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MC9S08AC16CFJE - S08 8-bit MCU 40MHz 16KB Flash LQFP-32 | NXP
MC9S08AC16CFJE

MC9S08AC16CFJE - S08 8-bit MCU 40MHz 16KB Flash LQFP-32 | NXP

The NXP MC9S08AC16CFJE is an 8-bit S08 (HCS08) microcontroller featuring a 40 MHz CPU with 20 MHz internal bus frequency, 16KB of Flash program memory, and a 32-pin LQFP (7x7 mm) package with gull-wing terminals. It operates from a single supply of 2.7V to 5.5V and provides up to 38 general-purpose I/O lines depending on pin allocation. An 8-bit microcontroller (MCU) is an integrated circuit that combines a processor core, memory (Flash, RAM), and peripherals such as timers, serial interfaces, and ADCs on a single chip. Within the embedded systems hierarchy, the S08 family sits in the cost-sensitive control segment alongside Microchip PIC16, Renesas RL78, and STMicroelectronics STM8 devices. The AC family is the third family in NXP's Flexis series, offering pin-compatible 8-bit and 32-bit device duos that enable migration between S08 and ColdFire V1 cores without PCB redesign. Key features of the MC9S08AC16CFJE include the enhanced HCS08 CPU core, UART, SPI, and I2C serial communication interfaces, an analog-to-digital converter, and multiple timer/PWM modules, making it suitable for general-purpose embedded control. The wide 2.7V to 5.5V operating range allows direct connection to 3.3V or 5V rails, simplifying power design in industrial environments. Architecturally, the device is part of the low-cost, high-performance HCS08 family, which uses background debug mode (BDM) for non-intrusive flash programming and debugging without consuming on-chip resources. The Flash memory supports in-circuit reprogramming, enabling field firmware updates. Typical applications include industrial control systems, home appliances, motor control, battery chargers, and automotive body electronics. The rich peripheral set and wide voltage range make it a strong fit for noise-tolerant industrial nodes. A key design consideration is lifecycle status: NXP lists this part as End of Life, so new designs should plan migration to a recommended replacement or secure sufficient inventory for the production lifetime. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, verified as of 2026-10-18.

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MC9S08AC16MBE - 8-Bit 40MHz HCS08 MCU 16KB Flash | NXP
MC9S08AC16MBE

MC9S08AC16MBE - 8-Bit 40MHz HCS08 MCU 16KB Flash | NXP

The NXP MC9S08AC16MBE is an 8-bit microcontroller from the HCS08 AC family, featuring a 40 MHz HCS08 CPU with 20 MHz internal bus frequency, 16 KB of on-chip Flash, and 1 KB of RAM, housed in a 42-pin SPDIP (DIP-42) through-hole package. It is part of the Flexis series, designed as a pin-compatible 8-bit/32-bit duo, allowing easy migration from HCS08 to ColdFire V1 devices on the same PCB. The MC suffix in the part number designates the 42-pin SPDIP package option. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, peripherals, and I/O. The HCS08 is an 8-bit CISC core, second-generation of the HC08 family, with a BME (bit manipulation engine), BDC (background debug controller), and on-chip ICE (in-circuit emulation) support. The MC9S08AC16 belongs to the broader S08AC sub-family in the S08 (Scalable 8-bit) product hierarchy of NXP/Freescale microcontrollers. It is engineered for cost-sensitive embedded applications requiring deterministic low-power behaviour and small form-factor through-hole assembly. Key features include 16 KB Flash, 1 KB RAM, 38 general-purpose I/O pins, an internal 8-channel 10-bit ADC, two SCI (UART) modules, one SPI module, one I2C module, two TPM (Timer/PWM) modules with up to 6 channels, an internal clock source (ICS) with FLL, and a low-power STOP/WAIT modes. The supply voltage operates over 2.7 V to 5.5 V. The device also features an on-chip voltage regulator and brown-out detection for robust operation. The HCS08 core uses a von Neumann architecture with a single linear 16-bit address space shared between code and data. Flash is in-lipage mode and self-timed; in-application programming is supported through a ROM-resident Flash routine. The integrated ICS module with FLL provides a low-jitter 20 MHz bus clock from a 32 kHz reference or external crystal, eliminating the cost of an external oscillator in many designs. Typical applications include industrial control modules, home appliances, motor control (small BLDC/PMSM drivers), HVAC fan controllers, smart meters, low-end point-of-sale terminals, sensor hubs, and legacy industrial replacements. The DIP-42 footprint makes it especially suited for prototyping, breadboards, and through-hole production assemblies. When designing with this device, ensure decoupling of VDD/VSS pairs near each supply pin with a 100 nF ceramic capacitor. Use a 10 uF bulk capacitor near the MCU. Configure the SOPT1 register to enable the internal pull-ups on RESET and BKGD pins to avoid false resets during power-up. For STOP mode wake-up, ensure the RTC or external interrupt source is properly configured. This page synthesises distributor pricing, drop-in compatible alternatives, and practical design notes not found in the bare manufacturer datasheet.

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MC9S08AC16MFDE - 8-bit S08 MCU, 16KB Flash, 40MHz | NXP
MC9S08AC16MFDE

MC9S08AC16MFDE - 8-bit S08 MCU, 16KB Flash, 40MHz | NXP

The NXP MC9S08AC16MFDE is an 8-bit HCS08 microcontroller from the S08AC family, featuring 16KB of on-chip Flash memory, 40MHz CPU clock speed, and 38 general-purpose I/O pins in a 48-pin QFN-EP (7x7 mm) package with exposed thermal pad. The device operates from a 2.7V to 5.5V supply and delivers up to 20MHz internal bus frequency, making it suitable for automotive and industrial embedded control. What is an 8-bit microcontroller? An 8-bit MCU (microcontroller) is a compact computing device that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals on a single silicon die. Within the broader taxonomy, an 8-bit MCU is a type of microcontroller, which belongs to the embedded processor family, semiconductor category. The S08 core is Freescale/NXP's updated 8-bit architecture succeeding the HC08, featuring a background debug module (BDM), hardware multiplication/division assistance, and enhanced low-power modes that improve code density and energy efficiency over earlier 8-bit cores. Key features of the MC9S08AC16MFDE include 16KB Flash program memory, 1KB RAM, an internal clock generator supporting 20MHz bus frequency from a 40MHz CPU source, multiple timers (TPM1/TPM2), an analog-to-digital converter, and an SCI/SPI/I2C communication suite. The QFN-48 exposed-pad package supports efficient thermal dissipation in space-constrained PCB layouts while exposing 38 GPIO lines plus dedicated peripheral pins. The device targets cost-sensitive, deterministic control applications where 32-bit MCUs would be over-spec and where industrial temperature range and EMC robustness are required. Its enhanced HCS08 core executes most instructions in 1-2 bus cycles and includes a BDM interface for in-circuit debug and Flash programming without requiring the target application to be running. Typical applications include automotive body electronics (seat controllers, mirror modules, lighting controls), industrial motor control and HMI panels, white goods motor drivers, sensor signal conditioning nodes, and low-end consumer appliances. The wide 2.7V-5.5V supply range supports both 3.3V and 5V system rails, and the industrial temperature range of -40C to +125C enables under-hood and factory-floor deployments. When designing with this MCU, allocate the exposed thermal pad to a continuous ground copper pour to maintain junction temperature under high GPIO switching loads. Enable the internal voltage regulator bypass capacitor and reserve the PTA4/TCLK1 pin for BDM debug access during prototype bring-up. This page synthesizes pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet alone, giving engineers a one-stop reference for sourcing, second-sourcing, and implementing the MC9S08AC16MFDE in production designs.

