MC9S08RE32CFJ - 8-Bit 8MHz 32KB Flash MCU | NXP
料号： MC9S08RE32CFJ ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.81457 | $9.81 |
| 10 | $9.81457 | $98.15 |
| 100 | $9.81457 | $981.46 |
| 500 | $9.81457 | $4,907.29 |
| 1,000 | $9.81457 | $9,814.57 |
MC9S08RE32CFJ 概述
An HCS08 S08 microcontroller is an embedded microcontroller within the broader 8-bit microprocessor family. It combines a CPU core, flash program memory, SRAM, peripherals, and general-purpose I/O in one integrated circuit. Compared with field-programmable gate arrays, an MCU executes control firmware directly, reducing board complexity for motor, sensor, appliance, and industrial-control tasks. Its 32 KB flash capacity provides room for application code and fixed data, while the 2 KB SRAM supports working variables and stack operations.
The MC9S08RE32CFJ's principal verified characteristics are its 8-bit architecture, 8 MHz operating frequency, 32 KB flash, 2 KB RAM, and 32-LQFP 7 x 7 mm package. A second distributor snippet reports a 16 MHz clock-related attribute and 32,768 ROM words, while the primary DigiKey description identifies 8 MHz. Because these snippets differ on the clock field, designs should verify the exact bus-clock interpretation and maximum operating frequency against the MC9S08RE32 datasheet before release.
The 32-LQFP package provides a practical upgrade path over smaller packages while retaining a leaded, visually inspectable surface-mount format. The verified data establishes surface mounting and a 7 x 7 mm body, but pin names, peripheral assignments, electrical limits, and exposed thermal-pad details are unavailable in the supplied snippets. Firmware migration also requires validation because a nominal memory-and-package match does not establish instruction-set, peripheral, timing, or toolchain equivalence.
Typical uses include small sensor controllers, appliance interfaces, compact motor-control boards, keypad and display modules, and industrial sub-systems that need deterministic embedded logic. An 8-bit MCU is most appropriate when computation is modest, update simplicity matters, and total system cost is more important than high arithmetic throughput or a large RAM workspace.
Designers should confirm the complete pinout, power rails, I/O limits, reset requirements, clock configuration, memory map, and programming interface from the manufacturer datasheet. Prototype purchases should also verify authenticity, because legacy S08 inventory can include original, surplus, or independently sourced parts with different traceability.
This page combines verified distributor specifications, lifecycle and sourcing cautions, cross-reference availability, and practical design guidance that are not consolidated in a single manufacturer summary. It also distinguishes confirmed 32-LQFP options from larger 44-LQFP variants that cannot be treated as pin-compatible drop-ins.
直接替换替代料： MC9S08RE32CFJ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
该产品暂无直接替换替代料。
请求替代料MC9S08RE32CFJ 最大额定值与电气特性
| Product Type | 8-bit HCS08 S08 flash microcontroller |
| Architecture | 8-bit |
| Maximum Stated Clock Frequency | 8 MHz |
| Conflicting Clock Attribute | 16 MHz reported by one marketplace source |
| Flash Memory | 32 KB (32K x 8) |
| ROM Words | 32,768 words |
| RAM | 2 KB (2048 bytes) |
| 封装 | 32-LQFP (7 x 7 mm) |
| Terminal Count | 32 terminals |
| 安装类型 | Surface mount |
| Supplier Device Package | 32-LQFP (7 x 7 mm) |
| Core Family | HCS08 S08 |
| Program Memory Type | Flash |
MC9S08RE32CFJ 32-lqfp (7 x 7 mm) 引脚配置指南
MC9S08RE32CFJ（32-lqfp (7 x 7 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MC9S08RE32CFJ.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC9S08RE32CFJ 适用于 6 应用s: Compact Sensor Controller, Appliance Control Module, Basic Motor Control Board, Keypad and Indicator Interface, Embedded Data Logger, Legacy Equipment Controller.
Compact Sensor Controller
MC9S08RE32CFJ fits a compact sensing subsystem when the control program is modest and the device must retain 32 KB of flash plus 2 KB of working RAM. Its 8-bit HCS08 S08 architecture is appropriate for periodic sampling, threshold decisions, status reporting, and local actuator control rather than intensive signal analysis. The 32-LQFP 7 x 7 mm package provides 32 externally visible terminals for a leaded surface-mount design. Before schematic release, verify the actual sensor interfaces, available timers, I/O voltage limits, and wake modes in the manufacturer datasheet because those details are not established by the supplied distributor snippets.
推荐
Appliance Control Module
The MC9S08RE32CFJ can serve as the low-cost control core in an appliance module that coordinates buttons, indicators, relays, and a small state machine. Its 32 KB flash accommodates embedded application code and constants, while 2 KB of SRAM supports stack space and intermediate variables. The target device is identified as an 8 MHz part, making it more appropriate for supervisory and discrete-event logic than compute-heavy loops. Final design selection must confirm supply voltage, port drive capability, watchdog behavior, reset pins, and brownout limits from the full datasheet before the 32-LQFP layout is released.
推荐
Basic Motor Control Board
MC9S08RE32CFJ may be evaluated for a small motor-control board where an 8-bit MCU performs command decoding, sequencing, speed-state management, and protection supervision. The 32 KB flash and 2 KB RAM can support a focused control program, while the 32-LQFP package offers a manageable footprint for assembly and inspection. Its suitability depends on timer channels, PWM capability, input capture, and pin mapping, none of which can be confirmed from the provided search results. Engineers must also compare transistor drive levels, current sensing, isolation, regeneration handling, and thermal performance of the power stage.
