MC908KX2CPE - 8-Bit HC08 MCU, 8MHz, 2KB Flash | NXP
Référence : MC908KX2CPE ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.95 | $4,95 |
| 10 | $4.45 | $44,50 |
| 100 | $3.95 | $395,00 |
| 500 | $3.55 | $1 775,00 |
| 1 000 | $3.15 | $3 150,00 |
MC908KX2CPE Présentation
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals on one die, executing one instruction on 8-bit data words at a time. Within the embedded systems hierarchy, an MCU sits below 16/32-bit processors in compute capability but above discrete logic, offering a complete, low-cost control solution. The HC08 (M68HC08) family from Motorola/Freescale, now maintained by NXP, is a CISC-architecture 8-bit line widely used in cost-sensitive control applications and still supported for legacy designs through authorized aftermarket channels such as Rochester Electronics.
Key features of the MC908KX2CPE include its 8 MHz internal bus operation, 2KB of in-system programmable Flash memory for field-updatable firmware, operation from either 3.3V or 5V supply rails, and an onboard SCI (Serial Communications Interface) for asynchronous UART communication. The 16-pin dual in-line package with through-hole terminals makes the device ideal for breadboarding, prototyping, and repair of legacy through-hole assemblies.
Technically, the HC08 core implements an enhanced M6805-derived CISC instruction set with indexed addressing modes, a low-power wait mode, and on-chip oscillator options. The KX2 subfamily represents the smallest memory configurations of the KX line, targeting simple control loops, timing supervision, and interface translation tasks where larger flash arrays are unnecessary.
Typical applications include small appliance control, industrial sensor signal conditioning nodes, LED and relay sequencing, battery charger supervision, and replacement MCUs in legacy industrial equipment repairs. The industrial temperature grade of the CPE suffix suits factory-floor environments.
Design consideration: as a mature product, new designs should evaluate current NXP MCUs, but for legacy maintenance the 5V-tolerant through-hole package simplifies drop-in servicing of existing boards.
This page synthesizes distributor stock data, pricing context, lifecycle information, and drop-in alternative analysis not consolidated in the manufacturer datasheet.
Alternatives de remplacement direct pour MC908KX2CPE — 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 MC908KX2CPE (même facteur de forme et même empreinte) — différant par Core Processor, Package, Mounting Type, Program Memory Size, Packaging.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC908KX2CP
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC908KX2CDWE
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$2.29 / unité
Voir la fiche technique →MC908KX2CPE Valeurs maximales et caractéristiques électriques
| Core Processor | HC08 |
| Core Architecture | 8-Bit CISC |
| Core Size | 8-Bit |
| Fréquence d'horloge maximale | 8 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 2KB (2K x 8) |
| Tension d'alimentation | 3.3 V / 5 V |
| Peripherals | SCI |
| Nombre de broches | 16 |
| Boîtier | 16-PDIP |
| Type de montage | Through-Hole |
| Temperature Grade | Industrial |
| Product Family | HC08 |
| Manufacturer Prefix | MC908 (NXP / Freescale Semiconductor) |
| Statut RoHS | unknown |
Guide de configuration des broches du MC908KX2CPE 16-pdip
Configuration des broches du MC908KX2CPE (boîtier 16-pdip). 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 MC908KX2CPE.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MC908KX2CPE convient pour 6 applications: Small Appliance Control, Industrial Sensor Node, Legacy Equipment Repair and Servicing, Battery Charger Supervision, LED and Relay Sequencing, Educational and Prototyping Platforms.
Small Appliance Control
The MC908KX2CPE fits small appliance control boards because its 8 MHz HC08 core, 2KB Flash, and 16-pin PDIP through-hole package cover the exact needs of timer, key-scan, and relay-drive logic in coffee makers, fans, and washers. The dual 3.3V/5V supply range lets the same firmware image serve different power architectures, and the industrial temperature grade tolerates heat near heating elements. With the SCI interface unused or used for diagnostics, the part minimizes BOM cost while the in-system programmable Flash allows last-minute feature updates without changing sockets or masks.
Recommandé
Industrial Sensor Node
In industrial sensor nodes, the MC908KX2CPE pairs its 8-bit HC08 core and 2KB Flash with the SCI interface to condition analog sensor inputs and stream scaled readings over an RS-485/RS-232 link. The industrial temperature grade is essential near machinery, and the 16-PDIP through-hole package survives vibration better than fine-pitch SMD parts while remaining hand-replaceable during line service. Because the flash is in-system programmable, calibration constants and communication parameters can be updated on the production floor without desoldering, cutting maintenance cost in distributed monitoring installations.
