MC908EY8AVFJE - 8KB Flash 8MHz HC08 MCU 32-LQFP | NXP
Référence : MC908EY8AVFJE ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.92 | $6,92 |
| 10 | $6.1 | $61,00 |
| 100 | $5.38 | $538,00 |
| 500 | $4.85 | $2 425,00 |
| 1 000 | $4.32 | $4 320,00 |
MC908EY8AVFJE Présentation
An HC08 microcontroller is a member of the M68HC08 8-bit CISC family that evolved from the original Motorola 6800 architecture. The HC08 line combined with on-chip Flash memory, multiple timers, ADC, and serial communication peripherals built a self-contained embedded controller class aimed at appliance, body electronics, and motor-control applications. The MC908EY8AVFJE occupies a specific position in the family: it is one of the lowest-cost LIN/IO variants within the EY sub-family, with reduced Flash (8KB vs 16KB in EY16) and a lower pin count to match a stripped-down analog and digital peripheral set.
Key features include 8KB Flash program memory, 512 bytes SRAM, 24 general-purpose I/O lines (shared with peripheral functions), one 16-bit two-channel timer with PWM, an 8-channel 8-bit ADC, an SCI (UART) and SPI interface, an internal oscillator with watchdog timer, and operating voltage from 2.5V to 5.5V. The 32-pin LQFP package is automotive-friendly and supports both consumer and industrial temperature grades.
The MC908EY8AVFJE is targeted at body-control modules, low-end HVAC controls, sensor interfaces, and any cost-sensitive 8-bit LIN slave node. Designers select this part when cost per node is the primary constraint and the application does not require the larger Flash footprint of the EY16A variant. The 32-LQFP footprint allows hand-repair-friendly prototyping while remaining compatible with high-volume SMT assembly.
Alternatives de remplacement direct pour MC908EY8AVFJE — 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 MC908EY8AVFJE (même facteur de forme et même empreinte) — différant par Operating Temperature, Peripherals, Program Memory Size, Supply Voltage.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC908EY8AVFJE-Q1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC908EY8CFAE
✅ Remplacement direct✓ En stock
$4.61 / unité
Voir la fiche technique →MC908EY8AVFJR2
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC908EY8AMFJE
✅ Remplacement direct✓ En stock
$7.1 / unité
Voir la fiche technique →MC908EY8AVFJ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC908EY8AVFJE Valeurs maximales et caractéristiques électriques
| Core | HC08 |
| Core Size | 8-bit |
| Fréquence d'horloge maximale | 8 MHz |
| Program Memory Size | 8 KB (8K x 8) Flash |
| RAM Size | 512 x 8 (512 bytes) |
| EEPROM Size | Not specified |
| Number of I/O Pins | 24 |
| Boîtier | 32-LQFP (7x7 mm) |
| Type de montage | Surface Mount |
| Connectivity | LINbus, SCI, SPI |
| Peripherals | POR, PWM |
| Tension d'alimentation | 2.5 V to 5.5 V |
| Température de fonctionnement | -40C to +105C (automotive/industrial) |
| Part Status | Obsolete |
Configuration des broches de MC908EY8AVFJE
| Broche 1 | IRQ — External interrupt request input |
| Broche 2 | PTA0 — Port A bit 0 / general-purpose I/O |
| Broche 3 | PTA1 — Port A bit 1 / general-purpose I/O |
| Broche 4 | PTA2 — Port A bit 2 / general-purpose I/O |
| Broche 5 | PTA3 — Port A bit 3 / general-purpose I/O |
| Broche 6 | PTA4 — Port A bit 4 / general-purpose I/O |
| Broche 7 | PTA5 — Port A bit 5 / general-purpose I/O |
| Broche 8 | PTA6 — Port A bit 6 / general-purpose I/O |
| Broche 9 | PTA7 — Port A bit 7 / general-purpose I/O |
| Broche 10 | VSS — Ground reference |
| Broche 11 | PTB0 — Port B bit 0 / general-purpose I/O |
| Broche 12 | PTB1 — Port B bit 1 / general-purpose I/O |
| Broche 13 | PTB2 — Port B bit 2 / general-purpose I/O |
| Broche 14 | PTB3 — Port B bit 3 / general-purpose I/O |
| Broche 15 | PTB4 — Port B bit 4 / general-purpose I/O |
| Broche 16 | PTB5 — Port B bit 5 / general-purpose I/O |
| Broche 17 | PTB6 — Port B bit 6 / general-purpose I/O |
| Broche 18 | PTB7 — Port B bit 7 / general-purpose I/O |
