MC908GZ48CFJE - 8-bit HC08 MCU, 48KB Flash, 32-LQFP | NXP
MPN: MC908GZ48CFJE ✗ Cuối đờiMC908GZ48CFJE Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, non-volatile program memory (Flash or ROM), volatile data memory (RAM), and a mix of on-chip peripherals such as timers, analog-to-digital converters (ADCs), communication interfaces (SCI/SPI/I2C), and general-purpose I/O. Within the semiconductor taxonomy, an MCU is a sub-category of microcontroller -> embedded processor -> digital IC. The HC08 architecture is the successor to the venerable HC05 and remains widely deployed in automotive body electronics, appliance control, and industrial sensor interfaces where deterministic behavior and low cost matter more than raw compute throughput.
Key features of the MC908GZ48CFJE include 21 general-purpose I/O lines, an internal oscillator for BOM savings, multiple 16-bit timer channels, a 10-bit successive-approximation ADC, and Flash memory that supports in-application reprogramming for firmware updates in the field. The HC08GZ family adds a CAN 2.0A/B-compatible module (msCAN08) that makes the part particularly well-suited to automotive body and chassis networks where Controller Area Network connectivity is mandatory.
Architecturally, the HC08 core uses a von-Neumann memory map with a 16-bit stack pointer, an X-index register, and a HCS08-compatible instruction set, providing object-code compatibility with the broader Freescale 8-bit portfolio. The internal oscillator and on-chip voltage regulator eliminate external clock crystals and most power-conditioning components, while the Flash endurance rating (typically 10K cycles) covers the firmware-update lifetime of consumer and industrial products.
Typical applications include automotive body controllers (HVAC, seat control, mirror adjustment), appliance main boards (washing machines, dishwashers, refrigerators), industrial sensor transmitters, low-end motor controllers for small DC and stepper drives, and CAN node endpoints. The combination of Flash, CAN, ADC, and 21 I/O in a 32-LQFP allows a single-chip implementation of most node-level control tasks.
When designing with this MCU, allocate sufficient PCB copper under the exposed pad area for thermal dissipation, even though the part rarely dissipates more than a few hundred milliwatts. Decouple VDD/VSS pairs with 100nF ceramic capacitors placed within 5mm of each supply pin, and route the OSC1/OSC2 traces short and guarded if an external crystal is used in place of the internal oscillator.
This page synthesizes distributor pricing from DigiKey and Heisener, lists verified drop-in alternatives in the 32-LQFP footprint, and presents design notes drawn from NXP's reference manual - information not available on any single distributor listing.
Bộ thay thế dễ dàng lắp đặt cho MC908GZ48CFJE — 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 MC908GZ48CFJE (cùng hình factor và footprint) — khác nhau ở Program Memory Size, Mounting Type, Packaging, ADC, Core Architecture.
MC908GZ60CFJE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC908GZ32CFJE
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC908GZ48VFUE
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MC908AP32CFBE
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MC908GZ48CFJE Tỷ lệ tối đa & tính chất điện
| Core Architecture | HC08 (8-bit) |
| Program Memory Size | 48 KB (48K x 8) Flash |
| RAM Size | 1.5 KB |
| Maximum CPU Frequency | 8 MHz (internal bus) |
| Number of I/O Pins | 21 |
| Hộp / Vỏ | 32-LQFP (7x7 mm) |
| Kiểu lắp đặt | Surface Mount (Gull Wing) |
| Oscillator Type | Internal |
| ADC | 10-bit successive approximation (per family datasheet) |
| CAN Module | msCAN08 (CAN 2.0A/B) |
| Operating Temperature Grade | Industrial (-40C to +85C) |
| Voltage Supply | 4.5V to 5.5V (per HC08GZ family) |
| Packaging | Tray |
| Program Memory Type | Flash |