Recommandé
Legacy Equipment Repair and Servicing
For repair of legacy HC08-based industrial equipment, the MC908KX2CPE is often the correct replacement because it preserves the original 16-pin PDIP footprint, HC08 instruction set, and 5V signaling of boards designed in the 1990s and 2000s. Through-hole sockets allow quick swaps without hot-air rework, and availability through Rochester Electronics plus independents (5000+ pieces reported across distributors) secures continuity. Firmware can be re-flashed in-system via the SCI-based monitor mode, so repaired boards return to service with identical behavior - something no cross-brand modern MCU can achieve without redesign.
Recommandé
Battery Charger Supervision
Battery charger supervisors benefit from the MC908KX2CPE's 3.3V/5V operation, 2KB Flash for charge-termination state machines, and timer peripherals for trickle/fast-charge sequencing. The 8 MHz HC08 core easily handles ADC polling, LED status indication, and SCI reporting of charge state to a host. Through-hole 16-PDIP mounting simplifies prototype bring-up and small-batch builds of custom chargers, while the industrial grade supports charging stations in unconditioned spaces such as garages and workshops. Flash programmability lets engineers tune termination thresholds after field trials without hardware changes.
Recommandé
LED and Relay Sequencing
Sequencing applications - indicator-light chasers, relay staging, and timing supervision - exploit the MC908KX2CPE's low overhead: the 8 MHz HC08 CISC core executes bit-manipulation instructions efficiently, and 2KB Flash holds generous sequence tables. The 16-pin PDIP provides enough general-purpose port pins for a handful of outputs plus clock and reset, and the 5V rail drives small relays through transistors directly. Industrial temperature rating and through-hole durability make the part reliable in control cabinets, while SCI allows remote sequence reconfiguration where deployed equipment is hard to access.
Recommandé
Educational and Prototyping Platforms
Universities and hobbyists use the MC908KX2CPE for teaching 8-bit embedded fundamentals because the 16-PDIP through-hole package inserts directly into breadboards, the HC08 CISC instruction set is compact and readable in assembly, and 2KB Flash is large enough for meaningful exercises yet small enough to teach memory discipline. Operation at 3.3V or 5V matches both modern and legacy lab benchtop supplies, and the SCI port connects to a PC terminal for UART experiments. Free HC08 assemblers and low-cost MON08 programming hardware keep the complete toolchain accessible to students.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC908KX2CPE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC908KX2CP | MC908KX2CDWE |
|---|---|---|---|
| Package | 16-PDIP | 16-PDIP - same | SOIC-16 (surface mount) |
| Brand | NXP Semiconductors (Freescale) | NXP Semiconductors (Freescale) | NXP Semiconductors (Freescale) |
| Core | HC08 8-bit CISC | HC08 8-bit CISC | HC08 8-bit CISC |
| Max Clock Frequency | 8 MHz | 8 MHz | 8 MHz |
| Flash Memory | 2KB (2K x 8) | 2KB (2K x 8) | 2KB (2K x 8) |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
| Temperature Grade | Industrial | Commercial | Industrial (E suffix) |
| Serial Interface | SCI | SCI | SCI |
Principaux différenciateurs
- Industrial temperature grade in through-hole PDIP (vs MC908KX2CP)
- SMT migration path on the same die (vs MC908KX2CDWE)
- Honest limitation: no cross-brand drop-in exists (vs PIC16F / AT89 8-bit MCUs)
Notes de conception
The MC908KX2CPE is a legacy HC08 part sourced mainly through Rochester Electronics and independent distributors. Before committing to a production run, confirm stock depth and lot date codes: spot-market parts may have mixed date codes or re-marked units. Purchase only from authorized aftermarket channels where traceability matters, and consider a lifetime-buy for long-term service programs supporting installed HC08-based equipment.
The device supports 3.3V and 5V operation, but verify the bus-frequency-versus-voltage operating envelope in the manufacturer datasheet before running 8 MHz at reduced supply. On 5V rails, add 0.1uF ceramic decoupling directly across VDD/VSS at the 16-PDIP socket, and keep reset lines properly pulled up per HC08 family requirements to guarantee clean power-on reset through the monitor-mode entry window.
For through-hole 16-PDIP designs, use a socketed layout for field serviceability in repair scenarios - the primary ongoing use case for this MCU. Keep the SCI (TX/RX) traces short and, for RS-232 links, place the level translator close to the MCU. If migrating to the SOIC-16 MC908KX2CDWE, the surface-mount variant shares pin functions, allowing a common schematic with alternate footprints for dual sourcing of through-hole and SMD builds.
Informations de conformité
Compliance data was not present in the retrieved distributor listings. As a legacy PDIP device, older date codes may not be RoHS compliant - verify with the supplier before ordering for RoHS-restricted markets.
