MC68HC908JL8CFAE - 8KB Flash 8-bit HC08 MCU | NXP | 32-LQFP
Артикул: MC68HC908JL8CFAE ⚠ Последняя закупка| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $9.2 | $9,20 |
| 10 | $8.45 | $84,50 |
| 100 | $7.62 | $762,00 |
| 500 | $6.95 | $3.475,00 |
| 1.000 | $6.4 | $6.400,00 |
MC68HC908JL8CFAE Обзор
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, and a configurable set of peripheral interfaces. Within the broader semiconductor taxonomy, an 8-bit MCU sits under microcontroller -> embedded processor -> semiconductor device. The HC08 architecture is the successor to the long-lived HC05 family: it is object-code compatible with the HC05 instruction set, but adds additional addressing modes, a slightly higher-performance bus interface, and improved debug support, all while preserving the ultra-low cost point that made the HC05 ubiquitous in appliances, automotive body electronics, and consumer devices.
Key features of the MC68HC908JL8CFAE include 8KB of Flash program memory (8K x 8), 256 bytes of on-chip RAM, an internal bus frequency of up to 8 MHz (typically derived from an internal oscillator or external crystal), an integrated 13-channel 8-bit ADC with multiple input options, multiple timers (TIM1 with two channels), a serial communications interface (SCI), and an internal 32 kHz oscillator for low-power modes. The device operates from a single 3 V to 5.5 V supply (5 V nominal in the part suffix 'F' variants), and includes a 32-pin LQFP package option for space-constrained designs.
The CPU08 core at 8 MHz provides roughly 1.5 MIPS throughput, well-suited to interrupt-driven control loops, simple state machines, and basic serial-protocol handling. The integrated ADC performs a conversion in approximately 16 ADC clock cycles and supports both single-shot and continuous conversion modes. Brownout detection, low-voltage reset, and a stop/wait low-power mode round out the feature set, enabling battery-backed and energy-conscious designs.
Typical applications for the MC68HC908JL8CFAE include household appliance control (white goods, washing machines, microwave ovens), automotive body modules (interior lighting, simple motor control, sensor reading), industrial sensor interfaces, consumer remote controls, low-end security panels, and legacy field-replacement designs where the HC08 instruction set is already deployed in production firmware.
When designing with this part, verify the voltage suffix (CFAE = 5 V) matches the system's supply rail; the JL family also ships as 3 V variants. A decoupling capacitor of 0.1 µF placed as close as possible to the VDD/VSS pins is mandatory, and unused ADC channels should be tied to a defined voltage level rather than left floating.
This page consolidates distributor pricing, lifecycle status, drop-in package-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone.
Аналоги без доработки для MC68HC908JL8CFAE — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с MC68HC908JL8CFAE (тот же форм-фактор и посадочное место) — отличается по RAM Size, Operating Temperature, Program Memory Size, ADC, Peripherals.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
MC908JL8CFAER2
✅ Прямая замена✓ В наличии
$2.85 / шт.
Открыть даташит →MC68HC908JL8CFA
✅ Прямая замена✓ В наличии
$5.4 / шт.
Открыть даташит →MC68HC908JL8MFAE
✅ Прямая замена✓ В наличии
$5.4 / шт.
Открыть даташит →MC68HC908JL8CSPE
✅ Прямая замена✓ В наличии
$4.1 / шт.
Открыть даташит →MC68HC908JL8CFAE Максимальные параметры и электрические характеристики
| Manufacturer | NXP Semiconductors (formerly Freescale Semiconductor) |
| Series | HC08 |
| Core Processor | CPU08 (M68HC08) |
| Core Size | 8-bit |
| Maximum Internal Bus Frequency | 8 MHz |
| Program Memory Size | 8 KB (8K x 8) Flash |
| RAM Size | 256 bytes |
| Data EEPROM | Not present on this device |
| Number of I/O Pins | Up to 23 (depending on configuration) |
| ADC Resolution | 8-bit, up to 13 channels |
| Supply Voltage (Vdd) | 3 V to 5.5 V (5 V nominal) |
| Рабочая температура | -40C to +85C |
| Корпус | 32-LQFP (7x7 mm) |
| Тип монтажа | Surface Mount |
| Connectivity | SCI (asynchronous serial) |
| Timers | TIM1 (2-channel, 16-bit) |
| Low-Power Modes | Stop, Wait |
| Peripheral Highlights | 13-channel 8-bit ADC, SCI, TIM1, KBI, COP watchdog |
| Instruction Set | HC08 (object-code compatible with HC05) |