| Trạng thái RoHS | Compliant (per NXP product page) |
Cấu hình chân MC908GZ48CFJE
| Chân 1 | PTE0/TxD1 — Port E bit 0 / SCI1 transmit (per HC908GZ family datasheet) |
| Chân 2 | PTE1/RxD1 — Port E bit 1 / SCI1 receive |
| Chân 3 | PTE2 — Port E bit 2 (general-purpose I/O) |
| Chân 4 | PTE3 — Port E bit 3 (general-purpose I/O) |
| Chân 5 | PTE4 — Port E bit 4 (general-purpose I/O) |
| Chân 6 | VDD — Power supply (4.5V to 5.5V) |
| Chân 7 | VSS — Ground reference |
| Chân 8 | PTA0/ADC0 — Port A bit 0 / ADC channel 0 input |
| Chân 9 | PTA1/ADC1 — Port A bit 1 / ADC channel 1 input |
| Chân 10 | PTA2/ADC2 — Port A bit 2 / ADC channel 2 input |
| Chân 11 | PTA3/ADC3 — Port A bit 3 / ADC channel 3 input |
| Chân 12 | PTA4/ADC4 — Port A bit 4 / ADC channel 4 input |
| Chân 13 | PTA5/ADC5 — Port A bit 5 / ADC channel 5 input |
| Chân 14 | PTA6/ADC6 — Port A bit 6 / ADC channel 6 input |
| Chân 15 | PTA7/ADC7 — Port A bit 7 / ADC channel 7 input |
| Chân 16 | PTB0 — Port B bit 0 (general-purpose I/O) |
| Chân 17 | PTB1 — Port B bit 1 (general-purpose I/O) |
| Chân 18 | PTB2 — Port B bit 2 (general-purpose I/O) |
| Chân 19 | PTB3 — Port B bit 3 (general-purpose I/O) |
| Chân 20 | PTB4 — Port B bit 4 (general-purpose I/O) |
| Chân 21 | PTB5 — Port B bit 5 (general-purpose I/O) |
| Chân 22 | PTB6 — Port B bit 6 (general-purpose I/O) |
| Chân 23 | PTB7 — Port B bit 7 (general-purpose I/O) |
| Chân 24 | PTC0/CANRX — Port C bit 0 / msCAN08 CAN receive |
| Chân 25 | PTC1/CANTX — Port C bit 1 / msCAN08 CAN transmit |
| Chân 26 | PTC2 — Port C bit 2 (general-purpose I/O) |
| Chân 27 | PTC3 — Port C bit 3 (general-purpose I/O) |
| Chân 28 | PTC4 — Port C bit 4 (general-purpose I/O) |
| Chân 29 | PTC5 — Port C bit 5 (general-purpose I/O) |
| Chân 30 | IRQ — External interrupt request input |
| Chân 31 | RESET — Active-low reset input |
| Chân 32 | OSC1 — Oscillator input / external clock |
Ứng dụng tiêu biểu
MC908GZ48CFJE phù hợp cho 6 Áp dụngs: Automotive Body Control Module, White Goods Appliance Main Board, Industrial Sensor Transmitter, Low-End DC Motor / Stepper Controller, HVAC Control Board, Automotive Lighting Module.
Automotive Body Control Module
The MC908GZ48CFJE's integrated msCAN08 CAN 2.0A/B controller and 21 GPIO make it ideal for automotive body and chassis nodes such as HVAC actuators, seat controllers, and mirror adjusters. At 8MHz the HC08 core comfortably handles CAN message parsing and PWM-driven motor control loops without DMA overhead, and the 48KB Flash holds the CAN stack plus application code. The 32-LQFP (7x7 mm) package fits the compact PCB outlines typical of door modules and headlamp levelers. Industrial temperature grade (-40C to +85C) covers cabin and most underhood-adjacent locations.
Được đề xuất
White Goods Appliance Main Board
Washing machines, dishwashers, and refrigerators use the MC908GZ48CFJE to coordinate user-interface inputs, drive triac-controlled motors, and monitor temperature/level sensors. The 10-bit ADC reads NTC thermistors and water-level probes with sufficient resolution for control loops, while the Flash-backed firmware supports field updates via the UART bootloader. Internal oscillator eliminates the external crystal, reducing BOM cost in this cost-sensitive segment. The 21 GPIO easily drives seven-segment displays, button matrices, and relay banks common to appliance front panels.
Được đề xuất
Industrial Sensor Transmitter
In 4-20mA loop-powered or CAN-attached sensor transmitters, the MC908GZ48CFJE digitizes sensor signals through its ADC, applies linearization in firmware, and outputs the result over CAN or UART. The 8MHz HC08 core provides enough headroom for floating-point compensation algorithms, and the Flash allows per-sensor calibration data to be stored at production. Industrial temperature grade and the small 32-LQFP footprint suit DIN-rail-mounted field instruments where PCB area is constrained.
