MC68HC908JL8CFAE-FR - 8-bit 8KB Flash MCU 32-LQFP | NXP
部品番号: MC68HC908JL8CFAE-FR ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $8.45 | $8.45 |
| 10 | $7.62 | $76.20 |
| 100 | $6.78 | $678.00 |
| 500 | $5.95 | $2,975.00 |
| 1,000 | $5.2 | $5,200.00 |
MC68HC908JL8CFAE-FR 概要
An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU core, program and data memory, I/O peripherals, and timers onto one silicon die. The HC08 family belongs to the M68HC08 taxonomy of 8-bit MCUs from NXP (formerly Freescale/Motorola), which itself descends from the Freescale HCS08 broad-market product family. Positioned in the embedded microcontroller hierarchy, the HC08 sits below 32-bit ARM Cortex-M devices and above 4-bit microcontrollers in capability while maintaining a low-cost, low-power profile ideal for cost-sensitive embedded designs.
Key features of the MC68HC908JL8 include on-chip FLASH with in-circuit programming, an internal oscillator with software-trimmable bus frequency, an analog watchdog on the ADC, low-voltage reset (LVR), and a low-power STOP/WAIT mode. The integrated 8-bit ADC with 13 input channels provides up to 8-bit resolution for sensor reading and battery monitoring applications, while the SCI (Serial Communications Interface) supports asynchronous serial communication up to the bus clock rate.
The M68HC08 CPU is object-code-compatible with the earlier M68HC05 family, easing migration of legacy firmware. The CPU08 features an enhanced instruction set with a 16-bit index register, stack pointer, and program counter, plus additional addressing modes compared to the HC05. The device includes a security feature that protects on-chip FLASH from unauthorized read-out, supporting secure firmware IP protection for OEM designs.
Typical applications include remote keyless entry (RKE) transmitters, low-end automotive body controllers, white goods and appliance control, lighting controllers, security keypads, battery chargers, and small industrial sensor interfaces. The low-power STOP mode draws microampere-level current, making the MCU well suited to battery-powered and energy-harvesting designs where quiescent drain matters.
When designing with the MC68HC908JL8, ensure that the supply decoupling network uses a 100 nF ceramic capacitor placed within 5 mm of the VDD/VSS pair, and add a 10 uF bulk capacitor at the board input. The internal oscillator accuracy is adequate for asynchronous serial communication up to modest baud rates, but designs requiring tight UART timing should use an external crystal where the package pinout permits it. The IC has a maximum junction temperature of 150 C and an operating temperature range suitable for industrial and consumer environments.
This page synthesizes distributor pricing, verified drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, structured for engineers selecting or replacing this MCU in production designs.
ドロップイン代替品: MC68HC908JL8CFAE-FR — 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: MC68HC908JL8CFAE-FR （同一形状・フットプリント） — 相違点: ADC, Core, Number of I/O Pins, Package, RAM.
クイック比較ツール — 並列比較する代替部品を選択:
MC68HC908JL8CFAE
✅ ドロップイン✓ 在庫あり
$6.4 / 個
データシートを見る →MC908JL8CFAER2
✅ ドロップイン✓ 在庫あり
$2.85 / 個
データシートを見る →MC68HC908JK8CFAE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC9S08PT16VLH
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC9S08PA8VLC
✅ ドロップイン✓ 在庫あり
$1.84 / 個
データシートを見る →MC908AP64CFAER528
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$4.85 / 個
データシートを見る →MC68HC908JL8CFAE-FR 最大定格＆電気的特性
| Core | M68HC08 (CPU08) |
| データバス幅 | 8 bit |
| Program Memory Size | 8 KB (8K x 8) FLASH |
| RAM Size | 256 x 8 bytes |
| 最大クロック周波数 | 8 MHz internal bus |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Number of I/O Pins | 23 GPIO |
| ADC | 8-bit, 13 channels |
| Timers | 2 x 16-bit (TIM1, TIM2) |
| Serial Interface | 1 x SCI (UART) |
