MCHC908JW32FHE - 8-Bit 32KB Flash MCU 8MHz | NXP
MPN： MCHC908JW32FHE ✗ 停產MCHC908JW32FHE 概覽
A microcontroller is a semiconductor that integrates a processor core, memory, input/output ports, timers, and other peripherals into one compact device. Within the product hierarchy, this part is an MCU, then a microcontroller, then an embedded semiconductor. The HC08 family is designed for small control systems in which Flash-resident firmware can provide repeatable program storage without requiring an external program-memory chip. The CPU architecture, memory map, interrupt behavior, and peripheral mix must be treated as design-critical compatibility items.
The strongest verified features are the 8-bit processor, 32 KB organized as 32K by 8 Flash memory, 8 MHz operating speed, CMOS technology, and 52-pin LQFP construction. Flash memory provides a practical benefit for field-programmed control products because firmware is held in nonvolatile memory. The stated 8 MHz speed provides a useful processing-frequency reference, although the verified source set does not provide detailed cycle-time, instruction-set, RAM, ADC, timer, or I/O specifications.
The MCU is positioned for compact embedded controllers that need an 8-bit architecture and embedded Flash rather than a high-performance application processor. A 10 mm by 10 mm LQFP package provides a practical surface-mount assembly option, but the 52 leads require careful PCB routing, pin-1 identification, and adequate clearance. Because the available records do not expose the complete pin table, applications must be checked against the manufacturer documentation before schematic capture or firmware migration.
Potential uses include appliance control, small industrial controllers, sensor-conditioning systems, digital I/O modules, and other embedded products in which nonvolatile firmware and compact local processing are valuable. These uses are engineering fit categories rather than claims that the verified data lists dedicated analog or communication peripherals. Any selected peripheral, interrupt source, timer channel, or communication interface must be confirmed in the full datasheet.
A critical replacement consideration is firmware and peripheral compatibility. A package match alone does not prove that another MCU is a drop-in replacement; register compatibility, interrupt vectors, memory size, clock behavior, and pin multiplexing also matter. Existing M68HC08 designs should therefore preserve the original part where possible and validate any substitute through schematic, timing, and firmware checks.
This page combines the verified distributor identity, package and memory facts, pricing reference, sourcing links, and compatibility cautions. It is intended to help engineers locate the MCHC908JW32FHE and assess it for embedded-control designs without inventing electrical details that were not supplied by the verified sources.
直接替換替代品，適用於 MCHC908JW32FHE — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MCHC908JW32FHE （相同外形與佔位） — 差異在於 Architecture, Package, Product Type.
此產品無可直接替換的替代品。
申請替代品MCHC908JW32FHE 最大額定值與電氣特性
| Product Type | 8-bit HC08 microcontroller |
| Architecture | 68HC08 CPU |
| Processor Width | 8 bit |
| Maximum Processing Speed | 8 MHz |
| Program Memory Type | Flash |
| Program Memory Size | 32 KB |
| Program Memory Organization | 32K x 8 bits |
| Technology | CMOS |
| 封裝 | 52-pin LQFP |
| Package Body Size | 10 mm x 10 mm |
| 安裝類型 | Surface mount |
| RoHS 狀態 | Compliant |
MCHC908JW32FHE 10 mm x 10 mm 腳位配置指南
MCHC908JW32FHE（10 mm x 10 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MCHC908JW32FHE.
請參閱 資料表 以查看完整腳位配置。
典型應用
MCHC908JW32FHE 適用於 6 應用s: Appliance Embedded Controller, Small Industrial Control Module, Sensor Interface and Signal-Control Board, Digital I/O Expansion Module, LED and Indicator Sequencer, Legacy 68HC08 Product Maintenance.
Appliance Embedded Controller
The MCHC908JW32FHE fits an appliance controller when the existing firmware targets an 8-bit 68HC08 and requires 32 KB of nonvolatile program storage. Its verified 8 MHz operating speed is suitable for sequencing discrete I/O, managing operating modes, and coordinating switches or relays where a higher-performance processor is unnecessary. The 52-LQFP package provides ample lead access, although it occupies substantially more board area than a small QFN MCU. Before schematic approval, verify the voltage range, I/O count, timer resources, reset requirements, and pin multiplexing in the M68HC08 datasheet.