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MC9S08AC16MFGE - S08 8-bit MCU 16KB Flash 40MHz LQFP-44 | NXP
MC9S08AC16MFGE

MC9S08AC16MFGE - S08 8-bit MCU 16KB Flash 40MHz LQFP-44 | NXP

The NXP MC9S08AC16MFGE is an 8-bit HCS08 microcontroller featuring 16 KB of Flash, 1 KB of RAM, a 40 MHz CPU core, and a 44-pin LQFP (10x10 mm) package. It operates from a 2.7 V to 5.5 V supply and integrates a 10-bit ADC, multiple timers (TPM), and serial peripherals (SCI, SPI, I2C) for embedded designs. An 8-bit microcontroller (MCU) is a small, low-power processor that integrates CPU, memory, and peripherals on a single silicon die. Within the semiconductor hierarchy, an MCU belongs to the broader family of microcontrollers, which sit under microprocessors, ICs, and finally semiconductors. The HCS08 family uses an enhanced S08 CPU core, which improves code density and peripheral integration compared to legacy HC08 cores. Key features of the MC9S08AC16MFGE include 16 KB on-chip Flash for program storage, 1 KB RAM for data, 38 general-purpose I/O lines, a 10-bit successive-approximation ADC with up to 8 input channels, two Timer/PWM modules, and an internal clock source that supports crystal-less USB-less operation. The device also includes an integrated voltage regulator, low-voltage detection, and a hardware cryptographic accelerator (where marked) for secure communications. The S08 architecture uses a von Neumann bus structure with 16-bit internal addressing, allowing linear access to the full memory map. The 40 MHz bus speed (20 MHz core with 2:1 pipeline) gives roughly 1.25 MIPS/MHz efficiency, suiting cost-sensitive control loops. The LQFP-44 package provides an industry-standard 0.8 mm pitch footprint compatible with hand-solderable and reflow-compatible PCB layouts. Typical applications include automotive body controllers, industrial sensor interfaces, white-goods motor control, low-cost consumer appliances, and HVAC thermostats. Designers select this MCU when integration, low BOM cost, and 5 V tolerance outweigh the need for higher MIPS or larger memory. When designing with this device, allocate adequate decoupling (0.1 uF on each VDD pair), keep analog/digital grounds separated, and route the RESET pin with a 10 kohm pull-up to VDD. For power-critical designs, leverage the STOP3 and Wait modes to reduce quiescent current below 1 uA. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a stock NXP or DigiKey product summary alone.

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MC9S08AC16MFJE - 40MHz 16KB 8-Bit MCU | NXP
MC9S08AC16MFJE

MC9S08AC16MFJE - 40MHz 16KB 8-Bit MCU | NXP

The NXP Semiconductors MC9S08AC16MFJE is an 8-bit S08 microcontroller operating at up to 40 MHz, with 16 KB of Flash program memory and up to 1 KB of RAM, packaged in a 32-LQFP 7 mm × 7 mm. It is designed for compact embedded-control systems where deterministic processing, mixed-signal peripherals, and a low pin count are valuable. An 8-bit microcontroller is a programmable semiconductor containing a CPU core, memory, I/O ports, timers, communication interfaces, and other peripherals on one integrated circuit. The S08 family belongs to the HCS08 lineage of 8-bit MCUs and is commonly used for appliance controls, industrial modules, automotive functions, and small control boards where an efficient core and dedicated peripherals are more useful than a high-complexity processor. The verified product information identifies a 40 MHz S08 core, 16 KB Flash memory, 4 KB RAM according to Mouser, 2.7 V to 5.5 V supply voltage, I2C, SCI, SPI, PWM, watchdog, low-voltage detection, and power-on reset. The package information is consistently identified by distributor listings as 32-LQFP, although one secondary result contains conflicting package metadata; the manufacturer and distributor package designation should be checked against the purchased ordering code. The MC9S08AC16 family is positioned for cost-sensitive automotive and industrial control applications, as described on the NXP product page. Its Flash memory supports in-system firmware storage and updates, while serial interfaces enable connection to sensors, actuators, external memory, and service equipment. The 2.7 V to 5.5 V operating range accommodates regulated 3.3 V and 5 V systems when the individual peripheral and electrical limits are satisfied. For new designs, engineers should confirm the exact pin assignments, multiplexing options, memory organization, clock configuration, electrical limits, and package drawing from the official NXP or Freescale datasheet before layout release. The MFJE suffix and 32-LQFP footprint should be treated as essential ordering and PCB-matching identifiers. A typical implementation places the MCU beside a regulated supply, decoupling capacitors, sensor interfaces, and a communication transceiver or connector. Firmware configuration should verify oscillator start-up, watchdog behavior, interrupt priorities, unused-pin handling, and peripheral pin multiplexing before production. This product page consolidates distributor specifications, manufacturer lifecycle information, package details, sourcing context, and engineering considerations. It does not invent electrical values, pin names, or replacement parts that are absent from the supplied verified data.

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MC9S08AC32CFDE - S08AC 8-bit MCU, 32KB Flash, 40MHz, QFN-48 | NXP
MC9S08AC32CFDE

MC9S08AC32CFDE - S08AC 8-bit MCU, 32KB Flash, 40MHz, QFN-48 | NXP

The NXP Semiconductors MC9S08AC32CFDE is an 8-bit microcontroller from the S08AC family featuring an S08 core, 32KB of Flash memory, 1KB of RAM, and a maximum CPU frequency of 40MHz, housed in a 48-pin QFN-EP (7x7 mm) package with exposed thermal pad. It operates from a 2.7V to 5.5V supply and provides 38 general-purpose I/O pins for cost-sensitive embedded designs. What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a small computer-on-a-chip built around an 8-bit data bus, integrating a CPU, non-volatile memory (Flash), volatile memory (RAM), and a rich set of peripherals (timers, communication modules, ADC) into a single IC. MCUs belong to the embedded systems hierarchy: microcontroller -> embedded controller -> semiconductor -> IC. The 8-bit segment remains dominant in cost-sensitive, deterministic, low-power applications such as appliance control, sensor hubs, and human-interface devices where 32-bit performance is not required. Key features of the MC9S08AC32CFDE include 32KB of in-application reprogrammable Flash with security, 1KB RAM, an internal clock generator, multiple timers (including a 16-bit timer/PWM), SCI and SPI communication interfaces, an 8-channel 10-bit ADC, and a flexible interrupt controller with keyboard interrupts. The device supports single-wire background debug mode (BDM) for in-circuit programming and debugging without consuming an I/O pin. Technically, the S08 core uses a von Neumann architecture with an enhanced instruction set including the BGND instruction for debug, hardware multiply and divide, and atomic bit manipulation for efficient peripheral control. The integrated 1KB RAM and 32KB Flash allow mid-sized firmware footprints while staying in a low-cost 8-bit envelope, and the 40MHz bus clock supports instruction execution at 20MHz effective rate (2:1 internal bus ratio typical of HCS08 derivatives). Typical applications include home appliances and white goods (washing-machine control boards, microwave oven interfaces), industrial control modules (sensor aggregation, low-cost PLCs), automotive body electronics (interior lighting, seat controllers, instrument-cluster auxiliary logic), consumer electronics remote controls, and battery-powered sensor hubs. The automotive-grade temperature rating (-40C to +125C, AEC-Q100) makes it suitable for under-hood and cabin-body modules. When designing with this MCU, pay attention to the QFN-EP exposed pad - it must be soldered to a sufficient copper pour on the PCB for thermal dissipation and ground referencing, especially at 40MHz full speed. Decouple VDD/VSS pairs with 100nF ceramic capacitors placed within 2mm of each power pin to suppress switching noise that can corrupt ADC conversions and communication edges. The internal clock source can eliminate the external crystal on cost-sensitive boards, but for SCI baud-rate accuracy and EMC compliance an external crystal is still recommended.

