MC68HC908QY4MDTE - 8-bit HC08 MCU 4KB Flash 16-TSSOP | NXP
MPN: MC68HC908QY4MDTE ✗ Cuối đờiMC68HC908QY4MDTE Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (RAM and non-volatile program memory), and peripherals on a single die, designed for embedded control tasks where deterministic behavior and low cost are primary requirements. The M68HC08 architecture uses a CISC (Complex Instruction Set Computer) Von Neumann model with a shared program/data address space, optimized for byte-level operations and high code density. Within the broader taxonomy, 8-bit MCUs sit below 16-bit MCUs (e.g., HC12) and 32-bit MCUs (e.g., ARM Cortex-M) in processing throughput but are favored for cost-sensitive, low-power, and safety-critical applications such as appliance control, body electronics, and sensor interfacing.
Key features of the MC68HC908QY4MDTE include an 8 MHz maximum internal bus frequency, 4KB (4K x 8) of FLASH program memory with EEPROM emulation, 128 bytes of RAM, an on-chip ADC for analog signal acquisition, 13 bidirectional I/O lines, and a robust peripheral set with LVD, POR, and PWM. The -40C to +125C operating temperature range and automotive-grade qualification make the part especially well-suited to body and chassis electronics in vehicles.
The device integrates the enhanced CPU08 central processor, a FLASH memory controller supporting in-application programming, and a 4-channel 8-bit successive-approximation ADC. The integrated oscillator and flexible clock modes reduce external component count, while the on-chip LVD and POR circuitry simplify brown-out and power-up sequencing. The QY package family (16-pin TSSOP) trades a wider pin pitch for a compact footprint compatible with hand-soldered prototypes and high-density production boards alike.
Typical applications include automotive body controllers, HVAC damper actuators, instrument cluster sub-modules, sensor signal conditioning, low-end motor control loops, and white-goods / appliance controllers. In safety-critical systems, the HC08's deterministic interrupt latency and watchdog timer support ASIL-classified tasks in body and convenience subsystems.
When designing with this device, observe the flash endurance spec of 1,000 program/erase cycles minimum (or use the 4 ms page erase specification for longer reliability) and reserve adequate decoupling on the VDD/VSS pair. The CPU08 instruction set is binary-compatible across the HC08 family, easing code migration to QY4A, QY2A, or QT4A variants for cost-down or pin-out redesigns without firmware rewrites.
This page synthesizes distributor pricing, drop-in TSSOP-16 alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho MC68HC908QY4MDTE — 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 MC68HC908QY4MDTE (cùng hình factor và footprint) — khác nhau ở Package, Instruction Set, ADC, Connectivity, Core Processor.
MC68HC908QY4MDTER
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S08QG4CDTE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S08QG4CDNE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC68HC908QY4MDTE Tỷ lệ tối đa & tính chất điện
| Core Processor | HC08 / CPU08 |
| Core Size | 8-bit |
| Maximum Clock Speed | 8 MHz (internal bus) |
| Program Memory Size | 4 KB (4K x 8) FLASH |
| RAM Size | 128 x 8 (128 bytes) |
| EEPROM Size | EEPROM emulation in FLASH |
| Number of I/O Pins | 13 |
| Hộp | 16-TSSOP |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 C to +125 C |
| Temperature Grade | Automotive |
| Peripherals | LVD, POR, PWM, ADC |
| Connectivity | None (standalone MCU) |
| ADC | On-chip analog-to-digital converter |
| Instruction Set | CISC, Von Neumann architecture |
| Trạng thái RoHS | Compliant |
| Terminal Form | Gull Wing |
| Number of Terminals | 16 |
Cấu hình chân MC68HC908QY4MDTE
| Chân 1 | VDD — Positive supply voltage |
| Chân 2 | PTA0/TCLK — GPIO PTA0 or Timer Clock input |
| Chân 3 | PTA1 — GPIO PTA1 |
| Chân 4 | PTA2 — GPIO PTA2 |
| Chân 5 | PTA3 — GPIO PTA3 / ADC input |
| Chân 6 | PTA4 — GPIO PTA4 / ADC input |
| Chân 7 | PTA5 — GPIO PTA5 / ADC input |
| Chân 8 | VSS — Ground |
| Chân 9 | PTB0 — GPIO PTB0 / ADC input |
| Chân 10 | PTB1 — GPIO PTB1 / ADC input |
| Chân 11 | PTB2 — GPIO PTB2 |
| Chân 12 | PTB3 — GPIO PTB3 |
| Chân 13 | PTA6 — GPIO PTA6 |
| Chân 14 | PTA7 — GPIO PTA7 |
| Chân 15 | RESET — External reset input (active low) |
| Chân 16 | IRQ — External interrupt request |
Ứng dụng tiêu biểu
MC68HC908QY4MDTE phù hợp cho 7 Áp dụngs: Automotive Body Control Modules, Industrial Sensor Signal Conditioning, Appliance and White Goods Controllers, Low-End Motor Control (DC Brushed), Instrument Cluster Sub-Modules, Consumer Electronics UI Boards, Industrial Lighting Controllers (LED Drivers).
