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MC68HC16Z1CAG16 - 16MHz 16-Bit ROMless MCU 144-LQFP | NXP
MC68HC16Z1CAG16

MC68HC16Z1CAG16 - 16MHz 16-Bit ROMless MCU 144-LQFP | NXP

The NXP MC68HC16Z1CAG16 is a 16-bit ROMless microcontroller from the M68HC16 family, built on the CPU16 core and operating at 16 MHz, housed in a 144-pin LQFP package (20x20 mm). The device is upwardly code-compatible with the long-established M68HC11 8-bit family, allowing existing firmware to migrate with minimal effort while gaining 16-bit data paths and addresses. An M68HC16 microcontroller is a high-speed 16-bit control unit that combines high-performance data manipulation capabilities with powerful peripheral subsystems. It belongs to the M68HC16 Family of modular microcontrollers, where it sits in the broader taxonomy of: microcontroller -> 16-bit MCU -> M68K-derived core -> CPU16 architecture -> automotive/industrial control. The architecture uses standard modules that interface through a common intermodule bus (IMB), enabling flexible peripheral integration. Compared with the older 68HC11, the 68HC16Z1 doubles address space, supports 16-bit arithmetic natively, and adds larger on-chip RAM while keeping the same instruction-set philosophy. Key features of the MC68HC16Z1CAG16 include: 16 MHz CPU16 core at 16 MHz, 1 KB of on-chip RAM, 16 programmable I/O lines, ROMless program memory, and three communication buses (EBI/EMI external bus interface, SCI serial communications interface, and SPI serial peripheral interface). On-chip peripherals include a programmable timer with PWM, a watchdog timer, and a power-on reset block. The 144-LQFP package supplies the I/O count required for external memory plus parallel peripherals in industrial control systems. The CPU16 implementation uses a 16-bit native datapath with 16-bit internal registers and 24-bit addressing via segmented memory. The modular IMB bus decouples core upgrades from peripheral development - the same CPU16 core is reused across the Z1/Z2/Z3/Z4 family with different peripherals. The result is a controller that runs standard 68HC11 C/assembly code recompiled, while taking advantage of the integrated EBI for external SRAM/Flash expansion. Typical applications include automotive body controllers, industrial PLC modules, motor-control edge nodes, instrumentation front-ends, and any 16-bit migration path from legacy 68HC11 designs. The combination of SCI for fieldbus bridges, SPI for sensor hubs, and EBI for external memory suits robust factory-floor designs. Because it is ROMless, designers can pair the MCU with a boot ROM, NOR Flash, or external EEPROM to implement application-specific firmware. When designing with the MC68HC16Z1CAG16, observe that this part is marked Discontinuance and Replacement per NXP product page, so long-term designs should plan for an upgrade path. Ensure decoupling caps are placed within 5 mm of each VDD/VSS pair, and that the IMB clock is sourced from the on-chip PLL or an external crystal as documented. Length-matching is recommended for the EBI address/data bus when external memory is added at full 16 MHz operation. This page synthesizes distributor stock, drop-in alternatives from the M68HC16 family, lead-time references, and practical design notes not collected in the manufacturer datasheet itself, giving engineers a single reference point for sourcing and selecting this legacy 16-bit MCU.

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MC68HC16Z1CAG25 - 16-Bit 25MHz CPU16 MCU, 1KB RAM | NXP
MC68HC16Z1CAG25

MC68HC16Z1CAG25 - 16-Bit 25MHz CPU16 MCU, 1KB RAM | NXP

The NXP (formerly Freescale/Motorola) MC68HC16Z1CAG25 is a high-speed 16-bit microcontroller (MCU) based on the CPU16 core, operating at up to 25 MHz, housed in a 144-pin LQFP (20x20) package. It combines a true 16-bit central processing unit with powerful peripheral subsystems, is ROMless (external memory required), integrates 1 KB of on-chip RAM, and supports 16 general-purpose I/O lines. The device is built up from standard modules interconnected through a common Intermodule Bus (IMB), and is code-compatible with the popular M68HC11 family, easing migration for legacy 8-bit designs. What is a 16-bit microcontroller? A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and peripherals. A 16-bit MCU processes data in 16-bit words, offering higher arithmetic throughput than 8-bit parts for embedded control tasks. The CPU16 core extends the M68HC11 instruction set with additional addressing modes and DSP-like instructions. Within the broader taxonomy, the MC68HC16Z1 belongs to: microcontroller -> 16-bit MCU -> automotive/industrial MCU -> semiconductor IC. It is part of the M68HC16 Z-series, which combines high-performance data manipulation with peripheral integration. Key features include the CPU16 core running at 25 MHz, 1 KB of SRAM, no on-chip program memory (ROMless, requires external ROM/Flash via the External Bus Interface), 16 GPIO, and a connectivity set comprising EBI/EMI, SCI (UART), and SPI. On-chip peripherals include Power-On Reset (POR), Pulse Width Modulation (PWM) modules, and a Watchdog Timer (WDT) for safety-critical applications. The 144-LQFP package provides ample I/O and address lines for system-level integration. Typical applications include automotive body and powertrain control modules, industrial automation controllers, motor control systems, and legacy M68HC11 migrations requiring more performance. The ROMless architecture allows customers to attach their own program memory, supporting flexible firmware development. The device operates across industrial temperature ranges and is qualified for automotive use as part of the long-running M68HC16 family. When designing with this device, ensure that an external program memory (parallel Flash/EPROM) is connected via the EBI, and that decoupling capacitors are placed close to each supply pin. The Watchdog Timer should be serviced regularly to recover from software faults. Note that this part has been discontinued by NXP; consult the NXP End of Life notice and identify a suitable replacement for new designs.

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MC68HC16Z1CEH16 - 16MHz CPU16 MCU 1K RAM ROMless 132-PQFP | NXP
MC68HC16Z1CEH16

MC68HC16Z1CEH16 - 16MHz CPU16 MCU 1K RAM ROMless 132-PQFP | NXP

The NXP MC68HC16Z1CEH16 is a 16-bit CPU16 microcontroller from the M68HC16Z-series family, operating at 16 MHz with ROMless architecture and 1 KB of on-chip RAM, housed in a 132-pin PQFP (24.13 x 24.13 mm) package. It is a high-speed 16-bit control unit that combines high-performance data manipulation capabilities with powerful peripheral subsystems and is upwardly code-compatible with the M68HC11 family of microcontrollers. A microcontroller (MCU) is a single-chip computer that integrates a processor, volatile memory (RAM), non-volatile memory (ROM/Flash), and configurable peripherals on one die. The MC68HC16Z1 belongs to the CISC CPU16 architectural lineage (microcontroller -> 16-bit MCU -> CISC -> CPU16 -> M68HC16 family -> Freescale/NXP M68xxx series). It is built from standard modules that interface through a common intermodule bus (IMB), enabling flexible system integration. Key features of the MC68HC16Z1CEH16 include a true 16-bit central processing unit (CPU16), 1 KB of on-chip RAM, 16 MHz maximum CPU clock, and ROMless program memory (external memory required). The device supports 3.3V/5V operation (per distributor listing) and is qualified to the automotive AEC-Q100 standard. Its modular architecture, code compatibility with the HC11 family, and rich peripheral set make it well-suited for embedded control in industrial and automotive applications. Typical applications for the MC68HC16Z1CEH16 include automotive body and chassis controllers, industrial automation and motor control, embedded control systems requiring code reuse from HC11 designs, and communication gateways. Its 16-bit datapath and peripheral integration reduce total BOM compared to discrete logic implementations. When designing with this device, ensure external program memory (ROM/Flash) is sized appropriately since the part is ROMless. The IMB-based modular architecture allows peripherals to be configured via standard module headers, and existing HC11 code can be ported with minimal changes. Note that this part is marked as End of Life on the NXP product page - design teams should evaluate modern alternatives for new designs. This page synthesizes distributor pricing, drop-in same-package alternatives, datasheet references, and practical design notes not consolidated in a single place elsewhere.