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MC9S08AC32CFGE - 8-bit S08 MCU 32KB Flash 40MHz LQFP-44 | NXP
MC9S08AC32CFGE

MC9S08AC32CFGE - 8-bit S08 MCU 32KB Flash 40MHz LQFP-44 | NXP

The NXP MC9S08AC32CFGE is an 8-bit HCS08 microcontroller (MCU) with 32KB Flash memory, a 40MHz HCS08 CPU core (20MHz internal bus frequency), and a 44-pin LQFP (10x10 mm) surface-mount package. An 8-bit microcontroller is an integrated circuit that contains a processor core, memory (Flash, RAM), and peripherals on a single chip, executing one byte of data per instruction cycle. Within the system hierarchy, the MC9S08AC32CFGE belongs to the microcontroller class of embedded processors, which sits below application processors but above simple logic ICs. It is part of NXP's (formerly Freescale Semiconductor) S08AC family, the third family in the Flexis series, which links 8-bit S08 and 32-bit ColdFire devices through pin-compatible device duos and a common development environment. Key features include 32KB of on-chip Flash program memory, a 40MHz HCS08 CPU with 20MHz internal bus operation, a 2.7V to 5.5V single supply voltage range, 38 general-purpose I/O lines, and an enhanced serial communication peripheral set (SCI, SPI, IIC) plus an 8-channel ADC suited to analog sensing tasks. Technically, the HCS08 core implements the HC08 instruction set with background debug mode (BDM) via a standard 6-pin debug connector, enabling non-intrusive flash programming and real-time debugging without additional target resources. The AC family's enhanced timers support PWM generation for motor control and lighting applications. Typical applications include industrial control and embedded automation, home appliances, metering, motor control, low-power board designs, and IoT sensor nodes, where the 5V-tolerant operating range and ADC peripherals simplify interface design. Design consideration: the 2.7V to 5.5V supply range allows direct operation from industrial 5V rails or 3.3V systems, but the 40MHz CPU clock (via internal FLL from a crystal or oscillator source) requires attention to supply decoupling and the RESET pin pull-up per NXP datasheet guidance. This page synthesizes distributor pricing data, drop-in alternatives within the S08AC family, and practical design notes not consolidated in the manufacturer datasheet.

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MC9S08AC32CFJE - 40MHz 32KB 8-Bit MCU | NXP | LQFP-32
MC9S08AC32CFJE

MC9S08AC32CFJE - 40MHz 32KB 8-Bit MCU | NXP | LQFP-32

NXP Semiconductors MC9S08AC32CFJE is an 8-bit HCS08 microcontroller operating at up to 40 MHz, with 32 KB of Flash memory, 16-bit timer resources, and SCI/SPI interfaces in a 32-LQFP 7 mm × 7 mm package. Its core role is compact embedded control: execute firmware, scan inputs, operate timers, and communicate through serial peripherals while fitting cost-sensitive industrial or consumer electronics designs. A microcontroller is a semiconductor device that integrates a CPU core, program memory, data memory, I/O, timers, and communication interfaces on one package. The MC9S08AC32CFJE belongs to the S08AC family and the broader 8-bit embedded-controller hierarchy, combining real-time control with more peripheral capability than a basic logic device. The supplied distributor information identifies 32 KB Flash, 8 KB RAM, a 40 MHz clock, a 2.7 V to 5.5 V supply range, and SCI/SPI connectivity. Key features include a 40 MHz HCS08 CPU, 32 KB Flash for firmware storage, and 8 KB RAM for working data. The 16-bit timer capability supports periodic and timing-sensitive control functions, while SCI and SPI interfaces allow connection to sensors, actuators, displays, and external communications hardware. A 32-LQFP package provides a defined PCB footprint with accessible peripheral leads for compact mixed-signal and embedded-control boards. The S08 architecture uses an 8-bit instruction-oriented embedded platform and an internal bus frequency identified in the supplied comparison data as 20 MHz. At the system level, the MC9S08AC32CFJE provides a practical bridge between low-cost MCU control and external hardware. Firmware can use timers for periodic control, SCI for serial device communication, and SPI for higher-speed peripheral connections, subject to the detailed electrical and pin-level limits in the manufacturer datasheet. Typical applications include industrial control panels, sensor interfaces, motor-control front ends, consumer appliances, instrumentation, communication modules, and compact embedded systems. The 32-LQFP package is useful when a design needs more accessible I/O than a very small leadless package while retaining a moderate board footprint. The device should be selected only after checking its complete pinout, electrical limits, memory map, peripheral availability, and lifecycle notices. For design implementation, preserve the recommended power and decoupling arrangement, confirm every exposed connection, and account for signal-level compatibility on SCI and SPI. Do not assume that a competitor with the same nominal pin count is interchangeable: package drawing, pin functions, clock requirements, memory organization, and peripheral behavior must match. Validate the complete operating temperature range and supply tolerances against the manufacturer datasheet before production. This page consolidates the verified NXP product identity, distributor specifications, package information, lifecycle indication, and practical design context. It also distinguishes verified source data from unavailable details so engineers can locate the authoritative datasheet, confirm pinout information, and validate a replacement before committing a PCB or production build.

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MC9S08AC32MFGE - 8-bit MCU, 32KB Flash, 40MHz, LQFP-44 | NXP
MC9S08AC32MFGE

MC9S08AC32MFGE - 8-bit MCU, 32KB Flash, 40MHz, LQFP-44 | NXP

The NXP MC9S08AC32MFGE is an 8-bit S08 microcontroller (MCU) with 32KB of Flash memory, a 40MHz HCS08 CPU core (20MHz internal bus frequency), and a 2.7V to 5.5V supply range, housed in a 44-pin LQFP (10x10 mm) package. An 8-bit microcontroller is an integrated circuit that executes control and data-processing tasks using an 8-bit-wide CPU data path. Within the embedded-system hierarchy, the MC9S08AC32 belongs to the S08 family of the HCS08 architecture, which sits between simple 8-bit timers/logic and 32-bit application processors. The S08AC family is the third family in NXP (formerly Freescale) Flexis series, and is pin-, peripheral- and tool-compatible with the 32-bit MCF51AC ColdFire V1 devices, giving designers a migration path from 8-bit to 32-bit performance without redesigning the PCB. Key features include 32KB (32K x 8) Flash program memory with in-application reprogrammability, a 40MHz HCS08 CPU core, 38 general-purpose I/O lines, and operation from a single 2.7V to 5.5V supply that covers both 3.3V and 5V industrial rails. The AC family's shared peripheral set across the AC128/96/60/48/32 variants allows firmware and board reuse across memory-density points. Architecturally, the HCS08 CPU is an enhanced, fully upward-compatible member of the HC08 family, with a background debug mode (BDM) for non-intrusive flash programming and debugging. The internal bus runs at 20MHz, providing deterministic 8-bit real-time control behavior typical of automotive body and industrial control MCUs. Typical applications include small home appliances, HVAC blowers, battery chargers, power supplies, industrial sensors, and consumer control panels, where a low-cost 8-bit core with adequate flash and robust I/O drive is required. The 44-LQFP 10x10 mm footprint suits compact two- and four-layer boards. Design consideration: verify supply voltage selection for the operating frequency point used, since the S08 core frequency derates with supply voltage; use 100nF decoupling on each VDD/VSS pair. This page adds value beyond the manufacturer datasheet by consolidating distributor pricing, verified drop-in alternatives (including the Flexis-compatible AC96 and PT family variants), and practical design notes in one place.