Automotive Body Control Modules
The MC68HC908QY4MDTE's -40 C to +125 C automotive temperature rating and 13 GPIO pins make it well-suited to body control modules (BCMs) that handle door locks, lighting relays, and accessory switching. Its 8 MHz CPU08 core provides deterministic interrupt latency for CAN-compatible LIN slaves and seat/lighting tasks where predictable response within 100 us matters; the on-chip PWM (up to 2 channels) drives LED dimming and small motor slew controls at up to 125 C ambient, while the 4 KB FLASH plus EEPROM emulation holds calibration tables and a small bootloader.
Được đề xuất
Industrial Sensor Signal Conditioning
With its on-chip 8-bit ADC and LVD/POR circuitry, the MC68HC908QY4MDTE is ideal for cost-sensitive industrial sensors that digitize thermistor, pressure, or 4-20 mA loop signals. The 8 MHz bus handles up to 8 kS/s sampling with a moving-average filter entirely in firmware, while 128 bytes of RAM buffers the most recent samples before linearization; the 16-TSSOP package eases hand-soldered prototype bring-up, and the HC08 instruction set keeps math code compact (typical sensor algorithms fit in 2 KB of the 4 KB flash).
Được đề xuất
Appliance and White Goods Controllers
Washing machines, dishwashers, and HVAC blower controllers leverage the MC68HC908QY4MDTE for motor PWM and user-interface I/O. The PWM module drives TRIAC phase-control or low-side MOSFET switching for triac-based load modulation while remaining deterministic under interrupt load; integrated LVD and POR avoid external reset hardware, saving bill-of-materials cost in a price-aggressive appliance market. With 4 KB flash the device runs main-washer state machines, sensor-oversampling, and small UI key-handlers without external memory.
Được đề xuất
Low-End Motor Control (DC Brushed)
Brushed-DC motor controllers in fans, pumps, and small actuators benefit from the MC68HC908QY4MDTE's integrated PWM and 13 GPIO pins. The PWM module generates variable-duty drive at frequencies up to bus/2, while the ADC samples back-EMF or current-sense signals at 8 kS/s for closed-loop speed regulation; the wide -40 C to +125 C operating range handles under-dash or engine-bay motor housing environments; total BOM, including the MCU plus a half-bridge driver, typically fits under 1 square inch.
Được đề xuất
Instrument Cluster Sub-Modules
Sub-modules of an automotive instrument cluster such as telltale lamp drivers, turn-signal flasher timers, and warning-tone generators rely on the MC68HC908QY4MDTE for its HC08 deterministic interrupt response and automotive grade. The ADC reads switched-mode power-supply voltage for diagnostic reporting, the PWM module tones the piezo buzzer for seatbelt and key-in reminders, and GPIO bits drive the telltale LEDs; with the 125 C thermal rating it sits directly behind the cluster housing in the sun-loaded dashboard.
Được đề xuất
Consumer Electronics UI Boards
Remote controls, low-cost toys, and small consumer devices use the MC68HC908QY4MDTE for cost-driven UI and tactile-button debounce tasks. The 13 GPIO pins easily handle 4x4 key matrices plus IR-LED drive, while the 8 MHz core scans a 16-key matrix at under 5 ms latency; the 4 KB flash stores protocol stacks like SIRC, RC5, or proprietary RF OOK; the small 16-TSSOP footprint and low cost help consumer products hit aggressive BOM targets of $0.30-0.50 for the entire control board.
