NXP Semiconductors MC9S12DB128BCPV

Overview

MC9S12DB128BCPV from Freescale Semiconductor is a 16-bit HCS12 microcontroller featuring 128 KB on-chip Flash EEPROM, 8 KB RAM, dual 10-bit 8-channel ADCs (ATD0/ATD1), 8-channel 8-bit PWM, and integrated MSCAN controller. It operates at up to 25 MHz bus clock via internal PLL, supports multiple low-power modes (Stop, Wait, Pseudo Stop), and targets automotive body control modules requiring deterministic real-time response and CAN communication.

For engineers reviewing the MC9S12DB128BCPV datasheet, MC9S12DB128BCPV pinout, MC9S12DB128BCPV application, or MC9S12DB128BCPV equivalent, key selection criteria include its 112-pin LQFP package, dual ATD converters with ±1 µA input leakage, background debug interface (BKGD), and derivative-specific exclusion of CAN1, IIC, and Byteflight blocks per Document 9S12DT128BDGV1/D.

Technical Context

The MC9S12DB128BCPV implements the HCS12 CPU core with 16-bit data path, 24-bit address space, and enhanced BDM interface for in-circuit debugging. Its Clock and Reset Generator (CRG) block supports crystal (4–8 MHz), external clock, or Pierce oscillator inputs, with PLL multiplication enabling stable 25 MHz bus clock from 4 MHz reference.

Memory architecture includes 128 KB Flash organized in 2-KB sectors with 100K erase/write cycles, 2 KB EEPROM with 100K endurance, and 8 KB RAM. Peripheral integration covers two SCI modules, two SPI interfaces, ECT timer with input capture/output compare, and PIM for port configuration - all mapped into dedicated memory regions per the device memory map.

Key Specifications

Pinout & Package

MC9S12DB128BCPV is housed in a 112-pin LQFP (Low-Profile Quad Flat Package) with 0.4 mm lead pitch, case number 987, and thermal pad exposed on underside for improved heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S12DG128CPV and S912XDP512J0CMAR, the MC9S12DB128BCPV delivers optimized cost and feature set for single-CAN body electronics, omitting unused peripherals to reduce BOM and qualification effort while retaining full HCS12 software compatibility.

Availability

MC9S12DB128BCPV is available at Aetrix Electronics and suitable for automotive body control modules, door module designs, and roof console systems requiring stable component supply, long-term lifecycle support, and industrial temperature operation.

Supply support for MC9S12DB128BCPV 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) is a fabless semiconductor company specializing in microcontrollers, analog, and connectivity solutions for automotive, industrial, and consumer markets.

The MC9S12DB128BCPV belongs to the HCS12 family designed specifically for cost-sensitive automotive body electronics applications, emphasizing CAN communication, analog sensing, and robust real-time control in harsh environments.

FAQ

What is the maximum bus clock frequency supported by the MC9S12DB128BCPV?

The MC9S12DB128BCPV supports a maximum bus clock frequency of 25 MHz, achieved using the internal Phase-Locked Loop (PLL) with a 4 MHz crystal input as specified in the PLL characteristics section of the Device User Guide (fOSC = 4 MHz). This frequency is fixed for this derivative and cannot be scaled beyond 25 MHz due to internal timing constraints and qualification limits.

Does the MC9S12DB128BCPV include an I²C interface?

No, the MC9S12DB128BCPV does not include an Inter-IC Bus (IIC) interface. According to Document 9S12DT128BDGV1/D, this derivative explicitly omits IIC, CAN1, BDLC (J1850), and Byteflight blocks. The MC9S12DG128B variant includes IIC, making it the appropriate alternative if I²C sensor interfacing is required.

What package type and pin count does the MC9S12DB128BCPV use?

The MC9S12DB128BCPV uses an 112-pin LQFP (Low-Profile Quad Flat Package) with case number 987 and 0.4 mm lead pitch. Pin assignments are defined in Figure 2-1 of the Device User Guide and match those of MC9S12DT128B, MC9S12DG128B, and MC9S12DJ128B in the same package variant.

How many analog-to-digital converter (ADC) modules does the MC9S12DB128BCPV have?

The MC9S12DB128BCPV integrates two independent 10-bit Analog-to-Digital Converter (ATD) modules: ATD0 and ATD1. Each has 8 input channels and supports simultaneous sampling, with input leakage current specified at ±1 µA across the operating temperature range.

Is the MC9S12DB128BCPV pin-compatible with the MC9S12DT128B?

Yes, the MC9S12DB128BCPV is pin-compatible with the MC9S12DT128B in the 112-pin LQFP package, sharing identical pin assignments per Figure 2-1. However, functional differences exist: MC9S12DB128BCPV excludes CAN1, IIC, BDLC, and Byteflight peripherals present in MC9S12DT128B, limiting its use to single-CAN applications.