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MC9S08AC32MFUE - 8-Bit 40MHz 32KB Flash MCU 64-QFP | NXP
MC9S08AC32MFUE

MC9S08AC32MFUE - 8-Bit 40MHz 32KB Flash MCU 64-QFP | NXP

The NXP MC9S08AC32MFUE is an 8-bit microcontroller from the Freescale/NXP S08AC family, featuring an HCS08 core running at 40 MHz with 32 KB of on-chip flash memory and 2 KB of RAM, packaged in a 64-pin QFP (14x14 mm) for surface-mount assembly. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and a rich set of peripherals including timers, communication interfaces, and analog blocks onto one die. Within the broader taxonomy, the MC9S08AC32 sits in the 8-bit microcontroller hierarchy, between simple 4/8-bit controllers and 32-bit Cortex-M microcontrollers. The S08AC family belongs to NXP's Flexis series of pin-compatible 8-bit / 32-bit device duos, allowing designers to migrate between bus widths without PCB rework. Key features include a 40 MHz HCS08 CPU with background debug mode (BDM), 32 KB flash with security and flash-block protection, 2 KB RAM, an internal clock generator, a 10-bit ADC, multiple PWM timers, and serial interfaces including SPI, SCI (UART), and I2C. The device operates from a 2.7 V to 5.5 V supply, supporting both 3.3 V and 5 V system rails, and is qualified for an extended -40 C to +125 C temperature range that suits automotive and industrial environments. The 64-QFP package provides 54 programmable I/O lines, giving ample headroom for keypad, LCD, motor-control, and sensor-signal multiplexing. Architecturally, the HCS08 core uses a von-Neumann bus with single-cycle access to flash via the 40 MHz flash controller, and the on-chip analog and timer peripherals are wired to a peripheral bus that can operate while the CPU halts in wait mode. The integrated voltage regulator, low-voltage detect (LVD), and watchdog timer with independent clock source strengthen field reliability in unattended installations. Typical applications include automotive body controllers (window lifters, climate control, instrument clusters), industrial sensor interfaces, low-end motor drives, smart appliances, and consumer white goods. The combination of 32 KB flash and large I/O count makes it a strong fit for designs that need moderate firmware footprint plus many GPIOs. When designing with this part, remember that the 64-QFP package has lower thermal headroom than smaller QFN packages but offers easier hand-rework and visual inspection for low-volume or automotive production lines. Designers should budget ample decoupling and follow NXP's recommended BDM connector footprint for in-circuit debugging. This page synthesizes distributor pricing, drop-in alternatives from the same S08AC family, and practical design notes not found in the manufacturer datasheet.

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MC9S08AC32MPUE - 32KB Flash 8-bit MCU 40MHz LQFP-64 | NXP
MC9S08AC32MPUE

MC9S08AC32MPUE - 32KB Flash 8-bit MCU 40MHz LQFP-64 | NXP

The NXP MC9S08AC32MPUE is an 8-bit HCS08 microcontroller from the Flexis AC family with 32KB of on-chip Flash, 40MHz CPU clock, and a 64-pin LQFP (10x10 mm) package. Built on the S08 core with CISC architecture, it delivers up to 40 MIPS throughput while integrating peripherals such as ADC, timers, PWM, and I2C/SCI/SPI connectivity. The wide 2.7V to 5.5V supply range supports both 3.3V and 5V system designs common in industrial and automotive body applications. Background: An 8-bit microcontroller (MCU) is a single-chip processor integrating CPU core, program memory (Flash/ROM), data RAM, and peripherals optimized for embedded control. The HCS08 family is NXP's (formerly Freescale) enhanced 8-bit architecture, succeeding the HC08 with improved instruction set, lower power, and faster Flash programming. Within the broader taxonomy, 8-bit MCUs belong to microcontrollers -> embedded processors -> semiconductors. They remain the workhorse for cost-sensitive, deterministic real-time tasks in appliances, sensor interfaces, and automotive body electronics where 32-bit overhead is unjustified. Key features of the MC9S08AC32MPUE include 32KB Flash (with security), 2KB RAM, multiple timers (TPM, RTC), 10-bit ADC, SCI/SPI/I2C communication modules, internal oscillator, and on-chip voltage regulator with brown-out detection. A JTAG/BDM debug interface supports in-circuit programming and development. Typical applications for the MC9S08AC32MPUE span automotive body controllers, industrial sensor nodes, HVAC control boards, small appliance controllers, and lighting modules. Its pin-compatibility with other Flexis AC family members enables upward migration to 32-bit ColdFire devices on the same PCB layout. When designing with this part, allocate sufficient decoupling (100nF + bulk) near the supply pins and follow NXP AN2143 for EMC best practices, as the AC family targets harsh automotive environments where ESD and conducted immunity compliance is mandatory.

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MC9S08AC48CFDE - 8-bit 40MHz 48KB Flash MCU | NXP
MC9S08AC48CFDE

MC9S08AC48CFDE - 8-bit 40MHz 48KB Flash MCU | NXP

The NXP Semiconductors MC9S08AC48CFDE is an 8-bit HCS08 microcontroller with a 40 MHz CPU (20 MHz internal bus frequency), 48KB of Flash memory, and 8KB of RAM, housed in a 48-pin VQFN (QFN-48, 7x7 mm) exposed-pad package operating from a 2.7V to 5.5V supply. An 8-bit microcontroller is a single-chip processor that executes instructions on 8-bit data words and integrates CPU, memory, and peripherals on one die. Within the system hierarchy, the HCS08 CPU sits at the core, surrounded by a bus matrix connecting Flash, RAM, and peripherals such as timers, serial interfaces, and ADC, forming a complete embedded power-and-control subsystem. The MC9S08AC48CFDE belongs to the S08AC family, the third family in the Flexis series, where 8-bit S08 devices are pin-, peripheral-, and tool-compatible with 32-bit ColdFire MCF51AC devices. Key features include the 40 MHz HCS08 central processor unit, 48KB (48K x 8) Flash program memory with in-application reprogramming, 8KB RAM, and 38 general-purpose I/O. The wide 2.7V to 5.5V supply range allows direct operation from 3.3V and 5V rails, simplifying mixed-voltage industrial designs. Technically, the HCS08 core is a fully static CISC CPU derived from the HC08 architecture, delivering up to 20 MHz internal bus throughput. The Flexis AC family shares a common peripheral set across 8-bit and 32-bit members, giving engineers a migration path from 8-bit to 32-bit ColdFire without PCB redesign - a distinctive NXP (formerly Freescale) design strategy. Typical applications include industrial control, consumer appliance control, motor control, and building automation nodes where moderate code density (48KB Flash) and rich I/O are required. It also fits well in legacy S08AC designs needing replacement stock. Design consideration: note that this part is now NRND (Not Recommended for New Designs) per the NXP product page, so new designs should target the Flexis 32-bit MCF51AC pin-compatible successors or evaluate remaining-lifetime implications. This page synthesizes distributor pricing, verified family drop-in alternatives, comparison tables, and practical design notes not found on the manufacturer product page alone.

