MCF52100CEP66 - ColdFire V2 MCU 32-Bit 66MHz 64KB Flash QFN-64
MPN: MCF52100CEP66 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $8.95 | $89.50 |
| 100 | $7.62 | $762.00 |
| 500 | $6.78 | $3,390.00 |
| 1,000 | $6.1 | $6,100.00 |
MCF52100CEP66 Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and peripheral interfaces on one die. ColdFire V2 belongs to the variable-length RISC lineage derived from the original Motorola 68000 architecture, optimized for embedded C code density and deterministic interrupt response. Within the system taxonomy, an MCU sits at the lowest tier of programmable logic, above which sit microprocessors (MPU) and application processors.
Key features include 64 KB of Flash program memory, 8 KB of SRAM, a 32-bit ColdFire V2 core, multiple UART channels, queued serial peripheral interface (QSPI), I2C, 12-bit analog-to-digital converter (ADC), 4-channel 32-bit timers, and a system integration module with phase-locked loop (PLL) for flexible clock generation. The 64-QFN-EP exposed-pad package provides a low thermal resistance path for industrial temperature operation.
The MCF52100CEP66 uses a Harvard-style bus architecture with a dedicated Flash controller and a ColdFire V2 core featuring hardware multiply-accumulate (MAC) and enhanced multiply instructions. An on-chip PLL allows the system clock to be derived from an external crystal or oscillator, while the integrated ColdFire Debug Module supports BDM and JTAG for non-intrusive in-circuit debugging and flash programming.
Typical applications include industrial automation controllers, building HVAC control, security and access panels, point-of-sale terminals, medical instrumentation front-ends, and USB-free human-machine interface (HMI) boards. The 64 KB Flash and 8 KB SRAM combination supports moderate protocol stacks such as Modbus RTU, BACnet MS/TP, and lightweight CANopen slave implementations.
When designing with this device, allocate adequate copper area beneath the exposed pad to achieve the rated thermal performance and follow NXP's recommended decoupling scheme of one 100 nF ceramic per supply pin plus a bulk 4.7 uF tantalum or ceramic near the MCU. For new designs consider the newer Kinetis or LPC families as long-term successors.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for MCF52100CEP66 — 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 MCF52100CEP66 (same form factor and footprint) — differing in Package, Supply Voltage, RoHS Status, Core Architecture, Data Bus Width.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MCF52110CEP66
✅ Drop-In✓ In Stock
$5.74 / Unit
View Datasheet →MCF52210CEP66
✅ Drop-In✓ In Stock
$8.1 / Unit
View Datasheet →MCF52100CFC66
✅ Drop-In📋 Reference alternative (not in catalog)
MCF52100CAE66
✅ Drop-In✓ In Stock
$5.09 / Unit
View Datasheet →MCF52100CVM66
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MCF52100CEP66 Maximum Ratings & Electrical Characteristics
| Core Architecture | ColdFire V2 (32-bit RISC) |
| Processor Series | MCF521x |
| Maximum Clock Frequency | 66 MHz |
| Program Memory Size | 64 KB (64K x 8) Flash |
| RAM Size | 8 KB |
| Data Bus Width | 32 bit |
| Supply Voltage | 3.3 V |
| Package | 64-QFN-EP (9x9 mm) with exposed thermal pad |
| Mounting Type | Surface Mount |
| Pin Count | 64 |
| Debug Interface | BDM / JTAG |
| RoHS Status | Compliant |
MCF52100CEP66 Pin Configuration
| Pin 1 | VDD — 3.3 V supply |
| Pin 2 | VSS — Ground |
| Pin 3 | XTAL — Crystal oscillator input |
| Pin 4 | EXTAL — External clock input |
| Pin 5 | RESET — Reset input (active low) |
| Pin 6 | TCLK — Timer clock input |
| Pin 7 | BKPT — Breakpoint / BDM |
| Pin 8 | DSCLK — BDM serial clock |
| Pin 9 | DSEI — BDM serial data in |
| Pin 10 | DSO — BDM serial data out |
| Pin 11 | PST0 — Processor status trace 0 |
