NXP Semiconductors MC9S12B64CPVE

Overview

MC9S12B64CPVE from Freescale Semiconductor is a 16-bit automotive microcontroller featuring 64KB Flash EEPROM, 2KB RAM, 1KB EEPROM, an 8-channel 10-bit ADC, 8-channel PWM, dual SCI, SPI, I²C, and one CAN 2.0A/B module - deployed in body control modules and lighting systems requiring deterministic real-time response.

For engineers reviewing the MC9S12B64CPVE datasheet, MC9S12B64CPVE pinout, MC9S12B64CPVE application, or MC9S12B64CPVE equivalent, key selection criteria include CAN interface compatibility, 112-pin LQFP package footprint, 5V-tolerant I/O with Wake-Up capability on Ports H, J, and P, and CPU12 instruction set compatibility with legacy M68HC11 designs.

Technical Context

The MC9S12B64CPVE implements the CPU12 core with 20-bit ALU, instruction queue, and enhanced indexed addressing - fully upward compatible with M68HC11 software. Its System Integration Module (SIM) integrates clock generation (including PLL for bus speed scaling up to 25 MHz), interrupt control, memory mapping, and background debug mode (BDM) via single-wire interface.

Peripheral integration includes MSCAN12 with five RX and three TX buffers, programmable identifier filters (2×32-bit/4×16-bit/8×8-bit), and low-pass filter wake-up; TIM module with 8 input capture/output compare channels and 16-bit pulse accumulator; and ATD converter supporting external conversion triggers across 8 analog inputs in the 80-pin variant or 16 in 112-pin packages - though MC9S12B64CPVE uses the 112-pin LQFP configuration per its suffix "PVE".

Key Specifications

Pinout & Package

MC9S12B64CPVE is housed in a 112-pin LQFP package (case number 987), measuring 20 mm × 20 mm with 0.65 mm lead pitch and exposed thermal pad. The package supports 91 digital I/O lines, including 22 Wake-Up capable inputs distributed across Port H (8 pins), Port J (4 pins), Port P (8 pins), plus IRQ and XIRQ.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S12B64CPVE, MC9S12B128CPVE offers scalable memory within identical hardware constraints, while S9S12G128F0MLH delivers architectural upgrades - making the former ideal for incremental feature expansion and the latter suited for greenfield CAN FD deployments.

Availability

MC9S12B64CPVE is available at Aetrix Electronics and suitable for automotive body electronics, lighting control, climate systems, and seat comfort modules requiring stable component supply across extended production lifecycles.

Supply support for MC9S12B64CPVE 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 since 2015) specialized in high-reliability microcontrollers for automotive, industrial, and networking applications - delivering silicon with AEC-Q100 qualification and long-term manufacturing commitments.

The MC9S12B-Family was engineered for cost-sensitive automotive multiplexing systems, emphasizing pin compatibility across memory variants and integrated peripherals to reduce ECU development time and validation effort.

FAQ

What is the maximum bus speed supported by the MC9S12B64CPVE?

The MC9S12B64CPVE achieves a maximum bus speed of 25 MHz, derived from its internal PLL operating at 50 MHz core equivalent frequency. This speed applies in both single-chip and expanded bus modes, enabling deterministic timing for real-time automotive control loops. All timing-critical peripherals - including MSCAN12, TIM, and ATD - are synchronized to this bus clock, and the MC9S12B64CPVE datasheet specifies setup/hold margins validated at this rate.

Does the MC9S12B64CPVE support CAN FD or only classical CAN?

The MC9S12B64CPVE implements the MSCAN12 module compliant exclusively with CAN 2.0A/B protocols at up to 1 Mbps - it does not support CAN FD features such as flexible data-rate or extended payload length. For CAN FD capability, designers must migrate to newer families like S12G or S32K. The MC9S12B64CPVE remains suitable for legacy vehicle networks where classical CAN meets bandwidth and message density requirements.

How many analog input channels does the MC9S12B64CPVE ADC support?

The MC9S12B64CPVE includes a 16-channel, 10-bit analog-to-digital converter (ATD) accessible through dedicated pins PAD00–PAD15. All 16 channels are functional in the 112-pin LQFP package (suffix "PVE"), matching the device's physical pin count and routing capability. Channel selection, sample-and-hold timing, and external trigger synchronization are fully software configurable via the ATDCTL registers in the MC9S12B64CPVE memory map.

Is the MC9S12B64CPVE pin-compatible with other members of the MC9S12B-Family?

Yes, the MC9S12B64CPVE is fully pin-compatible with other 112-pin LQFP variants in the MC9S12B-Family, including MC9S12B128CPVE and MC9S12B256CPVE. This compatibility extends to identical pin functions, electrical characteristics, and mechanical footprint - allowing hardware reuse across memory configurations. However, pin compatibility does not extend to 80-pin QFP variants or unrelated families like S12X or S12G.

What debug interface does the MC9S12B64CPVE provide?

The MC9S12B64CPVE features a single-wire Background Debug Mode (BDM) interface using the BKGD pin, compliant with Freescale's BDM specification. This interface supports full read/write memory access, register inspection, breakpoint insertion, and flash programming without halting real-time operation. No external JTAG adapter is required - standard BDM cables and CodeWarrior IDE fully support the MC9S12B64CPVE out of the box.