MC9S08AC8CFGE - 40MHz 8-bit MCU with 8KB Flash | NXP
MPN： MC9S08AC8CFGE ✗ 停產MC9S08AC8CFGE 概覽
An 8-bit microcontroller is a compact embedded-processing semiconductor that executes firmware from nonvolatile Flash memory while using general-purpose I/O to monitor inputs and operate external devices. The HCS08 S08AC core combines a simple 8-bit architecture with a high peripheral integration level, placing the MCU in the broader hierarchy of embedded controller, semiconductor, and industrial-control electronics. This makes the MC9S08AC8CFGE suitable for appliances, instrumentation, access controls, and small automation systems.
Verified features include a 40 MHz clock, 8 KB of 8K x 8 Flash, and 4 KB of RAM. Its 44-LQFP package provides 34 I/O ports according to one verified product listing, while another secondary record reports 38 I/O ports; this discrepancy must be resolved against the manufacturer datasheet before a new PCB is released. A 4-channel ADC supports analog measurement, and the listed serial interfaces allow communication with sensors, displays, actuators, and external controllers.
The S08 architecture emphasizes economical embedded control rather than high compute throughput. Firmware execution, memory use, clock settings, peripheral configuration, and pin multiplexing must be checked against the manufacturer data sheet for the exact suffix and temperature grade. Because NXP marks the product as end of life, production planning should account for limited future supply and formal lifecycle review before committing to long-running designs.
Typical uses include compact motor and relay controllers, analog sensor acquisition, keypads, serial bridges, lighting controls, industrial interface modules, and cost-sensitive consumer equipment. The 44-LQFP package is easy to prototype with accessible leads, but its relatively large footprint requires more board area than a modern fine-pitch package. Existing S08 software and toolchain investment can make replacement planning more important than simply adopting a newer MCU architecture.
A robust design should verify all supply rails, oscillator connections, reset behavior, exposed programming pins, and ADC reference requirements before layout. Preserve the supported programming interface and include recovery access in the board test plan. For an EOL redesign, treat firmware compatibility, tooling availability, and last-time-buy timing as primary engineering constraints alongside electrical equivalence.
This page consolidates verified distributor and manufacturer information with practical replacement and design guidance. It does not invent unavailable electrical limits, pin assignments, prices, or cross references, and clearly identifies missing data where the supplied records conflict or remain incomplete.
直接替換替代品，適用於 MC9S08AC8CFGE — 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： MC9S08AC8CFGE （相同外形與佔位） — 差異在於 Package, Core, Operating Temperature Range, RoHS Status, Flash Memory.
此產品無可直接替換的替代品。
申請替代品MC9S08AC8CFGE 最大額定值與電氣特性
| Product Type | 8-bit HCS08 microcontroller |
| Series | S08AC |
| 最大時脈頻率 | 40 MHz |
| Internal Bus Frequency | 20 MHz |
| Flash Memory | 8 KB (8K x 8) |
| RAM Memory | 4 KB |
| ADC Channels | 4 channels |
| Supply Voltage Range | 2.7 V to 5.5 V |
| 封裝 | 44-LQFP, 10 mm x 10 mm |
| 安裝類型 | Surface mount |
| I/O Port Count | 34 ports |
| 工作溫度範圍 | -40 °C to +85 °C |
| Packaging Method | Tray |
| Program Memory Type | Flash |
| CPU Architecture | HCS08 8-bit |
| Serial Interfaces | Serial interfaces |
| RoHS 狀態 | RoHS compliant |
| 生命週期狀態 | End of life |
MC9S08AC8CFGE 44-lqfp, 10 mm x 10 mm 腳位配置指南
MC9S08AC8CFGE（44-lqfp, 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： MC9S08AC8CFGE.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC9S08AC8CFGE 適用於 7 應用s: Industrial Sensor Acquisition, Compact Appliance Controller, Access Control Module, Serial Interface Bridge, LED Lighting Control, Laboratory Instrument Control, Battery-Powered Sensor Node.
Industrial Sensor Acquisition
The MC9S08AC8CFGE fits compact sensor modules that must convert a small number of analog inputs and exchange results through a serial link. Its verified 4-channel ADC, 8-bit HCS08 architecture, 8 KB of Flash, and 4 KB of RAM are sufficient for calibrated sampling, filtering, threshold decisions, status reporting, and local configuration. The 44-LQFP package also leaves 44 physical terminals for power, communications, programming, control outputs, and external interfaces. Because the lifecycle is end of life, retain the MCU only in a controlled legacy design or when redesign qualification is not practical.
推薦
Compact Appliance Controller
The MC9S08AC8CFGE can manage appliances where a deterministic 8-bit controller handles buttons, relays, indicators, and a few analog inputs. The verified 40 MHz clock provides timing headroom for firmware tasks, while 8 KB of Flash holds control code and 4 KB of RAM supports state variables and communication buffers. Its serial interfaces can connect to displays or sensors, and the 4-channel ADC can monitor temperature or supply-related conditions. Designers must verify actual pin multiplexing, electrical limits, and code-generation support before committing to a new appliance platform.