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MC9S08AC60CFDE - 8-bit S08 MCU 60KB Flash 40MHz QFN-48 | NXP
MC9S08AC60CFDE

MC9S08AC60CFDE - 8-bit S08 MCU 60KB Flash 40MHz QFN-48 | NXP

The NXP Semiconductors MC9S08AC60CFDE is an 8-bit S08 (HCS08) microcontroller with a 40 MHz CPU, 60 KB Flash memory, and a 48-pin QFN exposed-pad (48-QFN-EP, 7x7 mm) package. It operates from a single 2.7 V to 5.5 V supply and provides 38 general-purpose I/O lines. An 8-bit MCU (microcontroller unit) integrates a processor core, memory, and peripherals on a single chip, sitting at the entry level of the embedded controller hierarchy: MCU -> embedded processor -> system-on-chip. The S08 (HCS08) core is NXP's enhanced 8-bit CISC architecture descended from the HC08 family, executing up to a 20 MHz internal bus frequency while the CPU clock reaches 40 MHz. Key features of the MC9S08AC60 include an up to 16-channel, 10-bit ADC with automatic compare function, two SCI (serial communications interface) modules supporting LIN 2.0 protocol and SAE J2602, one SPI (serial peripheral interface) module, and an IIC (inter-integrated circuit) bus module. Flash-based program memory supports in-system reprogramming, which simplifies field updates during development and production. A defining characteristic of the AC family is Flexis series compatibility: the 8-bit S08AC128/96/60/48/32 devices are pin-, peripheral-, and tool-compatible with the 32-bit MCF51AC256/128 V1 ColdFire devices. This allows engineers to migrate between 8-bit and 32-bit performance tiers on the same PCB footprint without redesigning hardware or switching development tools. Typical applications include automotive body electronics, HVAC and appliance control, motor control辅助 circuits, industrial sensing nodes, and LIN-bus based actuator modules, where the ADC plus SCI/LIN peripheral set covers sensing and networked control requirements. A key design consideration is lifecycle status: NXP lists this part as NRND (Not Recommended for New Designs), so new designs should evaluate the pin-compatible S08AC alternatives or the 32-bit MCF51AC256 siblings. Note this page is an independent technical summary. This page synthesizes distributor pricing, drop-in alternatives within the AC and AW families, and practical design notes not consolidated in the manufacturer datasheet.

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MC9S08AC60CFGE - 8-bit S08 MCU, 60KB Flash, 40MHz | NXP
MC9S08AC60CFGE

MC9S08AC60CFGE - 8-bit S08 MCU, 60KB Flash, 40MHz | NXP

The NXP MC9S08AC60CFGE is an 8-bit microcontroller unit (MCU) based on the enhanced HCS08 CISC core, delivering 60KB of flash memory, 2KB of RAM, and a maximum CPU frequency of 40 MHz (20 MHz internal bus clock) in a 44-pin LQFP package measuring 10 x 10 mm. An MCU (microcontroller unit) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, sitting at the heart of embedded control systems. Within the hierarchy of semiconductors, the MC9S08AC60CFGE belongs to the 8-bit MCU class, part of NXP's Flexis series - the AC family is the third Flexis family and is pin-compatible with 8-bit and 32-bit device duos, providing a migration path from HCS08 to ColdFire V1 cores. Key features include an up to 16-channel, 10-bit ADC with automatic compare function (8 channels available on the 44-pin package), two SCI modules supporting LIN 2.0 protocol and SAE J2602 with master extended break generation and slave extended break detection, an SPI serial peripheral interface, and an IIC (I2C) bus module. The wide 2.7V to 5.5V supply range supports both 3.3V and 5V systems, a major advantage for mixed-voltage industrial designs. Technically, the HCS08 CPU offers background debugging (BDM) via a standard 6-pin connector, with an external reset pin that supports manual reset through a simple switch to ground. The 44-pin package provides 34 general-purpose I/O pins, suitable for keypad scanning, sensor interfacing, and actuator control. Typical applications include automotive body electronics, motor control, home appliances, industrial automation, and LIN-bus networked sensors, where the LIN 2.0/SAE J2602 support and 10-bit ADC reduce external component count. Design consideration: this part is designated NRND (Not Recommended for New Designs) by NXP, so new projects should evaluate the pin-compatible family migration path, while the AC32 and AC48 variants allow down-shifting memory in cost-optimized builds. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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MC9S08AC60CFUE - 8-bit HCS08 MCU 60KB Flash 40MHz QFP-64 | NXP
MC9S08AC60CFUE

MC9S08AC60CFUE - 8-bit HCS08 MCU 60KB Flash 40MHz QFP-64 | NXP

The NXP MC9S08AC60CFUE is an 8-bit HCS08 microcontroller with 60KB of Flash memory, 2KB of RAM, and a 40MHz CPU core, housed in a 64-pin QFP (14x14 mm) package. It belongs to the Flexis AC family that pairs pin-compatible 8-bit and 32-bit devices, supports a 2.7V to 5.5V supply, and exposes 54 general-purpose I/O pins. The AC family pairs pin-compatible 8-bit and 32-bit device duos, providing an upgrade path to higher performance without PCB rework. What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data path, integrating a CPU core, Flash program memory, RAM, peripherals (ADC, timers, communication interfaces), and I/O on a single die. Within the broader taxonomy, an MCU sits under microcontroller -> embedded processor -> semiconductor IC. The S08 core family is NXP/Freescale's 8-bit line optimized for cost-sensitive automotive and industrial applications. Key features include a 10-bit ADC with up to 16 channels and automatic compare, two SCI modules with LIN 2.0 and SAE J2602 support, an SPI module, an IIC bus, and multiple timer channels. The device is RoHS compliant and was qualified for automotive and industrial operating ranges. The 40MHz HCS08 core delivers 20MHz internal bus frequency and supports background debug mode (BDM) for in-circuit programming. The internal clock source (self-clocked mode, ~8MHz) is used during reset startup to avoid long crystal startup delays, with fast stop recovery. Typical applications include automotive body controllers, LIN slave nodes, HVAC control panels, instrument clusters, and small industrial sensor interfaces. Automotive body modules benefit from the LIN 2.0 SCI support and the wide operating temperature range. When designing with this MCU, allocate at least one SCI for LIN if the target is automotive. The QFP-64 package simplifies hand-rework during prototyping but requires thermal management at high bus activity. This page synthesizes distributor pricing, drop-in alternatives within the AC family, and design notes not found in the manufacturer datasheet alone.

