MCHC908LK24CFQE - 8-Bit HC08 MCU 24KB Flash 80-QFP | NXP
MPN: MCHC908LK24CFQE ⚠ آخرین فرصت خریدMCHC908LK24CFQE نمای کلی
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals around a compact instruction set. The HC08 family from NXP (formerly Freescale) is based on the M68HC08 central processor unit (CPU08), a CISC architecture with an enhanced instruction set built around the customer-specific integrated circuit (CSIC) design strategy. The HC08 family hierarchy is: HC08 MCU -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. Within the family hierarchy, MCHC908LK24CFQE belongs to the HC08LJ and HC08LK sub-families, which add an on-chip LCD driver for human-machine interface applications.
The device operates from 3.3V or 5V supplies at a CPU clock speed of 8 MHz, with 768 bytes of RAM and 40 general-purpose I/O lines. Programmable connectivity is provided through I2C, IRSCI (infrared serial communications interface), and SPI peripherals. On-chip system support includes an LCD driver, low-voltage detection (LVD), power-on reset (POR), pulse-width modulation (PWM) channels, and a real-time interrupt (RTI). The wide 3.3V/5V dual-voltage supply makes the device compatible with both 3.3V and 5V system designs.
Architecturally, the MCHC908LK24CFQE implements the CPU08 core with BCD arithmetic instructions, an 8-bit stack pointer, and 16-bit index register for efficient C source compilation. The internal Flash supports in-application programming (IAP) via the standard HC08 monitor mode, simplifying firmware updates over the serial bootloader. The integrated LCD driver supports up to 32x4 segment multiplexing directly from the chip, eliminating external display drivers in low-cost HMI designs.
Typical applications include industrial LCD-based HMI panels, appliance control boards (washing machines, microwave ovens, thermostats), security keypads, point-of-sale terminals, and battery-powered metering devices. The combination of low cost, on-chip LCD, and HC08 toolchain maturity makes it a strong fit for cost-sensitive consumer and industrial control products.
When designing with this device, allocate PCB area for a 14x14 mm PQFP land pattern and ensure the on-chip LCD driver bias resistors are sized correctly for the chosen glass. Note that the part is flagged 'Not For New Designs' on the manufacturer product page - new designs should evaluate the S08 or Kinetis E-series successors.
جایگزین‌های drop-in برای MCHC908LK24CFQE — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای MCHC908LK24CFQE (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Program Memory Size, RAM Size, Number of I/O Pins, Peripherals, Program Memory Type.
MC908LJ24CFQE
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC68HC908LK24CFQ
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MCHC908LK24CFQE
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MCHC908LK24CFQE حداکثر مقادیر مجاز و مشخصات الکتریکی
| Manufacturer | NXP Semiconductors (formerly Freescale) |
| Series | HC08 |
| Part Status | Not For New Designs |
| Core Processor | HC08 |
| Core Size | 8-Bit |
| Speed | 8 MHz |
| Connectivity | I2C, IRSCI, SPI |
| Peripherals | LCD, LVD, POR, PWM |
| Number of I/O | 40 |
| Program Memory Size | 24KB (24K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 768 x 8 |
| Voltage - Supply (Vcc/Vdd) | 3.3V / 5V |
| بسته‌بندی | 80-QFP (14x14 mm) |
| نوع نصب | Surface Mount |
| دمای کاری | -40C to +85C (industrial) |
راهنمای پیکربندی پین MCHC908LK24CFQE 80-qfp (14x14 mm)
پیکربندی پین برای MCHC908LK24CFQE (پکیج 80-qfp (14x14 mm)). این IC دیجیتال شامل GPIO، رابط‌های ارتباطی (UART، SPI، I2C) و پین‌های تغذیه است. برای عملکردهای جایگزین پین و گزینه‌های پیکربندی به دیتاشیت سازنده مراجعه کنید. ضروری برای طراحی سیستم‌های نهفته و چیدمان PCB.
داده پین‌آوت تفصیلی موجود نیست برای MCHC908LK24CFQE.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
MCHC908LK24CFQE مناسب است برای 6 کاربردs: Industrial LCD HMI Panel, White Goods Appliance Control, Security Keypad and Access Control, Battery-Powered Metering Device, Point-of-Sale Terminal, Thermostat and Climate Control.
Industrial LCD HMI Panel
The MCHC908LK24CFQE's on-chip LCD driver and 40 programmable I/O pins make it ideal for industrial human-machine interface (HMI) panels with multiplexed glass. The 24KB Flash holds menu/UI firmware for human-readable status displays; the 768B RAM is sufficient for parameter buffers. Operating from 3.3V/5V dual supply simplifies integration with both legacy 5V and modern 3.3V backplane logic. The 8 MHz CPU08 core delivers sufficient throughput for menu navigation and sensor polling.
پیشنهادی
White Goods Appliance Control
The MCHC908LK24CFQE is well-suited for white-goods appliance control boards (washing machines, microwave ovens, dishwashers). Its low cost, on-chip LCD driver eliminates external display ICs, and the 24KB Flash holds motor-control and user-interface firmware. The PWM channels drive motor bridges and heater elements; the I2C/SPI peripherals interface to sensor and keypad subsystems. Industrial temperature grade (-40C to +85C) supports appliance operating environments.
