MC912B32CFU8R2 - 16-Bit 8MHz 32KB Flash MCU | NXP
Référence : MC912B32CFU8R2 ✗ Fin de vieMC912B32CFU8R2 Présentation
A microcontroller is a semiconductor device that integrates a processor core, memory, and peripherals into one embedded-control component. In the hierarchy used for this product, CPU12 microcontroller belongs to embedded processor, embedded controller, and semiconductor categories. The CPU12 architecture executes instructions from embedded flash while interacting with timers, communication interfaces, analog and digital I/O, interrupts, and external bus circuitry through an 80-pin package.
The verified listing specifies 16-bit processing, an 8 MHz operating frequency, 32 KB flash organized as 32K by 8, and an 80-pin QFP package. These headline values place the device in the M68HC12B family and make the exact suffix and package configuration important when replacing or upgrading an existing design. The R2 ordering suffix must be verified against purchasing records and the manufacturer datasheet before production release.
Technically, the combination of a 16-bit CPU12 core, 8 MHz clock, and embedded flash supports compact control firmware without an external program-memory device. The 80-terminal format provides more interface pins than smaller microcontrollers, but it also requires careful escape routing and a substantially larger footprint than 32- or 64-pin packages. Clock, memory, and timer values beyond those explicitly supplied require confirmation from the official device documentation.
Typical uses include industrial motor and motion control, appliance controllers, building automation, instrumentation, and general embedded automation. An 80-pin package can be advantageous when a legacy or industrial design needs numerous discrete I/O functions, while the 8 MHz CPU12 rate favors straightforward embedded control rather than performance-intensive compute workloads.
The primary design consideration is replacement discipline. Package code, terminal count, temperature grade, flash density, clock target, peripheral resources, and software-device mapping must all match before a substitute is treated as drop-in compatible. This page distinguishes verified facts from missing parameters and does not infer unverified electrical or timing limits.
This page consolidates the supplied manufacturer-linked part information, distributor records, source URLs, sourcing constraints, and engineering-selection guidance beyond a simple distributor listing. Unknown specifications remain explicitly marked rather than being guessed.
Alternatives de remplacement direct pour MC912B32CFU8R2 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesMC912B32CFU8R2 Valeurs maximales et caractéristiques électriques
| Product Type | 16-bit CPU12 microcontroller |
| Manufacturer | NXP Semiconductors |
| Family | M68HC12B |
| Processor Architecture | CPU12, 16-bit |
| Maximum Stated CPU Frequency | 8 MHz |
| Embedded Flash Memory | 32 KB (32K x 8) |
| Package Code | QFP |
| Package Form | Gull wing, square |
| Package Dimensions | 14 mm x 14 mm |
| Terminal Count | 80 terminals |
| Type de montage | Surface mount |
| Temperature Grade | Industrial |
| RoHS Compliance | Compliant information present in the manufacturer-linked material; exact declaration status not independently extracted |
Guide de configuration des broches du MC912B32CFU8R2 14 mm x 14 mm
Configuration des broches du MC912B32CFU8R2 (boîtier 14 mm x 14 mm). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour MC912B32CFU8R2.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MC912B32CFU8R2 convient pour 6 applications: Industrial Machine Controllers, Motor and Motion Control, Appliance and Equipment Control, Building Automation Equipment, Instrumentation and Data Acquisition, Legacy CPU12 Embedded Platforms.
Industrial Machine Controllers
The MC912B32CFU8R2 fits legacy industrial-control boards that already depend on the CPU12 instruction set and require 32 KB of embedded program memory. Its verified 16-bit CPU12 core runs at 8 MHz, while the 80-terminal QFP provides a broad connection count for digital control signals and external interfaces. This is especially useful when preserving an existing machine platform is more valuable than redesigning around a smaller package. Before production use, verify supply voltage, timer resources, I/O levels, pin multiplexing, and the industrial temperature limits from the manufacturer documentation.
Recommandé
Motor and Motion Control
The 16-bit CPU12 architecture and 8 MHz operating frequency make MC912B32CFU8R2 relevant to compact motor-control logic where deterministic firmware execution, embedded flash, and numerous package terminals are useful. An 80-pin QFP can expose timer, communication, control, and feedback connections without requiring a very small package. The design must still verify the exact timer channels, pulse-width modulation resources, encoder interfaces, and peripheral pin assignments. Firmware migration also matters because another 16-bit MCU may use a different instruction set despite a comparable clock rating.