推荐
Keypad and Indicator Interface
For a keypad, menu, or indicator interface, MC9S08RE32CFJ can handle debouncing, state transitions, display commands, and communication with a host processor. Its 2 KB RAM may be adequate for short buffers and local variables, while 32 KB flash provides room for application logic. The 32-LQFP 7 x 7 mm package is useful where a matrix of LEDs, switches, and connectors requires more external pins than a small MCU package offers. Designers should verify available I/O, port width, pull-up capability, interface timing, and absolute maximum levels because the supplied distributor records do not enumerate these resources.
推荐
Embedded Data Logger
MC9S08RE32CFJ can support a small embedded data logger when stored records and working buffers remain within 32 KB of flash and 2 KB of RAM. Typical tasks include periodic sensor capture, timestamp management, local keypad control, and export through a serial interface. Its 8-bit architecture is suitable for straightforward record formatting but not for high-rate signal compression or large buffering. Before design-in, verify the exact serial interfaces, timer availability, write endurance expectations, external storage interface, and watchdog behavior. If records exceed available memory or acquisition timing is demanding, a larger 16- or 32-bit MCU may be the better architecture.
推荐
Legacy Equipment Controller
MC9S08RE32CFJ is a practical candidate for maintaining or cloning a legacy equipment controller when the original firmware, peripheral map, and 32-LQFP footprint are already known. The 32 KB flash and 2 KB RAM support software compatibility work, while the established HCS08 S08 family may help teams retain an existing development toolchain and organizational knowledge. Migration should begin by archiving the programmed image and schematics, then comparing reset, clock, watchdog, communications, timers, and I/O behavior on target hardware. The part's lifecycle classification remains unknown, so long-term supply risk must be managed separately from electrical compatibility.
推荐
推荐产品汇总
工程参考数据： MC9S08RE32CFJ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MC9S08RE32CFGE |
|---|---|---|
| Brand | NXP Semiconductors / Freescale | NXP Semiconductors / Freescale |
| Package | 32-LQFP (7 x 7 mm) | 44-LQFP (10 x 10 mm) |
| Architecture | 8-bit | 8-bit |
| Stated Clock | 8 MHz | 8 MHz |
| Flash Memory | 32 KB (32K x 8) | 32 KB (32K x 8) |
| RAM | 2 KB | 2 KB |
| Terminal Count | 32 terminals | 44 terminals |
| Body Size | 7 x 7 mm | 10 x 10 mm |
| Mounting Type | Surface mount | Surface mount |
| Drop-In Suitability | Target footprint | Not drop-in: larger package and different terminal count |
关键差异点
- Smaller PCB footprint than the related CFGE package option （对比 MC9S08RE32CFGE)
- Established 32 KB flash and 2 KB RAM configuration （对比 MC9S08RE32CFGE)
- Exact target footprint for MC9S08RE32CFJ assemblies （对比 MC9S08RE32CFGE)
设计说明
Do not treat MC9S08RE32CFGE as a drop-in substitute: verified distributor data places it in a 44-LQFP 10 x 10 mm package rather than the target's 32-LQFP 7 x 7 mm footprint. The family-level similarities in 8-bit architecture, 32 KB flash, and 2 KB RAM do not overcome the physical PCB mismatch. For reuse of MC9S08RE32CFJ firmware, also compare vector tables, memory maps, timers, serial interfaces, reset behavior, and pin multiplexing rather than relying on the MC9S08RE32 family name.
Obtain the exact 32-LQFP pinout and package drawing before routing the PCB; the supplied data confirms only the 32-terminal, 7 x 7 mm format. Preserve a clear pin-1 orientation and place decoupling, reset, clock, and programming-access connections exactly as required by the manufacturer reference design. Because no verified pin assignment is available here, do not infer power, oscillator, or I/O functions from neighboring S08 devices, since related packages can have different terminal assignments.
Clock data conflicts across the supplied search results: DigiKey describes MC9S08RE32CFJ at 8 MHz, while Partstack reports a 16 MHz clock frequency. Treat 8 MHz as the distributor-listed product value and verify whether 16 MHz represents an internal oscillator, maximum clock attribute, or another family-specific condition. Firmware timing, baud-rate generation, timer configuration, and production test limits must be based on the exact manufacturer datasheet rather than the conflicting marketplace snippet.
Validate power sequencing, operating voltage, input thresholds, and I/O drive current directly from the MC9S08RE32 datasheet before connecting external sensors or relays. The verified snippets do not state supply voltage, absolute maximum ratings, or peripheral current limits. Keep sensitive signals properly conditioned, use local high-frequency bypass capacitance following manufacturer guidance, and isolate inductive or high-voltage loads from the MCU so switching transients do not create unintended reset or flash-write hazards.
Distributor availability does not prove current manufacturer lifecycle status or supply quality. As of 2026-10-21, MC9S08RE32CFJ is offered by several sellers, but no authoritative NXP lifecycle declaration was supplied. For a new production design, request supplier provenance, date code, condition, programming data, counterfeit-avoidance controls, and change notifications. Archive the last approved firmware image and board test results because an older or independently sourced part may differ in markings, test status, or traceability.
合规信息
The supplied verified search results do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claim has been inferred from package type, distributor listing, or manufacturer branding.