MC908JW16FAE - 8-bit HC08 MCU with USB, 16KB Flash | NXP
MPN: MC908JW16FAE ✗ انتهى عمره الإنتاجيMC908JW16FAE نظرة عامة
Background knowledge: An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for embedded control tasks such as human-interface devices, sensor reading, and low-rate communication. The MC908JW16 belongs to the Freescale/NXP HC08 family, which sits in the product-type hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. HC08 devices use a von Neumann architecture with on-chip flash and RAM, and the JW sub-family adds a USB 1.1 device controller plus a 12-channel, 10-bit ADC.
Key features include 16 KB of flash program memory with in-application programming support, a USB 1.1 full-speed (12 Mbps) device transceiver that meets USB 2.0 full-speed electrical specifications, and a 12-channel 10-bit analog-to-digital converter. Additional peripherals are a 2-channel timer interface (TPM), a serial communications interface (SCI), a serial peripheral interface (SPI), and an 8-bit keyboard interrupt module.
The architecture pairs the HC08 CPU with an on-chip voltage regulator, brownout reset, low-voltage reset, and a clock generator module supporting an external crystal or internal trimmable reference. The integrated USB pull-up on the D+ line and the USB transceiver allow direct connection to a Type-B or Mini-B connector, eliminating external PHY circuitry.
Typical applications include USB keyboards, USB mice, USB gamepads, USB barcode scanners, USB custom HID peripherals, low-cost USB-to-UART bridges, and embedded consumer devices that require a single-chip USB interface.
When designing with this part, observe USB signal-integrity guidelines and keep the D+/D- traces short, length-matched, and routed over a continuous ground plane; the integrated transceiver is sufficient for typical peripheral cables up to 3 m.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
بدائل مباشرة لـ MC908JW16FAE — 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 MC908JW16FAE (نفس عامل الشكل والبصمة) — يختلف في Maximum Clock Frequency, Operating Supply Voltage, Operating Temperature, Package, Program Memory Size.
MC908JW32FAE
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
MC908JB16FAE
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←MC908JW16FAE الحدود القصوى والخصائص الكهربائية
| Core | HC08 |
| عرض ناقل البيانات | 8 bit |
| Program Memory Size | 16 KB flash |
| RAM Size | 1.4 KB |
| أقصى تردد للساعة | 8 MHz internal bus |
| جهد التغذية التشغيلي | 2.7 V to 3.6 V |
| ADC | 12-channel, 10-bit |
| USB Interface | USB 1.1 full-speed device (12 Mbps) |
| Timers | 2-channel TPM |
| Communication Interfaces | SCI, SPI |
| العلبة | 48-pin LQFP |
| نوع التركيب | Surface Mount |
| درجة حرارة التشغيل | 0C to +70C |
| حالة RoHS | Compliant |
تكوين أطراف MC908JW16FAE
| دبوس 1 | PTA0 — Port A bit 0 / ADC channel 0 |
| دبوس 2 | PTA1 — Port A bit 1 / ADC channel 1 |
| دبوس 3 | PTA2 — Port A bit 2 / ADC channel 2 |
| دبوس 4 | PTA3 — Port A bit 3 / ADC channel 3 |
| دبوس 5 | VSS — Ground |
| دبوس 6 | VDD — Power supply 2.7-3.6 V |
| دبوس 7 | PTA4 — Port A bit 4 / ADC channel 4 |
| دبوس 8 | PTA5 — Port A bit 5 / ADC channel 5 |
| دبوس 9 | PTA6 — Port A bit 6 / ADC channel 6 |
| دبوس 10 | PTA7 — Port A bit 7 / ADC channel 7 |
| دبوس 11 | PTB0 — Port B bit 0 / ADC channel 8 |
| دبوس 12 | PTB1 — Port B bit 1 / ADC channel 9 |
| دبوس 13 | PTB2 — Port B bit 2 / ADC channel 10 |
| دبوس 14 | PTB3 — Port B bit 3 / ADC channel 11 |
| دبوس 15 | PTB4 — Port B bit 4 |
| دبوس 16 | PTB5 — Port B bit 5 |
| دبوس 17 | PTB7 — Port B bit 7 |
| دبوس 18 | PTC0 — Port C bit 0 |
| دبوس 19 | PTC1 — Port C bit 1 |
| دبوس 20 | PTC2 — Port C bit 2 |
| دبوس 21 | PTC3 — Port C bit 3 |
| دبوس 22 | PTC4 — Port C bit 4 |
| دبوس 23 | PTC5 — Port C bit 5 |
| دبوس 24 | PTC6 — Port C bit 6 |
| دبوس 25 | PTC7 — Port C bit 7 |
| دبوس 26 | PTD0 — Port D bit 0 / SPI MISO |
| دبوس 27 | PTD1 — Port D bit 1 / SPI MOSI |
| دبوس 28 | PTD2 — Port D bit 2 / SPI SCK |
| دبوس 29 | PTD3 — Port D bit 3 / SPI SS |
| دبوس 30 | PTD4 — Port D bit 4 / SCI TxD |
| دبوس 31 | PTD5 — Port D bit 5 / SCI RxD |
| دبوس 32 | PTD6 — Port D bit 6 |
| دبوس 33 | PTD7 — Port D bit 7 |
| دبوس 34 | USB D- — USB data minus |
| دبوس 35 | USB D+ — USB data plus |
| دبوس 36 | VBUS — USB VBUS sense |
| دبوس 37 | VREG — Voltage regulator output |
| دبوس 38 | VSS — Ground |
| دبوس 39 | VDD — Power supply 2.7-3.6 V |
| دبوس 40 | OSC1 — Crystal oscillator input |
| دبوس 41 | OSC2 — Crystal oscillator output |
| دبوس 42 | RST — Reset (active low) |
| دبوس 43 | IRQ — External interrupt |
| دبوس 44 | TCLK — Timer clock input |
| دبوس 45 | PTE0 — Port E bit 0 |
| دبوس 46 | PTE1 — Port E bit 1 |
| دبوس 47 | PTE2 — Port E bit 2 |
| دبوس 48 | PTE3 — Port E bit 3 |
التطبيقات النموذجية
MC908JW16FAE مناسب لـ 6 التطبيقs: USB HID Keyboard, USB Mouse / Pointer, USB Barcode Scanner, USB Gamepad / Joystick, USB Custom HID Peripheral, Low-Cost USB-to-UART Bridge.