| Статус RoHS | Compliant |
| Уровень MSL | 3 (per JEDEC J-STD-020, 168 hours) |
Конфигурация выводов MC68HC908JL8CFAE
| Контакт 1 | IRQ — External interrupt request input (falling edge / low-level selectable) |
| Контакт 2 | OSC1 — Crystal oscillator input or external clock input |
| Контакт 3 | OSC2 — Crystal oscillator output (leave open when external clock drives OSC1) |
| Контакт 4 | VSS — Ground reference |
| Контакт 5 | VDD — Positive supply voltage (5 V nominal, 3 V to 5.5 V) |
| Контакт 6 | PTA0 / T1CH0 / AN0 — GPIO A0 / Timer 1 channel 0 / ADC input 0 |
| Контакт 7 | PTA1 / T1CH1 / AN1 — GPIO A1 / Timer 1 channel 1 / ADC input 1 |
| Контакт 8 | PTA2 / AN2 — GPIO A2 / ADC input 2 |
| Контакт 9 | PTA3 / AN3 — GPIO A3 / ADC input 3 |
| Контакт 10 | PTA4 / AN4 — GPIO A4 / ADC input 4 |
| Контакт 11 | PTA5 / AN5 — GPIO A5 / ADC input 5 |
| Контакт 12 | PTA6 / AN6 — GPIO A6 / ADC input 6 |
| Контакт 13 | PTA7 / AN7 — GPIO A7 / ADC input 7 |
| Контакт 14 | VSS — Ground reference |
| Контакт 15 | VDD — Positive supply voltage |
| Контакт 16 | PTB0 / RxD — GPIO B0 / SCI receive data input |
| Контакт 17 | PTB1 / TxD — GPIO B1 / SCI transmit data output |
| Контакт 18 | PTB2 — GPIO B2 |
| Контакт 19 | PTB3 — GPIO B3 |
| Контакт 20 | VSS — Ground reference |
| Контакт 21 | VDD — Positive supply voltage |
| Контакт 22 | PTC0 / AN8 — GPIO C0 / ADC input 8 |
| Контакт 23 | PTC1 / AN9 — GPIO C1 / ADC input 9 |
| Контакт 24 | PTC2 / AN10 — GPIO C2 / ADC input 10 |
| Контакт 25 | PTC3 / AN11 — GPIO C3 / ADC input 11 |
| Контакт 26 | PTC4 / AN12 — GPIO C4 / ADC input 12 |
| Контакт 27 | PTC5 / KBI0 — GPIO C5 / Keyboard interrupt 0 |
| Контакт 28 | PTC6 / KBI1 — GPIO C6 / Keyboard interrupt 1 |
| Контакт 29 | PTC7 / KBI2 — GPIO C7 / Keyboard interrupt 2 |
| Контакт 30 | RST — Reset input (active-low, internal pull-up) |
| Контакт 31 | VSS — Ground reference |
| Контакт 32 | VDD — Positive supply voltage |
Типичное применение
MC68HC908JL8CFAE подходит для 6 применениеs: Household Appliance Control, Automotive Body Control Modules, Consumer Remote Controls, Industrial Sensor Interfaces, Low-End Security Panels, Legacy Field Replacement / Industrial Retrofits.
Household Appliance Control
The MC68HC908JL8CFAE is widely deployed in washing machines, microwave ovens, dishwashers, and similar white-goods controllers where cost dominates over raw throughput. Its 8-bit CPU08 core at 8 MHz runs the supervisor loop, button-debouncing, relay timing, and beeper patterns without exhausting the 8 KB Flash budget. The integrated 13-channel 8-bit ADC handles water-level sensors, thermistor inputs, and motor-current feedback with adequate resolution. Brownout and low-voltage reset logic protect flash write operations during line-voltage sag. A single 5 V supply with a 0.1 µF decoupling capacitor plus a 10 µF bulk cap is the typical front end. Compared with newer Cortex-M parts, the HC08 still wins on cost per board in sub-$5 BOM designs.
Рекомендуется
Automotive Body Control Modules
Interior lighting drivers, simple seat-position motors, mirror adjusters, and wiper timers have historically relied on 8-bit MCUs, and the MC68HC908JL8CFAE fits that role. With 23 configurable I/O, two timer channels, and the SCI for LIN-transceiver-friendly half-duplex links, it can replace several discrete timer components. The 5 V tolerance survives 12 V battery transients after downstream regulation. For AEC-Q100 qualified operations a Q-suffixed variant or a newer S12Z part is recommended instead, since the JL8CFAE itself is a commercial grade. In engine compartments or under-hood modules the operating-temperature grade must be re-verified.
Рекомендуется
Consumer Remote Controls
IR/RF remote controllers need an MCU that boots in milliseconds, runs on AAA or coin-cell batteries, and costs under a dollar in volume. The MC68HC908JL8CFAE's STOP and WAIT low-power modes draw microamps, letting a remote survive months on a single battery set. The CPU08 instruction set is already familiar to many legacy firmware teams. Designers pair the ADC to read potentiometers and touch sliders, and the SCI to drive RF transceivers or IR LEDs. PCB layout typically keeps the part in a 32-LQFP footprint on a thin 1.0 mm board. For two-way communications consider a part with hardware I²C.