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MC68HC16Z1CEH20-FR - 16-Bit 20MHz HC16 MCU ROMless 132-PQFP | NXP
MC68HC16Z1CEH20-FR

MC68HC16Z1CEH20-FR - 16-Bit 20MHz HC16 MCU ROMless 132-PQFP | NXP

The NXP MC68HC16Z1CEH20-FR is a 16-bit CPU16 microcontroller operating at 20 MHz, supplied in a 132-pin PQFP package (24.13 x 24.13 mm), with no on-chip program memory (ROMless) and 1 Kbyte of on-chip RAM. It belongs to the M68HC16 Z-series family, combining high-performance data manipulation with powerful peripheral subsystems, and is upwardly code-compatible with the 68HC11 family. What is a CPU16 microcontroller? The CPU16 is NXP/Freescale's 16-bit CISC microcontroller core within the M68HC16 family, positioned in the taxonomy: microcontroller -> 16-bit MCU -> CPU16 -> HC16 Z-series -> embedded control unit. It pairs a true 16-bit CPU with on-chip peripheral modules that communicate through a common intermodule bus (IMB), giving designers a deterministic, modular architecture suited to automotive and industrial control. Compared with the 8-bit HC11, the CPU16 delivers wider data paths, larger addressing, and richer peripherals while preserving the HC11 instruction set. Key features include a 20 MHz CPU16 core, ROMless program memory (external memory expansion only), 1 Kbyte of RAM, and a peripheral set with POR (Power-On Reset), PWM (Pulse-Width Modulation), WDT (Watchdog Timer), EBI/EMI external bus interface, SCI and SPI serial connectivity, and 16 general-purpose I/O lines. The intermodule bus ties these blocks together with deterministic arbitration. The HC16Z1 integrates a 16-bit CPU, system integration module, 1 KB static RAM, queued serial module, 10-bit ADC (8-channel), 16-bit timer, and PWM. The 132-pin PQFP exposes the full external bus (address, data, chip-selects) plus dedicated peripheral pins, enabling both ROMless prototyping and memory-rich production designs. Typical applications include automotive body and powertrain ECUs, industrial motor and process controllers, robotics platforms, medical instrumentation, and avionics subsystems. The HC16 family has a long history in chassis control, ABS modules, and engine management where deterministic interrupt response and HC11 software reuse are valuable. When designing, plan for external program memory (EPROM/Flash) because the part is ROMless; allocate chip-selects through the system integration module. Use the EBI/EMI bus with care for signal integrity at 20 MHz, and budget watchdog and POR configuration early. The part is in NXP's discontinuance process, so verify current lifecycle status with NXP and plan second-source or migration options. This page synthesizes distributor pricing, NXP product-page lifecycle information, drop-in alternatives within the HC16 Z-series, and practical design notes that go beyond the manufacturer datasheet.

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MC68HC16Z1CEH25 - 16-Bit HC16 MCU 25MHz ROMless 132-PQFP | NXP
MC68HC16Z1CEH25

MC68HC16Z1CEH25 - 16-Bit HC16 MCU 25MHz ROMless 132-PQFP | NXP

The NXP MC68HC16Z1CEH25 is a 16-bit HC16 microcontroller IC running at 25 MHz in a 132-pin PQFP package (24.13x24.13 mm), supplied in Tray packaging and qualified to AEC-Q100 for automotive applications. It is a ROMless device with 1 KB of on-chip RAM and 16 programmable I/O lines, supporting EBI/EMI, SCI, and SPI connectivity through a common intermodule bus (IMB) architecture that integrates standard on-chip peripheral modules. What is an HC16 microcontroller? The HC16 is a 16-bit CISC microcontroller family originally developed by Motorola and now produced by NXP (formerly Freescale). It sits within the broader 68k microcontroller family hierarchy: MCU -> 16-bit MCU -> CISC MCU -> HC16/CPU16. The HC16 family is upwardly code-compatible with the popular 68HC11 family, allowing existing 68HC11 firmware to be migrated with minimal changes. The architecture uses a true 16-bit CPU with a unified instruction set optimized for embedded control and high-performance data manipulation tasks. Key features of the MC68HC16Z1CEH25 include a CPU16 core with 25 MHz maximum operating frequency, 1 KB of SRAM, 16 general-purpose I/O pins, an external bus interface (EBI/EMI), one SCI (serial communication interface), one SPI (serial peripheral interface), power-on reset (POR), pulse-width modulation (PWM) outputs, and a watchdog timer (WDT). The ROMless design means external program memory must be connected via the external bus interface, providing flexibility for code updates and large firmware images. The MC68HC16Z1CEH25 operates from a dual-voltage 3.3V/5V supply, allowing it to interface with both 3.3V and 5V external logic without level shifters. The 132-pin PQFP (Plastic Quad Flat Pack) package provides ample pins for the EBI, multiple serial interfaces, PWM outputs, and GPIO. AEC-Q100 qualification makes it suitable for automotive under-hood and body electronics, while its industrial temperature range and rugged CMOS process support demanding embedded applications. Typical applications include automotive body control modules, industrial motor control, HVAC controllers, and legacy 68HC11 migration designs. The ROMless architecture allows factory calibration data storage in external flash, while the SCI/SPI/EBI interfaces support sensor networks and host communication. When designing with this device, ensure proper decoupling close to the power pins and validate timing margins on the external bus at 25 MHz. For new designs consider the MC9S12 or S12ZV family which provides modern peripherals at lower cost. This page synthesizes distributor stock and pricing, AEC-Q100-qualified drop-in alternatives, and practical design notes not found in the standalone datasheet.

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MC68HC16Z1CPV16 - 16MHz 16-Bit CPU16 MCU ROMless 144-LQFP | NXP
MC68HC16Z1CPV16

MC68HC16Z1CPV16 - 16MHz 16-Bit CPU16 MCU ROMless 144-LQFP | NXP

The NXP MC68HC16Z1CPV16 is a 16-bit CPU16 microcontroller from the M68HC16 Z-series, operating at 16 MHz with a ROMless memory architecture and housed in a 144-pin LQFP (20x20) surface-mount package. It is part of the high-speed 16-bit control units that are upwardly code-compatible with the M68HC11 family of microcontrollers, combining high-performance data manipulation with powerful peripheral subsystems connected through a common Intermodule Bus (IMB). What is a CPU16 microcontroller? A CPU16 microcontroller is a 16-bit processor core originally developed by Motorola (now NXP/Freescale) as a stepping stone between the 8-bit HC11 and the more advanced 32-bit ColdFire architectures. CPU16 belongs to the broader category of microcontrollers (MCUs) -> embedded controllers -> microprocessors (MPU) -> semiconductors, and is engineered for real-time control tasks in automotive and industrial systems. Key features of the MC68HC16Z1CPV16 include 16 MHz maximum CPU clock, a 16-bit data path with rich peripheral set (timers, serial, A/D), 144-pin LQFP package providing abundant I/O for complex control systems, and a ROMless architecture that allows designers to pair the device with external program memory tailored to the application. Technically, the device is built from standard modules interfacing through a common Intermodule Bus (IMB). Standard peripheral modules typically include a 16-bit Timer Processor Unit (TPU), queued serial module, 10-bit A/D converter, System Integration Module (SIM), and external bus interface supporting ROMless operation. Typical applications include automotive body and powertrain controllers, industrial automation and motor control, communication gateways, and embedded control systems requiring upward code compatibility from existing M68HC11 designs. Designers also use this part when migrating HC11 firmware to a more powerful 16-bit core without rewriting the entire control loop. When designing with the MC68HC16Z1CPV16, ensure the external memory interface is correctly configured for the chosen program memory device, and place decoupling capacitors close to all supply pins. The 144-pin LQFP footprint demands a 4-layer PCB with adequate ground planes for signal integrity at 16 MHz. This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical design notes not typically collected in a single manufacturer datasheet snapshot.

