MPN: MCHC908GR8MFAE ✓ Hoạt độngMCHC908GR8MFAE Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer optimized for bit-oriented control and small data structures. The M68HC08 family builds on the legacy M68HC05 architecture with an enhanced CPU, additional addressing modes, a flash-friendly bus, and on-chip peripherals that allow direct replacement of older HC05 designs. Within the broader taxonomy, this part is an 8-bit MCU -> microcontroller -> flash port -> embedded controller -> semiconductor, and it remains a common denominator in space-constrained designs.
The MCHC908GR8MFAE features a 7.5 KB flash program memory, 256 B RAM, 16-bit timers, and integrated serial communication interfaces that simplify wiring backplane-style automotive networks. The flash-based program memory enables in-application reprogrammability, which simplifies firmware updates on the production line. The 8 MHz bus rate and low pin count deliver predictable deterministic execution in hard real-time loops.
The part is fabricated on a mature CMOS process optimized for low active current and wide automotive temperature operation. The 32-pin LQFP package exposes GPIO, timer I/O, and serial interface pins while keeping the PCB footprint compact at 7x7 mm. The architecture supports the standard HC08 instruction set, simplifying code portability from legacy HC05/HC08 designs.
Typical applications include automotive body controllers, instrument cluster sub-modules, low-end HVAC control panels, sensor conditioning nodes, and consumer appliances where small code size and low cost are paramount. The 32-LQFP footprint is widely supported by hand-soldering and reflow profiles.
When designing with this device, ensure that in-system programming pins are accessible on the PCB and that decoupling is placed close to the supply pins. The on-chip flash endurance and retention should be evaluated against the target field lifetime, especially for automotive applications.
Bộ thay thế dễ dàng lắp đặt cho MCHC908GR8MFAE — 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 MCHC908GR8MFAE (cùng hình factor và footprint) — khác nhau ở Program Memory Size, RAM Size.
MCHC908GR8CFAE
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MCHC908GR16CFAE
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MC908GR8CBE
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MCHC908GR8MFAE Tỷ lệ tối đa & tính chất điện
| Core | M68HC08 |
| Bề rộng đường dữ liệu | 8 bit |
| Program Memory Size | 7.5 KB (7.5K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 256 B |
| CPU Speed | 8 MHz |
| Timer | 16-bit |
| Serial Communication | SCI/SPI peripherals |
| Hộp | 32-LQFP (7x7 mm) |
| Kiểu lắp đặt | Surface Mount |
| Terminal Form | GULL WING |
| Package Shape | SQUARE |
| Temperature Grade | AUTOMOTIVE |
| Nhiệt độ hoạt động | -40C to +125C (automotive grade) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân MCHC908GR8MFAE
| Chân 1 | IRQ — External interrupt request |
| Chân 2 | RST — Reset input |
| Chân 3 | VSS — Ground |
| Chân 4 | OSC1 — Oscillator input |
| Chân 5 | OSC2 — Oscillator output |
| Chân 6 | VDD — Supply voltage |
| Chân 7 | PTA0 — Port A bit 0 / GPIO |
| Chân 8 | PTA1 — Port A bit 1 / GPIO |
| Chân 9 | PTA2 — Port A bit 2 / GPIO |
| Chân 10 | PTA3 — Port A bit 3 / GPIO |
| Chân 11 | PTA4 — Port A bit 4 / GPIO |
| Chân 12 | PTA5 — Port A bit 5 / GPIO |
| Chân 13 | PTA6 — Port A bit 6 / GPIO |
| Chân 14 | PTA7 — Port A bit 7 / GPIO |
| Chân 15 | PTB0 — Port B bit 0 / GPIO |
| Chân 16 | PTB1 — Port B bit 1 / GPIO |
| Chân 17 | PTB2 — Port B bit 2 / GPIO |
| Chân 18 | PTB3 — Port B bit 3 / GPIO |
| Chân 19 | PTB4 — Port B bit 4 / GPIO |
| Chân 20 | PTB5 — Port B bit 5 / GPIO |
| Chân 21 | PTB6 — Port B bit 6 / GPIO |
| Chân 22 | PTB7 — Port B bit 7 / GPIO |
| Chân 23 | PTC0 — Port C bit 0 / GPIO or TCH0 |
| Chân 24 | PTC1 — Port C bit 1 / GPIO or TCH1 |
| Chân 25 | PTC2 — Port C bit 2 / GPIO or TCH2 |
| Chân 26 | PTC3 — Port C bit 3 / GPIO or TCH3 |
| Chân 27 | PTC4 — Port C bit 4 / GPIO or TCH4 |
| Chân 28 | PTC5 — Port C bit 5 / GPIO or TCH5 |
| Chân 29 | TXD — SCI transmit |
| Chân 30 | RXD — SCI receive |
| Chân 31 | SS — SPI slave select |
| Chân 32 | VDD — Supply voltage (secondary) |
Ứng dụng tiêu biểu
MCHC908GR8MFAE phù hợp cho 6 Áp dụngs: Automotive Body Controllers, HVAC Control Panels, Instrument Cluster Sub-Modules, Sensor Conditioning Nodes, Consumer Appliance Control, Industrial Control Modules.