推薦
Access Control Module
The MC9S08AC8CFGE is suitable for legacy credential readers, keypad controllers, relay drivers, and alarm interfaces because it combines an 8-bit CPU with Flash, RAM, ADC, serial interfaces, and many package pins. Firmware can scan inputs, debounce keys, evaluate a credential decision, drive indicators, report events, and supervise a lock. The 44-LQFP package is useful for prototype visibility but requires more PCB area than a fine-pitch alternative. For new security equipment, evaluate current NXP devices and secure hardware requirements rather than extending this end-of-life MCU platform.
推薦
Serial Interface Bridge
The MC9S08AC8CFGE can serve as a protocol-conversion or telemetry bridge when a legacy system needs to mediate between a host and embedded peripherals. Its verified serial interfaces, 8-bit CPU, 4 KB of RAM, and 8 KB of Flash allow buffering, framing, timeout handling, and command translation. The 44-LQFP package provides sufficient external connections for UART-style communication, logic-level interfaces, reset, indicators, and programming access. Firmware and peripheral assignments must be checked against the manufacturer data sheet, particularly because the supplied records do not specify every serial-module variant.
推薦
LED Lighting Control
The MC9S08AC8CFGE can coordinate lighting effects, timing, dimming commands, and sensor-driven behavior in compact LED fixtures. Its verified 40 MHz S08 processor, 4 KB of RAM, serial connectivity, and 44-LQFP terminal count support real-time control logic and external driver interfaces. An LED driver design must keep the MCU rail clean, provide stable timing, and isolate high-current switching stages from sensitive control signals. The MCU itself does not replace an LED power-conversion stage; it supervises it, so suitable driver topology, protection, and thermal design remain separate engineering requirements.
推薦
Laboratory Instrument Control
The MC9S08AC8CFGE is technically relevant to legacy laboratory instruments that acquire a small number of analog channels and report measurements through serial interfaces. Its verified 4-channel ADC and 8 KB of Flash support calibration tables, acquisition sequencing, diagnostics, and command handling, while 4 KB of RAM can hold samples and protocol state. For precision measurements, verify ADC resolution, acquisition timing, reference voltage, accuracy, and noise specifications that are not present in the supplied data. Because the MCU is end of life, new instruments should compare it with supported current devices before development begins.
推薦
Battery-Powered Sensor Node
The MC9S08AC8CFGE can support a legacy low-power sensor node when its exact sleep modes, active current, and wake-up sources are confirmed in the manufacturer data sheet. The verified 2.7 V to 5.5 V operating range and 4-channel ADC support sensing from modest power rails, while serial interfaces can report readings to a gateway. The 40 MHz clock is useful during short active intervals, but battery-life design must include regulator quiescent current and wake-up behavior that are not supplied. Consider the end-of-life status and require long-term supply assurance before using it in new remote-monitoring products.
推薦
推薦產品摘要
工程參考資料，適用於 MC9S08AC8CFGE — 比較、設計指引及合規資訊。
選型指南
主要差異化特點
- Verified legacy S08AC control resource set (對比Modern general-purpose MCUs)
- Visible 44-terminal prototype package (對比Fine-pitch or BGA microcontrollers)
- Supply compatibility for established 2.7 V to 5.5 V systems (對比Higher-voltage or lower-voltage replacement devices)
設計說明
Design the supply rails around the verified 2.7 V to 5.5 V device operating range, but do not infer pin-specific connections or absolute maximum ratings from that range. Confirm the NXP pinout, decoupling recommendations, analog reference requirements, and debug or programming power states in the manufacturer data sheet. Since the MCU is end of life, preserve the original power architecture and test behavior across input tolerances to avoid relying on an unverified migration part.
Treat the 44-LQFP package as a complete 44-terminal footprint only after checking the official package drawing and terminal numbering. The supplied sources conflict between 34 and 38 I/O ports, so a reconstructed pin table is unsafe. Before fabrication, compare oscillator, reset, programming, power, ground, ADC, serial, and alternate-function pins against the exact NXP document. Include programming and recovery access in production-test hardware and fixture design.
Do not assume that a similarly named S08AC device is pin-compatible. MC9S08AC8MFGE is a useful comparison candidate because it appears in the site list, but its package suffix differs and the supplied data contains no verified cross-reference. Compare memory, pin functions, peripherals, electrical limits, clocking, package dimensions, firmware support, and lifecycle. If any pin changes, classify the move as a redesign rather than a drop-in replacement and plan PCB and firmware regression testing.
Keep analog-sensing routes away from switching nodes and high-current return paths, and place supported bypass components close to their assigned pins after the exact pinout is verified. Confirm the oscillator layout and grounding from the manufacturer recommendations because those details are absent from the supplied records. Validation should cover startup, reset, ADC readings, serial communication, programming, and supply noise. Do not freeze placement until all 44 package terminals and their alternate functions are confirmed.
合規資訊
A secondary verified technical record describes the device as RoHS compliant. No authoritative supplied data establishes REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status.