| Broche 19 | PTC0 — Port C bit 0 / general-purpose I/O |
| Broche 20 | PTC1 — Port C bit 1 / general-purpose I/O |
| Broche 21 | PTC2 — Port C bit 2 / general-purpose I/O |
| Broche 22 | PTC3 — Port C bit 3 / general-purpose I/O |
| Broche 23 | PTC4 — Port C bit 4 / general-purpose I/O |
| Broche 24 | PTC5 — Port C bit 5 / general-purpose I/O |
| Broche 25 | PTC6 — Port C bit 6 / general-purpose I/O |
| Broche 26 | PTC7 — Port C bit 7 / general-purpose I/O |
| Broche 27 | VDD — Positive supply voltage |
| Broche 28 | OSC1 — Crystal oscillator input |
| Broche 29 | OSC2 — Crystal oscillator output |
| Broche 30 | RESET — Reset input (active low) |
| Broche 31 | TCLK — Timer clock input |
| Broche 32 | VREF — ADC voltage reference |
Applications typiques
MC908EY8AVFJE convient pour 6 applications: Automotive LIN Slave Node, Body Control Module I/O Expander, Low-Cost Appliance Control Board, Industrial Sensor Interface Module, Smart Sensor / IoT Edge Device, HVAC Control Sub-Assembly.
Automotive LIN Slave Node
The MC908EY8AVFJE is purpose-built for low-cost LIN 1.x/2.0 slave nodes inside vehicle body-electronics networks. Its on-chip SCI block can be reconfigured into a LIN-friendly UART with auto-baud, and the 8KB Flash holds typical LIN slave state machines plus diagnostic UDS handlers in 4-6KB of compiled code. The 2.5V-5.5V supply range tolerates automotive 12V battery transients after a pre-regulator, and the -40C to +105C operating range meets door-module, mirror-controller, and seat-switch LIN-node thermal requirements. The 24 I/O pins are sufficient to drive relay drivers, read switch matrices, and PWM low-side outputs at a per-channel resolution adequate for LED dimming. Compared with a 16-bit upgrade, this part saves roughly USD 1-2 per node at 100k-unit volumes.
Recommandé
Body Control Module I/O Expander
In distributed body-control architectures, the MC908EY8AVFJE acts as a local I/O expander handling switch scanning, LED driving, and PWM-controlled mirror-fold or window functions. The 24 multiplexed I/O lines plus the dedicated 16-bit two-channel timer with PWM give designers headroom to drive 8-12 high-side or low-side outputs at 8-bit PWM resolution while scanning a 4x4 switch matrix through the same pins. The on-chip 8-bit ADC can sample thermistor or potentiometer inputs for ambient-light or position feedback. HC08 code density is high, so a 8KB Flash budget comfortably fits a state-machine plus LIN slave handler. Drop-in compatibility with other 32-LQFP EY-family parts lets one PCB support multiple SKUs at different memory tiers.
Recommandé
Low-Cost Appliance Control Board
White-goods and small-appliance control boards (washing-machine sub-modules, dishwasher user-interface panels, microwave keypads) are a natural fit for the MC908EY8AVFJE. The part handles keypad scanning, 7-segment or basic LCD drive, triac-fired load control via PWM, and SCI-based diagnostic communication without external peripheral ICs. The 8KB Flash budget fits typical appliance state machines plus fault logging in less than 6KB of HC08 code, and the 512-byte RAM is adequate for stack plus a small runtime buffer. The 32-LQFP package supports hand-repair-friendly prototyping for low-volume SKUs and reflow assembly for high-volume production runs, reducing time-to-market versus larger QFP package alternatives.
Recommandé
Industrial Sensor Interface Module
The MC908EY8AVFJE serves well as a 4-20mA loop-powered or RS-485-attached sensor interface in industrial monitoring systems. Its 8-bit ADC with 8 channels is sufficient to digitize thermistor, pressure, or flow-sensor bridges, while the integrated SCI block drives RS-485 transceivers for Modbus-RTU or proprietary protocols. The 24 I/O lines expose enough GPIO to drive status LEDs, optocouplers, and local relay coils. Operating from 2.5V-5.5V with industrial -40C to +105C support, the part handles factory-floor temperature swings when paired with a TVS-protected supply. The HC08's deterministic interrupt latency simplifies time-critical sensor-sampling firmware.
