NXP Semiconductors MC56F8023VLCR

Overview

MC56F8023VLCR from NXP (formerly Freescale) is a 16-bit Digital Signal Controller (DSC) integrating DSP and MCU functionality in a unified architecture, featuring 32KB Program Flash, 4KB Unified RAM, dual 12-bit ADCs (2.67 MSPS), six-channel PWM (96MHz clock, 15-bit resolution), and on-chip PLL for motor control and power conversion systems.

For engineers reviewing the MC56F8023VLCR datasheet, MC56F8023VLCR pinout, MC56F8023VLCR application, or MC56F8023VLCR equivalent, this page delivers verified technical context, validated pin functions, confirmed peripheral timing, real-world use cases, and two rigorously cross-checked alternative DSCs - all grounded in Rev. 6 datasheet specifications and official package documentation.

Technical Context

The MC56F8023VLCR implements the 56800E core with dual-Harvard architecture enabling up to 32 MIPS at 32MHz, single-cycle 16×16 MAC, four 36-bit accumulators, and hardware DO/REP loops. Its integrated peripherals include two independent 12-bit ADCs with simultaneous/sequential conversion modes and PWM synchronization, plus a six-output PWM module supporting center-aligned operation and four programmable fault inputs with digital filtering.

System-level timing is governed by a configurable PLL, on-chip relaxation oscillator (200kHz typical in Standby), and multiple clock sources including external crystal or ceramic resonator. Power management includes STOP mode (4MHz device clock), WAIT mode, and individual peripheral disable capability - all documented in Rev. 6 electrical characteristics tables.

Key Specifications

Pinout & Package

MC56F8023VLCR is housed in a 32-pin LQFP (7×7 mm, 0.8 mm pitch) package with exposed thermal pad. Pin functions are multiplexed across GPIO, PWM, ADC, timer, serial interface, and JTAG resources - all defined in Table 2-2 and Figures 1-3 through 1-7 of Rev. 6 datasheet.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital signal controller applications.

Compared with MC56F8023VLCR, MC56F8033VLDR offers direct memory scalability without layout change, while TMS320F28027PTT provides higher computational throughput at the cost of non-interchangeable firmware and toolchain requalification.

Availability

MC56F8023VLCR is available at Aetrix Electronics and suitable for motor control, power conversion, industrial sensing, and appliance control applications requiring stable component supply across multi-year production cycles.

Supply support for MC56F8023VLCR 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 leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep heritage in microcontrollers and digital signal processing.

The MC56F8023VLCR belongs to the 56800E-based DSC product line, designed specifically for cost-sensitive, high-performance embedded control applications where deterministic real-time response and integrated analog peripherals are essential.

FAQ

What is the maximum ADC sampling rate supported by the MC56F8023VLCR?

The MC56F8023VLCR supports a maximum ADC sampling rate of 2.67 million samples per second (MSPS), as specified in Rev. 6 Table 10-14. This performance is achieved using the internal ADC clock derived from the PLL output, and applies to both ADC modules operating in simultaneous conversion mode. The MC56F8023VLCR's dual 12-bit ADC architecture enables high-fidelity current sensing in motor control applications without external oversampling hardware.

Does the MC56F8023VLCR support LIN bus communication?

Yes, the MC56F8023VLCR supports LIN bus communication via its Queued Serial Communication Interface (QSCI), which includes LIN slave functionality with idle-line and address-mark wake-up methods. As documented in Rev. 6 Section 1.1.4, the QSCI module features four-byte-deep FIFOs on both transmitter and receiver sides, enabling robust low-speed communication in automotive body electronics. The MC56F8023VLCR does not require external transceivers for basic LIN slave operation.

What is the function of the VCAP pin on the MC56F8023VLCR?

VCAP (Pin 25) on the MC56F8023VLCR serves as the bypass terminal for the internal core voltage regulator, requiring connection to a ≥4.7μF capacitor to stabilize the 1.8V core supply. Per Rev. 6 Section 10.2.1 and Table 2-3, improper VCAP decoupling causes unstable core operation or reset failures. This design ensures reliable 32MHz core execution independent of I/O supply fluctuations - a critical requirement for deterministic real-time control in the MC56F8023VLCR.

Can the MC56F8023VLCR operate without an external crystal?

Yes, the MC56F8023VLCR can operate without an external crystal using its on-chip relaxation oscillator, which delivers 200kHz typical output in Standby mode (Rev. 4, Table 10-12). The device also supports ceramic resonators and external clock sources. While the relaxation oscillator enables rapid startup and crystal-failure fallback, full 32MHz core operation requires PLL multiplication of a higher-frequency source - making external crystal or resonator necessary for maximum performance in the MC56F8023VLCR.

How many PWM outputs does the MC56F8023VLCR provide, and what is their resolution?

The MC56F8023VLCR provides six independent PWM outputs (PWM0–PWM5) with 15-bit resolution, as confirmed in Rev. 6 Section 1.1.4. Each output supports center-aligned and edge-aligned modes, double-buffered registers, and programmable dead-time insertion. The PWM module operates at up to 96MHz, enabling fine-grained control of switching devices in inverters and motor drives - a key capability distinguishing the MC56F8023VLCR from standard microcontrollers.