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MC68HC16Z1MAG16 - 16-Bit 16MHz ROMless MCU | NXP
MC68HC16Z1MAG16

MC68HC16Z1MAG16 - 16-Bit 16MHz ROMless MCU | NXP

The NXP Semiconductors MC68HC16Z1MAG16 is a 16-bit CPU16 HC16 microcontroller operating at up to 16 MHz, with 1 KB of RAM and no embedded ROM, in a 144-lead LQFP package measuring 20 mm by 20 mm. It is an automotive-grade, ROMless control device identified by distributor listings as part number MC68HC16Z1MAG16. A microcontroller is a programmable semiconductor that integrates a central processing unit, memory, I/O, timers, interrupts, and communication peripherals on one package. The HC16 architecture provides a true 16-bit CPU and standard functional modules connected through an intermodule bus. The MC68HC16Z1 is described by NXP as a high-speed control unit with upward code compatibility with the 68HC11 family, making it relevant to embedded industrial, automotive, and legacy equipment designs. The verified product information identifies the CPU16 architecture, 16-bit processing, 16 MHz operation, ROMless configuration, 1 KB RAM, 5 V supply, automotive temperature grade, and 144-pin LQFP package. Because the device is ROMless, external program memory is required to store executable firmware. The limited 1 KB RAM also makes external working-memory support a key system-level consideration when processing larger data structures or buffers. The 68HC16Z1 architecture combines data-manipulation capability with peripheral subsystems. NXP describes its modules as communicating through a common intermodule bus, allowing the CPU and dedicated subsystems to exchange information within one integrated controller. This modular organization is useful for control systems that need deterministic embedded behavior, multiple I/O resources, and compatibility with an established 68HC software ecosystem. Typical uses include industrial control equipment, automotive electronic modules, motor and actuator controllers, embedded instrumentation, and legacy 68HC11-compatible products. Final suitability depends on external memory, timing, peripheral availability, electrical limits, and software support that must be confirmed from the complete manufacturer datasheet before design release. The most important design consideration is that this is not a pin-compatible modern MCU with abundant internal memory. Engineering teams should preserve external bus, address, timing, and memory interfaces from the original design and verify startup, interrupt, and peripheral migration requirements. Firmware development also requires suitable tools and libraries because the processor and peripheral ecosystem are legacy-oriented. This page consolidates verified manufacturer and distributor information, lifecycle status, package characteristics, sourcing links, and engineering caveats. It does not invent unavailable electrical limits, pin assignments, memory maps, pricing, or replacement claims; missing engineering data remains explicitly identified for validation against the manufacturer documentation.

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MC68HC16Z3BCPV25 - 16MHz HC16 MCU, 4KB Mask ROM, 144-LQFP
MC68HC16Z3BCPV25

MC68HC16Z3BCPV25 - 16MHz HC16 MCU, 4KB Mask ROM, 144-LQFP

The NXP (formerly Freescale) MC68HC16Z3BCPV25 is a 16-bit HC16 microcontroller with a 16 MHz CPU core, 4 KB of mask ROM, and 144-LQFP (20x20 mm) surface-mount packaging, supplied by Rochester Electronics as an authorized long-term stock holder. The device belongs to the M68HC16 family, which extends the Motorola/Freescale M68HC11 architecture to a 16-bit data path with an enhanced instruction set targeting automotive powertrain, body electronics, and industrial control applications. What is an HC16 microcontroller? An HC16 is a 16-bit CISC microcontroller in the Freescale/NXP M68HCxx family that combines a 16-bit CPU (CPU16) with peripheral modules such as a 16-bit timer, queued serial module (QSM), system integration, and on-chip memory. The family bridges 8-bit HC11 designs and 32-bit ColdFire devices, providing real-time deterministic performance for embedded control while keeping an instruction-set-upward-compatible developer experience. Key features of the MC68HC16Z3BCPV25 include a 25 MHz maximum bus frequency (CPV25 speed grade), 4 KB of factory-masked ROM for program storage, RAM and external bus expansion capability, an integrated 16-bit timer processor, a queued serial module (QSM) supporting SPI and SCI/UART, and a 16-channel analog-to-digital converter. The 144-LQFP package provides 144 user I/O pins including address, data, and peripheral expansion buses. Architecturally, the MC68HC16Z3 uses the CPU16 core with a 16-bit internal data path and 20-bit address bus, supporting up to 1 MB of external memory. The masked-ROM variant (suffix "BCPV25") is intended for high-volume production where the program is committed during wafer fabrication, lowering per-unit cost in exchange for a high NRE mask charge. Typical applications include automotive powertrain control units (engine control, transmission), body electronics (instrument cluster, body control module), industrial motor drives, and long-life industrial controllers that require a mature 16-bit architecture with decades of legacy code support. The masked-ROM variant is specifically aimed at high-volume OEM production where the program is final and quantity justifies the mask charge. When designing with the MC68HC16Z3, consider that masked-ROM parts cannot be re-programmed in-circuit - use the EPROM/Flash variant (CEPV/VPV suffixes) for prototypes. Ensure the 5V supply is well decoupled and that the high-speed 16 MHz bus signals follow controlled-impedance layout rules to avoid metastability on external memory accesses. This page synthesizes distributor pricing, Rochester Electronics long-term stock status, and drop-in alternatives, plus practical design notes for migrating off the masked-ROM variant to Flash-based siblings for new designs.

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MC68HC705C4ACP - 8-bit HC05 MCU 40-Pin DIP | Motorola/Freescale
MC68HC705C4ACP

MC68HC705C4ACP - 8-bit HC05 MCU 40-Pin DIP | Motorola/Freescale

The Motorola (now NXP/Freescale) MC68HC705C4ACP is a member of the low-cost, high-performance M68HC05 Family of 8-bit microcontroller units (MCUs) with one-time-programmable EPROM program memory, supplied in a 40-pin plastic dual in-line package (DIP) with an industrial temperature grade. The MC68HC705C4A is based on Motorola's customer-specified integrated circuit (CSIC) design strategy, which allowed the same proven HC05 CPU core to be combined with varying memory and peripheral mixes for embedded control applications. An 8-bit microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and input/output peripherals on one die, sitting at the lowest tier of the embedded processor hierarchy (MCU -> embedded processor -> microprocessor -> system-on-chip). The M68HC05 family was one of the most widely deployed 8-bit controller families of the 1990s, and the 705 C-series variants added user-programmable EPROM for code development and low-volume production. Key characteristics of the MC68HC705C4ACP include the HC05 HMOS/CMOS-derived low-power CPU architecture, EPROM program memory suitable for development and field-update-tolerant designs, through-hole 40-pin DIP mounting for prototyping-friendly board designs, and industrial temperature grade operation for factory-floor environments. The C4A variant integrates a timer system and bidirectional I/O ports typical of the HC705C family. From a technical standpoint, the device uses the HC05 instruction set, which is a compact, accumulator-based 8-bit architecture with memory-mapped I/O, making peripheral access straightforward. The EPROM-based memory requires an external programming voltage during development, and the A-suffix devices in this family refined several electrical characteristics over the original C4. Clock generation is typically provided by an on-chip oscillator with an external crystal or ceramic resonator. Typical applications include industrial control panels, appliance controllers, automotive body electronics, security systems, and legacy test equipment — anywhere a simple, deterministic 8-bit controller in a through-hole package is required. Its DIP package makes it especially common in legacy repair, spare-part harvesting, and repair of 1990s-era equipment. Design consideration: since this device is long discontinued (NRND/EOL from Freescale/NXP), new designs should evaluate MC9S08-family successors, while existing systems should plan lifecycle management through excess-stock and aftermarket sourcing. This page synthesizes distributor availability data, family drop-in alternatives, and legacy-sustainment design notes not found in the original Motorola datasheet, providing a single reference point for engineers maintaining HC05-based systems.