Được đề xuất
Industrial Lighting Controllers (LED Drivers)
The MC68HC908QY4MDTE's on-chip PWM and -40 C to +125 C range suit it to industrial-grade LED driver controllers that manage dimming, color-mixing, or flicker-free constant-current regulation. The PWM module produces 8-bit dimming duty cycles at 1 kHz to 50 kHz, suitable for analog dimming and digital direct-drive; the ADC reads temperature, LED forward voltage, and supply rails for closed-loop optical feedback; the wide temperature range and automotive grade mean it survives under-cabinet, warehouse, and outdoor industrial lighting.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC68HC908QY4MDTE — 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 | MC68HC908QY4MDTER | MC908QY4ACDWE | MC9S08QG4CDTE | MC9S08QG4CDNE |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 16-TSSOP | 16-TSSOP - same | 16-SOIC - different footprint | 16-TSSOP - same | 16-TSSOP - same |
| Core | HC08 (CPU08) | HC08 (CPU08) | HC08 (CPU08) | S08 | S08 |
| Max Clock | 8 MHz | 8 MHz | 8 MHz | 16 MHz / 20 MHz | 16 MHz / 20 MHz |
| Program Memory | 4 KB FLASH | 4 KB FLASH | 4 KB FLASH | 4 KB FLASH | 4 KB FLASH |
| RAM | 128 bytes | 128 bytes | 128 bytes | 256 bytes | 256 bytes |
| GPIO Count | 13 | 13 | 13 | 12 | 12 |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C |
| Lifecycle Status | NRND | NRND | Obsolete | Active | Active |
Bảo phân biệt quan trọng
- Pin-compatible modern successor available for active designs (vsMC9S08QG4CDNE)
- Automotive-grade temperature range on a low-cost 8-bit MCU (vsMC908QY4ACDWE)
- Tape-and-reel quantity break meets high-volume production (vsMC68HC908QY4MDTE (cut-tape base variant))
Ghi chú thiết kế
Place a 100 nF decoupling capacitor as close as practical to the VDD/VSS pins (1 and 8) to suppress switching transients during FLASH programming and PWM toggling. For automotive applications with supply transients per ISO 7637, add a 4.7-10 uF bulk capacitor near the package and a series ferrite or PTC to attenuate load-dump spikes. The integrated LVD/POR circuitry will hold the part in reset until VDD crosses the LVD threshold, but bulk decoupling of the supply rail is still required to ride out module-level cranking pulses.
Route the RESET line with care - this is an active-low bidirectional pin and is sensitive to noise. Place a 10 kohm pull-up to VDD and a 1 nF-100 nF cap to ground to debounce mechanical reset switches, plus a Schottky diode to VDD to clamp ESD events. For TSSOP-16 hand-soldered prototypes, use a 0.5 mm tip and low-melt solder; for production, follow JEDEC J-STD-020 MSL handling for the dry-pack and bake if exposure exceeds the floor-life.
Although the MC68HC908QY4MDTE draws minimal quiescent current (single-digit mA during active 8 MHz operation and < 10 uA in stop mode), the TSSOP-16 package still requires thermal relief in environments above +85 C ambient. Estimated: at +125 C ambient and 5 mA active supply current at 5 V (25 mW dissipation), the junction-to-air thermal rise is well under 1 C given the package's 150 C/W theta_JA - no heatsink is required, but PCB copper pours around VDD/VSS pins help distribute heat in stacked assemblies.
Do not attempt to program the FLASH with VDD below the LVD threshold; the write sequence will be silently aborted and may corrupt adjacent bytes. According to the NXP datasheet, the standard erase specification is 1000 program/erase cycles minimum - for higher endurance use the 4 ms page erase specification instead of the default timing. Also, avoid floating analog inputs when the ADC is enabled - tie unused ADC channels to midrail or VSS to prevent excess bias current in the sample-and-hold capacitor.
When using the on-chip oscillator, keep the OSC traces short and surround them with a ground ring to minimize radiated emissions. If using an external crystal, place the crystal as close to the OSC pins as possible, with traces matched to within 5 mm to keep duty-cycle distortion low. Avoid running PWM or high-speed digital signals parallel to the analog ADC inputs to prevent digital-coupling noise from degrading ADC accuracy - if routing must cross, do so at right angles and isolate with ground.
Thông tin tuân thủ
RoHS compliant per NXP product page and DigiKey listings. Automotive-grade (-40 C to +125 C) qualification per the MD suffix ordering code. Reach SVHC declaration referenced via NXP product compliance page.