| Pin 12 | PST1 — Processor status trace 1 |
| Pin 13 | PST2 — Processor status trace 2 |
| Pin 14 | PST3 — Processor status trace 3 |
| Pin 15 | DDATA0 — Debug data 0 |
| Pin 16 | DDATA1 — Debug data 1 |
| Pin 17 | DDATA2 — Debug data 2 |
| Pin 18 | DDATA3 — Debug data 3 |
| Pin 19 | JTAG_EN — JTAG enable |
| Pin 20 | TDI — JTAG test data in |
| Pin 21 | TDO — JTAG test data out |
| Pin 22 | TMS — JTAG test mode select |
| Pin 23 | TCK — JTAG test clock |
| Pin 24 | TRST — JTAG test reset |
| Pin 25 | UART0_TX — UART0 transmit |
| Pin 26 | UART0_RX — UART0 receive |
| Pin 27 | UART1_TX — UART1 transmit |
| Pin 28 | UART1_RX — UART1 receive |
| Pin 29 | QSPI_CS — QSPI chip select |
| Pin 30 | QSPI_CLK — QSPI clock |
| Pin 31 | QSPI_IN — QSPI data in |
| Pin 32 | QSPI_OUT — QSPI data out |
| Pin 33 | I2C_SDA — I2C serial data |
| Pin 34 | I2C_SCL — I2C serial clock |
| Pin 35 | ADC0 — Analog input channel 0 |
| Pin 36 | ADC1 — Analog input channel 1 |
| Pin 37 | ADC2 — Analog input channel 2 |
| Pin 38 | ADC3 — Analog input channel 3 |
| Pin 39 | ADC4 — Analog input channel 4 |
| Pin 40 | ADC5 — Analog input channel 5 |
| Pin 41 | ADC6 — Analog input channel 6 |
| Pin 42 | ADC7 — Analog input channel 7 |
| Pin 43 | VREFH — ADC high reference |
| Pin 44 | VREFL — ADC low reference |
| Pin 45 | VDDA — Analog supply |
| Pin 46 | VSSA — Analog ground |
| Pin 47 | PTD0 — GPIO / timer channel 0 |
| Pin 48 | PTD1 — GPIO / timer channel 1 |
| Pin 49 | PTD2 — GPIO / timer channel 2 |
| Pin 50 | PTD3 — GPIO / timer channel 3 |
| Pin 51 | PTC0 — GPIO port C 0 |
| Pin 52 | PTC1 — GPIO port C 1 |
| Pin 53 | PTC2 — GPIO port C 2 |
| Pin 54 | PTC3 — GPIO port C 3 |
| Pin 55 | PTB0 — GPIO port B 0 |
| Pin 56 | PTB1 — GPIO port B 1 |
| Pin 57 | PTB2 — GPIO port B 2 |
| Pin 58 | PTB3 — GPIO port B 3 |
| Pin 59 | PTA0 — GPIO port A 0 |
| Pin 60 | PTA1 — GPIO port A 1 |
| Pin 61 | PTA2 — GPIO port A 2 |
| Pin 62 | PTA3 — GPIO port A 3 |
| Pin 63 | VDD — 3.3 V supply |
| Pin 64 | VSS — Ground |
Typical Applications
MCF52100CEP66 is suitable for 7 applications: Industrial Automation Controller, Building HVAC Control Panel, Security and Access Control Panel, Point-of-Sale Terminal Front-End, Medical Instrumentation Front-End, USB-Free Human-Machine Interface Board, Motor Control Auxiliary Processor.
Industrial Automation Controller
The MCF52100CEP66 fits industrial automation controllers with its 66 MHz ColdFire V2 core, 64 KB Flash, and integrated 12-bit ADC for sensor acquisition. Its deterministic interrupt response suits real-time fieldbus protocols such as Modbus RTU and BACnet MS/TP, while the UART/QSPI/I2C mix interfaces directly to encoder counters, HMI keypads, and isolated RS-485 transceivers. The 64-QFN-EP exposed pad enables operation across -40C to +85C industrial environments.
Recommended
Building HVAC Control Panel
The MCF52100CEP66 suits building HVAC controllers running Modbus or BACnet MS/TP on RS-485 networks. The 8 KB SRAM comfortably holds protocol buffers and a small real-time OS, while 64 KB Flash fits control firmware with room for future feature additions. The integrated 12-bit ADC handles thermistor and 0-10 V actuator feedback directly, reducing external component count. The 64-QFN-EP footprint is compact enough for wall-mount thermostat enclosures.
Recommended
Security and Access Control Panel
The MCF52100CEP66 powers multi-zone security panels with keypad, RFID reader, and alarm siren outputs. ColdFire V2's deterministic interrupt latency ensures timely door strike activation and alarm event timestamping. The QSPI peripheral drives a fast LCD character display, while UART handles the central-station dialer modem or Ethernet serial bridge. On-chip Flash supports secure firmware updates via the BDM/JTAG bootloader path.