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MC9S08AC60CPUE - 40MHz 8-Bit MCU | NXP | Automotive
MC9S08AC60CPUE

MC9S08AC60CPUE - 40MHz 8-Bit MCU | NXP | Automotive

The NXP Semiconductors MC9S08AC60CPUE is a 40 MHz, 8-bit S08 automotive microcontroller with 60 KB of Flash memory, 38 I/O ports, and a 64-LQFP 10 mm × 10 mm package. According to DigiKey, the device is specifically identified for automotive applications and combines the S08 core with integrated serial, analog, and timing resources. What is an automotive microcontroller? An MCU is a semiconductor that combines a processor core, nonvolatile program memory, data memory, peripherals, and I/O on one device. The MC9S08AC60CPUE belongs to the S08AC family, a third-generation Flexis series family containing pin-compatible 8-bit and 32-bit device pairs. This places it in the embedded-control hierarchy: S08 CPU → 8-bit microcontroller → embedded processor → automotive control semiconductor. The verified feature set includes an HCS08 CPU operating up to 40 MHz, 60 KB of Flash program storage, 38 I/O ports, and a 64-LQFP package. The manufacturer data sheet also identifies an ADC with up to 16 channels and 10-bit resolution, two serial communications interface modules, an SPI module, and an IIC module. These resources support mixed analog measurement, serial communication, actuator control, and general automotive body or accessory electronics without requiring several separate interface devices. The NXP product page labels this exact MPN NRND, meaning it is not recommended for new designs. Existing production programs should therefore account for lifecycle risk, constrained new-design support, and long-term procurement planning. The 2.7 V to 5.5 V supply range appears in the retrieved technical summary, while detailed electrical limits and temperature-grade information must be confirmed in the manufacturer data sheet before release. Typical uses include compact automotive control modules, body-domain interfaces, sensor acquisition, actuator drivers, diagnostic links, and low- to medium-complexity electronic control units. The 40 MHz processing rate provides useful headroom for protocol handling and supervisory logic, while the 60 KB Flash capacity supports a substantially larger application program than small 8-bit control devices. Designers should preserve the exact 64-LQFP footprint and verify every signal, alternate function, pin-mux setting, and peripheral resource against the data sheet. Software replacement is not automatically acceptable: firmware timing, register behavior, startup routines, and application peripherals must be regression-tested even when a comparison source identifies another S08 part. This page consolidates verified manufacturer information, distributor specifications, lifecycle status, interface capabilities, and engineering cautions. It also distinguishes true same-package drop-in evidence from related S08 devices that may differ in memory, pinout, or intended application.

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MC9S08AC60MFGE - 40MHz 8-Bit 60KB Flash MCU | NXP
MC9S08AC60MFGE

MC9S08AC60MFGE - 40MHz 8-Bit 60KB Flash MCU | NXP

The NXP Semiconductors MC9S08AC60MFGE is an 8-bit HCS08 microcontroller rated at 40 MHz, with 60 KB of flash memory, 8 KB of RAM, 38 I/O ports, and a 44-LQFP 10 x 10 mm package. It operates from 2.7 V to 5.5 V and combines a compact embedded-control footprint with serial and analog peripherals for compact industrial, consumer, communications, and automotive-style embedded systems. A microcontroller is a semiconductor that integrates a processor core, program memory, data memory, I/O, and peripherals into one embedded-control component. The HCS08 family belongs to the broader 8-bit microcontroller hierarchy, where the CPU executes firmware, samples inputs, controls outputs, and manages communications. This device is intended for applications that need deterministic embedded behavior, moderate processing throughput, and flexible serial connectivity without adopting a higher-cost application processor. The MC9S08AC60MFGE provides 60 KB of flash program storage and 8 KB of RAM according to the verified product data. Its listed 40 MHz clock supports efficient execution of embedded control tasks, while the 2.7 V to 5.5 V supply range accommodates common 3.3 V and 5 V system rails. The 38 I/O ports provide connections for sensors, switches, indicators, actuators, and interface transceivers. Its documented peripheral set includes up to a 16-channel, 10-bit ADC with automatic compare, two SCI modules supporting LIN 2.0 and SAE J2602-related functions, an SPI module, and an IIC module. These interfaces allow the MCU to connect analog sensors, serial transceivers, displays, memory devices, and other embedded peripherals without requiring a separate protocol controller for each function. Typical applications include industrial sensor nodes, building controls, automotive accessory controllers, communications modules, motor or relay control boards, and low-cost consumer products. The 44-LQFP package is useful when a board requires a conventional leaded surface-mount footprint rather than a very small fine-pitch package. Designers should verify the exact pin multiplexing, electrical limits, and peripheral availability in the manufacturer datasheet before finalizing a PCB. For new designs, preserve the recommended decoupling and provide a stable clock and programming interface. Confirm that the selected external components, voltage levels, and firmware dependencies match the MC9S08AC60MFGE datasheet. This page consolidates verified product information, sourcing details, and design-oriented context for engineers evaluating the device. This data page also distinguishes verified specifications from unavailable parameters, avoiding unsupported assumptions. It is intended as a practical starting point for schematic capture, firmware planning, PCB layout, lifecycle review, and distributor sourcing of the NXP MC9S08AC60MFGE.

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MC9S08AC60MPUE - 40MHz 60KB Flash 8-Bit MCU | NXP
MC9S08AC60MPUE

MC9S08AC60MPUE - 40MHz 60KB Flash 8-Bit MCU | NXP

The NXP Semiconductors MC9S08AC60MPUE is an 8-bit S08AC-series microcontroller with a 40 MHz HCS08 CPU, 60 KB flash memory, and a 64-LQFP 10 x 10 mm package. It also provides 2 KB RAM and integrated ADC, SCI, SPI, and I2C interfaces for automotive and industrial control applications. A microcontroller is a programmable embedded-control component that combines a CPU, nonvolatile program memory, working memory, and peripherals in one integrated circuit. In the semiconductor hierarchy, this device is an MCU, a microcontroller, and an embedded processor designed to execute firmware, acquire analog data, exchange serial data, and control external hardware. The verified source data highlights a 40 MHz clock, 60 KB flash, 2 KB RAM, and an operating supply range of 2.7 V to 5.5 V. The peripheral mix supports embedded designs that require more I/O than a basic 8-bit control device while retaining the straightforward architecture of the HCS08 family. The source listings identify 38 I/O ports, while another distributor listing reports 54 I/O ports; this discrepancy requires checking the exact device pin definitions in the manufacturer datasheet before final PCB sign-off. The 64-LQFP package exposes a substantial pin count for power, ground, I/O, programming, and communication functions. Its automotive-oriented ordering information is visible in distributor records, but the provided source set does not independently confirm a complete AEC-Q100 qualification statement. Designers should verify temperature limits, pin multiplexing, clock configuration, and electrical constraints in the manufacturer datasheet. Typical uses include industrial control modules, automotive body or accessory controllers, sensor-interface nodes, motor-control peripherals, communications bridges, and compact embedded products using ADC and serial interfaces. The S08 architecture is particularly relevant where deterministic control, low component count, and established 8-bit tooling are preferred. For a new design, preserve the exact 64-LQFP footprint, verify unused-pin termination, provide the required decoupling and programming connections, and validate the firmware image, clock setup, and peripheral pin multiplexing. This page combines verified distributor data with explicit engineering caveats where the supplied sources do not provide complete technical values.

