NXP Semiconductors MC68S711E9CFNE2

Overview

MC68S711E9CFNE2 from Freescale Semiconductor is an 8-bit microcontroller in the M68HC11E family, featuring 512 bytes of on-chip RAM, 12 KB of EPROM, 512 bytes of EEPROM, and integrated peripherals including a 8-channel 8-bit ADC, SCI, SPI, and a 16-bit timer system with input capture/output compare. It operates at up to 3 MHz in single-chip mode and supports automotive and industrial control applications requiring nonvolatile program storage and field reprogrammability.

For engineers reviewing the MC68S711E9CFNE2 datasheet, MC68S711E9CFNE2 pinout, MC68S711E9CFNE2 application, or MC68S711E9CFNE2 equivalent, key selection criteria include EPROM programmability, on-chip EEPROM retention (≥10 years), 3.0–5.5 V supply range, 40-pin DIP package compatibility, and bootstrap-mode firmware update capability via serial interface.

Technical Context

The MC68S711E9CFNE2 implements the M68HC11 CPU core with full instruction set compatibility, supporting single-chip and expanded bus modes. Its memory subsystem includes mask-programmed EPROM (12 KB), user-programmable EEPROM (512 B), and static RAM (512 B), all mapped into a unified 64 KB address space.

Peripheral integration includes a 16-bit timer with four input capture/one output compare channels, asynchronous serial interface (SCI) with idle-line and address-mark wakeup, synchronous serial peripheral interface (SPI), and an 8-channel 8-bit analog-to-digital converter with software-selectable conversion sequences and sample-and-hold control.

Key Specifications

Pinout & Package

MC68S711E9CFNE2 is housed in a 40-pin plastic DIP (Dual In-line Package) with 0.6-inch body width and 0.1-inch pin pitch. Pin functions are defined per Freescale's M68HC11E Family Data Sheet Rev. 5.1, Section 1.4 "Pin Descriptions".

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68HC11E9CP and MC68HC11A8CP, the MC68S711E9CFNE2 uniquely combines field-programmable EPROM, integrated EEPROM, and bootstrap-mode serial programming - making it optimal for prototyping, calibration-intensive systems, and maintenance-friendly embedded deployments.

Availability

MC68S711E9CFNE2 is available at Aetrix Electronics and suitable for automotive engine management, industrial motor control, smart metering interfaces, and legacy PLC I/O expansion requiring stable component supply and long-term obsolescence mitigation.

Supply support for MC68S711E9CFNE2 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 processors, analog, and connectivity solutions for automotive, industrial, and consumer markets.

The M68HC11E family was engineered for cost-sensitive, real-time control applications demanding high reliability, low power, and integrated peripherals - especially where field firmware updates and analog signal acquisition were essential.

FAQ

What is the maximum operating frequency of the MC68S711E9CFNE2?

The MC68S711E9CFNE2 supports a maximum E-clock frequency of 3 MHz in single-chip mode. This corresponds to a 6 MHz oscillator input (since E-clock = ½ oscillator frequency). The device is characterized for reliable operation across its full 3.0–5.5 V supply range and −40°C to +85°C temperature range, with timing margins verified per Freescale's M68HC11E Family Data Sheet Rev. 5.1, Section 10.10.

Does the MC68S711E9CFNE2 support in-system programming of its EPROM?

Yes, the MC68S711E9CFNE2 supports in-system EPROM programming via Bootstrap Mode using its built-in SCI interface. This capability enables firmware updates without removing the device from the board. Programming requires a compatible host (e.g., PC running PCBUG11) and adheres to the protocol defined in Freescale Application Note AN1060 and the M68HC11E Family Data Sheet Section 2.2.4.

How much EEPROM does the MC68S711E9CFNE2 include, and what is its endurance?

The MC68S711E9CFNE2 integrates 512 bytes of on-chip EEPROM with guaranteed endurance of ≥100,000 erase/write cycles and data retention of ≥10 years at +85°C. This EEPROM is used for storing calibration constants, configuration parameters, and runtime variables that must persist across power cycles - as specified in Section 2.5 of the M68HC11E Family Data Sheet Rev. 5.1.

What package type is used for the MC68S711E9CFNE2?

The MC68S711E9CFNE2 is packaged in a 40-pin plastic dual in-line package (DIP) with 0.6-inch body width and 0.1-inch pin pitch. This through-hole package is fully compatible with standard DIP sockets and wave-soldering processes, and matches the mechanical dimensions documented in Freescale's M68HC11E Family Data Sheet Rev. 5.1, Section 11.2.

Can the MC68S711E9CFNE2 operate from a 3.3 V supply?

Yes, the MC68S711E9CFNE2 is fully specified for operation from 3.0 Vdc to 5.5 Vdc, making it compatible with 3.3 V logic systems without level-shifting circuitry. All I/O pins are 5 V tolerant, and internal regulators ensure stable core voltage across the entire supply range - as confirmed in Section 10.7 (DC Electrical Characteristics) of the M68HC11E Family Data Sheet Rev. 5.1.