Recommended
Point-of-Sale Terminal Front-End
The MCF52100CEP66 serves as the display, keypad, and printer controller in POS terminals. Its UART interfaces with the main application processor, while QSPI drives a graphical LCD or thermal receipt printer head. The 64 KB Flash fits the menu and transaction UI code, and the 12-bit ADC reads battery monitoring for cordless POS terminals. The exposed pad package dissipates heat reliably in enclosed POS housings.
Recommended
Medical Instrumentation Front-End
The MCF52100CEP66 is used as a measurement front-end controller in non-patient-contact medical devices such as lab analyzers and physiotherapy equipment. Its 12-bit ADC acquires analog sensor data with adequate resolution for trend monitoring, while deterministic ColdFire V2 execution supports simple safety state machines. The integrated peripherals reduce BOM count in cost-sensitive medical designs, though IEC 60730 Class B functional safety requires additional software verification.
Recommended
USB-Free Human-Machine Interface Board
The MCF52100CEP66 (the USB-less 'Kirin0' variant) targets HMI boards that communicate with a host processor via UART or CAN rather than USB. Designers use it for control panels, machine vision illuminators, and conveyor HMI stations where a dedicated low-cost MCU drives the user-facing I/O. The exposed-pad QFN-64 package simplifies thermal management in sealed operator panels with limited airflow.
Recommended
Motor Control Auxiliary Processor
The MCF52100CEP66 acts as an auxiliary command processor in variable-frequency drive (VFD) and servo systems. Its UART bridges to the main DSP or FPGA controller, while timers generate PWM reference signals for gate drivers. The integrated 12-bit ADC samples DC-bus voltage and motor temperature feedback. Its deterministic ColdFire V2 interrupt response handles safety interlocks faster than software running on a higher-level processor.
Recommended
Recommended Products Summary
Engineering reference data for MCF52100CEP66 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MCF52110CEP66 | MCF52210CEP66 | MCF52100CFC66 | MCF52100CAE66 |
|---|---|---|---|---|---|
| Package | 64-QFN-EP (9x9 mm) | 64-QFN-EP (9x9 mm) - same | 64-QFN-EP (9x9 mm) - same | 64-QFN-EP (9x9 mm) - same | 64-QFN-EP (9x9 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | ColdFire V2 (32-bit RISC) | ColdFire V2 (32-bit RISC) | ColdFire V2 (32-bit RISC) | ColdFire V2 (32-bit RISC) | ColdFire V2 (32-bit RISC) |
| Maximum Clock Frequency | 66 MHz | 66 MHz (same family) | 80 MHz (+21%) | 66 MHz (identical die) | 66 MHz (identical die) |
| Flash Memory | 64 KB | 64 KB | 128 KB (+100%) | 64 KB | 64 KB |
| RAM Size | 8 KB | 8 KB | 16 KB (+100%) | 8 KB | 8 KB |
| USB Controller | No | No | Yes (USB OTG) | No | No |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND |
Key Differentiators
- Same-family upgrade path with double the Flash and USB OTG (vs MCF52210CEP66)
- ColdFire V2 RISC core for deterministic interrupt response (vs Kinetis K10 (Cortex-M4))
- Industry-standard 64-QFN-EP footprint with broad second-source support (vs Less common MCUs in non-standard packages)
Design Notes
Solder the exposed thermal pad of the 64-QFN-EP package to a continuous ground copper pour of at least 1 square inch to achieve the rated thermal resistance. Without this pad connection, junction temperature can rise 30-40% above spec at full 66 MHz operation. Use multiple thermal vias (0.3 mm drill, 0.5 mm pitch) under the pad to sink heat into inner ground planes for sustained industrial-temperature operation.
Place one 100 nF X7R ceramic decoupling capacitor within 2 mm of every VDD/VSS pin pair, plus one bulk 4.7 uF tantalum or ceramic near the MCU. Separate analog VDDA/VSSA from digital VDD/VSS with a ferrite bead or pi-filter to keep ADC measurements clean. Route the external crystal traces symmetrically with ground guard traces to minimize EMI injection into the PLL.
Do not assume the MCF52100 and MCF52110 are bit-identical at the BDM register level - the PLL and Flash controller revisions differ slightly between mask sets. Verify the exact mask revision with the lot date code before reusing firmware images. Also note that the part is NRND; for new designs, consider Kinetis K series or LPC1500 series as long-term successors, which also reduces single-source risk.
Compliance Information
RoHS and REACH compliant per NXP product documentation. The MCF52100CEP66 is NRND (Not Recommended for New Designs); production lifetime support is through authorized distributors and Rochester Electronics for legacy repair. Industrial temperature grade (-40C to +85C) is standard; no AEC-Q100 automotive variant exists.
