NXP Semiconductors PCF51JF128VHS

Overview

PCF51JF128VHS from NXP Semiconductors (formerly Freescale) is a ColdFire V1-based 32-bit microcontroller with 128 KB flash, 44-pin Laminate QFN package, operating from 1.71 V to 3.6 V across –40°C to 105°C. It integrates USB OTG, 12-bit ADC/DAC, hardware cryptographic acceleration (CAU), and 10 low-power modes - deployed in industrial sensor nodes requiring secure, low-power edge processing.

For engineers reviewing the PCF51JF128VHS datasheet, PCF51JF128VHS pinout, PCF51JF128VHS application, or PCF51JF128VHS equivalent, key selection criteria include its 50 MHz V1 ColdFire core performance (0.99 DMIPS/MHz from flash), integrated USB transceiver, FlexNVM/FlexRAM memory architecture, and LLWU wakeup unit for deterministic ultra-low-power operation.

Technical Context

The PCF51JF128VHS implements a ColdFire V1 CPU core with Dhrystone-optimized execution pipeline and supports multiple clock sources via MCG and dual crystal oscillators (1 kHz–32 MHz). Its system-level integration includes Mini-FlexBus for external memory expansion and EzPort for serial programming.

Power management is centered on 10 configurable low-power modes including VLLS1–VLLS3, enabled by the Low-Leakage Wakeup Unit (LLWU) and voltage regulator (VREG). Analog subsystems feature a 12-bit SAR ADC with programmable reference, 12-bit DAC, and analog comparator with embedded 6-bit DAC.

Key Specifications

Pinout & Package

PCF51JF128VHS uses a 44-pin Laminate QFN (5 mm × 5 mm) package with exposed thermal pad. Pin assignments support multiplexed EGPIO, UART/I²C/SPI/USB/I²S interfaces, analog inputs, and dedicated debug (BDM) signals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with K22F51212 and MCF52259, PCF51JF128VHS offers optimal balance of USB integration, ultra-low-power stop modes, and hardware security - making it uniquely suited for compact, battery-operated, secure edge devices where BOM count and power budget are critical constraints.

Availability

PCF51JF128VHS is available at Aetrix Electronics and suitable for industrial sensor nodes, secure edge gateways, motor control subsystems, medical wearables, and automotive body electronics requiring stable component supply and long-term lifecycle support.

Supply support for PCF51JF128VHS 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

NXP Semiconductors is a global semiconductor company formed from the spin-off of Philips' semiconductor division, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The PCF51JF128VHS belongs to NXP's ColdFire V1 microcontroller family, designed specifically for cost-sensitive, low-power embedded applications demanding integrated USB, hardware security, and robust analog peripherals in compact QFN packages.

FAQ

What is the maximum operating frequency of the PCF51JF128VHS core?

The PCF51JF128VHS features a ColdFire V1 CPU core rated for up to 50 MHz operation. This frequency is achievable across the full –40°C to 105°C temperature range when supplied within the 1.71 V to 3.6 V voltage window and configured in FEI or FBE clock modes. At 50 MHz, the core delivers 0.99 DMIPS per MHz when executing from flash memory, enabling deterministic real-time response in control-critical applications.

Does the PCF51JF128VHS include an integrated USB transceiver?

Yes, the PCF51JF128VHS integrates a full/low-speed USB On-The-Go controller with an on-chip transceiver. This eliminates the need for external PHY components and supports device, host, and OTG roles. The USB interface operates with dedicated USB_DP and USB_DM pins and includes an internal voltage regulator (VREG) compliant with USB electrical specifications, simplifying board design and reducing BOM cost.

What low-power modes are supported by the PCF51JF128VHS?

The PCF51JF128VHS supports 10 distinct low-power modes, including RUN, WAIT, STOP, VLPR, VLPW, VLPS, LLS, and three Very Low-Leakage Stop (VLLS1–VLLS3) modes. In VLLS1 mode, typical current consumption is 1.4 μA at –40°C, retaining RAM and enabling wake-on-IRQ. These modes are managed via the Low-Leakage Wakeup Unit (LLWU) and voltage regulator (VREG), allowing precise power optimization for battery-constrained applications.

What security features does the PCF51JF128VHS provide?

The PCF51JF128VHS includes hardware-based security features: a Cryptographic Acceleration Unit (CAU) supporting AES-128/256, DES, and SHA-1/256; a Hardware Random Number Generator (RNGB); a CRC module for fast integrity checks; and a factory-programmed 128-bit unique identification number. These enable secure boot, encrypted firmware updates, and tamper-resistant device authentication without software overhead.

What package type and pin count does the PCF51JF128VHS use?

The PCF51JF128VHS uses a 44-pin Laminate QFN (LQFN) package measuring 5 mm × 5 mm with an exposed thermal pad. This package is designated by the "HS" suffix in the part number and is optimized for space-constrained industrial and portable applications. Pin assignments support multiplexed EGPIO, USB, UART, SPI, I²C, I²S, ADC, DAC, and debug interfaces as documented in the MCF51JF128 datasheet Rev. 7.