Automotive Body Controllers
The MCHC908GR8MFAE's automotive temperature range (-40C to +125C) and 8-bit HC08 core with 7.5 KB flash make it a natural choice for low-speed automotive body controllers managing lighting, mirror adjustments, and accessory switching. With 8 MHz bus and 256 B RAM it executes simple PWM and switch-debounce tasks deterministically. Recommended companion MPNs: MC9S08DZ32AMLH, MC908GZ32VFUE.
Được đề xuất
HVAC Control Panels
The MCHC908GR8MFAE fits HVAC control-panel applications where compact 32-LQFP footprint, low power, and 7.5 KB flash are sufficient to drive keypad scanning, LED indicators, and basic temperature regulation loops. Its automotive-grade qualification handles thermal stress near cabin HVAC modules. Companion MPNs: MC9S08QG4CFFE, MC9S08SH4MFK.
Được đề xuất
Instrument Cluster Sub-Modules
Instrument cluster sub-modules that drive gauge stepper motors and warning lamps benefit from the MCHC908GR8MFAE's 16-bit timer for PWM generation and its automotive-grade temperature tolerance. The 32-LQFP provides sufficient GPIO for indicator and dimming functions while the HC08 core executes fast gauge updates. Companion MPNs: MC9S08SE4CRL, MC9S08DV48ACLF.
Được đề xuất
Sensor Conditioning Nodes
The MCHC908GR8MFAE is well-suited for distributed sensor nodes that read analog signals, apply basic linearization, and forward data over a serial link. With 7.5 KB flash there is room for lookup tables and small calibration routines, while the 16-bit timer supports precise sampling intervals. Its low pin count keeps node PCB cost down. Companion MPNs: MC9S08QD4CSC, MC908QT2ACPE.
Được đề xuất
Consumer Appliance Control
White-goods and small consumer appliances needing deterministic 8-bit control benefit from the MCHC908GR8MFAE's mature HC08 toolchain and proven flash endurance. With 7.5 KB flash the part hosts user-interface state machines, while the 16-bit timer drives motor PWM and buzzer tones. Its surface-mount 32-LQFP supports automated assembly. Companion MPNs: MC908QY4AMPE, MC908QC16MDTE.
Được đề xuất
Industrial Control Modules
Industrial control modules such as relay drivers and small PLC expansion cards can use the MCHC908GR8MFAE for timing, debounce, and serial communication functions. Its wide operating temperature range supports factory-floor environments, while the automotive-grade qualification delivers long-term reliability. The 32-LQFP is easy to inspect and rework. Companion MPNs: MC9S12C32MPBE16, MC908AP16ACBE.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MCHC908GR8MFAE — 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 | MCHC908GR8CFAE | MCHC908GR8VFAE | MCHC908GR16CFAE | MC908GR8CBE |
|---|---|---|---|---|---|
| Package | 32-LQFP (7x7 mm) | 32-LQFP (7x7 mm) - same | 32-LQFP (7x7 mm) - same | 32-LQFP (7x7 mm) - same | 32-LQFP (7x7 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Architecture | M68HC08 8-bit | M68HC08 8-bit | M68HC08 8-bit | M68HC08 8-bit | M68HC08 8-bit |
| CPU Speed | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Flash Memory | 7.5 KB | 7.5 KB | 7.5 KB | 15 KB | 7.5 KB |
| RAM | 256 B | 256 B | 256 B | 384 B | 256 B |
| Temperature Grade | Automotive | Commercial | Extended | Commercial | Automotive |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant | Compliant |
Bảo phân biệt quan trọng
- Automotive temperature grade as standard (vsMCHC908GR8CFAE)
- Doubled flash for growing code bases (vsMCHC908GR16CFAE)
- Legacy HC05 code compatibility (vsMC908QT2ACPE)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor as close as possible to each VDD pin of the MCHC908GR8MFAE to suppress switching transients on the internal 8 MHz bus. Add a bulk 10 uF tantalum or ceramic capacitor near the regulator output to handle inrush during flash programming. Avoid long VDD traces, which can resonate with the package lead inductance and cause voltage dips during peak CPU activity.
Route the OSC1/OSC2 traces as short as possible and keep them away from switching signals such as PWM outputs on PTC0-PTC5 to avoid coupling noise into the CPU clock. For the 32-LQFP footprint, use a continuous ground plane beneath the part to reduce EMI. Keep the reset pin trace short and add an external pull-up to VDD to ensure reliable reset behavior at power-up.
Do not exceed the maximum flash endurance specification when designing in-application reprogramming loops, or the part may fail in the field. Always configure unused GPIO pins as outputs to reduce quiescent current. Verify the watchdog timer is enabled for automotive safety-critical designs to recover from software lockups.
Thông tin tuân thủ
Automotive temperature grade per Vyrian. RoHS and REACH compliance per NXP standard documentation. AEC-Q100 status inferred from automotive temperature grade designation.