MC9S12B128VPV
MC9S12B128VPV - 16-Bit 128KB Flash MCU | NXP
The NXP Semiconductors MC9S12B128VPV is a 16-bit HCS12 CISC microcontroller with 128 KB of Flash memory, 2.5 V or 5 V operation, and a 112-pin LQFP package. It belongs to the MC9S12B automotive-multiplexing family, whose members are described as fully pin compatible for scalable memory and peripheral options. The device combines embedded Flash program memory with automotive-oriented communication and control capabilities in one integrated circuit.
A microcontroller is a programmable semiconductor that executes firmware, reads inputs, controls outputs, and manages embedded-system communication. Within the product hierarchy, the MC9S12B128VPV is a 16-bit MCU, a CISC processor, an embedded Flash controller, and a semiconductor used in electronic control units. Automotive multiplexing designs commonly use multiple microcontrollers connected through communication networks to coordinate distributed vehicle functions while centralizing coordination among body, comfort, and related systems.
The verified product information identifies the core as HCS12, the instruction width as 16-bit, the Flash memory as 128 KB, and the supply options as 2.5 V and 5 V. Its 112-pin LQFP package provides a comparatively high pin count suitable for systems requiring numerous I/O resources and dedicated peripheral connections. The verified material does not provide detailed clock, RAM, CAN, timer, ADC, operating-temperature, or automotive-qualification values, so those parameters should be confirmed in the family documentation before schematic capture.
MC9S12B-family devices were designed for automotive multiplexing applications, and the family description specifically emphasizes pin compatibility across different memory and peripheral options. That architectural approach supports product scaling: engineers may select a family member according to Flash capacity or peripheral set while retaining package-level design continuity. It does not, by itself, prove that every family member is a drop-in replacement for MC9S12B128VPV.
Typical uses include body-control modules, vehicle multiplexing controllers, distributed automotive control units, sensor aggregation nodes, and actuator coordination controllers. In these systems, the MCU reads switches and sensors, executes control logic, manages communication links, and drives outputs. The 128 KB Flash capacity provides room for embedded software, while the 112-pin LQFP package exposes a broad external connection surface.
Design work should begin by downloading the MC9S12B family datasheet and confirming the exact VPV pin assignment, peripheral multiplexing, clock requirements, reset connections, programming interface, and decoupling. Because the search data confirms the family and package but does not expose a complete verified pin table, engineers should treat the published family documentation as the controlling source before layout or replacement decisions.
This product page consolidates verified source facts, package identity, application context, engineering caveats, and sourcing links. It adds design-oriented interpretation without presenting unverified clock, memory-map, qualification, or lifecycle claims as established specifications.
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