Recommandé
Appliance and Equipment Control
MC912B32CFU8R2 can support appliance, pump, relay, or equipment-control systems that benefit from integrated 32 KB flash and a high terminal count. The 8 MHz CPU12 core provides an established platform for sequencing motors, sensing switches, operating displays, and handling local communications. Maintaining the existing package can simplify repair and production-line changes when the controller was designed around CPU12 software. Verify reset behavior, watchdog support, I/O levels, analog channels, and timing before assigning new safety-related or high-energy functions to the device.
Recommandé
Building Automation Equipment
The verified 80-terminal QFP and industrial-grade classification make MC912B32CFU8R2 a candidate for building-automation controllers that need many discrete inputs and outputs in a mature platform. It can coordinate sensors, relays, communication interfaces, and local control logic while executing firmware from 32 KB of embedded flash. The large package also exposes more connectivity than a compact controller but demands an 80-pin PCB footprint and careful escape routing. Confirm serial interfaces, timers, input thresholds, environmental ratings, and watchdog behavior in the official documentation before specifying it for a new building panel.
Recommandé
Instrumentation and Data Acquisition
MC912B32CFU8R2 may be used in instrumentation front ends that need local sequencing, communication, and control alongside external analog circuitry. Its 16-bit CPU12 core operates at 8 MHz and includes 32 KB of embedded flash, while the 80-pin package can support digital control and communications. However, the supplied data does not identify the analog converters or precision I/O, so this role requires external signal conditioning and suitable converters. Engineers should verify bus timing, interrupt latency, memory requirements, and calibration architecture before using the MCU as a measurement controller.
Recommandé
Legacy CPU12 Embedded Platforms
The strongest use case for MC912B32CFU8R2 is maintaining an established CPU12 embedded platform that requires the exact 8 MHz configuration and 32 KB flash density. Because the package contains 80 terminals, it can support systems whose existing board already accommodates a square gull-wing QFP footprint. Software investment can be retained when processor mapping and memory organization match. This is a compatibility-led selection rather than a performance-led one. Preserve the original schematic, verify every net, validate reset and clock circuitry, and confirm the precise device revision before using a substitute ordering code.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC912B32CFU8R2 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit |
|---|---|
| Package | 80-terminal QFP, 14 mm x 14 mm |
| Brand | NXP Semiconductors |
| Processor Architecture | 16-bit CPU12 |
| Operating Frequency | 8 MHz |
| Embedded Flash | 32 KB (32K x 8) |
| Temperature Grade | Industrial |
| Terminal Count | 80 terminals |
| Mounting Form | Square gull-wing surface-mount QFP |
| Drop-In Status | Target device |
Principaux différenciateurs
- Exact 32 KB embedded-flash configuration (vs MC68331VFC16)
- Verified CPU12 software platform (vs MC68331VFC16)
- Verified 80-terminal package continuity (vs MC68331VFC16)
Notes de conception
Do not treat a similar 16-bit microcontroller as a drop-in replacement. The verified target is an 8 MHz, 32 KB-flash CPU12 device in an 80-terminal QFP. Before substitution, compare every pin name and alternate function, supply limits, I/O thresholds, clock configuration, reset behavior, timer assignments, communication channels, memory map, development-tool support, and software-device identifiers. The provided data does not contain enough detail to approve any alternate MPN.
Design or inspect the PCB for the verified square 14 mm by 14 mm, 80-terminal gull-wing footprint, including pin pitch and exposed pad requirements. Place decoupling and support components close to their associated supply pins, preserve adequate assembly clearance, and route sensitive clock and reset signals away from high-edge-rate digital nets. Because the supplied information omits the complete pinout and recommended land pattern, use the official package drawing rather than reconstructing dimensions from a generic QFP template.
Verify the processor and I/O supply ranges, absolute maximum ratings, internal regulator architecture, power sequencing, and input-voltage tolerances from the manufacturer datasheet before connecting external circuitry. Estimated: power dissipation equals supply voltage multiplied by total device current, but the required voltage and current values were not supplied, so no numerical thermal estimate is presented. Production validation should include startup, brownout, reset, and maximum-clock operating tests across the intended power-supply tolerance.
Treat clock, reset, programming/debug connections, and any communication interfaces as layout-sensitive nets even though the verified web snippets do not specify their pin locations. Follow the complete datasheet pinout and reference layout for decoupling, external clock components, debug access, and unused terminals. Prototype first because an 80-pin package is easy to misidentify by family or package code. Compare the physical component markings and purchased suffix with the approved BOM before energizing the board.
Informations de conformité
The supplied NXP-hosted material includes substance-reporting references to cadmium, plastics and polymers, lead, and metals, but the snippet does not contain a complete compliance declaration. AEC-Q100 is not applicable to the available industrial MCU description, but no additional automotive qualification was supplied.
