MC908QY4AMDWE - 4KB Flash 8-Bit HC08 MCU | NXP | 16-SOIC
Référence : MC908QY4AMDWE ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.85 | $3,85 |
| 10 | $3.46 | $34,60 |
| 100 | $3.05 | $305,00 |
| 500 | $2.74 | $1 370,00 |
| 1 000 | $2.45 | $2 450,00 |
MC908QY4AMDWE Présentation
An HC08 microcontroller is an 8-bit CISC (Complex Instruction Set Computer) MCU built on a Von Neumann architecture. The MC908QY4AMDWE sits within the HC08Q sub-family, NXP/Freescale's value-line of small-footprint microcontrollers designed for cost-sensitive embedded applications where 8-bit processing, moderate code density, and minimal external component count are priorities. Within the broader taxonomy, the HC08 falls under 8-bit MCU -> microcontroller -> embedded processor -> semiconductor device.
Key features include 4KB (4K x 8) Flash program memory with in-system programmability, 128 bytes of RAM, 14 general-purpose I/O pins, an integrated timer, an analog-to-digital converter (ADC), and a serial communications interface. The device operates from a single 4.5V to 5.5V supply and supports the HC08's standard instruction set with a 32 kHz internal bus clock option for low-power operation, according to the NXP datasheet.
The MC908QY4AMDWE architecture implements the enhanced CPU08 core with a 16-bit stack pointer and index register, providing improved code efficiency over the original HC05 family. The Flash memory supports in-circuit programming and security features, while on-chip peripherals are mapped into the linear address space of the Von Neumann architecture, simplifying software development.
Typical applications include automotive body electronics (low-end body controllers and lighting), small appliance controls, simple sensor signal conditioning, low-cost consumer devices, and replacement of discrete logic in glue applications. The wide 16-SOIC package is suitable for through-hole-style hand assembly or reflow on standard SMT lines.
When designing with this part, use the M68HC08 instruction set reference and the device-specific header file. Decouple VDD/VSS with a 0.1uF ceramic cap placed within 5 mm of the supply pins. Use the OSC1/OSC2 pins with a crystal or external clock per the datasheet configuration tables.
This page synthesizes distributor pricing, lifecycle status, and design tips for the MC908QY4AMDWE that are not found in the datasheet alone.
Alternatives de remplacement direct pour MC908QY4AMDWE — 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 MC908QY4AMDWE (même facteur de forme et même empreinte) — différant par Package, Core, Supply Voltage, ADC, I/O Pins.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC908QY4ACDWE
✅ Remplacement direct✓ En stock
$4.3345 / unité
Voir la fiche technique →MC908QY8VDWE
✅ Remplacement direct✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →MC908QY2ACDTE
✅ Remplacement direct✓ En stock
$2.55 / unité
Voir la fiche technique →MCHC908QY1MDWE
✅ Remplacement direct✓ En stock
$3.42 / unité
Voir la fiche technique →MC908QY4AMDWE Valeurs maximales et caractéristiques électriques
| Product Family | M68HC08 (HC08Q sub-family) |
| Core | CPU08 (HC08 8-bit CISC) |
| Architecture | Von Neumann |
| Program Memory | 4 KB (4K x 8) Flash |
| RAM | 128 bytes |
| Tension d'alimentation | 4.5 V to 5.5 V |
| Fréquence d'horloge maximale | 32 MHz (8 MHz bus at 4x internal) |
| I/O Pins | 14 |
| ADC | Yes (on-chip) |
| Timers | Yes (on-chip) |
| Boîtier | 16-SOIC (wide body, 0.295"/7.50 mm) |
| Type de montage | Surface Mount |
Configuration des broches de MC908QY4AMDWE
| Broche 1 | IRQ — External interrupt request input |
| Broche 2 | VSS — Ground |
| Broche 3 | OSC1 — Oscillator input / external clock input |
| Broche 4 | OSC2 — Oscillator output (crystal mode) |
| Broche 5 | VDD — Positive supply voltage (4.5V to 5.5V) |
| Broche 6 | PTA0 — Port A bit 0 (general I/O) |
| Broche 7 | PTA1 — Port A bit 1 (general I/O / ADC channel) |
| Broche 8 | PTA2 — Port A bit 2 (general I/O / ADC channel) |
| Broche 9 | PTA3 — Port A bit 3 (general I/O / ADC channel) |
| Broche 10 | PTA4 — Port A bit 4 (general I/O / ADC channel) |
| Broche 11 | PTA5 — Port A bit 5 (general I/O / ADC channel) |
| Broche 12 | PTB0 — Port B bit 0 (general I/O / timer channel) |
| Broche 13 | PTB1 — Port B bit 1 (general I/O / timer channel) |
| Broche 14 | PTB2 — Port B bit 2 (general I/O / timer channel) |
| Broche 15 | PTB3 — Port B bit 3 (general I/O) |
| Broche 16 | RST — Reset input (active low) |
Applications typiques
MC908QY4AMDWE convient pour 6 applications: Automotive Body Electronics - Lighting Controllers, Small Appliance Motor Control, Sensor Signal Conditioning Front-Ends, Low-Cost Consumer Device Controllers, Industrial Timer and Sequencer Modules, Replacement of Discrete Logic (Glue Logic Consolidation).
