NXP Semiconductors MCF51AG96CLK
- Part No.:
- MCF51AG96CLK
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MCF51AG96CLK.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 80LQFP
- Quantity:
- Payment:

- Shipping:

Inventory:4,728
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MCF51AG96CLK from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller designed for industrial control and appliance systems. It integrates a 50.33 MHz CPU, 96 KB flash, 16 KB RAM, dual 12-bit ADC (up to 24 channels), two HSCMPs, FTM/PWM timers, IIC/SCI/SPI interfaces, and hardware CRC. It serves as a high-performance upgrade path from MC9S08AC128 in motor control and sensor-based embedded systems.
For engineers reviewing the MCF51AG96CLK datasheet, MCF51AG96CLK pinout, MCF51AG96CLK application, or MCF51AG96CLK equivalent, key selection criteria include its 96 KB flash size versus 128 KB in MCF51AG128, support for 64-pin LQFP/QFP packages, ColdFire ISA_C compliance, 2.7–5.5 V operation, and integrated low-voltage detection with interrupt/reset capability.
Technical Context
The MCF51AG96CLK implements the ColdFire V1 core with Instruction Set Revision C (ISA_C), delivering 0.94 DMIPS/MHz from internal RAM. Its system clock architecture combines an external crystal oscillator (1–16 MHz or 31.25–38.4 kHz) with an internal frequency-locked loop (FLL) featuring trimmable reference for ±2% deviation across –40°C to +105°C.
Peripheral integration includes a 4-channel DMA controller supporting IIC, SCI, SPI, FTM, ADC, RTC, and eGPIO; a programmable iEvent module for combinational boolean triggers; and dual high-speed comparators with DAC-based reference. Power management comprises three ultra-low-power stop modes and peripheral clock gating via the PCE register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ColdFire V1, ISA_C revision, 32-bit RISC executing up to 50.33 MHz |
| Flash Memory | 96 KB on-chip flash with read/program/erase over full voltage/temperature range |
| RAM | 16 KB on-chip SRAM with security circuitry preventing unauthorized access |
| ADC | 12-bit resolution, up to 24 analog inputs, configurable 8-/10-/12-bit right-justified output |
| HSCMP | Two analog comparators with 4-to-1 mux inputs, programmable DAC reference, DMA support |
| Timers | Two 6-channel FTM modules, one 2-channel TPM, 16-bit free-running/modulo counters |
| Communication | 1× IIC (100 kbps), 2× SCI (NRZ, 13-bit baud), 2× SPI (8/16-bit, master/slave) |
| Supply Range | 2.7 V to 5.5 V operation with low-voltage detection and selectable trip points |
Pinout & Package
Available in 64-pin LQFP (10 mm × 10 mm) and 64-pin QFP (14 mm × 14 mm) packages. Pin functions are package-dependent per Table 3 of the MCF51AG128 datasheet; the MCF51AG96CLK supports all 64-pin variants but excludes pins reserved for 80-pin-only features (e.g., PTJ0–PTJ3, PTH0–PTH3, PTC4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0/EWM_in | External Watchdog Monitor input | Accepts external watchdog pulse to prevent system reset; enables coordinated fail-safe monitoring |
| PTA1/EWM_out | External Watchdog Monitor output | Drives external circuits requiring watchdog supervision; complements internal WDOG |
| PTB0–PTB7/ADP18–ADP11 | Analog input / GPIO port B | Up to 8 ADC channel inputs; configurable as digital I/O with glitch filter and pull-up/down |
| PTD0–PTD7/ADP10–ADP7 | Analog input / GPIO port D | Includes CMP1OUT, C1IN2/C1IN3; supports comparator outputs and analog sensing |
| PTE0–PTE7/RGPIO0–RGPIO7 | Rapid GPIO / SCI1 / SPI1 | 16-bit local bus-connected I/O with set/clear/toggle; also serves UART and SPI primary interface |
| PTF0–PTF7/RGPIO8–RGPIO15 | Rapid GPIO / FTM1/FTM2 | Supports PWM outputs, fault inputs (FTM1FLT), and timer channel assignments (CH0–CH5) |
| PTG5/EXTAL & PTG6/XTAL | Crystal oscillator terminals | Drive external crystal (1–16 MHz) or ceramic resonator (31.25–38.4 kHz) for system clock source |
| BKGD/MS | Background debug interface | Single-wire BDM interface for real-time debugging, breakpoint setting, and trace buffer access |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC module | 16-bit shift register implementing CRC16-CCITT (x¹⁶ + x¹² + x⁵ + 1); enables fast error detection for firmware updates and data integrity checks |
| Advanced watchdog (WDOG) | Independent clocked watchdog with windowed mode, high-granulation timeout, and forced reset-prevents runaway code without software intervention |