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MC68HC705C8AB - 8KB OTP 8-Bit HC05 MCU 2.1MHz | NXP | 42-PDIP
MC68HC705C8AB

MC68HC705C8AB - 8KB OTP 8-Bit HC05 MCU 2.1MHz | NXP | 42-PDIP

The NXP (formerly Motorola/Freescale) MC68HC705C8AB is an 8-bit CMOS microcontroller built on the HC05 core, integrating 8 KB of one-time-programmable (OTP) program memory, 304 bytes of on-chip RAM, and 24 general-purpose I/O lines in a 42-pin PDIP package. It operates from a single 3.3 V or 5 V supply and executes instructions at up to 2.1 MHz from an internal oscillator, making it well-suited for cost-sensitive embedded control. Background: An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, non-volatile program memory, volatile data RAM, timers, and programmable I/O. The MC68HC705C8AB belongs to the M68HC05 family - a long-running CISC architecture that influenced the later HC08 and HCS08 lines. Within the embedded hierarchy, this part sits at: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. It targets legacy automotive body controllers, appliance controls, and industrial sensor front-ends where deterministic bit-manipulation and small code footprint matter more than raw MIPS. Key features include 8 KB OTPROM (8K x 8) for firmware storage, 304 bytes of RAM for variables and stack, 24 bidirectional I/O pins with programmable direction, a 16-bit timer with capture/compare, a fixed internal oscillator, and a serial communications interface (SCI). The 42-pin PDIP form factor supports through-hole assembly on legacy and prototype boards where socketed designs and easy programming are priorities. The HC05 CPU uses a fixed instruction set with bit-manipulation primitives, an accumulator-based architecture, and a memory-mapped I/O scheme. Its 2.1 MHz bus clock yields an instruction cycle of 0.95 microseconds (4-cycle bus), providing adequate throughput for slow control loops rather than DSP-class workloads. Typical applications include automotive body and chassis subsystems (window lift, seat control, instrument clusters), white-goods motor controllers (washing machines, dishwashers), HVAC damper and thermostat controls, and simple sensor-conditioning front-ends. The OTP memory allows low-NRE production runs while keeping per-unit cost low. When designing with this device, note that OTP cannot be re-programmed in-circuit - debugging requires a windowed EPROM sister (MC68HC705C8A with 'B' ceramic package) or a modern emulation adapter. Plan firmware revisions accordingly. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical HC05 design notes that go beyond what is printed in the manufacturer datasheet, helping engineers validate substitution choices for legacy 42-PDIP layouts.

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MC68HC705C8AFNE - 8-bit HC05 MCU 8KB OTP 44-PLCC | NXP
MC68HC705C8AFNE

MC68HC705C8AFNE - 8-bit HC05 MCU 8KB OTP 44-PLCC | NXP

The NXP MC68HC705C8AFNE is an 8-bit HC05-family microcontroller unit (MCU) with 8KB of one-time programmable (OTP) program memory, 304 bytes of on-chip RAM, and a 2.1 MHz bus clock, housed in a 44-pin PLCC (J-lead) package rated for the commercial temperature grade. Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/Flash/OTP), data memory (RAM), and programmable I/O peripherals on one die. The HC05 family from Motorola/Freescale/NXP is one of the longest-lived M68HC05 architectures, designed for low-cost, high-reliability embedded control in appliances, automotive body electronics, and industrial sensors. HC05 sits within the broader taxonomy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. Key features include a CISC HC05 core, 8KB OTPROM for code storage, 304-byte RAM, 16-bit timer with input capture/output compare, an 8-bit PWM timer, a synchronous serial peripheral interface (SPI) and a serial communications interface (SCI/UART), an 8-channel 8-bit ADC, and a programmable low-voltage reset. Operating voltage is 3.0V to 5.5V with commercial temperature grade (0C to +70C). The 44-pin PLCC package gives ample I/O for human-machine-interface and motor-control front-ends. The HC05 core uses a fixed instruction set with multiple addressing modes, an accumulator-based ALU, and a 16-bit program counter that can address up to 8KB. Program memory is implemented as UV-erasable EPROM on the C8A die, but the FNE suffix denotes the OTPROM windowless production variant intended for factory programming. The 304-byte SRAM is split between a 192-byte user RAM block and 112 bytes of stack/I/O register area. Typical applications include appliance control boards (washing machines, microwave ovens, HVAC dampers), automotive body controllers (window lift, mirror, seat modules where the part remains in production or service stock), security alarm panels, and low-cost industrial timer/counter boards. Its on-chip ADC and PWM also suit white-goods inverter control loops at modest switching rates. Design consideration: because OTPROM is one-time programmable, code must be fully validated in emulation (using the EPROM-based MC68HC705C8ACE or RAM-part EVB) before committing to the OTPROM FNE variant. Provision a self-boot mode and consider the 44-pin PLCC socket footprint for field-replaceability. This page consolidates distributor pricing, drop-in alternative 68HC05 family parts, and practical design notes that are not all present in the legacy MC68HC705C8A datasheet.

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MC68HC705L32FU - 8-Bit MCU, 8KB ROM, 256B RAM | Freescale
MC68HC705L32FU

MC68HC705L32FU - 8-Bit MCU, 8KB ROM, 256B RAM | Freescale

The Freescale Semiconductor MC68HC705L32FU is an 8-bit HC05-series embedded microcontroller with 8 Kbytes of user ROM, 256 bytes of static RAM, and five parallel ports identified as ports A, B, C, D, and E. The verified family documentation describes the MC68HC705L family as an 80-pin microcontroller unit, although the exact package designation and lead count of the FU ordering variant require confirmation. The device is intended for embedded control systems that combine a compact processor core with parallel digital I/O and legacy HC05-compatible peripherals. A microcontroller is a semiconductor device that integrates a CPU core, program memory, data memory, and peripherals into one component. In the product hierarchy, the MC68HC705L32FU is an embedded microcontroller, an 8-bit microcontroller, and an HC05-family MCU. Its value lies in consolidating deterministic control functions into a single package, reducing the number of discrete logic components needed for industrial equipment, appliance controllers, and legacy embedded platforms. The available verified data confirms an 8-bit HC05 CPU and identifies the broader family as having sophisticated on-chip peripheral functions. The documented memory map includes 8 Kbytes of user ROM and 256 bytes of static RAM. Five parallel I/O ports provide a practical interface to switches, indicators, relays, sensors, and other digital peripheral devices. The product search data does not provide verified operating voltage, clock frequency, package dimensions, pin-level function assignments, or absolute maximum ratings. The HC705L architecture is a legacy embedded-control platform rather than a high-performance processor. It is best suited to firmware that coordinates digital inputs and outputs, timing, and simple peripheral interactions. Because exact timing and electrical limits are not present in the supplied verified data, design engineers should not infer them from modern MCU families. The manufacturer family datasheet should be consulted for clock, reset, interrupt, port, power, and timing details before schematic capture or firmware deployment. Typical application domains include industrial control equipment, appliance and appliance-adjacent controllers, instrumentation interfaces, legacy machine controls, and embedded systems that already use HC05-family software or peripherals. The five documented parallel ports make the device particularly relevant when a system requires several digital lines rather than a high-speed serial interface. Exact MCU selection still depends on checking the package footprint, pin multiplexing, memory requirements, and electrical limits. A key design consideration is legacy-toolchain compatibility. Engineers should preserve the original HC05 memory map, port assignments, reset behavior, and interrupt conventions unless a complete hardware review confirms that a substitute is electrically and software compatible. The supplied search results identify availability and pricing resources, but do not establish that any alternative is pin-to-pin drop-in. This product page consolidates the verified family memory description, distributor availability references, package-related uncertainty, and procurement links. It also distinguishes documented MC68HC705L characteristics from parameters that still require verification in the exact MC68HC705L32FU datasheet and package drawing.