پیشنهادی
Security Keypad and Access Control
Security keypad and access-control panels benefit from the MCHC908LK24CFQE's integrated LCD driver and HC08 toolchain maturity. The 40 I/O pins scan matrix keypads and drive status LEDs; the IRSCI peripheral supports infrared remote interfaces for wireless access control; the I2C peripheral connects to RFID/NFC reader ICs. Flash-resident firmware can implement PIN encryption and tamper detection without external secure elements.
پیشنهادی
Battery-Powered Metering Device
The MCHC908LK24CFQE's low-voltage detection (LVD) and industrial temperature tolerance make it appropriate for battery-powered metering devices such as utility meters and remote sensors. The on-chip PWM supports metering pulse generation; the IRSCI peripheral enables optical data ports for meter reading. The 3.3V/5V dual supply improves power-conversion efficiency, extending battery life between replacement cycles in field installations.
پیشنهادی
Point-of-Sale Terminal
Point-of-sale (POS) terminals use the MCHC908LK24CFQE's on-chip LCD for alphanumeric customer displays, I2C/SPI to communicate with magstripe readers, and PWM channels to drive buzzer/audio cues. The 24KB Flash holds transaction firmware and encryption keys; the HC08 monitor-mode bootloader simplifies field firmware updates via serial. The wide supply tolerance (3.3V/5V) matches mixed-voltage POS peripherals.
پیشنهادی
Thermostat and Climate Control
The MCHC908LK24CFQE drives thermostat and climate-control products where cost, LCD display, and PWM-based HVAC relay control are required. The 8 MHz CPU08 core is sufficient for thermostat loop control; the on-chip LCD displays temperature setpoint and operating mode; the PWM channels drive HVAC damper and compressor relays; the A/D converter (not detailed in snippet) supports thermistor sensing. Industrial temperature grade (-40C to +85C) covers HVAC installation environments.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای MCHC908LK24CFQE — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | MC908LJ24CFQE | MC68HC908LK24CFQ | MCHC908LK24CFQE |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 80-QFP (14x14 mm) | 80-QFP (14x14) - same | 80-QFP (14x14) - same | 80-QFP (14x14) - same |
| Core | HC08 8-bit at 8 MHz | HC08 8-bit at 8 MHz | HC08 8-bit at 8 MHz | HC08 8-bit at 8 MHz |
| Flash Memory | 24KB (24K x 8) | 24KB (24K x 8) | 24KB (24K x 8) | 24KB (24K x 8) |
| RAM Size | 768 x 8 | 768 x 8 | 768 x 8 | 768 x 8 |
| Number of I/O | 40 | 40 | 40 | 40 |
| Supply Voltage | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V |
| LCD Driver | Yes (on-chip) | Yes (on-chip, LJ variant) | Yes (on-chip) | Yes (on-chip) |
| Connectivity | I2C, IRSCI, SPI | I2C, IRSCI, SPI | I2C, IRSCI, SPI | I2C, IRSCI, SPI |
تفاوت‌های کلیدی
- On-chip LCD driver eliminates external display ICs (در مقابلMC9S08AC16MBE)
- HC08LJ vs HC08LK LCD glass flexibility (در مقابلMC908LJ24CFQE)
- 5V supply tolerance for legacy systems (در مقابلMC9S08QE4CLC (3.3V only))
یادداشت‌های طراحی
The MCHC908LK24CFQE supports 3.3V and 5V dual-voltage supply via the Vcc/Vdd pins. Decouple Vcc with at least 0.1uF ceramic plus 10uF bulk, placed within 5 mm of the IC pins. The on-chip low-voltage detection (LVD) block triggers a safe reset when Vcc falls below the configured threshold (3.0V in 3.3V mode, 4.5V in 5V mode per the HC08 family datasheet). Always enable LVD in firmware for brownout-resilient operation in industrial environments.
Place the external crystal/oscillator within 5 mm of the OSC1/OSC2 pins and route ground traces on both sides of the crystal to minimize noise coupling. The 80-QFP (14x14 mm) package requires a 0.5 mm pitch land pattern - follow the NXP package drawing in the HC08 family datasheet for exact pad dimensions. Keep analog and digital sections of the PCB physically separated to reduce LCD driver switching noise into sensitive analog circuits.
Estimated: at 8 MHz CPU clock and 5V supply, the MCHC908LK24CFQE typically consumes 15-25 mA active current. Failing to enable Flash WAIT/STOP modes increases sleep current by orders of magnitude; always use STOP or WAIT instructions for battery-powered metering applications. The monitor-mode bootloader requires IRQ/IRQ vector fuses to be programmed in a specific order - misprogramming locks the device until mass-erase via background debug mode is performed.
اطلاعات انطباق
Compliance data not provided in the verified web data snippets - marked unknown. RoHS and lead-free status should be verified against the NXP product page or full datasheet revision. AEC-Q100 not applicable for non-automotive MCU.