MC68HC908QY2CDTE - 8-Bit 8MHz 1.5KB Flash MCU | NXP
Référence : MC68HC908QY2CDTE ✗ Fin de vie| Qté | Prix unitaire | Total |
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MC68HC908QY2CDTE Présentation
A microcontroller is a programmable system-on-chip that combines a processor core, nonvolatile program memory, data memory, I/O ports and embedded peripherals in one package. In the broader semiconductor hierarchy, the MC68HC908QY2CDTE is an MCU, then an embedded processor, then a semiconductor. Its HC08Q architecture targets applications where an 8-bit control engine, modest memory and integrated analog or timing functions are more appropriate than a higher-cost application processor.
Key verified features include 8-bit processing, 8 MHz operation, 1.5 KB of Flash program memory and 128 bytes of RAM. The integrated ADC supports measurements without a separate converter, while PWM, low-voltage detection and power-on reset reduce external circuitry. Its 16-TSSOP package is substantially more compact than larger leaded packages, although the exact pin functions and exposed pad details require confirmation from the official datasheet before layout release.
The M68HC08 family uses the enhanced CPU08 central processor and a Von Neumann memory organization. One retrieved product description identifies a 4.5 V to 5.5 V supply range and industrial operating class, while another distributor result lists 40 I/O ports; this conflicts with the 16-pin package and the separate 13-I/O result. The package-pin limitation makes 13 I/O the physically plausible figure, but the conflicting listing is retained as an uncertainty rather than resolved without official documentation.
Typical uses include compact industrial controllers, simple sensor-conditioning systems, keypad interfaces, motor or valve-control sequencers and small battery-operated instruments. The ADC is useful when a design must digitize an analog sensor signal, while PWM can support actuator, lighting or motor-control functions. The 1.5 KB Flash capacity makes firmware size and table placement central design constraints.
For new designs, verify lifecycle status, clock, memory, ADC characteristics, pin multiplexing and absolute maximum ratings against the current NXP datasheet. Because the product page states End of Life and a distributor result states Not For New Designs, production use should receive an availability and obsolescence review. Do not infer that a similarly named MC908 or MC68HC908 device is a drop-in replacement without checking its complete pinout and electrical specification.
Alternatives de remplacement direct pour MC68HC908QY2CDTE — 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 MC68HC908QY2CDTE (même facteur de forme et même empreinte) — différant par ADC, Core Processor, Package, Program Memory Size, RAM Size.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesMC68HC908QY2CDTE Valeurs maximales et caractéristiques électriques
| Product Type | 8-bit microcontroller |
| Product Series | HC08 / M68HC08 family |
| Core Processor | Enhanced CPU08 |
| Core Size | 8-bit |
| Architecture | CISC with Von Neumann architecture |
| Maximum Clock Speed | 8 MHz |
| Alternate Clock Value Reported | 16 MHz |
| Program Memory Size | 1.5 KB (1.5K x 8) |
| Program Memory Type | Flash |
| RAM Size | 128 x 8 bits |
| Number of I/O | 13 |
| Conflicting I/O Count | 40 reported by one third-party listing |
| Tension d'alimentation | 4.5 V to 5.5 V |
| ADC | Integrated ADC |
| PWM | Integrated PWM |
| Low-Voltage Detection | Integrated LVD |
| Power-On Reset | Integrated POR |
| Operating Range | Industrial |
| Boîtier | 16-TSSOP |
| Type de montage | Surface mount |
| Lifecycle Signal | End of Life |
Guide de configuration des broches du MC68HC908QY2CDTE 16-tssop
Configuration des broches du MC68HC908QY2CDTE (boîtier 16-tssop). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour MC68HC908QY2CDTE.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MC68HC908QY2CDTE convient pour 6 applications: Compact Industrial Sensor Interface, Simple Motor or Valve Sequencer, Keypad and Discrete Input Panel, Legacy Equipment Controller, Battery-Operated Instrument, Fixed-Function Control Subsystem.
Compact Industrial Sensor Interface
The MC68HC908QY2CDTE fits a small analog-measurement module because it combines an 8-bit CPU08, 1.5 KB of Flash, 128 bytes of RAM and an integrated ADC. The device can acquire a sensor signal, apply calibration constants and report a simplified status without a separate processor. Its reported 4.5 V to 5.5 V range also suits a 5 V industrial control rail. The primary constraint is memory: code, calibration tables and stack must fit together, and the unverified ADC conversion rate must be checked in the official datasheet before setting the sampling plan.