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MC68HC705L5FUE - 8-Bit HC05 MCU 8KB EPROM 80-QFP | NXP
MC68HC705L5FUE

MC68HC705L5FUE - 8-Bit HC05 MCU 8KB EPROM 80-QFP | NXP

The NXP Semiconductors MC68HC705L5FUE is an 8-bit HC05-family microcontroller (MCU) based on the M68HC05 CPU core, delivering 2.1 MHz CPU clock speed with 8KB (8K x 8) on-chip EPROM (UV-erasable) program memory, housed in an 80-pin QFP (14x14 mm) surface-mount package. Per the NXP/Freescale datasheet family, the device integrates 176 bytes of RAM, multiple 8-bit parallel ports, a programmable timer, and serial peripheral interfaces, targeting cost-sensitive embedded control applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/EPROM/Flash), working RAM, and a range of peripheral interfaces (timers, serial ports, GPIO, ADCs) into one package. Within the broader semiconductor hierarchy, an MCU sits below microprocessors (MPUs, which need external memory) and above generic logic ICs; the HC05 family specifically belongs to the 8-bit CISC category originally introduced by Motorola and now maintained by NXP. The 'HC705' prefix denotes an EPROM/OTP-programmable derivative of the masked-ROM HC05, intended for prototyping and low-volume production. Key features of the MC68HC705L5FUE include 8KB of user-programmable EPROM with on-chip charge pump for in-circuit programming, 176 bytes of on-chip RAM, a 16-bit programmable timer with input-capture/output-compare, an 8-bit A/D converter (per family datasheet), a Serial Communications Interface (SCI), and a Serial Peripheral Interface (SPI). The 80-pin QFP (QFP-80, 14x14 mm, gull-wing) package provides ample I/O for LCD drive, keypad scanning, and bus expansion. The architecture is a fully static CMOS design with low-power STOP and WAIT modes, supporting operation from a single 3.3 V or 5 V supply. The M68HC05 instruction set is well documented and supported by legacy assemblers and C compilers from Cosmic, IAR, and Metrowerks. Typical applications include industrial control panels, low-end consumer appliances, security/keypad systems, and legacy instrumentation where the HC05 ecosystem is already deployed. The EPROM windowed package (UV-erasable) is most useful for engineering development and low-volume programming iterations. As of 2026-10-09, the part is in mature/legacy status with NXP/Freescale; new designs should evaluate ColdFire or Kinetis replacements.

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MC68HC711E20CFU4 - 8-Bit 20KB EPROM 64-PQFP MCU
MC68HC711E20CFU4

MC68HC711E20CFU4 - 8-Bit 20KB EPROM 64-PQFP MCU

The Freescale Semiconductor MC68HC711E20CFU4 is an 8-bit M68HC11-family microcontroller with 20 KB of EPROM, operation from a single 5 V supply, and a 64-pin PQFP package. It is designed for embedded control systems requiring deterministic digital I/O, serial communications, timer resources, and EEPROM capability. The verified distributor listing identifies the HC11 CPU, 20 KB EPROM, 5 V supply, and 64-pin PQFP package; additional electrical limits and complete timing parameters are not supplied in the verified excerpts. A microcontroller such as the MC68HC711E20CFU4 sits above simple logic ICs in the semiconductor hierarchy: it integrates CPU, program memory, data memory, timers, serial interfaces, and parallel I/O into one device. An 8-bit microcontroller executes instructions over an 8-bit data bus, making it well suited to appliances, industrial controllers, instrumentation, and legacy embedded platforms where cost, deterministic control, and peripheral integration matter more than high computational throughput. The most useful verified features are the 8-bit HC11 CPU, 20 KB EPROM, 5 V operation, 64-pin PQFP package, and the listed SPI capability. The EPROM provides permanent program storage for firmware, while the large pin count supports multiple peripheral functions and dedicated I/O. The manufacturer-family description confirms that M68HC11E-series devices combine the CPU with high-performance on-chip peripherals, but exact pin functions, interrupt vectors, and peripheral limits must be taken from the complete datasheet. MC68HC711E20CFU4 belongs to the M68HC11 E-series architecture. Its legacy 8-bit design is appropriate for embedded controllers that were originally developed around the HC11 instruction set. The part is typically programmed and qualified against the original M68HC11E documentation rather than modern high-performance MCU platforms. The verified sources identify both Motorola-era documentation and later Freescale/NXP-related distribution records, reflecting the device's long legacy support history. Typical uses include industrial equipment, motor and process-control systems, automotive and transportation modules, communications interfaces, and embedded products where an 8-bit HC11 architecture is already established. In these applications, the controller can supervise sensors, operate actuators, manage timers, and communicate through serial peripherals while retaining a straightforward legacy software model. The most important design consideration is supply continuity: this is a legacy microcontroller and is offered by Rochester Electronics through the verified distributor listing. Engineers should confirm stock, package suffix, memory configuration, temperature grade, and programming requirements before committing a new design. A replacement must match the exact pinout, memory map, peripheral arrangement, clock behavior, and software assumptions rather than merely having a similar instruction set. This page consolidates the verified distributor pricing snippet, source traceability, legacy-MCU context, package information, and engineering selection cautions. The alternative section intentionally avoids unverified cross-device claims because the supplied cross-reference results did not identify enough exact, pin-compatible drop-in MPNs.

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MC68HC711MA8FU - 8-Bit HC11 MCU, 12KB EPROM, 5V | Freescale / NXP
MC68HC711MA8FU

MC68HC711MA8FU - 8-Bit HC11 MCU, 12KB EPROM, 5V | Freescale / NXP

The Freescale Semiconductor (NXP) MC68HC711MA8FU is an 8-bit M68HC11-family microcontroller featuring an HC11 CPU core, 12 KB of on-chip EPROM program memory, and 5V single-supply operation, all integrated into a 64-pin ceramic-windowed Quad Flat Package (QFP) for field-programmable prototyping and embedded-control applications. The MA8 variant in the MC68HC711 family combines the classic HC11 instruction set with EPROM programmability via an external programming voltage applied to the on-package quartz window, making it suitable for development, low-volume production, and end-of-line calibration tasks where code revisions are expected. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, timers, serial interfaces, and I/O peripherals onto a single silicon die. The 8-bit HC11 family occupies the historical role of a mid-range general-purpose embedded controller in the broader taxonomy of microcontrollers and microprocessors -> microcontrollers -> M68HC11 family -> HC11 CPU -> semiconductor; this is the same architectural lineage as the MC68HC11E and MC68HC711E9, sharing the HC11 instruction set for source-code compatibility. Key specifications for the MC68HC711MA8FU include 12 KB of EPROM, 256 bytes of on-chip RAM (family-typical, mark this as nominal for the family), a 5V supply with a typical HC11 operating range of 4.5 V to 5.5 V, 8-channel 8-bit ADC on most variants of the family, an enhanced 16-bit timer/counter system with capture and compare, and a non-multiplexed address/data bus available in expanded modes for external memory interfacing. The ceramic-windowed QFP package allows the EPROM to be erased under UV light and reprogrammed, a feature now restricted to legacy and educational designs but historically vital for embedded development. Typical applications for the MC68HC711MA8FU include industrial control systems, automotive subsystems (pre-CAN network nodes), instrumentation with on-chip ADC, motor-control front-ends using the timer's PWM outputs, and legacy equipment drop-in replacements where the HC11 instruction set is mandatory for code reuse. The combination of EPROM flexibility, on-chip peripherals, and a stable HC11 toolchain ecosystem still keeps the part in service for industrial and aerospace sustainment programs. When designing with the MC68HC711MA8FU, pay attention to AVDD/VSS separation and decoupling: place a 100 nF ceramic capacitor within 5 mm of each supply pin and a single 10 uF bulk capacitor near the package. The HC11 expanded-mode bus signals (AS, E, R/W, D0-D7, A0-A15) require careful PCB impedance control when interfacing external memory. The part is classified as obsolete or last-time-buy at most authorized distributors; remaining stock is held by Rochester Electronics, a licensed aftermarket supplier that supports end-of-life components. New designs should select a current-generation Freescale / NXP S08 or S12 MCU unless code compatibility or legacy support mandates the HC11.

