NXP Semiconductors MC68HCP11E1CFNE3,574

Overview

MC68HCP11E1CFNE3,574 from Freescale Semiconductor is an 8-bit microcontroller in the M68HC11E family featuring 512 bytes of on-chip RAM, 12 KB of EPROM, and integrated peripherals including a 8-channel 8-bit ADC, SCI, SPI, and a 16-bit timer system. It operates at up to 2 MHz internal bus speed and supports single-chip mode for embedded control in industrial sensors and motor drives.

For engineers reviewing the MC68HCP11E1CFNE3,574 datasheet, MC68HCP11E1CFNE3,574 pinout, MC68HCP11E1CFNE3,574 application, or MC68HCP11E1CFNE3,574 equivalent, key selection criteria include EPROM programmability, on-chip ADC resolution and channel count, SCI/SPI interface compatibility, and support for bootstrap programming and COP watchdog functionality.

Technical Context

The MC68HCP11E1CFNE3,574 implements the M68HC11 CPU core with Harvard architecture, supporting 16-bit addressing and 56 instruction mnemonics. Its memory map includes 12 KB EPROM (user-programmable), 512 bytes RAM, and 256 bytes of EEPROM for nonvolatile configuration storage.

Peripherals are tightly coupled to the CPU via dedicated I/O registers: the 8-channel ADC uses a successive-approximation architecture with software-selectable conversion time; the SCI supports full-duplex asynchronous communication with idle-line and address-mark wakeup; the SPI operates in master/slave mode with programmable clock polarity and phase.

Key Specifications

Pinout & Package

MC68HCP11E1CFNE3,574 is housed in a 52-pin Plastic Leaded Chip Carrier (PLCC) package with J-type leads, designed for socketed or surface-mount applications requiring mechanical robustness and thermal cycling tolerance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68HCP11E1CFNE3,574, the MC68HC11E9CP trades programmable EPROM for EEPROM-based nonvolatile storage, while the MC68HC11A8CP replaces EPROM with mask-ROM and adds ROM-based debug support - both require PCB-level evaluation for pin compatibility and peripheral register mapping alignment.

Availability

MC68HCP11E1CFNE3,574 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and legacy sensor interface modules requiring stable component supply and long-lifecycle support.

Supply support for MC68HCP11E1CFNE3,574 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

Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded controllers, analog, and RF solutions for automotive, industrial, and networking markets.

The M68HC11E family was engineered for cost-sensitive, real-time control applications where deterministic timing, on-chip memory, and peripheral integration reduce BOM count and board space.

FAQ

What is the maximum operating frequency of the MC68HCP11E1CFNE3,574?

The MC68HCP11E1CFNE3,574 supports a maximum E-clock frequency of 2 MHz, derived from an external crystal (1–4 MHz) or oscillator connected to XTAL/EXTAL pins. This defines the internal bus speed and governs instruction cycle timing, peripheral register access, and ADC conversion rate - all consistent with the M68HC11E family specification in Rev. 5.1 of the datasheet.

Does the MC68HCP11E1CFNE3,574 include on-chip EEPROM?

Yes, the MC68HCP11E1CFNE3,574 integrates 256 bytes of EEPROM for nonvolatile storage of calibration data, configuration settings, or security keys. Unlike the EPROM, this EEPROM supports byte-level erasure and reprogramming in-system without UV exposure or high-voltage programming pulses - confirmed in Section 2.5 of the M68HC11E Family Data Sheet, Rev. 5.1.

How is the MC68HCP11E1CFNE3,574 programmed after manufacturing?

The MC68HCP11E1CFNE3,574 is programmed via its bootstrap mode using the SCI interface and Freescale's PCBUG11 debugger software. This allows firmware upload and execution without pre-programmed EPROM content. Programming requires a compatible host PC, level-shifter cable, and proper initialization sequence - detailed in AN1060 and Chapter 2.2.4 of the MC68HC11E Family Data Sheet.

Can the MC68HCP11E1CFNE3,574 operate in low-power modes?

Yes, the MC68HCP11E1CFNE3,574 supports Wait and Stop modes per Section 5.6 of the datasheet. In Wait mode, the CPU halts while peripherals remain active; in Stop mode, the entire system clocks stop except for external interrupts. Both modes reduce current draw significantly - critical for battery-powered sensor nodes where the MC68HCP11E1CFNE3,574 serves as primary controller.

What debug interfaces does the MC68HCP11E1CFNE3,574 support?

The MC68HCP11E1CFNE3,574 supports hardware-assisted debugging through its built-in bootstrap monitor, accessible via the SCI port using Freescale's PCBUG11 tool. It does not include JTAG or BDM interfaces. Debugging relies on serial command execution, memory inspection, and breakpoint insertion in RAM - all documented in Appendix A and EB296 of the M68HC11E Family Data Sheet, Rev. 5.1.