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NXP Semiconductors MCF51EM256CLLR — Microcontrollers & Processors (MCU / MPU / DSP)

NXP MCF51EM256CLLR 32-bit MCU, ColdFire V1, 50 MHz

MPNMCF51EM256CLLR
End of Life

NXP MCF51EM256CLLR, MCF51EM series, 32-bit ColdFire V1 MCU, 50 MHz core, 256 KB Flash, 16K x 8 RAM, I²C/SCI/SPI, LCD/PWM/WDT, -40°C to 85°C, 100-LQFP (14x14 mm), surface mount.

$15.91Ref. price · indicative, final on quote
NXP Semiconductors MCF51EM256CLLR datasheet (PDF)
Packaging100-LQFP
RoHSROHS3 Compliant
SeriesMCF51EM
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MCF51EM256CLLR specifications
ParameterValue
SeriesMCF51EM
MountingSurface Mount
Oscillator typeExternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed50MHz
PackageTape & Reel (TR); Cut Tape (CT)
RAM size16K x 8
Core size32-Bit Single-Core
PeripheralsLCD, LVD, PWM, WDT
ConnectivityI²C, SCI, SPI
Number of i (O)63
Core processorColdfire V1
Case100-LQFP
Data convertersA/D 16x12b
Program memory size256KB (256K x 8)

Product details

What this ColdFire V1 MCU brings to a metering or motor-drive BOM

The NXP MCF51EM256CLLR is a 32-bit ColdFire V1 microcontroller built for applications that need a deterministic control loop, an integrated LCD segment driver, and a wide supply range. Its 50 MHz core drives the 256 KB Flash and 16K x 8 RAM — enough headroom for a moderate firmware stack with a real-time scheduler. The peripheral set includes an LCD controller, low-voltage detect (LVD), PWM, and watchdog timer, plus I²C, SCI, and SPI connectivity. The 16-channel 12-bit ADC covers multi-sensor acquisition.

Frequently asked questions

Does the MCF51EM256CLLR have I²C and SPI interfaces?

Yes, the MCF51EM256CLLR includes I²C, SCI, and SPI connectivity. The SCI module can be configured for UART operation.

Can the MCF51EM256CLLR be used for motor control?

Yes. The 50 MHz core, PWM timer, and 16-channel 12-bit ADC make it a viable candidate for sensorless or sensored motor-control loops in applications such as pumps, fans, and small drives.