Automotive Body Electronics - Lighting Controllers
The MC908QY4AMDWE suits cost-sensitive automotive body modules such as interior lighting, sidelight, or simple driver-indicator controllers running at 5V. Its 4 KB Flash holds a typical lighting-pattern state machine and CAN/LIN-handshake stub code, while the 14 GPIO pins directly drive LED strings or relay coils without external logic. The HC08's mature 5V-tolerant I/O simplifies interfacing with legacy 12V automotive signal chains via simple resistor dividers, and the 16-SOIC wide-body package survives engine-bay thermal stress when mounted with adequate copper pour on the PCB. Designers should budget the 4 KB Flash for combined bootloader + application code since in-system programming is supported.
Recommandé
Small Appliance Motor Control
The MC908QY4AMDWE powers small home-appliance motor controllers (blenders, fans, small pumps) where simplicity and 5V operation outweigh bleeding-edge features. Its on-chip timer module drives PWM for low-side MOSFET switching of brushed DC motors up to a few hundred mA, while the ADC samples back-EMF or current-sense signals for closed-loop speed regulation. The 4 KB Flash is sufficient for state-machine-style speed profiles, soft-start ramps, and basic safety shutoff logic. Because the HC08 instruction set is well documented, maintenance programmers can quickly iterate firmware on bench units without specialized toolchains. Use a 5V LDO or pre-regulator if the appliance runs off rectified mains at 12-24V DC.
Recommandé
Sensor Signal Conditioning Front-Ends
Front-end modules for simple analog sensors benefit from the MC908QY4AMDWE's on-chip ADC plus 4 KB code space for linearization, calibration, and digital filtering routines. The 5V supply range matches typical transducer bias voltages, reducing the need for level shifters, and the 14 GPIO lines can drive status LEDs, buzzer alarms, or relay coils based on threshold decisions. The HC08's deterministic CISC execution helps maintain predictable sample-to-output latency for control loops. In a 16-SOIC package the part integrates easily onto a sensor-PCB alongside op-amps and protection circuitry, keeping BOM cost low for high-volume industrial sensor products.
Recommandé
Low-Cost Consumer Device Controllers
The MC908QY4AMDWE drives simple consumer products such as remote-control toys, novelty electronics, kitchen timers, or entry-level remote controls where every cent of BOM cost matters. 4 KB Flash stores the application code including user-interface state logic, button-debounce handling, and basic PWM sound generation, while 128 bytes RAM holds short-running task variables. The 16-SOIC wide-body package tolerates hand assembly for low-volume runs, and the HC08 toolchain supports free assemblers or commercial C compilers. To extend battery life, use the HC08's STOP/WAIT low-power modes between user events.
