NXP Semiconductors MC9S12B128VPVE

Overview

MC9S12B128VPVE from Freescale Semiconductor is a 16-bit automotive-grade Flash microcontroller featuring CPU12 core, 128KB on-chip Flash EEPROM, 4KB RAM, 1KB EEPROM, 16-channel 10-bit ADC, 8-channel PWM, dual SCI, SPI, I²C, and one CAN 2.0A/B software-compatible module - deployed in body control modules and powertrain gateways requiring deterministic real-time response.

For engineers reviewing the MC9S12B128VPVE datasheet, MC9S12B128VPVE pinout, MC9S12B128VPVE application, or MC9S12B128VPVE equivalent, this page delivers verified functional architecture, validated peripheral timing behavior, confirmed memory mapping, and precise package-level I/O capability for automotive ECU design validation and BOM selection.

Technical Context

The MC9S12B128VPVE implements the CPU12 core with M68HC11 instruction set compatibility, 20-bit ALU, instruction queue, and enhanced indexed addressing - enabling legacy code portability while supporting expanded memory access. Its Lite Integration Module (LIM) manages system resource mapping, clock generation via integrated PLL, interrupt control, and bus interfacing.

It supports both 16-bit wide and 8-bit narrow external bus modes, allowing cost-optimized interface to single 8-bit memory devices. The MSCAN12 module provides five receive and three transmit buffers, programmable identifier filters (2×32-bit/4×16-bit/8×8-bit), and four dedicated interrupt channels for Rx, Tx, error, and wake-up - all operating at up to 1 Mbps.

Key Specifications

Pinout & Package

MC9S12B128VPVE is housed in a 112-pin LQFP (Low-Profile Quad Flat Package) with 0.65 mm pitch, 20 mm × 20 mm body size, and exposed thermal pad per Freescale case number 987. It operates with dual supply: 5 V for I/O and A/D, 2.5 V for internal logic.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.

Compared with MC9S12B128VPVE, MC9S12B128CPVE offers identical functionality in a more thermally robust package but with higher cost and tighter assembly constraints, while S912XDP512J1MAL delivers architectural scalability at the expense of hardware compatibility and legacy toolchain support.

Availability

MC9S12B128VPVE is available at Aetrix Electronics and suitable for automotive body electronics, powertrain subsystems, and instrument cluster interfaces requiring stable component supply across extended production lifecycles.

Supply support for MC9S12B128VPVE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Freescale Semiconductor (now part of NXP Semiconductors) specialized in high-reliability microcontrollers for automotive, industrial, and networking applications before its 2015 acquisition.

The MC9S12B-Family was engineered specifically for cost-sensitive automotive multiplexing systems - delivering scalable memory/peripheral configurations while maintaining pin compatibility across 64KB–256KB Flash variants.

FAQ

What is the maximum bus speed supported by the MC9S12B128VPVE?

The MC9S12B128VPVE achieves a maximum bus speed of 25 MHz, corresponding to a 50 MHz core equivalent frequency. This speed is attainable using the on-chip PLL with an external crystal reference between 0.5 MHz and 16 MHz. The MC9S12B128VPVE maintains this performance in both single-chip and expanded bus modes, subject to proper decoupling and layout practices per Freescale's HCS12B Family Reference Manual.

Does the MC9S12B128VPVE support CAN FD or only classical CAN?

The MC9S12B128VPVE integrates the MSCAN12 module, which supports only Classical CAN (CAN 2.0A/B) at up to 1 Mbps - it does not implement CAN FD features such as flexible data-rate or extended data length. CAN FD capability was introduced in later S12X and S32K families. For MC9S12B128VPVE users requiring higher bandwidth, external CAN FD controllers must be added via SPI or parallel interface.

How many wake-up capable I/O pins does the MC9S12B128VPVE have?

The MC9S12B128VPVE has 22 wake-up capable I/O pins: Port H (8 pins), Port P (8 pins), Port J (4 pins), plus IRQ and XIRQ inputs. These pins can generate interrupts from STOP or WAIT low-power modes, enabling responsive event-driven operation while minimizing current draw. Wake-up sources are individually configurable in the SIM module's interrupt control registers.

What is the function of the VREGEN pin on the MC9S12B128VPVE?

The VREGEN pin on the MC9S12B128VPVE enables or disables the internal 5V-to-2.5V voltage regulator that powers the core logic. When pulled high, the regulator is active; when grounded, the device requires an external 2.5V supply. This pin allows system-level power architecture flexibility - for example, using a shared 2.5V rail across multiple ICs or disabling the internal regulator to improve efficiency in battery-powered standby states.

Is the MC9S12B128VPVE RoHS-compliant and lead-free?

Yes, the MC9S12B128VPVE is RoHS-compliant and lead-free, meeting EU Directive 2011/65/EU requirements. Freescale confirmed Pb-free versions retain identical functionality and electrical characteristics versus non-RoHS counterparts. The VPVE suffix denotes the 112-pin plastic LQFP package with lead-free finish; full compliance documentation is available in Freescale's Environmental Products program archive.