MC908EY8AMFJE - 8KB Flash HC08 8-Bit MCU, 32-LQFP | NXP
部品番号: MC908EY8AMFJE ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.8 | $980.00 |
| 500 | $8.4 | $4,200.00 |
| 1,000 | $7.1 | $7,100.00 |
MC908EY8AMFJE 概要
An 8-bit microcontroller (MCU) is a microprocessor core that processes data 8 bits at a time, typically used in embedded systems where low cost, deterministic timing, and peripheral integration outweigh raw compute throughput. Within the broader semiconductor hierarchy, an 8-bit MCU sits below a microcontroller family (HC08 -> Freescale/NXP HC -> 8-bit embedded controller -> integrated circuit). The HC08 core pioneered modern flash-friendly 8-bit designs and remains widely deployed in long-life automotive and industrial platforms where software stability across decades matters more than performance benchmarking.
Key features of the MC908EY8AMFJE include two 16-bit 2-channel timers (TIMA and TIMB) with PWM, a serial peripheral interface (SPI), a serial communications interface (SCI), power-on reset (POR), low-voltage inhibit (LVI), and an internal clock generator that eliminates the external crystal in many designs. The Flash memory supports in-application reprogramming via the built-in monitor ROM, simplifying field firmware updates.
The MC908EY8AMFJE uses the M68HC08 instruction set with a von Neumann bus architecture and an internal bus frequency up to 8 MHz at 5V, giving roughly 1 MIPS of integer throughput. The ICG module provides a stable internal reference and supports trimming for accuracy, removing an external resonator in cost-driven designs. The 24 GPIO pins are multiplexed with timer, SCI, SPI, and interrupt functions.
Typical applications include automotive body controllers, instrument clusters, HVAC flap and blower control, seat and mirror actuators, simple sensor interfaces, and low-end consumer appliances where LIN or SCI network connectivity is required.
When designing with this part, note that the part is now marked Obsolete by NXP; long-life production systems should qualify a successor such as the S08 family. Ensure supply decoupling follows the datasheet's recommended 100 nF + bulk capacitor placement near the VDD pins.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer datasheet page, including cross-brand cross-references validated against the Verified Web Data set.
ドロップイン代替品: MC908EY8AMFJE — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MC908EY8AMFJE （同一形状・フットプリント） — 相違点: Peripherals, Program Memory Size, RAM Size, Supply Voltage, EEPROM Size.
クイック比較ツール — 並列比較する代替部品を選択:
MC908EY16AMFJE
✅ ドロップイン✓ 在庫あり
$5.2 / 個
データシートを見る →MC908EY8ACFJE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC908EY8CFAE
✅ ドロップイン✓ 在庫あり
$4.61 / 個
データシートを見る →MC68HC908EY8AMFJE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC908AP32ACFQE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC908EY8AMFJE 最大定格＆電気的特性
| Core Processor | HC08 |
| Core Size | 8-bit |
| Program Memory Size | 8 KB (8K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 512 B (512 x 8) |
| EEPROM Size | Not present |
| Number of I/O | 24 |
| 最大クロック周波数 | 8 MHz internal bus |
| Connectivity | LINbus, SCI, SPI |
| Peripherals | POR, PWM, LVI |
| Timers | 2 x 16-bit, 2-channel (TIMA, TIMB) with PWM |
| Oscillator Type | Internal (ICG) |
| パッケージ / ケース | 32-LQFP (7x7 mm) |
| 実装タイプ | Surface Mount |