USB HID Keyboard
The MC908JW16FAE is purpose-built for USB keyboard applications. The integrated USB 1.1 full-speed device controller with on-chip 1.5 kohm pull-up eliminates the external PHY, while the 16 KB flash holds the HID boot protocol descriptor plus key debounce firmware; 1.4 KB RAM is sufficient for the keyboard matrix scan buffer. The 12-channel ADC can be repurposed for backlight or capacitive sense inputs, reducing external circuitry. With the SCI available, designers can add a factory test/debug UART without extra pins.
موصى به
USB Mouse / Pointer
For USB mouse and pointer designs, the MC908JW16FAE integrates the USB device controller, an SPI port for an optical sensor interface (e.g., ADNS-3080 or PMW3360), and enough flash/RAM for HID mouse descriptors and motion interpolation. The 8-bit HC08 core executes pointer-fusion algorithms within the 1 ms USB poll interval without offloading to a co-processor. The 12-channel ADC supports side-button analog inputs and battery monitoring on wireless variants.
موصى به
USB Barcode Scanner
The MC908JW16FAE is well suited to handheld USB barcode scanners. The HC08 core decodes 1D barcodes from a CMOS sensor over SPI, while the integrated USB 1.1 device controller presents a HID Keyboard or CDC interface to the host. The 16 KB flash holds symbology tables and decoder firmware; 1.4 KB RAM stores the scan buffer. Low STOP-mode current extends battery life on wireless scanner sleds.
موصى به
USB Gamepad / Joystick
USB gamepads and joysticks leverage the MC908JW16FAE's ADC for analog stick inputs (typically two 10-bit axes) and GPIO for digital buttons. The USB HID device controller enumerates as a gamepad without custom drivers on Windows, Linux, and macOS. The TPM module generates precise PWM rumble/feedback signals if needed; 16 KB flash holds multiple HID report templates.
موصى به
USB Custom HID Peripheral
For proprietary USB HID peripherals such as presentation clickers, custom test instruments, or industrial pendants, the MC908JW16FAE provides flexible GPIOs, an SPI for external peripherals, and the SCI for factory programming. The integrated USB 1.1 device controller handles enumeration; 16 KB flash stores vendor-specific HID reports. The 2.7-3.6 V supply aligns with single-cell Li-ion battery operation.
موصى به
Low-Cost USB-to-UART Bridge
Using the integrated USB 1.1 device controller and the on-chip SCI, the MC908JW16FAE can implement a low-cost USB-to-UART bridge (CDC ACM class). It replaces commercial bridges (CP2104) at lower BOM cost on embedded debug or service ports. The 16 KB flash holds the CDC ACM descriptor and bridge firmware; 1.4 KB RAM buffers 64-byte CDC packets at full-speed USB rates.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ MC908JW16FAE — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | MC908JW32FAE | MC908JB16FAE |
|---|---|---|---|
| Package | 48-pin LQFP | 48-pin LQFP - same | 48-pin LQFP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HC08 8-bit | HC08 8-bit | HC08 8-bit |
| Flash | 16 KB | 32 KB | 16 KB |
| USB | USB 1.1 FS device + internal pull-up | USB 1.1 FS device + internal pull-up | USB 1.1 device, no internal pull-up |
| Operating Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Lifecycle | NRND | NRND | Obsolete |
أبرز الفروقات
- Integrated USB 1.1 device controller with internal pull-up (مقابلMC908JB16FAE)
- Doubled flash at identical pinout (مقابلMC908JW16FAE -> MC908JW32FAE upgrade)
ملاحظات التصميم
Estimated: Keep the USB D+ and D- traces short (<25 mm), length-matched within 2 mm, and routed over a continuous ground plane to maintain 90 ohm differential impedance. Place the 27 ohm series resistors on D+/D- close to the MCU pins. Add a USBLC6-2SC6 TVS array near the USB connector for ESD protection; the internal transceiver has no ESD rating.
Decouple each VDD pin with a 100 nF ceramic capacitor (X7R, 0402) placed within 5 mm. Add a single 4.7 uF bulk capacitor near the VREG pin. The on-chip voltage regulator requires a 1 uF external capacitor on VREG for stability; do not omit this component or the core will reset unpredictably under USB load steps.
Do not connect the internal USB pull-up manually; the JW16 auto-connects D+ pull-up when the USB module is enabled. Forcing an external pull-up to 3.3 V violates the USB spec. When programming flash in-application, ensure the USB module is disabled during the erase/program sequence or the watchdog will reset the part.
معلومات الامتثال
RoHS compliant per LCSC and Rochester Electronics listings. Not AEC-Q100 qualified; consumer-grade part. NRND status confirmed via NXP product lifecycle; last-time-buy recommended for new production.