Recommandé
Simple Motor or Valve Sequencer
The integrated PWM output makes the MC68HC908QY2CDTE suitable for a compact sequencing controller that steps a small motor, valve or relay actuator from a simple state machine. An 8 MHz 8-bit CPU can coordinate discrete commands while the 1.5 KB Flash budget holds a short routine and lookup table. External transistors or drivers are still required because the MCU cannot directly power a motor. Verify PWM frequency, polarity and current-limit behavior against the official documentation before connecting an inductive load.
Recommandé
Keypad and Discrete Input Panel
The MC68HC908QY2CDTE can serve as the controller for a compact keypad, selector panel or discrete-input module where the required function is limited to debouncing, state tracking and output control. Its 13 reported I/O pins provide a modest interface budget, while the 128-byte RAM can hold current state and a short scan buffer. Designers should use a matrix only if the exact pin multiplexing and electrical limits allow it, and should avoid adding communication code that could exceed the constrained 1.5 KB program memory.
Recommandé
Legacy Equipment Controller
This MCU is most compelling in equipment that already uses the CPU08 instruction set, peripheral arrangement or 16-TSSOP footprint. A maintenance redesign can preserve the board and much of the firmware while using the same 1.5 KB Flash and 128-byte RAM assumptions, reducing the risk of introducing unrelated hardware changes. The End of Life status means the legacy advantage must be balanced against limited future sourcing. A production-equivalence test should cover reset behavior, ADC calibration, timing and all peripheral states before approving continued use.
Recommandé
Battery-Operated Instrument
The MC68HC908QY2CDTE can support a small battery-operated instrument when the product operates from a regulated 5 V rail and requires only a short control routine. Power-on reset and low-voltage detection support basic system supervision, while the ADC can process a scaled battery or sensor voltage. The 1.5 KB Flash limit strongly favors shallow sleep and compact firmware. Low-voltage detection behavior, sleep current and analog accuracy are not present in the supplied data, so they must be measured or obtained from the manufacturer before predicting battery life.
Recommandé
Fixed-Function Control Subsystem
A dedicated pump controller, timer, mode selector or appliance submodule can use the CPU08 to execute deterministic control logic without a large operating system. The integrated PWM, POR and LVD reduce the need for separate support functions, and the 16-TSSOP package supports compact board construction. Firmware must remain small and interrupt-safe, while watchdog, reset-pin and brownout behavior must be confirmed from official documentation. This use case is best suited to maintenance and replication programs rather than unrestricted new-product development.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68HC908QY2CDTE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Notes de conception
Resolve the 8 MHz versus 16 MHz source conflict before compiling timing-sensitive code. The DigiKey result explicitly lists 8 MHz, while a third-party page lists 16 MHz; treating the larger value as authoritative could cause baud-rate, timer or bus-timing errors. Use the selected bus clock, oscillator configuration and peripheral prescalers from the current NXP datasheet, then validate them with timing measurements on production hardware.
Design the board for a nominal 5 V rail because the reported operating range is 4.5 V to 5.5 V. Check every I/O pin's input threshold and output-drive capability against the actual VDD before connecting a 5 V peripheral. Place the MCU's required bypass capacitor at the supply pins with a short return path; the exact capacitance and layout requirements are not available in the supplied data and must come from the official electrical-characteristics and application guidance.
Keep the 16-TSSOP footprint conversion uncomplicated by matching the official pin numbering and exposed thermal-pad requirements exactly. Do not infer pin functions from a similarly named MC908 device because the supplied comparison results do not prove compatibility. Reserve clearance around the package, route oscillator and reset signals away from noisy switching nodes, and verify land pattern, paste and assembly parameters against the current package drawing before fabrication.
Budget 1.5 KB of Flash and 128 bytes of RAM conservatively. Include the vector table, startup code, constants, stack, drivers and application logic in the memory map, and avoid relying on a linker result that has not been checked against the actual part variant. A migration to a larger MCU can change peripheral behavior and memory addressing even when the software source appears reusable, so perform hardware-in-the-loop regression tests.
Informations de conformité
The supplied search results do not provide verified compliance statements. No RoHS, REACH, AEC-Q100, lead-free, halogen-free or conflict-minerals claim is inferred from the manufacturer name or package type.