| Programmable iEvent logic | Four input channels combined via boolean logic to generate interrupt/DMA/hardware trigger signals-replaces discrete glue logic in timing-critical subsystems |
| Ultra-low-power stop modes | Three stop modes with sub-µA current draw; peripheral clocks disabled selectively to minimize wake-up latency and power consumption |
| On-chip temperature sensor | Integrated analog sensor feeding ADC channel; enables thermal monitoring without external components in sealed enclosures |
| Security circuitry | Prevents unauthorized read-out of flash and RAM contents via background debug interface-supports IP protection in production firmware |
Applications
| Industrial Motor Control | Smart Appliance UI |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with hall-effect feedback and current sensing in HVAC blowers or washing machine drums. IC Role / Device Role / Timing Role: Primary MCU executing FOC algorithms, managing 6-channel FTM PWM outputs with deadtime insertion, sampling ADC at 12-bit resolution for phase currents. Use Value: Integrated 96 KB flash stores complex motion profiles; hardware CRC validates firmware updates over CAN or UART; dual HSCMPs monitor overcurrent events with <1 µs response. | Use Scenario: Touchless user interface with capacitive proximity sensing and LED dimming in refrigerators or ovens. IC Role / Device Role / Timing Role: System controller interfacing capacitive sense buttons (via ADC), driving RGB LEDs (via FTM PWM), and communicating with display via IIC. Use Value: RGPIO pins toggle LEDs at CPU clock speed; iEvent module generates hardware-triggered ADC conversions synchronized to touch scan cycles; low-voltage warning prevents UI freeze during brownout. |
| Energy Metering Subsystem | Factory Automation Sensor Node |
Use Scenario: Secondary metering unit measuring voltage/current harmonics and reporting via RS-485 in smart grid endpoints. IC Role / Device Role / Timing Role: Dedicated ADC acquisition engine with asynchronous sampling triggered by RTC, feeding DMA to RAM for FFT processing. Use Value: 24-channel ADC supports simultaneous voltage/current/temperature sampling; hardware CRC ensures integrity of meter calibration data stored in flash; SCI2 supports isolated RS-485 communication. | Use Scenario: DIN-rail mounted IO module collecting analog sensor data (pressure, temp) and controlling solenoids in PLC periphery. IC Role / Device Role / Timing Role: Real-time I/O concentrator with programmable debounce, analog conditioning, and deterministic SPI slave interface to main controller. Use Value: Programmable glitch filter on all GPIO inputs rejects EMI in industrial noise environments; EWM_out drives external safety relay; PDB provides precise delay for valve actuation timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCF51AG128 | 128 KB flash, identical peripherals and pinout in 64-pin packages; same ColdFire V1 core and ISA_C | Supports larger firmware images and more complex RTOS stacks; no functional change in motor control or sensor node use cases | Select when firmware exceeds 96 KB or future scalability requires headroom without PCB redesign |
| Kinetis K22F51212 | ARM Cortex-M4F core, 512 KB flash, 128 KB RAM, higher DMIPS/MHz; lacks ColdFire-specific BDM and iEvent logic | Requires toolchain migration and peripheral driver rewrite; better suited for floating-point intensive tasks like predictive maintenance analytics | Choose for new designs prioritizing ARM ecosystem, USB OTG, or Ethernet MAC; not drop-in compatible with MCF51AG96CLK |
Compared with MCF51AG128, the MCF51AG96CLK offers identical peripheral functionality and package compatibility at reduced flash capacity-ideal for cost-sensitive industrial nodes where firmware footprint is constrained. Against Kinetis K22F51212, it trades raw compute for deterministic ColdFire real-time behavior, smaller memory footprint, and legacy toolchain continuity.
Availability
MCF51AG96CLK is available at Aetrix Electronics and suitable for industrial motor control, smart appliance UI, and factory automation sensor nodes requiring stable component supply and long-term lifecycle support.
Supply support for MCF51AG96CLK 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 develops secure, scalable semiconductor solutions for automotive, industrial, IoT, and mobile applications, with leadership in MCU, RF, and analog technologies.
The MCF51AG96CLK belongs to NXP's ColdFire V1 microcontroller family, engineered for deterministic real-time performance in cost-sensitive industrial and appliance control systems where reliability, low power, and integrated analog peripherals are critical.
