MC908JW16FAE - 8-bit HC08 MCU with USB, 16KB Flash | NXP
MPN: MC908JW16FAE ✗ Akhir HayatMC908JW16FAE Ringkasan
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.
Pilihan pengganti yang segera untuk MC908JW16FAE — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
Varietas dalam siri ini
Model serupa yang kompatibel dengan pengganti yang segera MC908JW16FAE (sama faktor bentuk dan kaki) — berbeza dalam Maximum Clock Frequency, Operating Supply Voltage, Operating Temperature, Package, Program Memory Size.
MC908JW32FAE
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif rujukan (tidak dalam katalog)
MC908JB16FAE
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak DisahkanHubungi untuk harga
Lihat Datasheet →MC908JW16FAE Penilaian maksimum & Ciri-ciri Elektrik
| Core | HC08 |
| Lebar Bus Data | 8 bit |
| Program Memory Size | 16 KB flash |
| RAM Size | 1.4 KB |
| Frekuensi Klock Maksimum | 8 MHz internal bus |
| Tegangan Pemberi Arus Operasi | 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 |
| Kemasan | 48-pin LQFP |
| Jenis Pemasangan | Surface Mount |
| Suhu Operasi | 0C to +70C |
| Status RoHS | Compliant |
Konfigurasi Pin MC908JW16FAE
| Pin 1 | PTA0 — Port A bit 0 / ADC channel 0 |
| Pin 2 | PTA1 — Port A bit 1 / ADC channel 1 |
| Pin 3 | PTA2 — Port A bit 2 / ADC channel 2 |
| Pin 4 | PTA3 — Port A bit 3 / ADC channel 3 |
| Pin 5 | VSS — Ground |
| Pin 6 | VDD — Power supply 2.7-3.6 V |
| Pin 7 | PTA4 — Port A bit 4 / ADC channel 4 |
| Pin 8 | PTA5 — Port A bit 5 / ADC channel 5 |
| Pin 9 | PTA6 — Port A bit 6 / ADC channel 6 |
| Pin 10 | PTA7 — Port A bit 7 / ADC channel 7 |
| Pin 11 | PTB0 — Port B bit 0 / ADC channel 8 |
| Pin 12 | PTB1 — Port B bit 1 / ADC channel 9 |
| Pin 13 | PTB2 — Port B bit 2 / ADC channel 10 |
| Pin 14 | PTB3 — Port B bit 3 / ADC channel 11 |
| Pin 15 | PTB4 — Port B bit 4 |
| Pin 16 | PTB5 — Port B bit 5 |
| Pin 17 | PTB7 — Port B bit 7 |
| Pin 18 | PTC0 — Port C bit 0 |
| Pin 19 | PTC1 — Port C bit 1 |
| Pin 20 | PTC2 — Port C bit 2 |
| Pin 21 | PTC3 — Port C bit 3 |
| Pin 22 | PTC4 — Port C bit 4 |
| Pin 23 | PTC5 — Port C bit 5 |
| Pin 24 | PTC6 — Port C bit 6 |
| Pin 25 | PTC7 — Port C bit 7 |
| Pin 26 | PTD0 — Port D bit 0 / SPI MISO |
| Pin 27 | PTD1 — Port D bit 1 / SPI MOSI |
| Pin 28 | PTD2 — Port D bit 2 / SPI SCK |
| Pin 29 | PTD3 — Port D bit 3 / SPI SS |
| Pin 30 | PTD4 — Port D bit 4 / SCI TxD |
| Pin 31 | PTD5 — Port D bit 5 / SCI RxD |
| Pin 32 | PTD6 — Port D bit 6 |
| Pin 33 | PTD7 — Port D bit 7 |
| Pin 34 | USB D- — USB data minus |
| Pin 35 | USB D+ — USB data plus |
| Pin 36 | VBUS — USB VBUS sense |
| Pin 37 | VREG — Voltage regulator output |
| Pin 38 | VSS — Ground |
| Pin 39 | VDD — Power supply 2.7-3.6 V |
| Pin 40 | OSC1 — Crystal oscillator input |
| Pin 41 | OSC2 — Crystal oscillator output |
| Pin 42 | RST — Reset (active low) |
| Pin 43 | IRQ — External interrupt |
| Pin 44 | TCLK — Timer clock input |
| Pin 45 | PTE0 — Port E bit 0 |
| Pin 46 | PTE1 — Port E bit 1 |
| Pin 47 | PTE2 — Port E bit 2 |
| Pin 48 | PTE3 — Port E bit 3 |
Aplikasi Biasa
MC908JW16FAE patut untuk 6 aplikasis: 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.
Disebarkan
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.
Disebarkan
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.
Disebarkan
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.
Disebarkan
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.
Disebarkan
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.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk MC908JW16FAE — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | 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 |
Penyeberangsung Jelas
- Integrated USB 1.1 device controller with internal pull-up (vsMC908JB16FAE)
- Doubled flash at identical pinout (vsMC908JW16FAE -> MC908JW32FAE upgrade)
Catatan Desain
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.
Maklumat Kesediaan
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.