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MC68HC908AP16CFB - 8-Bit HC08 MCU 16KB Flash 44-QFP | NXP
MC68HC908AP16CFB

MC68HC908AP16CFB - 8-Bit HC08 MCU 16KB Flash 44-QFP | NXP

The NXP (formerly Motorola/Freescale) MC68HC908AP16CFB is an 8-bit HC08-family microcontroller IC featuring a 16KB FLASH program memory, an 8MHz CPU core, and a 44-pin QFP (10x10mm) package. According to the MC68HC908AP16CFB datasheet (Advance Information - Rev 4.0), this device integrates an enhanced M68HC08 central processor unit (CPU08) with on-chip FLASH, RAM, and a rich set of peripherals optimized for low-power embedded designs. An 8-bit microcontroller (MCU) is a small computer-on-a-chip combining a CPU, program memory, data memory, and I/O peripherals on a single die. The MC68HC908AP16CFB belongs to the M68HC08 family of 8-bit MCUs, which evolved from the earlier M68HC05 family and added a fully static CPU with enhanced addressing modes. Within the broader taxonomy, MC68HC908AP16CFB sits at: microcontroller (MCU) -> 8-bit MCU -> HC08 family -> M68HC08 -> AP16 sub-family. It is also closely related to the MCHC908 line because MC68HC908 and MCHC908 are equivalent prefixes used across the same silicon (per NXP community confirmation). Key features of the MC68HC908AP16CFB include 16KB of in-application programmable FLASH, an internal bus architecture supporting byte-efficient instruction execution, multiple 16-bit timer interfaces, an analog-to-digital subsystem, and serial communication modules. The 44-QFP (10x10) plastic quad flat pack is a JEDEC-standard surface-mount package with gull-wing leads on all four sides, suitable for production SMT lines and hand-rework on development boards. The HC08 CPU08 core uses a Von Neumann architecture with a 16-bit stack pointer and index register, enabling compact C and assembly code. The device includes on-chip in-circuit debug (ICD) support and a FLASH security feature to protect IP. Operating voltage is typically 5V (3V to 5.5V supply range is common across the family, exact range should be confirmed in the datasheet). Typical applications include remote keyless entry (RKE) transmitter designs, automotive body electronics, industrial control panels, low-power sensor signal conditioning, and small appliance controllers. The HC08 instruction set and wide peripheral set make this device well-suited for cost-sensitive, deterministic control tasks that do not require the performance of a 32-bit MCU. When designing with this MCU, ensure the oscillator and reset circuits follow the application note recommendations in the MC68HC908AP16 datasheet family. Use the on-chip FLASH security bit to lock code against unauthorized read-back, and follow Freescale/NXP programming specifications for in-application FLASH updates if required. This page synthesizes datasheet specifications, lifecycle status, available alternatives from the DigiKey cross-reference tool, and design considerations not found in any single source on the open market.

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MC68HC908AP32CB - 8-Bit HC08 MCU, 32KB Flash, 42-PDIP | NXP
MC68HC908AP32CB

MC68HC908AP32CB - 8-Bit HC08 MCU, 32KB Flash, 42-PDIP | NXP

The NXP MC68HC908AP32CB is an 8-bit HC08 family microcontroller integrating 32KB of on-chip Flash program memory and 2KB of RAM into a 42-pin PDIP through-hole package. It is part of the legacy Freescale/Motorola AP32 sub-family designed for cost-sensitive 8-bit embedded control with an HC08 core running up to 8 MHz and connectivity peripherals including I2C, IRSCI, SCI, and SPI. An 8-bit microcontroller (MCU) is a single-chip processor with an 8-bit data bus, on-chip program and data memory, and integrated peripherals such as timers, communication controllers, and general-purpose I/O. The MC68HC908AP32CB belongs to the hierarchy: microcontroller -> 8-bit MCU -> HC08 family -> Freescale/NXP AP32 sub-family -> 42-pin PDIP variants. This taxonomy places the part in the broader class of embedded processors used in industrial control, automotive body electronics, and consumer appliances. Key features include 32 programmable I/O lines, low-voltage detection (LVD), power-on reset (POR), a pulse-width modulation (PWM) module, and an LED driver capability. The HC08 core uses a von Neumann architecture with 16-bit index register and stack pointer, enabling C and assembly-language development using the COSMIC or Metrowerks CodeWarrior toolchains. The device operates across an industrial temperature range typical of the AP32 family. Typical applications include industrial sensor interfaces, low-end motor control loops, automotive body controllers (non-safety), white goods / appliance control boards, and consumer remote/keypad modules. The 42-pin PDIP package simplifies prototyping and rework on through-hole production boards. When designing with this part, note that it is in the obsolete lifecycle per distributor records, so designers should verify long-term availability or plan migration to a current-generation NXP S08 or Kinetis E-series MCU that offers pin-compatible or footprint-similar replacements with active production status. This page synthesizes distributor pricing (DigiKey, Octopart), drop-in / same-footprint alternatives, and practical design notes that complement the manufacturer datasheet and accelerate obsolescence-risk mitigation planning.

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MC68HC908BD48I - 8-Bit 6MHz MCU with 48KB Flash
MC68HC908BD48I

MC68HC908BD48I - 8-Bit 6MHz MCU with 48KB Flash

The Freescale Semiconductor MC68HC908BD48I is an 8-bit HCMOS microcontroller operating at up to 6 MHz, with 48 KB of embedded Flash memory and a 42-pin PDIP package. It belongs to the HC08 microcontroller family and combines a compact CPU, on-chip flash, analog conversion, timing, serial, and USB-related resources for embedded-control designs. An 8-bit microcontroller is a programmable controller designed for modest data widths, real-time control, and peripheral integration. In the product hierarchy, the MC68HC908BD48I is a microcontroller, an embedded-processing IC, and a semiconductor rather than a general-purpose computer. Its integrated flash reduces external program-memory requirements, while the integrated analog and timing peripherals can reduce the component count in control, sensing, and communication systems. Key features identified in the verified distributor listing include an 8-bit architecture, 6 MHz operation, and 48 KB of Flash memory. The manufacturer datasheet search result additionally identifies a 6-channel, 8-bit analog-to-digital converter, a 16-channel, 8-bit pulse-width modulator, and USB 1.0 low-speed bus support with three endpoints. These functions make the device suitable for applications requiring embedded control alongside basic sensing, timing, and low-speed connectivity. The MC68HC908BD48I is based on the HC08 platform, whose HCMOS implementation supports a compact embedded-control architecture. Its 8-bit processing core is intended for control logic, state machines, keypad or switch handling, and peripheral coordination rather than computationally intensive workloads. The 48 KB Flash capacity provides a meaningful program-memory budget for embedded firmware while eliminating the need for an external program-memory device in many designs. Typical applications include industrial control equipment, instrumentation, consumer products, USB-connected peripherals, and low-cost embedded systems. The analog-to-digital and PWM resources can support sensing, actuator control, motor or lamp modulation, and periodic signal generation. USB support can simplify connection to a host system when the firmware implements the required low-speed USB behavior and the board provides suitable signal routing. When designing a new board, use the manufacturer datasheet and package pinout as the authority for pin assignment, power, clocking, programming, and peripheral multiplexing. The 42-pin PDIP package is through-hole and is not electrically interchangeable with a surface-mount package without a deliberate PCB redesign. Firmware toolchain, programming method, timing requirements, and USB implementation should be validated before production use. This page consolidates the verified distributor identification, manufacturer datasheet link, package information, key embedded resources, and practical selection considerations. It does not invent electrical values, pricing, pin functions, or replacement parts that were not present in the supplied verified data.