| Packaging | Tray |
| Series | HC08 |
| Operating Voltage | 5 V typical |
MC908EY8AMFJE ピン構成
| ピン 1 | PTA0/TCLK — Port A bit 0 / Timer A clock input |
| ピン 2 | PTA1 — Port A bit 1 |
| ピン 3 | PTA2 — Port A bit 2 |
| ピン 4 | PTA3 — Port A bit 3 |
| ピン 5 | PTA4 — Port A bit 4 |
| ピン 6 | PTA5 — Port A bit 5 |
| ピン 7 | VSS — Ground |
| ピン 8 | VDD — Power supply |
| ピン 9 | PTB0 — Port B bit 0 |
| ピン 10 | PTB1 — Port B bit 1 |
| ピン 11 | PTB2 — Port B bit 2 |
| ピン 12 | PTB3 — Port B bit 3 |
| ピン 13 | PTB4 — Port B bit 4 |
| ピン 14 | PTB5 — Port B bit 5 |
| ピン 15 | PTC0 — Port C bit 0 |
| ピン 16 | PTC1 — Port C bit 1 |
| ピン 17 | PTC2 — Port C bit 2 |
| ピン 18 | PTC3 — Port C bit 3 |
| ピン 19 | PTC4 — Port C bit 4 |
| ピン 20 | PTC5 — Port C bit 5 |
| ピン 21 | PTD0/RxD — Port D bit 0 / SCI receive |
| ピン 22 | PTD1/TxD — Port D bit 1 / SCI transmit |
| ピン 23 | PTD2/MISO — Port D bit 2 / SPI MISO |
| ピン 24 | VDD — Power supply (second VDD) |
| ピン 25 | VSS — Ground (second VSS) |
| ピン 26 | PTD3/MOSI — Port D bit 3 / SPI MOSI |
| ピン 27 | PTD4/SPSCK — Port D bit 4 / SPI clock |
| ピン 28 | PTD5/ICGOUT — Port D bit 5 / ICG output |
| ピン 29 | RST — Reset input (active low) |
| ピン 30 | IRQ — External interrupt request |
| ピン 31 | OSC1 — Crystal oscillator input |
| ピン 32 | OSC2 — Crystal oscillator output |
主な用途
MC908EY8AMFJE の用途: 6 件s: Automotive Body Controller, HVAC Flap and Blower Control, Instrument Cluster Indicator, Seat and Mirror Actuator Module, Industrial Sensor Interface Node, Low-End Consumer Appliance Controller.
Automotive Body Controller
The MC908EY8AMFJE suits automotive body modules because its LINbus connectivity, 24 GPIO pins, and two 16-bit PWM timers can drive lamp, wiper, and door-lock actuators. With 8 KB of Flash and 512 B RAM it fits cost-sensitive nodes running a small RTOS or simple scheduler, while the internal clock generator eliminates a crystal to reduce BOM cost. The integrated LVI module prevents code corruption during crank-and-start brown-out events.
おすすめ
HVAC Flap and Blower Control
HVAC modules use the MC908EY8AMFJE to drive mixed-air stepper or DC blower motors through the integrated PWM timers and 24 GPIOs. The SCI peripheral interfaces with the HVAC control panel, while the 8 KB Flash easily fits typical flap control tables. The internal ICG keeps the bill of materials low, and the small LQFP-32 package simplifies the compact module housing used behind the dashboard.
おすすめ
Instrument Cluster Indicator
The MC908EY8AMFJE powers low-end instrument cluster sub-displays where it reads sensor inputs via the ADC channels, drives LEDs via PWM, and serial-links to the main cluster MCU over SCI. The 8 MHz internal bus and 512 B RAM are sufficient for indicator control, while the LINbus support enables keypad backlighting and telltale sharing. The Flash memory supports in-field firmware updates through the monitor mode bootloader.
おすすめ
Seat and Mirror Actuator Module
Body-electronics seat and mirror modules rely on the MC908EY8AMFJE's PWM channels to control motor speed and direction through external H-bridge drivers. The 24 GPIO pins are multiplexed to read position switches and Hall sensors while SPI/SCI handles communication with the body controller. AEC-qualified temperature grades and the small LQFP footprint are well matched to the under-seat and door-mirror mechanical envelope.
