NXP Semiconductors MCF51AG96VQH

Overview

MCF51AG96VQH from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller designed for industrial and appliance control systems. It integrates 96 KB flash, 16 KB RAM, dual 12-bit ADCs (up to 24 channels), two flexible timer modules (FTM1/FTM2), and a hardware CRC engine. It operates at up to 50.33 MHz across 2.7–5.5 V and supports ultra-low-power stop modes - deployed in motor control subsystems requiring deterministic real-time response.

For engineers reviewing the MCF51AG96VQH datasheet, MCF51AG96VQH pinout, MCF51AG96VQH application, or MCF51AG96VQH equivalent, key selection criteria include its 64-pin LQFP package, ColdFire ISA_C instruction set compliance, on-chip debug visibility bus, dual HSCMP with internal DAC references, and support for DMA-driven peripheral transfers via IIC, SCI, SPI, and ADC.

Technical Context

The MCF51AG96VQH implements the ColdFire V1 CPU core with Dhrystone 2.1 performance of 0.94 DMIPS/MHz when executing from internal RAM. Its system integration module (SIM) manages clock routing between the internal frequency-locked loop (ICS), external crystal oscillator (XOSC), and peripheral clock enables - enabling dynamic power gating per module.

It features a 4-channel DMA controller supporting burst transfers to/from ADC, FTM, SCI, SPI, and IIC peripherals; interrupt handling is managed by CF1_INTC with fixed priority mapping across 44 peripheral sources and seven software-triggered levels. The device includes an advanced watchdog (WDOG) with windowed mode and independent external watchdog monitor (EWM) for fail-safe system supervision.

Key Specifications

Pinout & Package

64-pin LQFP (10 mm × 10 mm), RoHS-compliant, thermally enhanced for industrial ambient operation up to 105 °C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with K22FN512VLH12 and MCF51JM128VLF, the MCF51AG96VQH offers optimal balance of legacy ColdFire code compatibility, compact 64-pin LQFP packaging, and integrated safety features (EWM, windowed WDOG, flash block protection) for cost-sensitive industrial control upgrades.

Availability

MCF51AG96VQH is available at Aetrix Electronics and suitable for industrial motor drives, appliance control panels, sensor aggregation nodes, and smart power distribution systems requiring stable component supply across extended product lifecycles.

Supply support for MCF51AG96VQH 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.

The MCF51AG96VQH belongs to NXP's ColdFire microcontroller family, engineered for deterministic real-time control in cost-sensitive industrial and white-goods applications - emphasizing low-power operation, functional safety primitives, and seamless migration from 8-bit MCUs like the MC9S08AC128.

FAQ

What is the maximum operating frequency of the MCF51AG96VQH?

The MCF51AG96VQH operates at up to 50.33 MHz across its full voltage range (2.7 V to 5.5 V). This frequency is achievable with the internal frequency-locked loop (ICS) or external crystal oscillator (XOSC) source, and it directly governs instruction execution rate, peripheral clock domains, and real-time response latency. The MCF51AG96VQH achieves 0.94 Dhrystone 2.1 DMIPS per MHz when running from internal RAM.

Does the MCF51AG96VQH support hardware debugging during live operation?

Yes, the MCF51AG96VQH includes a single-wire background debug module (BDM) and debug visibility bus (VBUS) that enable real-time program trace without halting CPU execution. It supports six hardware breakpoints (four PC, one address pair, one data), configurable trigger conditions, and on-chip trace buffer recording - all accessible via the BKGD/MS pin. This capability is fully implemented in the MCF51AG96VQH silicon.

How many analog-to-digital converter channels does the MCF51AG96VQH support?

The MCF51AG96VQH supports up to 24 analog input channels with 12-bit resolution. Channel count depends on package: the 64-pin LQFP variant (MCF51AG96VQH) provides 19 ADC inputs, as confirmed in Table 1 of the MCF51AG128 datasheet which explicitly covers MCF51AG96 derivatives. Inputs are mapped to dedicated pins (e.g., ADP0–ADP23) with selectable right-justified output formatting and DMA/interrupt completion signaling.

What power-saving modes are available on the MCF51AG96VQH?

The MCF51AG96VQH implements three ultra-low-power stop modes (Stop1, Stop2, Stop3) and a reduced-power wait mode. In Stop3 mode, the I²C interface remains active to detect address-match wakeups, and the peripheral clock enable register allows selective module clock gating. Current consumption drops to sub-µA levels in deepest stop states, making the MCF51AG96VQH suitable for battery-backed industrial sensors and portable test equipment.

Is the MCF51AG96VQH pin-compatible with other members of the MCF51AG family?

No, the MCF51AG96VQH is not universally pin-compatible across the MCF51AG family. While it shares the 64-pin LQFP footprint with the MCF51AG128VQH, pin functions differ in lower-pin-count variants (e.g., 48-pin LQFP), and higher-pin variants (80-pin LQFP) expose additional signals like PTJ0–PTJ3 and PTH0–PTH3. Pin assignments for MCF51AG96VQH are defined in Figure 3 and Table 3 of the MCF51AG128 datasheet, confirming its unique 64-pin signal mapping.