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MC68HC908BD48IB - 8-bit HC08 MCU 48KB Flash USB | NXP
MC68HC908BD48IB

MC68HC908BD48IB - 8-bit HC08 MCU 48KB Flash USB | NXP

The NXP MC68HC908BD48IB is an 8-bit HC08-family microcontroller featuring 48KB of Flash program memory, 1KB of RAM, an integrated low-speed USB 1.0 interface with three endpoints, a 6-channel 8-bit ADC, and a 16-channel 8-bit PWM, housed in a 42-pin SDIP (Shrink DIP) package. It executes instructions from the HC08 core at an internal bus speed of 6 MHz and is targeted at consumer and industrial human-interface devices that need embedded USB connectivity. An HC08 microcontroller is a member of the 8-bit microcontrollers category, which falls under the broader hierarchy of microcontrollers -> microprocessors -> processors -> semiconductor devices -> integrated circuits. The HC08 architecture uses a von-Neumann memory map with a HCMOS process technology and is the predecessor of the enhanced HCS08 family, sharing the same instruction set for software portability. Within NXP's (formerly Motorola/Freescale) 8-bit roadmap, the MC68HC908BD48 belongs to the BD-series, which is specifically optimized for USB-enabled peripherals such as keyboards, mice, game pads, and pointer devices. Key differentiating features of the MC68HC908BD48IB include on-chip USB 1.0 low-speed transceiver compliant with the Universal Serial Bus specification, a 6-channel 8-bit ADC for analog sensing, a 16-channel 8-bit PWM for motor control or LED dimming, and an internal oscillator that reduces external component count. The device integrates 32 general-purpose I/O pins and includes a 42-pin SDIP through-hole package for robust prototyping and field-replaceable modules. The architecture combines an 8-bit HC08 CPU, security features to lock Flash memory against unauthorized reads, and a low-power STOP/WAIT mode for battery-aware USB peripherals. The integrated USB PHY eliminates the external transceiver typically required for low-speed USB on other 8-bit MCUs, reducing BOM cost and PCB area while maintaining full USB 1.0 compliance. Typical applications include USB keyboards, USB mice and pointing devices, USB game pads and joysticks, USB barcode scanners, and low-speed USB industrial input devices. The integrated ADC and PWM allow the same MCU to drive both analog sensors and actuators alongside the USB interface. When designing with the MC68HC908BD48IB, ensure proper USB bus-power decoupling (per USB 1.0 specification) and respect the 5V VCC tolerance of the USB D+/D- pins. The internal oscillator eliminates an external crystal for USB-synchronized applications, simplifying the BOM and reducing the PCB footprint compared to crystal-driven alternatives. This page synthesizes distributor pricing, drop-in same-package alternatives, and design considerations not found in the manufacturer datasheet to help engineers evaluate this legacy USB 8-bit MCU for both new designs and field replacements.

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MC68HC908GP32CB - 8-Bit 8MHz MCU 32KB Flash 42-PDIP | NXP
MC68HC908GP32CB

MC68HC908GP32CB - 8-Bit 8MHz MCU 32KB Flash 42-PDIP | NXP

The NXP (formerly Motorola/Freescale) MC68HC908GP32CB is a member of the M68HC08 family of 8-bit microcontroller units featuring a CPU08 core running at 8 MHz bus frequency, 32 KB of on-chip FLASH program memory, 512 bytes of RAM and a 42-pin PDIP package. The device integrates a 33 I/O line count with extensive on-chip peripherals including multiple timers, an SPI, an SCI, and a 10-channel 8-bit ADC. Background knowledge: An 8-bit microcontroller is a single-chip computer that integrates a CPU, RAM, non-volatile program memory (Flash/ROM/EPROM) and configurable peripheral I/O onto a single IC. Within the taxonomy, MCUs fall under microcontrollers -> integrated circuits -> semiconductors. The M68HC08 family from Motorola/Freescale (now NXP) was a popular successor to the earlier M68HC05 family, adding a stack pointer-based CPU08 core with X/Y index registers, a wider 16-bit address space and improved instruction set while preserving HC05 software compatibility. The 'GP' sub-family is general-purpose with a balanced mix of timers, serial ports and A/D. Key features include 32 KB FLASH (32K x 8) with in-system programming support, 512 bytes of on-chip RAM, a 10-channel 8-bit ADC, two 16-bit timers with capture/compare/PWM, an SPI, an SCI for asynchronous serial, and a programmable COP watchdog. A built-in 12 V high-voltage programming interface allows FLASH updates without an external bootloader ROM. Architecturally the CPU08 runs from a 3.0-5.5 V supply with internal clock generation from an on-chip oscillator driving a PLL-less 8 MHz bus. The 42-pin PDIP variant (CB suffix) provides a DIP-package form factor for through-hole prototyping, breadboards and legacy industrial retrofits. Memory addressing is 16-bit with banking at the upper 4 KB. Typical applications include automotive body controllers, appliance control boards, simple sensor interfaces, industrial sensor hubs and educational/legacy embedded systems. The general-purpose peripheral mix makes the GP32 suitable wherever moderate I/O and modest computation are required without stepping up to 32-bit cost. Design consideration: Plan for a 5V supply tolerance window (3.0-5.5 V), bulk decoupling near VDD/VSS pairs, and ensure oscillator startup time is accounted for during the reset sequence. When migrating from the older HC05, verify that the indexed addressing mode, stack page register and interrupt vectors are remapped to match the HC08 memory map. This page synthesizes distributor pricing, drop-in alternative MPNs, package-pin details and practical design notes not found in the bare manufacturer datasheet.

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MC68HC908GR16MFA - 8MHz 8-bit HC08 MCU 16KB Flash 48-LQFP | NXP
MC68HC908GR16MFA

MC68HC908GR16MFA - 8MHz 8-bit HC08 MCU 16KB Flash 48-LQFP | NXP

The NXP (formerly Freescale/Motorola) MC68HC908GR16MFA is a member of the HC08 family of 8-bit microcontrollers featuring a 16 KB FLASH program memory, 1 KB of RAM, and an 8 MHz maximum internal bus frequency, housed in a 48-pin LQFP (7x7 mm) package with a FLASH-based HC08/S08 CPU core. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/FLASH), working memory (RAM), and a set of peripherals such as timers, ADC, communication interfaces, and GPIO onto one semiconductor die. Within the broader hierarchy, the MC68HC908GR16MFA sits at: microcontroller -> 8-bit microcontroller -> HC08 family -> FLASH-based HC08 microcontrollers. It targets cost-sensitive, mid-complexity embedded designs where deterministic 8-bit performance is sufficient. Key features include two 16-bit timer interface modules (TIM1 and TIM2), each with 2 channels supporting input capture, output compare, and pulse-width modulation (PWM). The device integrates an 8-channel, 10-bit successive-approximation analog-to-digital converter (ADC), enabling direct sensor interfacing without external components. Additional peripherals include a serial communications interface (SCI), serial peripheral interface (SPI), keyboard interrupt module, and a BREAK (BRK) module that supports single-breakpoint in-circuit debugging. The HC08 core uses a von Neumann architecture with FLASH-based program storage and an integrated clock generator with user-programmable trim, eliminating the need for an external crystal in many applications. The 48-LQFP package exposes up to 39 general-purpose I/O pins and supports an internal bus speed up to 8 MHz with low-voltage operation down to 2.7 V, making it compatible with both 3.3 V and 5 V system rails. Typical applications include white-goods and home-appliance motor control (washing machines, dishwashers), automotive body controllers, simple sensor conditioning nodes, HVAC damper and fan control, low-end consumer electronics, industrial timers and sequencers, and educational/development platforms for 8-bit embedded training. When designing with this part, note that the HC08 instruction set is source-compatible with the older HC05 family, easing migration. Watch the maximum ADC clock and reference-voltage requirements, and ensure the internal oscillator trim is calibrated for UART baud-rate accuracy in SCI applications. This page synthesizes distributor stock data, drop-in compatible alternatives, and practical design notes that go beyond the manufacturer datasheet to help engineers select, source, and deploy the MC68HC908GR16MFA in production designs.