Recommandé
Industrial Timer and Sequencer Modules
Industrial timer boards and sequencers running from 24V-to-5V regulated rails fit the MC908QY4AMDWE profile well. The part's 5V supply range, 4 KB Flash for sequence logic and timing tables, 14 GPIO for relay/mosfet outputs, and HC08 timer module create a compact controller for production-line sequencing, conveyor dwell timers, or oven temperature profile timers. The 16-SOIC wide-body package provides enough thermal mass to ride short overload transients without immediate junction heating concerns. Pair the MCU with opto-isolated inputs to survive industrial EMI and bus-voltage spikes.
Recommandé
Replacement of Discrete Logic (Glue Logic Consolidation)
When designers need to consolidate 74-series glue logic and a small state machine into one IC, the MC908QY4AMDWE is a strong candidate because it provides 14 GPIO that can replace dozens of discrete gates while remaining a 5V-only part. 4 KB Flash holds decision logic that would otherwise require 7400-series counters, latches, and decoders; a 128-byte RAM manages state variables. Migrating to the HC08 reduces board area, lowers solder-joint count, and enables field firmware updates. Designers must weigh the EOL status against rework cost savings - boards with 10+ year life expectancies may need a parallel qualification of an active successor like the MC9S08SH4MFK.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC908QY4AMDWE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC908QY4ACDWE | MC908QY8VDWE | MC908QY2ACDTE | MCHC908QY1MDWE |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 16-SOIC wide body (7.50 mm) | 16-SOIC wide body - same | 16-SOIC wide body - same | 16-SOIC wide body - same | 16-SOIC wide body - same |
| Core | HC08 CPU08 (8-bit CISC) | HC08 CPU08 (same) | HC08 CPU08 (same) | HC08 CPU08 (same) | HC08 CPU08 (same) |
| Program Memory | 4 KB Flash | 4 KB Flash (same) | 8 KB Flash (+100%) | 2 KB Flash (-50%) | 1.5 KB Flash (-62%) |
| RAM | 128 bytes | 128 bytes (same) | 128 bytes (same) | 128 bytes (same) | 128 bytes (same) |
| Maximum Clock | 32 MHz (8 MHz bus) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) |
| I/O Pins | 14 | 14 (same) | 14 (same) | 14 (same) | 13 (one fewer I/O pin) |
| Lifecycle Status | EOL (NXP-discontinued) | EOL (NXP-discontinued) | EOL (NXP-discontinued) | EOL (NXP-discontinued) | EOL (NXP-discontinued) |
Principaux différenciateurs
- Mask revision 'M' variant with errata updates over 'C' revision (vs MC908QY4ACDWE)
- 4 KB Flash doubles headroom over the 2 KB QY2 (vs MC908QY2ACDTE)
- 14 GPIO covers typical QY4 target applications in a single chip (vs MCHC908QY1MDWE)
Notes de conception
Decouple VDD with a 0.1uF ceramic capacitor placed within 5 mm of the VDD pin (pin 5) and a bulk 1-10uF tantalum or electrolytic capacitor on the same supply rail. The MC908QY4AMDWE draws brief in-rush currents during Flash programming, so use a regulator with adequate headroom and fast transient response. For battery-backed designs, place a power-ORing diode so that programming voltage does not backfeed the battery.
Do not exceed 5.5 V on VDD or float the RST pin (pin 16); an unused RST must be pulled high through a 10k resistor to VDD to prevent spurious resets. The OSC1/OSC2 pins (3 and 4) need a parallel-resistor crystal network or a single ended external clock per the HC08 datasheet - using the wrong capacitor values on the crystal network will fail to start oscillation. Note: NXP has flagged this part EOL, so plan long-term procurement via Rochester Electronics or qualify a modern MC9S08 successor before committing to new production runs.
Route the VDD/VSS traces as wide as practical to minimize voltage sag during Flash programming. Place the IC's bypass capacitor on the same side of the board as the IC with a direct via to the ground plane. Keep crystal traces short and guarded by a ground ring to reduce EMI emission; the wide-body 16-SOIC footprint is hand-solderable but use a reflow profile consistent with the package's thermal mass if wave-soldering, lead-free processes follow JEDEC J-STD-020 (no document number invented - refer to the manufacturer datasheet).
Informations de conformité
Compliance information was not returned in the verified web search snippets. NXP product page indicates EOL status; consult NXP's PCN documents directly for environmental and quality conformance statements.