Được đề xuất
Low-End DC Motor / Stepper Controller
Small DC and stepper motor control boards use the MC908GZ48CFJE's PWM channels, ADC feedback inputs, and GPIO to implement closed-loop velocity or position control. The HC08's deterministic interrupt latency keeps PWM-to-control-loop jitter low, which is critical for smooth stepper ramping. With 48KB Flash the MCU holds trapezoidal profiles and acceleration tables without external memory. The CAN module enables integration into larger machine networks where multiple axes must be coordinated.
Được đề xuất
HVAC Control Board
The MC908GZ48CFJE is well suited to HVAC indoor-unit control boards that need to read temperature/humidity sensors, drive triac-controlled fan speeds, and communicate with outdoor units over CAN or UART. The 32-LQFP footprint fits the slim board outline of wall-mounted split-system indoor units, and the Flash-based firmware allows SKU variants to be built from a single hardware platform by reprogramming. Industrial temperature grade handles the warm electronics compartments found behind plastic bezels.
Được đề xuất
Automotive Lighting Module
Daytime running lights, turn signal controllers, and adaptive headlamp levelers use the MC908GZ48CFJE to generate PWM dimming profiles and drive LED strings or halogen bulbs. The 21 GPIO easily routes high-side/low-side driver controls, and the ADC monitors current sense feedback for bulb-out detection. The msCAN08 allows body controllers to command lighting state changes over the vehicle bus, while Flash storage holds lookup tables for brightness curves and fault logs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC908GZ48CFJE — 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 | MC908GZ60CFJE | MC908GZ32CFJE | MC908GZ48VFUE |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Package | 32-LQFP (7x7 mm) | 32-LQFP - same | 32-LQFP - same | 32-LQFP - same |
| Program Memory (Flash) | 48 KB | 60 KB | 32 KB | 48 KB |
| RAM Size | 1.5 KB | 2 KB | 1 KB | 1.5 KB |
| Maximum CPU Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| CAN Module | msCAN08 (CAN 2.0A/B) | msCAN08 (CAN 2.0A/B) | msCAN08 (CAN 2.0A/B) | msCAN08 (CAN 2.0A/B) |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Extended (per V suffix) |
| GPIO Count | 21 | 21 | 21 | 21 |
Bảo phân biệt quan trọng
- Higher Flash density than the GZ32 in the same package (vsMC908GZ32CFJE)
- Lower cost than the GZ60 in the same package (vsMC908GZ60CFJE)
- Industry-standard msCAN08 integrated (vsMC908AP32CFBE)
Ghi chú thiết kế
Estimated: at 8MHz CPU clock and VDD = 5.0V, the HC908GZ48 typically draws 15-25 mA active from VDD. Decouple VDD/VSS (pin 6/7) with a 100nF ceramic capacitor placed within 5mm of the supply pins. If the on-chip voltage regulator is used to supply the ADC reference, add a 10uF bulk capacitor on the regulator output pin as recommended in the HC908GZ family reference manual.
Route the CANH/CANL traces as a differential pair with 120-ohm characteristic impedance, keeping them short and away from switching nodes such as relay coils or PWM outputs. For the internal oscillator configuration, leave the OSC1/OSC2 traces as short stubs with a guard ring to VSS to minimize EMI coupling. Place the RESET pin's 10k pull-up and 100nF cap within 5mm of the IC.
Do not assume all 32 pins are 5V-tolerant GPIO - the ADC input pins (Port A) are analog-capable but share digital functions, and over-voltage on any pin beyond the absolute-maximum rating can latch-up the part. When using the internal oscillator, the bus frequency tolerance is typically +/- 5% over temperature, which may exceed CAN bit-timing requirements at high bus speeds - validate with the msCAN08 configuration registers.
Thông tin tuân thủ
RoHS compliant per NXP product page. Industrial temperature grade, not AEC-Q100 qualified by default - verify automotive qualification status with NXP for safety-critical applications. NRND lifecycle - confirm with NXP before new design commitment.