MC68HC908QY4MDTE - 8-bit HC08 MCU 4KB Flash 16-TSSOP | NXP
Référence : MC68HC908QY4MDTE ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $8.95 | $8,95 |
| 10 | $8.05 | $80,50 |
| 100 | $7.18 | $718,00 |
| 500 | $6.4 | $3 200,00 |
| 1 000 | $5.72 | $5 720,00 |
MC68HC908QY4MDTE Présentation
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.
Alternatives de remplacement direct pour MC68HC908QY4MDTE — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC68HC908QY4MDTE (même facteur de forme et même empreinte) — différant par Package, Instruction Set, ADC, Connectivity, Core Processor.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC68HC908QY4MDTER
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC9S08QG4CDTE
✅ Remplacement direct✓ En stock
$2.7576 / unité
Voir la fiche technique →MC9S08QG4CDNE
✅ Remplacement direct✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →MC68HC908QY4MDTE Valeurs maximales et caractéristiques électriques
| 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 |
| Boîtier | 16-TSSOP |
| Type de montage | Surface Mount |
| Température de fonctionnement | -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 |
| Statut RoHS | Compliant |
| Terminal Form | Gull Wing |
| Number of Terminals | 16 |
Configuration des broches de MC68HC908QY4MDTE
| Broche 1 | VDD — Positive supply voltage |
| Broche 2 | PTA0/TCLK — GPIO PTA0 or Timer Clock input |
| Broche 3 | PTA1 — GPIO PTA1 |
| Broche 4 | PTA2 — GPIO PTA2 |
| Broche 5 | PTA3 — GPIO PTA3 / ADC input |
| Broche 6 | PTA4 — GPIO PTA4 / ADC input |
| Broche 7 | PTA5 — GPIO PTA5 / ADC input |
| Broche 8 | VSS — Ground |
| Broche 9 | PTB0 — GPIO PTB0 / ADC input |
| Broche 10 | PTB1 — GPIO PTB1 / ADC input |
| Broche 11 | PTB2 — GPIO PTB2 |
| Broche 12 | PTB3 — GPIO PTB3 |
| Broche 13 | PTA6 — GPIO PTA6 |
| Broche 14 | PTA7 — GPIO PTA7 |
| Broche 15 | RESET — External reset input (active low) |
| Broche 16 | IRQ — External interrupt request |
Applications typiques
MC68HC908QY4MDTE convient pour 7 applications: 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.
Recommandé
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).
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68HC908QY4MDTE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Pin-compatible modern successor available for active designs (vs MC9S08QG4CDNE)
- Automotive-grade temperature range on a low-cost 8-bit MCU (vs MC908QY4ACDWE)
- Tape-and-reel quantity break meets high-volume production (vs MC68HC908QY4MDTE (cut-tape base variant))
Notes de conception
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.
Informations de conformité
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.