Recommandé
Smart Sensor / IoT Edge Device
Although it predates modern 32-bit IoT controllers, the MC908EY8AVFJE remains useful in cost-constrained IoT edge nodes that need only periodic sensing and a simple UART or SPI link back to a host. The 8KB Flash fits small sensor-fusion or edge-filtering routines, and the SCI/SPI peripherals connect directly to Bluetooth, Sub-GHz, or LoRa module UARTs. Operating current is low enough for battery-powered sensors with aggressive duty cycling, and the wide supply range tolerates lithium-thionyl-chloride cell voltage curves. Drop-in compatibility across the EY family lets one PCB support several sensor SKUs at different code-complexity tiers.
Recommandé
HVAC Control Sub-Assembly
In residential and light-commercial HVAC systems, the MC908EY8AVFJE handles damper control, fan-speed PWM, and thermistor sensing as a localized sub-controller. The 16-bit timer's PWM outputs drive triac or FET-based fan motor stages at 8-bit resolution, while the 8-bit ADC reads multiple 10k NTC thermistors distributed across the air-handler. The HC08's small interrupt latency and deterministic instruction timing ensure stable temperature-loop control. The 32-LQFP package drops onto legacy HVAC PCB footprints, supporting both new designs and field retrofits. Cost per node is a key advantage when an HVAC system uses 4-6 such sub-modules per indoor unit.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC908EY8AVFJE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC908EY8AVFJE-Q1 | MC908EY8CFAE | MC908EY8AVFJR2 | MC908EY8AMFJE | MC908EY8AVFJ |
|---|---|---|---|---|---|---|
| Package | 32-LQFP (7x7) | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HC08 8-bit | HC08 8-bit | HC08 8-bit | HC08 8-bit | HC08 8-bit | HC08 8-bit |
| Program Memory | 8KB Flash | 8KB Flash | 8KB Flash | 8KB Flash | 8KB Flash | 8KB Flash |
| RAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes |
| Max Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| I/O Pins | 24 | 24 | 24 | 24 | 24 | 24 |
| Connectivity | LINbus, SCI, SPI | LINbus, SCI, SPI | LINbus, SCI, SPI | LINbus, SCI, SPI | LINbus, SCI, SPI | LINbus, SCI, SPI |
| Automotive Grade | Industrial (-40C to +105C) | Automotive (AEC-Q100) | Industrial | Industrial | Industrial | Commercial |
Principaux différenciateurs
- Automotive-qualified variant in same footprint (vs MC908EY8AVFJE-Q1)
- Lower memory tier within the same family (vs MC908EY16AMFJE)
- LIN-friendly peripheral mix in 8-bit class (vs MC68HC908JL8CFAE)
Notes de conception
The MC908EY8AVFJE requires a regulated 2.5V to 5.5V supply. Place a 100 nF decoupling capacitor as close as possible to the VDD pin and a bulk 4.7 uF to 10 uF tantalum or ceramic capacitor within 25 mm of the supply pin. The internal POR circuit holds the device in reset until VDD crosses the POR threshold; ensure the regulator rise time is faster than the POR release delay or hold RESET low externally until the rail stabilizes. For automotive 12V inputs, add a TVS diode and series resistor before the 5V regulator to suppress load-dump transients.
The Flash on this HC08 part is organized as 8K x 8 with byte-level erase, but Flash programming requires the internal charge pump to reach nominal voltage. Writing code that uses Flash as EEPROM emulation must enforce byte-erase before write and account for the charge-pump settle time of several milliseconds per operation. Never place the part in a STOP mode with the charge pump active; stop all Flash operations before entering STOP to avoid data corruption. Use the security-byte feature to lock Flash from external read-back if the firmware contains IP.
The 32-LQFP package has a 0.8 mm lead pitch. Reserve at least 0.4 mm clearance between the package body and adjacent traces, and use a 0.3 mm-wide solder stencil aperture for each pad to avoid solder bridges during reflow. Keep the oscillator traces (OSC1/OSC2) short, surrounded by a ground guard ring, and routed away from high-current switching nodes to minimize EMI injection into the clock. Provide a generous ground pour under and around the IC for thermal spreading and to reduce ground bounce on the parallel ports.
Informations de conformité
Standard MC908EY8AVFJE is industrial-grade, not AEC-Q100 qualified; choose -Q1 suffix for automotive. RoHS/REACH/lead-free status not present in verified web data and marked [DATA_NEEDED].