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MC68HC908GR4CFAE - 8-bit HC08 MCU, 4KB Flash, 32-LQFP | NXP
MC68HC908GR4CFAE

MC68HC908GR4CFAE - 8-bit HC08 MCU, 4KB Flash, 32-LQFP | NXP

The NXP MC68HC908GR4CFAE is an 8-bit HC08 microcontroller with 4KB of Flash program memory, an 8 MHz internal bus frequency, and an SCI plus SPI serial communication block, housed in a 32-pin LQFP package (7x7 mm). It targets general-purpose consumer and industrial embedded control applications and is part of NXP's M68HC08 family of low-cost, high-performance 8-bit microcontrollers (MCUs). An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/Flash), data memory (RAM), and various peripherals such as timers, ADCs, and communication interfaces onto one die. Within the embedded hierarchy, the M68HC08 family sits between legacy M6805/M68HC05 designs and the modern S08/Coldfire lines, providing upward-compatible object code and C-friendly architecture. Key features of the MC68HC908GR4CFAE include 4KB of Flash, 384 bytes of RAM, 21 general-purpose I/O pins, plus on-chip peripherals such as PWM, an LVD/POR supervisory block, an 8-bit timer, and the previously noted SCI and SPI ports. A high-performance M68HC08 CPU core optimized for C compilers delivers an 8 MHz internal bus and supports system protection features such as low-voltage detection and power-on reset. The part uses a 3.3V/5V dual-voltage operating range and ships in a 32-pin LQFP (7x7 mm) with 21 GPIOs suitable for through-hole-free surface-mount assembly. NXP positions this device for general-purpose applications; this specific variant is flagged as End of Life/Not For New Designs on current NXP product pages, with parts continuing to ship via authorized distributors like Rochester Electronics. Typical applications include appliance control, white-goods user interfaces, simple sensor conditioning, low-cost motor drivers, and industrial control front-ends. Combined SCI and SPI peripherals make this MCU a fit for networked appliance nodes and remote sensor hubs that require point-to-point or short-distance multi-drop connectivity. When designing with this part, verify NXP's current lifecycle status before committing to new designs, plan for PCN (Product Change Notice) review, and ensure a long-term supply path through authorized distributors. Designers should also confirm Flash programming/erasure endurance and in-application programming support for field-update requirements. This page combines distributor pricing from DigiKey, Mouser, and Newark with NXP datasheet specifications and a curated set of same-family and alternative candidates, giving engineers a single-pass view of availability, lead-time risk, and pin-compatible replacements not found in any single vendor listing.

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MC68HC908GR8CDW - 8-Bit HC08 MCU 7.5KB Flash 8MHz 28-SOIC | NXP
MC68HC908GR8CDW

MC68HC908GR8CDW - 8-Bit HC08 MCU 7.5KB Flash 8MHz 28-SOIC | NXP

The NXP (formerly Motorola/Freescale) MC68HC908GR8CDW is an 8-bit HC08 CISC microcontroller with 7.5KB of Flash program memory running at 8MHz internal bus speed, housed in a 28-pin SOIC wide-body package. It operates from a 3.3V to 5V supply and targets low-cost embedded control applications. The device is part of the M68HC08 family of 8-bit microcontrollers optimized for low-power operation and is well-suited for applications such as remote keyless entry (RKE) transmitters, small consumer appliances, and industrial control. A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory (Flash/ROM), peripherals (timers, ADC, communication ports), and sometimes EEPROM into one IC. Hierarchy: MCU -> microcontroller unit -> embedded controller -> semiconductor IC. The 8-bit class represents the largest installed base of MCUs worldwide, prized for deterministic interrupt response, low cost, and ultra-low sleep current. Key features of the MC68HC908GR8CDW include 7.5KB of on-chip Flash memory (7.5K x 8), 384 bytes of RAM, an internal 8MHz oscillator with trim, brownout/low-voltage detection (LVD), power-on reset (POR), multiple 16-bit timers, a 10-bit ADC on selected variants, and a serial communications interface (SCI/SPI). The 28-SOIC wide-body package (0.295 inch / 7.50mm width) provides a robust through-hole-equivalent footprint compatible with hand-prototyping and standard SMT assembly lines. Architecturally, the part uses the enhanced M68HC08 CPU08 core, a true CISC design with flexible addressing modes, a 16-bit stack pointer, and the HC08 BCD math subset. The instruction set is binary-compatible with the earlier M68HC05 family, easing migration for older designs. On-chip in-circuit programmable Flash allows field firmware updates via a background debug mode (BDM). Typical applications include remote keyless entry (RKE) transmitters, security panels, small appliance controllers, simple sensor signal conditioning, low-end motor control, and battery-powered measuring instruments. The 3.3V/5V dual-voltage capability and low-power wait/stop modes also make the part a candidate for portable handheld devices. Designers should configure the LVD threshold and oscillator trim bits during production to ensure reliable reset behavior across temperature. Flash programming must follow the Erase-Program-Verify sequence specified in the Freescale/NXP datasheet to avoid disturb on neighboring bytes. This page synthesizes distributor pricing, drop-in NXP same-family alternatives, and practical design notes not found in the manufacturer datasheet.

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MC68HC908GR8CFA - 8-Bit HC08 MCU, 7.5KB Flash, 32-LQFP | NXP
MC68HC908GR8CFA

MC68HC908GR8CFA - 8-Bit HC08 MCU, 7.5KB Flash, 32-LQFP | NXP

The NXP MC68HC908GR8CFA is a member of the low-cost, high-performance M68HC08 family of 8-bit microcontroller units (MCUs). It integrates 7.5 KB of on-chip Flash program memory (7.5K x 8), 384 bytes of RAM, and a CPU08 core running at up to 8 MHz internal bus speed, all housed in a 32-pin LQFP (7x7 mm) package. The device offers 21 general-purpose I/O lines and is optimized for low-power operation. What is an 8-bit microcontroller? An 8-bit microcontroller is a small computer-on-a-chip built around a CPU with an 8-bit data path, on-chip program memory (Flash/ROM), data memory (RAM), and integrated peripherals such as timers, ADCs, and communication interfaces. The M68HC08 family sits within the broader taxonomy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The HC08 architecture specifically evolved from the earlier HC05 by adding a 16-bit index register, page-free linear addressing, and a more powerful instruction set, making it well suited to cost-sensitive, low-power embedded designs. Key features of the MC68HC908GR8CFA include on-chip peripherals for serial communication (one SCI, one SPI), a PWM module, low-voltage detect (LVD) and power-on reset (POR), an internal oscillator (no external crystal required for basic operation), and a Flash program memory that supports in-system programming. The 32-LQFP package is a low-profile quad flat pack suited to compact surface-mount designs. From a technical depth standpoint, the device uses an enhanced M68HC08 central processor unit (CPU08) with 16-bit stack pointer and index register, page-free linear memory addressing up to 64 KB, and a Flash memory controller supporting block-erase and security modes. It is specified for the standard 5V (or 3V extended) automotive/industrial operating envelope typical of the GR family. Typical applications include remote keyless entry (RKE) transmitters, simple motor control, white-goods and appliance control, low-cost sensor interfaces, and automotive body electronics where small footprint and low power matter. When designing with this part, note that it is part of an NRND/Obsolete M68HC08 line; plan for second-source alternatives or modern Kinetis/EZ80 migration paths. Always check the latest NXP PCN notices before committing to new designs.

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