MCF51AG96CLK - ColdFire V1 32-bit MCU 96KB Flash 80-LQFP | NXP
MPN: MCF51AG96CLK ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.8 | $1,380.00 |
| 500 | $11.95 | $5,975.00 |
| 1,000 | $10.4 | $10,400.00 |
MCF51AG96CLK Overview
An MCU (microcontroller) is a single-chip computer that integrates a processor core, program memory, RAM, and peripherals (timers, ADC/DAC, communication interfaces) into one device. Within the broader hierarchy, the MCF51AG96CLK sits in the 32-bit RISC MCU category, which itself falls under embedded microcontrollers and ultimately semiconductors. ColdFire V1 is NXP's 32-bit variable-length RISC architecture optimized for low power and deterministic performance in appliance, industrial, and metering applications.
The MCF51AG96CLK differentiates with on-chip op-amps, a 16-channel 16-bit ADC (differential mode available), a 12-bit DAC with voltage reference, and segment-LCD support up to 64 segments. It offers 16KB RAM, 96KB flash, 8KB FlexMemory EEPROM emulation, and a 32-channel timer/PWM system. Multi-function communication includes MSCAN (CAN 2.0B), I2C, SCI/UART, and SPI. Hardware cryptography support includes DES, 3DES, AES, and SHA accelerators for secure metering nodes.
ColdFire V1 uses a pipelined variable-length RISC core delivering up to 50.33 MIPS at 50MHz, with code density comparable to legacy 8-bit architectures. The integrated analog block reduces BOM by combining ADC, DAC, op-amps, and Vref on-chip, enabling single-chip data acquisition for metering and motor control subsystems. Integrated LCD drivers and crypto accelerators further reduce external component count.
Typical applications include smart electricity meters, industrial process controllers, HVAC controls, security systems, and point-of-sale terminals. The integrated op-amps and ADC simplify current-sensing and voltage-monitoring front ends; the LCD driver drives segmented displays directly.
When designing with this device, ensure decoupling capacitors are placed within 5mm of each power pin and that the analog and digital ground planes are connected at a single point near the MCU. CodeWarrior/CodeWarrior for Microcontrollers remains the supported IDE, though community GCC toolchains now exist for ColdFire V1.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MCF51AG96CLK — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MCF51AG96CLK (same form factor and footprint) — differing in Package, ADC, Communication Interfaces, Core Architecture, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MCF51AG128CLK
✅ Drop-In📋 Reference alternative (not in catalog)
MCF51AG64CLK
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MCF51AG96CLH
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MCF51AG96CLKE
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MCF51AG128CLKE
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MCF51AG96CLK Maximum Ratings & Electrical Characteristics
| Core Architecture | ColdFire V1 (32-bit RISC) |
| Core Clock Speed | Up to 50.33 MHz |
| Program Flash Memory | 96 KB |
| Operating Voltage | 3.3 V / 5 V |
| Package | 80-pin LQFP (14x14) |
| Pin Count | 80 |
| Mounting Type | Surface Mount |
| ADC | 16-bit, 16 channels (per datasheet family) |
| DAC | 12-bit (per datasheet family) |
| CAN | MSCAN (CAN 2.0B) - per datasheet family |
| Communication Interfaces | I2C, SCI/UART, SPI (per datasheet family) |
| LCD Driver | Up to 64 segments (per datasheet family) |
| Hardware Crypto | DES / 3DES / AES / SHA accelerators (per datasheet family) |
| RoHS Status | Compliant (per distributor listings) |
MCF51AG96CLK 80-pin lqfp (14x14) Pin Configuration Guide
Pin configuration for MCF51AG96CLK (80-pin lqfp (14x14) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MCF51AG96CLK.
Refer to the datasheet for full pin configuration.
Typical Applications
MCF51AG96CLK is suitable for 6 applications: Smart Electricity Meters, HVAC Climate Control Systems, Industrial Process Controllers, Security and Alarm Panels, Point-of-Sale Terminals, White Goods and Appliance Control.
Smart Electricity Meters
The MCF51AG96CLK is purpose-built for single-phase and poly-phase electricity meters. Its integrated 16-bit ADC samples current and voltage simultaneously with 16 channels of input mux, while on-chip op-amps provide the gain stage for shunt or CT current sensing - eliminating external signal conditioning. Hardware AES/SHA/DES accelerators accelerate secure authentication and tamper detection required by IEC 62056 / DLMS/COSEM protocols. The 96KB flash hosts metering firmware plus a metering kernel, with FlexMemory used for EEPROM emulation of billing logs.
Recommended
HVAC Climate Control Systems
The MCF51AG96CLK's ColdFire V1 core runs real-time PID control loops for variable-speed fan, compressor, and damper actuators. The 12-bit DAC drives 0-10V analog control signals for legacy HVAC actuators while the 16-bit ADC reads thermistor bridges with 1mV resolution. Segment LCD driver up to 64 segments displays temperature setpoints, fan speed, and fault codes directly. CAN bus (MSCAN) ties indoor and outdoor units into a coordinated HVAC network, and 5V-tolerant I/O simplifies interfacing with industrial HVAC controls.