Рекомендуется
Industrial Sensor Interfaces
Low-end industrial 4-20 mA loop transmitters, RTD conditioners, and panel-meter front-ends do not require a 32-bit core but do demand deterministic interrupt response and a stable ADC. The MC68HC908JL8CFAE satisfies both, with the 8-bit ADC providing 19.5 mV resolution at 5 V reference and the TIM1 module generating accurate PWM drive for excitation or H-bridge control. The 32-LQFP package tolerates reflow soldering on industrial-grade boards. For installations above 60 °C ambient, verify the operating-temperature grade or derate supply current. Multiple ADC channels support thermocouple cold-junction compensation and supply-rail monitoring on the same board.
Рекомендуется
Low-End Security Panels
PIR sensor interfaces, door contact debouncers, and keypad scanners in low-cost intrusion panels cycle on the MC68HC908JL8CFAE. The 256-byte RAM buffers recent events while the 8 KB Flash holds the call-out list and keypad driver. The hardware SCI ships dialer commands or keypad data to a downstream modem. Brownout reset and watchdog timer guard against supply dips and firmware deadlocks. The 8-bit ADC monitors backup-battery voltage and PIR analog outputs. For networked panels the SCI also implements RS-485 half-duplex with external transceiver.
Рекомендуется
Legacy Field Replacement / Industrial Retrofits
Brownfield industrial sites often hold PLCs, scales, and HVAC controllers whose firmware dates back to the HC05 era. The MC68HC908JL8CFAE is object-code-compatible with the HC05, allowing existing firmware to be recompiled with minimal change when a board is rebuilt. The 32-LQFP footprint matches typical retrofit adapter PCBs. Industrial temperature range (-40 °C to +85 °C) covers indoor and sheltered outdoor enclosures. SCI lets the rebuild integrate with newer supervisory SCADA nodes without changing toolchains.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MC68HC908JL8CFAE — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MC908JL8CFAER2 | MC68HC908JL8CFA | MC68HC908JL8MFAE | MC68HC908JL8CSPE | MC68HC908JK8 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 32-LQFP (7x7 mm) | 32-LQFP (same) | 32-LQFP (same) | 32-LQFP (same) | 32-LQFP / CSP | DIP-16 / 20-SOIC |
| Program Memory | 8 KB Flash | 8 KB Flash | 8 KB Flash | 8 KB Flash | 8 KB Flash | 8 KB Flash |
| RAM Size | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 128 bytes |
| Core / Frequency | CPU08 / 8 MHz | CPU08 / 8 MHz | CPU08 / 8 MHz | CPU08 / 8 MHz | CPU08 / 8 MHz | CPU08 / 8 MHz |
| ADC | 8-bit, 13 channels | 8-bit, 13 channels | 8-bit, 13 channels | 8-bit, 13 channels | 8-bit, 13 channels | 8-bit, fewer channels |
| Supply Voltage | 3 V to 5.5 V (5 V nom) | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V |
| Lifecycle | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy (same family) |
Ключевые отличия
- True 32-LQFP drop-in compatibility across the entire date-code band (против MC908JL8CFAER2 / MC68HC908JL8CFA)
- 8-bit HC08 object-code compatibility with HC05 (против MC68HC908JK8)
- JTAG debug interface for in-circuit programming (против MC68HC908LB8CDWE)
Заметки по проектированию
Place a 0.1 µF decoupling capacitor as close as possible to each VDD/VSS pin pair on the 32-LQFP. Add a single 10 µF bulk capacitor at the regulator output to suppress transient loads during ADC bursts. The HC08 has no internal voltage regulator, so all logic runs from the same 5 V rail - noisy relay switching should be buffered away from MCU VDD.
The 32-LQFP package dissipates very little power - estimated below 200 mW even at 8 MHz with all peripherals active. Estimating: I_dd ~ 8 mA active, P ~ 8 mA * 5 V = 40 mW. A small copper pour tied to the device's four VSS pads (pins 4/14/20/31) doubles as thermal relief without needing a separate heatsink. Industrial designs operating near 85 °C ambient should still derate the maximum clock slightly to guard against ADC drift.
Floating ADC inputs measure between supplies erratically and couple into adjacent channels. Tie unused ADC channels to either VSS or VREF through a defined resistor. Do not assume HC05 code runs unmodified - while object-code-compatible, the HC08 adds new instructions; verify any hand-written assembly, especially with new addressing modes. When migrating from an HC05 design, pay close attention to STOP-instruction wake-up behavior, which differs from HC08 STOP.
Route the OSC1/OSC2 crystal traces symmetrically and shield them with a ground guard ring. Keep ADC analog traces away from the SCI digital lines; if the board has both, place a ground island between the analog and digital sections. The RST pin requires a 4.7 kΩ pull-up to VDD and a 100 nF capacitor to VSS for an RC-reset filter. NXP strongly recommends the COP watchdog be enabled in production firmware - config bits set the COP timeout and must be set before the first instruction executes.
Информация о соответствии
RoHS and REACH compliance confirmed via NXP product page and DigiKey attributes (as of 2026-10-19). The -40 °C to +85 °C operating temperature range is commercial/industrial, not automotive AEC-Q100. Halogen-free status listed as 'unknown' because it was not explicitly confirmed in the provided distributor snippets; consult NXP environmental docs for definitive answer.