| Keyboard Interrupt Module (KBI) | Yes |
| Low Voltage Reset (LVR) | Yes |
| パッケージ | 32-LQFP (7x7 mm) |
| 実装タイプ | Surface Mount |
MC68HC908JL8CFAE-FR ピン構成
| ピン 1 | IRQ — External interrupt request / reset-related input |
| ピン 2 | PTA0 — Port A bit 0 (general-purpose I/O, KBI) |
| ピン 3 | PTA1 — Port A bit 1 (general-purpose I/O, KBI) |
| ピン 4 | PTA2 — Port A bit 2 (general-purpose I/O, KBI) |
| ピン 5 | PTA3 — Port A bit 3 (general-purpose I/O, KBI) |
| ピン 6 | PTA4 — Port A bit 4 (general-purpose I/O, KBI) |
| ピン 7 | PTA5 — Port A bit 5 (general-purpose I/O, KBI) |
| ピン 8 | PTA6 — Port A bit 6 (general-purpose I/O, KBI) |
| ピン 9 | PTA7 — Port A bit 7 (general-purpose I/O, KBI) |
| ピン 10 | VDD — Positive supply voltage (2.7 V to 5.5 V) |
| ピン 11 | VSS — Ground reference |
| ピン 12 | PTB0 — Port B bit 0 (ADC channel, general-purpose I/O) |
| ピン 13 | PTB1 — Port B bit 1 (ADC channel, general-purpose I/O) |
| ピン 14 | PTB2 — Port B bit 2 (ADC channel, general-purpose I/O) |
| ピン 15 | PTB3 — Port B bit 3 (ADC channel, general-purpose I/O) |
| ピン 16 | PTB4 — Port B bit 4 (ADC channel, general-purpose I/O) |
| ピン 17 | PTB5 — Port B bit 5 (ADC channel, general-purpose I/O) |
| ピン 18 | PTB6 — Port B bit 6 (ADC channel, general-purpose I/O) |
| ピン 19 | PTB7 — Port B bit 7 (ADC channel, general-purpose I/O) |
| ピン 20 | PTC0 — Port C bit 0 (general-purpose I/O / timer channel) |
| ピン 21 | PTC1 — Port C bit 1 (general-purpose I/O / timer channel) |
| ピン 22 | PTC2 — Port C bit 2 (general-purpose I/O / timer channel) |
| ピン 23 | PTC3 — Port C bit 3 (general-purpose I/O / timer channel) |
| ピン 24 | PTC4 — Port C bit 4 (general-purpose I/O / SCI) |
| ピン 25 | PTC5 — Port C bit 5 (general-purpose I/O / SCI TxD) |
| ピン 26 | PTC6 — Port C bit 6 (general-purpose I/O / SCI RxD) |
| ピン 27 | OSC1 — Oscillator input / external clock input |
| ピン 28 | OSC2 — Oscillator output |
| ピン 29 | RST — External reset input (active low) |
| ピン 30 | PTD0 — Port D bit 0 (general-purpose I/O / ADC reference) |
| ピン 31 | PTD1 — Port D bit 1 (general-purpose I/O / ADC reference) |
| ピン 32 | NC — Not connected (per datasheet package pinout) |
主な用途
MC68HC908JL8CFAE-FR の用途: 7 件s: Remote Keyless Entry (RKE) Transmitter, White Goods Appliance Control, Lighting Control Module, Security Keypad and Access Control, Battery Charger Controller, Industrial Sensor Interface Module, HVAC Thermostat Control.
Remote Keyless Entry (RKE) Transmitter
The MC68HC908JL8CFAE-FR's low-power STOP/WAIT modes drawing under 1 mA quiescent current and 23 GPIO for keypad matrix scanning fit battery-powered remote keyless entry transmitters. The integrated SCI (UART) at up to 8 MHz bus frequency enables rolling-code generator communication with the vehicle receiver. With 8 KB Flash and 256 bytes RAM, the part stores rolling-code algorithms and button-press debounce logic; the security lock-bit feature protects OEM proprietary firmware from unauthorized read-out.
おすすめ
White Goods Appliance Control
The HC08 MC68HC908JL8CFAE-FR's 13-channel 8-bit ADC and 23 GPIO suit washing machine, dishwasher, and refrigerator control boards where multiple temperature sensors, water level switches, and motor drivers must be monitored. Operating from 2.7 V to 5.5 V lets the MCU connect directly to 5 V-regulated appliance rails without level shifters. The two 16-bit timers drive triac-based motor phase-angle control and PWM for variable-load appliances in homes.
おすすめ
Lighting Control Module
Dimmable LED drivers and DMX-controlled lighting benefit from the MC68HC908JL8CFAE-FR's 13 ADC channels reading ambient light sensors and potentiometer inputs, while 23 GPIO drive LED PWM channels and zero-cross detection. The 8 MHz CPU08 core executes lighting state tables and DMX-512 protocol decoding in real time. Security lock-bits protect custom lighting sequences from cloning in commercial installations.