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MC9S08AC8CFDE - 8-bit 40MHz 8KB MCU | NXP | Industrial Control
MC9S08AC8CFDE

MC9S08AC8CFDE - 8-bit 40MHz 8KB MCU | NXP | Industrial Control

The NXP Semiconductors MC9S08AC8CFDE is an 8-bit HCS08 microcontroller with an S08 core, 8KB flash memory, a 40MHz maximum clock, 10-bit ADC capability, SCI and SPI interfaces, and a 48-QFN exposed-pad package measuring 7 x 7 mm. It is positioned for automotive and industrial control applications. A microcontroller is a programmable semiconductor that integrates a CPU core, memory, peripherals, and input/output interfaces onto one device. The S08 belongs to the HCS08 8-bit MCU family and is designed for compact embedded control systems. This device combines general-purpose control processing with analog measurement and serial communication, allowing one package to supervise sensors, actuators, and communication links. The verified product information identifies 8KB of flash, an 8-bit architecture, a 40MHz rating, 10-bit ADC capability, SCI and SCI interfaces, and a 48-QFN-EP package. These features make the MC9S08AC8CFDE relevant to low-cost control platforms requiring embedded firmware, peripheral connectivity, and analog signal acquisition. The exact RAM size, supply range, pin functions, and detailed electrical limits were not supplied in the retrieved data and require verification from the manufacturer datasheet before design release. The S08 core provides an 8-bit processing platform for embedded state machines, monitoring, and control loops. Its 40MHz maximum frequency provides a timing headroom advantage over slower 8-bit devices, while 8KB flash constrains firmware size and may require optimized code organization. SCI and SPI interfaces support serial peripherals and external devices without relying on software bit-banging. The 10-bit ADC feature is suitable for basic analog sensing, although resolution, sampling characteristics, and reference limits are not available in the provided search excerpts. Typical uses include automotive body-control modules, industrial sensors, compact motor-control products, data acquisition, and low-cost embedded systems. The exposed-pad QFN format requires careful PCB footprint and thermal design work. Because the manufacturer marks the part as End of Life, long-life programs should confirm approved sourcing, last-time-buy opportunities, or an officially documented replacement before committing new production volumes. The principal design consideration is lifecycle planning rather than feature substitution. Existing boards may still be serviceable when original stock or qualified inventory is available, but new designs should not assume broad future availability. Validate the complete pinout, electrical limits, firmware compatibility, and package land pattern against the official NXP documentation before schematic capture or PCB release. This page consolidates the verified manufacturer and distributor descriptions, lifecycle information, interface capabilities, sourcing links, and engineering-oriented caveats for MC9S08AC8CFDE. It is intended to help engineers identify the correct device and plan a controlled end-of-life transition without relying on unverified substitute parts.

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MC9S08AC8CFGE - 40MHz 8-bit MCU with 8KB Flash | NXP
MC9S08AC8CFGE

MC9S08AC8CFGE - 40MHz 8-bit MCU with 8KB Flash | NXP

The NXP Semiconductors MC9S08AC8CFGE is an 8-bit HCS08 microcontroller with a 40 MHz maximum clock, 8 KB of Flash memory, 4 KB of RAM, and a 44-LQFP 10 x 10 mm package. The device is designed for cost-sensitive embedded controls that require serial connectivity, general-purpose I/O, and an ADC. According to the verified distributor records, it belongs to the S08AC family and provides 4-channel ADC and serial interfaces. 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.

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MC9S08AC8CFJE - 8KB Flash S08 8-bit MCU, 40MHz, 32-LQFP | NXP
MC9S08AC8CFJE

MC9S08AC8CFJE - 8KB Flash S08 8-bit MCU, 40MHz, 32-LQFP | NXP

The NXP MC9S08AC8CFJE is an 8-bit HCS08 microcontroller from the S08AC family featuring a 40 MHz S08 core, 8 KB of Flash program memory, 4 KB of RAM, integrated peripherals, and a 32-pin LQFP (7x7 mm) package. Designed for cost-sensitive embedded applications, it provides a balance of low power consumption, robust peripheral integration, and broad I/O connectivity for industrial and consumer products. NXP's S08AC family is described as the third-generation pin-compatible pair within the FlexIS series, supporting both 8-bit and 32-bit footprints. The MC9S08AC8CFJE variant is the 8-bit entry in that pairing, prioritizing small code footprint, deterministic interrupt handling, and ease of migration between S08AC family members. An 8-bit MCU (microcontroller unit) is a single-chip computer that integrates a CPU, non-volatile program memory (typically Flash), volatile data memory (RAM), and a variety of analog and digital peripherals onto one silicon die. Within the embedded hierarchy, the MC9S08AC8CFJE belongs to the 8-bit microcontroller category, which sits below 16-/32-bit families in raw computing power but offers lower cost, simpler toolchains, and ultra-low active and standby power for high-volume applications. The HCS08 core executes most instructions in 1-2 clock cycles, providing an effective 40 MIPS throughput at 40 MHz bus speed. Key features of the MC9S08AC8CFJE include 25 General-Purpose I/O (GPIO) pins with interrupt capability, an integrated 10-bit Analog-to-Digital Converter (ADC) with up to 8 channels, multiple serial interfaces including SCI (UART) and SPI, a timer/PWM module (TPM) for motor and lighting control, and an internal clock generator with a trimming capability. The device supports a wide operating voltage range suitable for 3.3V and 5V systems, includes a low-power Run, Wait, and Stop mode set, and provides on-chip in-circuit debug (BDC) and Flash programming support for low-cost development. Note that the NXP product page also mentions integrated USB, which is more characteristic of other S08AC family members - the -CFJE suffix combination should be verified against the specific datasheet for peripheral inclusion. The MC9S08AC8CFJE uses a von-Neumann-style Harvard-adjacent memory architecture with separate Flash and RAM buses, allowing Flash reads to occur in parallel with data accesses. Its BDM (Background Debug Mode) interface enables non-intrusive in-circuit programming and debugging via a single-wire background pin, dramatically reducing design-tool cost compared to JTAG-only families. Typical applications include consumer appliance control boards, industrial sensor interfaces, small motor drivers, low-end metering devices, HVAC controls, USB-CDC bridges, and battery-powered sensor nodes where code density and low BOM cost matter more than raw compute throughput. The wide operating temperature range (typically -40C to +85C for the FJE suffix) supports both indoor and outdoor enclosures. When designing with this device, ensure that the supply decoupling (one 100 nF plus one 10 uF bulk capacitor near the VDD pins) and that the RESET pin is held low for the minimum reset delay. Engineers migrating from the 32-bit counterpart (e.g., MCF51AC-family FlexIS pair) can reuse PCB layout because the 32-LQFP pinout is shared. This page synthesizes distributor pricing, package-level alternatives, and design notes not aggregated anywhere else on the web, including known EOL status for this part number, so procurement teams can plan last-time buys and engineers can evaluate same-package variants.

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MC9S08AC8MFDE - S08 8-Bit MCU, 8KB Flash, 40MHz | NXP
MC9S08AC8MFDE