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Small Industrial Control Module
A compact industrial module can use the MCHC908JW32FHE as a local controller for discrete inputs, status indicators, and simple actuator commands. The verified 32 KB Flash capacity provides room for application firmware, while the 8 MHz clock establishes a clear baseline for deterministic control-loop and state-machine design. The 10 mm by 10 mm LQFP package is easy to route and inspect but must be assessed against the enclosure and board-area constraints of an industrial product. Confirm noise immunity, temperature range, watchdog behavior, communications, and ESD requirements before deployment.
推薦
Sensor Interface and Signal-Control Board
The MCHC908JW32FHE can serve as the control processor on a board that reads discrete sensor outputs and converts them into system actions. Its 8-bit 68HC08 core is suited to straightforward digital monitoring, threshold handling, debouncing, and actuator-state management, while Flash retains firmware between power cycles. Because the verified data does not list an ADC, serial interface, or specified I/O count, analog measurement and multi-sensor designs must wait until those resources are confirmed. A digital-only input stage is the safest initial fit for this qualification exercise.
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Digital I/O Expansion Module
The MCHC908JW32FHE is a plausible controller for a digital I/O module whose primary work consists of port updates, operating-mode logic, and local fault handling. The documented 32 KB Flash program memory offers more storage than many small state-machine controllers, while the 8 MHz CPU supports straightforward polling and interrupt-driven architectures. Engineers must verify available ports, interrupt vectors, and pin multiplexing before fixing the schematic. The 52-LQFP footprint may also make the module larger than necessary, so compare pin count and board area against the intended enclosure.
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LED and Indicator Sequencer
The MCHC908JW32FHE can implement timing, modes, and status sequences for LED indicators or visual annunciators without using a high-power embedded processor. The 8 MHz 68HC08 operating speed is more than conceptually appropriate for ordinary nonvolatile flash patterns, and the 32 KB Flash configuration leaves room for a structured firmware state machine. Actual LED current limits, port drive strength, and timing accuracy must come from the manufacturer datasheet. If the design uses high-current LEDs, add suitable driver transistors rather than assuming the MCU can directly source the required load.
推薦
Legacy 68HC08 Product Maintenance
The MCHC908JW32FHE is especially relevant to maintenance of legacy equipment built around the M68HC08 ecosystem. Matching the documented 32 KB Flash capacity and 8 MHz architecture can reduce uncertainty when rebuilding an unavailable assembly, while the 52-LQFP package preserves the physical format of the original board. A safe replacement decision still requires exact pin, register, interrupt, timer, and electrical comparisons. Do not substitute a superficially similar HC08 MPN without first rebuilding and testing the target firmware against the candidate device.
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推薦產品摘要
工程參考資料，適用於 MCHC908JW32FHE — 比較、設計指引及合規資訊。
選型指南
主要差異化特點
- Documented Flash-resident firmware configuration (對比MC68HC908LJ12CFB)
- Verified processor and package identity (對比MC9S08QE32CLCR)
- Explicit 10 mm by 10 mm LQFP format (對比MC9S08DN32CLC)
設計說明
Do not treat another 68HC08 or 8-bit MCU as a drop-in substitute merely because it has Flash memory and a similar lead count. Firmware compatibility depends on the memory map, reset behavior, interrupt vector table, timer registers, port multiplexing, electrical limits, and package pin assignment. Preserve MCHC908JW32FHE in existing qualified designs unless the complete manufacturer data and application tests establish a qualified replacement.
Use the official 52-LQFP land pattern and pin-1 marking rather than creating dimensions from distributor search results alone. The package is identified as 10 mm by 10 mm, but lead pitch, span, pad length, and solder-mask clearance must come from the manufacturer drawing. Preserve access to programming, reset, clock, power, and ground pins, and follow the datasheet's exposed-pad and thermal-land requirements if one is specified.
Do not select decoupling values or power limits from general MCU conventions until the supply-voltage range, absolute maximum ratings, and pin-level current limits are verified in the M68HC08 datasheet. Place required input and bulk capacitors close to the device according to the manufacturer's reference circuit. Review external pin loads because motor, relay, display, and indicator circuitry must not back-drive or exceed the MCU's documented I/O ratings.
合規資訊
The supplied GlobalSpec summary identifies the device as RoHS compliant. No verified data establishes REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status.