Recommended
Industrial Process Controllers
In process control the MCF51AG96CLK reads 4-20mA loops via its ADC and drives actuator outputs from its 12-bit DAC. The 32-channel timer/PWM subsystem generates precision PWM for proportional valve control, heater PWM, and motor commutation. Hardware crypto accelerators authenticate field devices in industrial IoT gateways. The integrated LCD interface supports local operator panels without a separate display driver, and the 5V/3.3V dual supply eases integration into mixed-voltage industrial backplanes.
Recommended
Security and Alarm Panels
Security alarm panels use the MCF51AG96CLK's AES/DES hardware accelerators for encrypted sensor communication, while its 16-channel ADC reads analog sensors including PIR motion detectors and glass-break sensors. The MSCAN bus connects multiple panel zones and the keypad, and the LCD driver displays status information on the panel face. Hardware Watchdog and Low-Voltage Detect ensure the panel resets cleanly on brownout, a critical requirement for UL-listed security installations.
Recommended
Point-of-Sale Terminals
POS terminals require secure PIN entry and card-data handling - the MCF51AG96CLK's AES/SHA accelerators encrypt cardholder data at the point of swipe, while the ColdFire V1 core runs the payment application and PCI/PED stack. The 96KB flash hosts the firmware with FlexMemory used for transaction audit logs. The segment LCD displays transaction amounts and PIN prompts, and SCI/UART interfaces connect to receipt printers and cash drawers. Hardware crypto acceleration keeps latency low during PIN block encryption.
Recommended
White Goods and Appliance Control
Washing machines, dishwashers, and ovens use the MCF51AG96CLK as the main appliance controller. The ColdFire V1 core runs motor control algorithms for variable-speed drum or fan drives via the 32-channel PWM. The 16-bit ADC reads temperature sensors (NTC), water level sensors, and motor current for closed-loop control. Integrated LCD drives the front-panel display, and CAN bus links inverter and control boards. Hardware Watchdog and LVD ensure the appliance recovers safely from line-voltage glitches.
Recommended
Recommended Products Summary
Engineering reference data for MCF51AG96CLK — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MCF51AG128CLK | MCF51AG64CLK | MCF51AG96CLH | MCF51AG96CLKE |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 80-LQFP (14x14) | 80-LQFP (14x14) - same | 80-LQFP (14x14) - same | 80-LQFP (14x14) - same | 80-LQFP (14x14) - same |
| Core | ColdFire V1 32-bit | ColdFire V1 32-bit | ColdFire V1 32-bit | ColdFire V1 32-bit | ColdFire V1 32-bit |
| Core Clock | 50.33 MHz | 50.33 MHz | 50.33 MHz | 50.33 MHz | 50.33 MHz |
| Program Flash | 96 KB | 128 KB (+33%) | 64 KB (-33%) | 96 KB (same) | 96 KB (same) |
| Operating Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
| Pin Count | 80 | 80 | 80 | 80 | 80 |
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Integrated analog block eliminates external components (vs MCF51AG128CLK)
- Hardware crypto accelerators for secure metering (vs MCF51AG64CLK)
- Segment LCD up to 64 segments on-chip (vs MCF51AC256ACLKE)
Design Notes
Place a 0.1uF decoupling capacitor within 5mm of each VDD/VSS pair and bulk 4.7-10uF capacitors at the board's power entry. The MCF51AG96CLK's analog and digital supplies (VDDA/VSSA) should be filtered separately from the digital core supply with a ferrite bead and dedicated LDO to keep ADC noise below 1 LSB. A single-point ground connection between analog and digital ground planes near the MCU's VSSA pin minimizes ground-loop noise on ADC measurements.
Estimated: At maximum core frequency 50.33MHz with all peripherals active, the MCF51AG96CLK's core supply current is approximately 35-45mA, dissipating roughly 130-165mW in the 80-LQFP package. The 80-LQFP has a theta_JA of approximately 50 C/W, yielding a 6-8C junction rise above ambient - well within the package's thermal envelope. No external heatsink is required. For closed-package industrial environments above 70C ambient, verify margin against the datasheet's thermal derating curves.
Route the external crystal/oscillator traces short and symmetric to the XTAL pins with a grounded guard ring. Place the analog input traces away from digital switching signals; if unavoidable, use a ground trace between analog and digital nets. The RESET pin requires a 10k pull-up and 0.1uF capacitor to VDD, with the capacitor placed within 5mm of the pin. ADC reference (VREFH/VREFL) pins should bypass with 0.1uF and 10uF caps placed close to the pins for ADC accuracy below 1 LSB.
Estimated: Programming flash at below 2.7V can cause write errors - ensure VDD is within spec during flash operations. The FlexMemory EEPROM-emulation region requires a wear-leveling algorithm to reach its rated 100K erase cycles - implement a round-robin block rotation in firmware. Background Debug Mode (BDM) requires the BKGD pin to be accessible; route it to a test point or dedicated connector for field firmware updates. The on-chip op-amps have a unity-gain bandwidth of approximately 5MHz - keep loop gains below this for stable operation.
Compliance Information
RoHS compliant per NXP product listings. REACH status not explicitly stated in verified data. AEC-Q100 not applicable - this is an industrial/appliance part, not automotive.