FAQ
What is the maximum operating frequency of the MCF51AG96CLK?
The MCF51AG96CLK operates at up to 50.33 MHz across its full 2.7–5.5 V supply range and –40°C to +105°C ambient temperature. This frequency is achievable using either the internal FLL (driven by XTAL/EXTAL or internal reference) or direct crystal oscillator input. Performance is validated per the MCF51AG128 datasheet Rev. 5, which explicitly covers MCF51AG96 derivatives.
Does the MCF51AG96CLK support the same pinout as the MCF51AG128 in 64-pin packages?
Yes-the MCF51AG96CLK shares identical pin assignments with the MCF51AG128 in both 64-pin LQFP and 64-pin QFP packages, as confirmed in Table 3 ("Pin Availability by Package Pin-Count") of the MCF51AG128 datasheet. All 64-pin signals-including RGPIO, FTM, ADC, and communication interfaces-are functionally identical between the two parts.
How many analog-to-digital converter channels does the MCF51AG96CLK support?
The MCF51AG96CLK supports up to 24 analog input channels in the 64-pin package, matching the MCF51AG128 specification. Channel count scales down to 19 in 48-pin variants and remains fully compatible with the 12-bit ADC module's features: programmable resolution (8/10/12-bit), right-justified output, and hardware-triggered conversions via RTC, PDB, or iEvent.
What debug interface does the MCF51AG96CLK provide?
The MCF51AG96CLK includes a single-wire Background Debug Mode (BDM) interface via the BKGD/MS pin, supporting real-time debugging, six hardware breakpoints (4 PC, 1 address pair, 1 data), on-chip trace buffer, and debug visibility bus (VBUS) for program trace. This is consistent across all MCF51AG128-series derivatives, including MCF51AG96CLK.
Is the MCF51AG96CLK qualified for industrial temperature range operation?
Yes-the MCF51AG96CLK is rated for operation from –40°C to +105°C ambient temperature, as specified in the "Thermal Characteristics" section (Table 6) and "Electrical Characteristics" (Section 2) of the MCF51AG128 datasheet Rev. 5, which explicitly covers the MCF51AG96 derivative. This includes full functionality of ADC, flash programming, and low-voltage detection across the range.
MCF51AG96CLK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-LQFP
- Series:
- MCF51AG
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- Coldfire V1
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, SCI, SPI
- Peripherals:
- DMA, LVD, PWM, WDT
- Number of I/O:
- 69
- Program Memory Size:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 24x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MCF51AG96CLK FAQ
1.How can I place an order for MCF51AG96CLK through Aetrix?
Please submit a Request for Quotation (RFQ) for MCF51AG96CLK on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCF51AG96CLK reliable?
The price and inventory of MCF51AG96CLK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCF51AG96CLK is usually 5 days.
3.What payment methods are accepted for MCF51AG96CLK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCF51AG96CLK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCF51AG96CLK?
MCF51AG96CLK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCF51AG96CLK order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCF51AG96CLK?
For technical support, including MCF51AG96CLK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCF51AG96CLK requirements.
6.How does Aetrix verify that MCF51AG96CLK is sourced from the original manufacturer or authorized distributors?
All MCF51AG96CLK products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCF51AG96CLK meets industry standards.
7.What is the process for return or replacement of MCF51AG96CLK?
All MCF51AG96CLK units undergo pre-shipment inspection (PSI). If there is an issue with MCF51AG96CLK, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCF51AG96CLK part is unused and in its original packaging.
Return procedure for MCF51AG96CLK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCF51AG96CLK Tags

-
ATTINY4-TSHR
Microchip Technology

-
ATTINY10-TSHR
Microchip Technology

-
ATTINY10-TS8R
Microchip Technology

-
ATTINY202-SSNR
Microchip Technology

-
ATTINY202-SSFR
Microchip Technology

-
ATTINY402-SSNR
Microchip Technology

-
PIC16F15213T-I/MF
Microchip Technology

-
PIC16F15213-E/MF
Microchip Technology

-
PIC10F200T-I/OT
Microchip Technology

-
ATTINY412-SSNR
Microchip Technology

-
PIC10F202T-I/OT
Microchip Technology

-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