おすすめ
Security Keypad and Access Control
The MC68HC908JL8CFAE-FR's integrated keyboard interrupt module (KBI) wakes the MCU from STOP on keypad press, conserving battery life in wireless security keypads and access-control panels. The 23 GPIO matrix-scan up to 6x6 key grids, while the 13 ADC channels monitor tamper switches and battery voltage. Security lock-bits protect stored credential tables against external read attempts.
おすすめ
Battery Charger Controller
The MC68HC908JL8CFAE-FR's 8-bit ADC with analog watchdog continuously monitors battery voltage and current during NiCd, NiMH, or Li-ion charge cycles. Two 16-bit timers generate PWM for buck/boost charger topologies, and the SCI port reports charge status to a host controller. Operating at 2.7-5.5 V lets the MCU work directly from single-cell Li-ion or multi-cell NiMH stacks.
おすすめ
Industrial Sensor Interface Module
The MC68HC908JL8CFAE-FR's 13-channel 8-bit ADC and SCI port suit 4-20 mA loop-powered sensor interfaces in industrial environments, reading thermocouples, RTDs, pressure sensors, and flow meters. The HC08 CPU08 core at 8 MHz executes linearization and scaling algorithms in real time, and the 2.7-5.5 V supply accepts 24 V industrial bus rails with external regulation.
おすすめ
HVAC Thermostat Control
The MC68HC908JL8CFAE-FR's 13 ADC channels monitor temperature sensors (NTC thermistors), humidity sensors, and user-setpoint potentiometers in residential HVAC thermostats. Two 16-bit timers drive triac-fired compressor and blower motor control, while the SCI interfaces to Wi-Fi or sub-GHz RF modules for smart-thermostat connectivity. Low-power STOP mode below 1 mA extends battery life in wireless thermostat designs.
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: MC68HC908JL8CFAE-FR — 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 | MC68HC908JL8CFAE | MC908JL8CFAER2 | MC68HC908JK8CFAE | MC9S08PT16VLH | MC9S08PA8VLC |
|---|---|---|---|---|---|---|
| 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 (7x7 mm) - same |
| Core | M68HC08 (CPU08) 8-bit | M68HC08 (CPU08) 8-bit | M68HC08 (CPU08) 8-bit | M68HC08 (CPU08) 8-bit | S08 (enhanced) 8-bit | S08 8-bit |
| Program Memory | 8 KB Flash | 8 KB Flash | 8 KB Flash | 8 KB Flash | 16 KB Flash | 8 KB Flash |
| RAM Size | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 1 KB | 1 KB |
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 20 MHz | 20 MHz |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Lifecycle Status | NRND | NRND | NRND | NRND | Active | Active |
主な差別化要因
- Identical die available in same 32-LQFP footprint with reel-code suffix flexibility （vs MC68HC908JL8CFAE)
- Active-lifecycle modern S08 successor with 4x Flash and 4x RAM in same package （vs MC9S08PT16VLH)
- Pin-compatible family member from the same datasheet （vs MC68HC908JK8CFAE)
設計ノート
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD (pin 10) and VSS (pin 11) pair, with traces short and direct. Add a 10 uF bulk capacitor at the board's supply input. The internal oscillator draws bursts of current when the bus clock gates wake from STOP mode, so decoupling near the package is critical to prevent supply droop from corrupting Flash writes during in-circuit programming.
The RST pin (pin 29) is bidirectional: holding it low externally during power-up resets the part, but the internal reset driver also drives it low on brown-out events. Do not pull RST high with a weak pull-up; use at least 10 kohm. When migrating firmware from M68HC05 code, note that the CPU08's new instructions and addressing modes require recompilation - object-code compatibility is at the source level only.
Route the oscillator pins OSC1 (pin 27) and OSC2 (pin 28) with short traces guarded by a ground plane to minimize clock noise injection into adjacent analog ADC channels on PTB. If using an external crystal, place load capacitors within 2 mm of the oscillator pins. For ADC accuracy, route analog PTB inputs away from PTD switching signals and add a small RC filter (1 kohm + 100 nF) at the ADC pin for sensor inputs.
The SCI (UART) signals on PTC4-PTC6 carry logic depending on baud rate; at 8 MHz bus clock the SCI baud rate is configured by the SCBR register. For UART communication at 9600 baud or higher, use shielded routing if cable length exceeds 10 cm. The KBI module wake-from-STOP on PTA pins requires debouncing in firmware - debouncing may be added inline in the keypad scan loop.
コンプライアンス情報
RoHS compliance varies by date code; pre-2006 lots may be non-compliant. AEC-Q100 not qualified - not recommended for new automotive designs. Lead-free yes per modern NXP manufacturing.