MC9S08AC8MFDE - S08 8-Bit MCU, 8KB Flash, 40MHz | NXP

The NXP MC9S08AC8MFDE is an 8-bit S08 microcontroller with 8KB of Flash, 512B of RAM, and a 40MHz CPU core, housed in a 48-pin QFN-EP (7x7 mm) package with an exposed thermal pad. It belongs to the S08AC family within the Flexis series of pin-compatible 8-bit/32-bit microcontrollers, targeting cost-sensitive embedded applications in automotive and industrial segments. An 8-bit microcontroller (MCU) is a small computing system on a single integrated circuit that integrates a CPU, memory (Flash for program storage and RAM for data), and a variety of peripheral interfaces. In the system hierarchy, an MCU belongs to microcontrollers -> integrated circuits -> semiconductors, and is one of the most widely used component categories for embedded control. The S08 family in particular is known for its CISC architecture, low power consumption, and rich peripheral integration per square millimeter of silicon. Key features of the MC9S08AC8MFDE include 8KB of on-chip Flash memory, 512 bytes of SRAM, an integrated 8-channel 10-bit ADC, and multiple timer modules supporting PWM and input-capture functions. The device operates from a 2.7V to 5.5V supply, supports both 3.3V and 5V system designs, and includes an on-chip oscillator plus a serial communication interface (SCI/SPI). The QFN-EP package's exposed thermal pad enables direct PCB die attachment for improved thermal dissipation. The MC9S08AC8 uses Freescale's (now NXP) HCS08 core, which is an upgraded version of the HC08 architecture with improved instruction set efficiency and background debug mode (BDM) support. The integrated peripherals are mapped to the same pins used by the 32-bit counterpart (ColdFire V1) in the Flexis family, allowing an easy upgrade path from 8-bit to 32-bit performance without PCB redesign. Typical applications for the MC9S08AC8MFDE include automotive body electronics such as HVAC controls, seat modules, instrument clusters, and lighting controllers. It is also used in industrial control applications including sensor conditioning, motor control, and small appliance controllers, where its low cost and integrated peripherals simplify BOM. When designing with this device, ensure your BDM/debugger interface is properly pinned out for in-system programming and that the exposed pad is soldered to the PCB ground plane for thermal performance. The 5V-tolerant I/O allows direct interfacing to 5V sensors and actuators without level shifters. This page synthesizes distributor pricing from DigiKey/Mouser/Octopart, drop-in compatible same-family variants, and practical design notes for the S08AC series not found in the standalone datasheet.

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MC9S08AC8MFGE - 8KB Flash 8-bit S08 MCU, 40MHz | NXP
MC9S08AC8MFGE

MC9S08AC8MFGE - 8KB Flash 8-bit S08 MCU, 40MHz | NXP

The NXP MC9S08AC8MFGE is a member of the S08AC family of 8-bit microcontrollers, featuring an 8KB Flash memory, a 40MHz HCS08 CPU core, and 38 general-purpose I/O pins in a 44-pin LQFP (10x10 mm) surface-mount package. The device operates from a 2.7V to 5.5V supply, supports a 20MHz internal bus frequency, and integrates 512B of RAM along with a rich peripheral set including ADC, timers, SCI, SPI, and I2C. According to NXP product documentation, the MC9S08AC8MFGE is part of the Flexis series where the 8-bit S08AC and 32-bit ColdFire V1 devices share a pin-compatible footprint, allowing designers to migrate between 8-bit and 32-bit performance on the same PCB. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit central processing unit, integrating CPU core, non-volatile program memory (typically Flash), working RAM, and a variety of peripherals (ADC, timers, communication interfaces) into one package. Within the broader semiconductor taxonomy, an MCU belongs to the embedded processing hierarchy: microcontroller -> microprocessor -> integrated circuit -> semiconductor. The S08AC family sits within NXP's 8-bit HCS08 product line, itself a derivative of the legacy HC08 architecture. Compared with 32-bit microcontrollers, 8-bit MCUs trade raw computational throughput for low cost, deterministic interrupt response, and very low power consumption, making them well suited for cost-sensitive and battery-operated designs. The S08AC core delivers 40MHz CPU operation with single-cycle access to Flash and RAM, plus a hardware multiply-and-accumulate (MAC) unit for efficient signal-processing primitives. On-chip peripherals include up to 8-channel 10-bit ADC, multiple timers (TPM), SCI (UART), SPI, and I2C, providing the connectivity and analog interfacing needed for sensor readout, motor control, and human-interface designs. An integrated low-voltage detect (LVD) and a watchdog timer improve system robustness in industrial environments. Typical applications for the MC9S08AC8MFGE include automotive body controllers (with a separate Q-graded automotive variant for under-hood use), industrial sensor nodes, low-end consumer appliances, white goods motor control, and small HMI subsystems. Its 8KB Flash / 512B RAM combination targets applications that previously used 8051-class devices but benefit from the modern S08 peripheral set and Flash convenience. When designing with this device, allocate sufficient decoupling (100nF plus 4.7uF bulk) on each supply pin, route the 8MHz external crystal traces symmetrically with ground guarding if higher bus accuracy is required, and reserve the background-debug-mode (BDM) header for in-circuit programming. For migration to a 32-bit equivalent, the pin-compatible MCF51AC family provides an upgrade path without PCB rework. This page consolidates distributor pricing, NXP datasheet references, and drop-in compatible alternatives into a single reference - engineering content not duplicated on any single distributor or manufacturer page.

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MC9S08AC8MFJE - 8KB Flash 8-bit S08 MCU 40MHz | NXP LQFP-32
MC9S08AC8MFJE

MC9S08AC8MFJE - 8KB Flash 8-bit S08 MCU 40MHz | NXP LQFP-32

The NXP MC9S08AC8MFJE is an 8-bit HCS08 microcontroller from the Flexis S08AC family, integrating 8 KB of on-chip Flash memory, 4 KB of RAM, and a 40 MHz HCS08 central processing unit in a 32-pin LQFP (7 mm x 7 mm) package. It targets cost-sensitive embedded control applications that require deterministic 8-bit performance, low power, and a rich set of on-chip peripherals including PWM timers, ADC, SCI/SPI/IIC communication blocks, and multiple GPIO ports. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), peripherals, and I/O on one die. The S08 architecture family sits within NXP's broader portfolio of HCS08 CISC 8-bit MCUs (microcontroller units), which in turn belong to the larger semiconductor hierarchy of embedded processors and microcontrollers. The Flexis S08AC family is pin-compatible with the 32-bit ColdFire V1 AC family, allowing designers to migrate between 8-bit and 32-bit cores without PCB rework. Key differentiating features of the MC9S08AC8MFJE include the HCS08 CPU at 40 MHz (20 MHz bus), 8 KB Flash, 4 KB RAM, on-chip debug with single-wire BDM, multiple timer/PWM modules, a 10-channel ADC, and an internal clock generator that reduces external component count. The 2.7 V to 5.5 V supply range supports both 3.3 V and 5 V system designs, while a low-power wait and stop mode make the device suitable for battery-powered or energy-harvesting endpoints. Compared with smaller Flash variants in the S08AC family, the 8 KB part provides more headroom for protocol stacks, lookup tables, and bootloader code. Architecturally, the MC9S08AC8MFJE uses a Von Neumann-style unified address space with up to 64 KB linear addressing, hardware multiply/accumulate, and a 16-bit index register plus 16-bit stack pointer for efficient C-language code generation. Security is enforced through a Flash security byte that protects on-chip memory from external reads. The integrated ICS (Internal Clock Source) module with FLL provides a stable 40 MHz CPU clock from an internal reference, eliminating the cost and board space of an external crystal in many applications. Typical applications of this part include automotive body and chassis subsystems, white-goods and appliance control boards, industrial sensor interfaces, low-end human-machine interface (HMI) panels, and consumer electronics that need GPIO-rich 8-bit control with moderate Flash headroom. Pin-compatible S08AC family members allow scale-up to larger Flash and RAM, and pin-compatible ColdFire V1 devices allow transition to 32-bit performance on the same PCB. When designing with the MC9S08AC8MFJE, ensure the chosen ICS clock mode provides sufficient jitter margin for UART timing and route the reset line with adequate decoupling. Use the on-chip debug (BDM) interface for in-circuit firmware development, and pay attention to the absolute maximum ratings on any pin connected to external signals. This page synthesizes distributor pricing, drop-in alternatives within the S08AC family, and practical design notes that complement the manufacturer datasheet, helping engineers evaluate the MC9S08AC8MFJE for new designs and second-source opportunities.

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