おすすめ
Industrial Sensor Interface Node
Industrial sensor hubs use the MC908EY8AMFJE to aggregate analog sensor data, perform basic linearization in firmware, and forward the result to a master PLC over SCI or LIN. The 8 KB Flash and 512 B RAM cover compact signal-conditioning code, while two 16-bit timers handle PWM excitation for ratiometric sensors. The internal ICG and integrated LVI simplify the power architecture in 24 V industrial environments.
おすすめ
Low-End Consumer Appliance Controller
The MC908EY8AMFJE fits small kitchen and white-goods controllers where 8-bit throughput is adequate for user-input handling, indicator LED driving, and a UART link to an inverter or display. The integrated PWM channels control simple brushless or brushed DC loads, while the 8 KB Flash easily accommodates state-machine control firmware. The small 32-LQFP package and the internal clock generator minimize BOM cost in mass-market appliances.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MC908EY8AMFJE — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MC908EY16AMFJE | MC908EY8ACFJE | MC908EY8CFAE | MC68HC908EY8AMFJE | MC908AP32ACFQE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 32-LQFP (7x7 mm) | 32-LQFP (7x7 mm) - same | 32-LQFP (7x7 mm) - same | 32-LQFP (7x7 mm) - same | 32-LQFP (7x7 mm) - same | 32-LQFP - same |
| Core | HC08 8-bit | HC08 8-bit | HC08 8-bit | HC08 8-bit | HC08 8-bit | HC08 8-bit |
| Program Memory (Flash) | 8 KB | 16 KB | 8 KB | 8 KB | 8 KB | 32 KB |
| RAM | 512 B | 512 B | 512 B | 512 B | 512 B | 1 KB |
| Maximum Clock | 8 MHz internal bus | 8 MHz internal bus | 8 MHz internal bus | 8 MHz internal bus | 8 MHz internal bus | 8 MHz internal bus |
| GPIO Count | 24 | 24 | 24 | 24 | 24 | 32 |
| Connectivity | LINbus, SCI, SPI | LINbus, SCI, SPI | LINbus, SCI, SPI | LINbus, SCI, SPI | LINbus, SCI, SPI | SCI, SPI |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
主な差別化要因
- Integrated LINbus connectivity in a 32-LQFP 8-bit MCU （vs MC908AP32ACFQE)
- Internal clock generator eliminates external crystal （vs Older HC908JL/JK families)
- Two 16-bit PWM timers with 2 channels each （vs MC908AP32ACFQE)
設計ノート
Decouple each MC908EY8AMFJE VDD pin with a 100 nF ceramic capacitor placed within 5 mm of the package pin, plus a bulk 4.7 uF tantalum or aluminum-polymer cap on the board supply rail. The dual VDD pins (pin 8 and pin 24) and dual VSS pins (pins 7 and 25) must each be connected - floating either pin can cause logic errors during transitions. Tie RST high through a 10 kohm pull-up with a 1 nF capacitor to ground for clean POR behavior.
Do not rely on the internal ICG for tight UART baud rates - the trim accuracy is typically +/-2% and drifts over temperature. For SCI baud rates above 9600 bps or for LIN bus timing, switch to an external ceramic resonator on OSC1/OSC2 (pins 31 and 32). Also note the monitor ROM is enabled by default on the EY8 - disable it for production firmware or unwanted entry into monitor mode can occur if PTA0 is held low at reset.
Estimated: At maximum 8 MHz bus activity across all peripherals, supply current is approximately 15 mA, so dissipation on a 5 V supply is around 75 mW. The 32-LQFP (7x7 mm) package has a theta_JA of approximately 65 C/W on a 2-layer board, giving a 5 C rise above ambient. No heatsink is required; however, keep the part away from high-power MOSFETs and consider thermal vias if used in a sealed enclosure.
コンプライアンス情報
Compliance information not retrieved by the verified web data set; users should request the latest NXP material declaration before committing to production.