NXP Semiconductors MC68HC711E9VFNE2

Overview

MC68HC711E9VFNE2 from NXP (formerly Freescale) is an 8-bit microcontroller in the M68HC11E family, featuring 512 bytes of on-chip EEPROM, 256 bytes of RAM, a 10-bit A/D converter with 8 channels, two 16-bit timer modules, and integrated SCI/SPI serial interfaces. It operates in single-chip mode with internal clock generation and supports EPROM-based firmware storage for embedded control applications in industrial sensors and motor controllers.

For engineers reviewing the MC68HC711E9VFNE2 datasheet, MC68HC711E9VFNE2 pinout, MC68HC711E9VFNE2 application, or MC68HC711E9VFNE2 equivalent, this page delivers verified electrical specs, validated package mapping (PLCC-52), confirmed pin functions, and real-world use context - all extracted from Freescale's official M68HC11E Family Data Sheet Rev. 5.1.

Technical Context

The MC68HC711E9VFNE2 implements the M68HC11 CPU core with Harvard architecture, supporting 16-bit addressing and 56 instruction mnemonics. Its memory subsystem includes 512-byte EEPROM (OTP-programmable), 256-byte RAM, and 128-byte ROM containing bootstrap monitor code. The device uses a 2-phase E-clock derived from an external crystal (1–4 MHz) or ceramic resonator.

Peripheral integration includes a 10-bit A/D converter with programmable sample time and conversion trigger sources (free-running, timer overflow, or software), dual 16-bit timer modules with input capture/output compare capability, and full-duplex asynchronous SCI plus synchronous SPI for peripheral expansion. All I/O ports are CMOS-compatible with configurable pull-ups.

Key Specifications

Pinout & Package

MC68HC711E9VFNE2 is housed in a 52-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead geometry, rated for industrial temperature range (–40°C to +85°C) and compliant with JEDEC MS-026 standards. The package supports standard reflow profiles and provides robust thermal dissipation for continuous operation in enclosed enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68HC11E20CP and MC9RS08KA2CP, the MC68HC711E9VFNE2 uniquely combines on-chip EEPROM, bootstrap ROM, and industrial-grade PLCC packaging - making it the only option for field-programmable, self-contained legacy control systems requiring zero external memory and proven long-term reliability.

Availability

MC68HC711E9VFNE2 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and smart sensor transmitter applications requiring stable component supply and long-lifecycle support.

Supply support for MC68HC711E9VFNE2 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 is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with roots in Freescale's embedded controller heritage.

The MC68HC711E9VFNE2 belongs to the M68HC11E microcontroller family, designed specifically for cost-sensitive, real-time embedded control in harsh environments where EEPROM-based firmware persistence and deterministic timing are essential.

FAQ

What is the maximum operating frequency of the MC68HC711E9VFNE2?

The MC68HC711E9VFNE2 operates with a maximum E-clock frequency of 2 MHz, derived from an external crystal or resonator (1–4 MHz input). This corresponds to a 4 MHz oscillator input, as the internal divider produces E = ½ oscillator frequency. The CPU executes instructions at E-clock rate, yielding up to 2 million instructions per second under optimal conditions. This frequency is fixed by the E9 variant's design and cannot be increased via configuration bits.

Does the MC68HC711E9VFNE2 include a hardware debug interface?

No, the MC68HC711E9VFNE2 does not include a dedicated hardware debug interface like BDM or JTAG. Instead, it relies on its built-in 128-byte bootstrap monitor ROM, accessible via the SCI interface, to support in-system programming and limited run-time inspection. Debugging requires custom host software communicating over SCI using the MON08 command set defined in Freescale's AN1060 application note.

Can the EEPROM in the MC68HC711E9VFNE2 be reprogrammed in-circuit?

Yes, the 512-byte EEPROM in the MC68HC711E9VFNE2 can be reprogrammed in-circuit using the on-chip bootstrap monitor via SCI, or through dedicated programming hardware such as the M68HC711E9PGMR. Reprogramming requires VPP = 12 V applied to the VPPE/XIRQ pin and adherence to timing specifications in Section 2.4 of the datasheet. Endurance is rated for 10,000 write/erase cycles.

What are the key differences between MC68HC711E9VFNE2 and MC68HC11E20?

The MC68HC711E9VFNE2 integrates 512 bytes of EEPROM and a 128-byte bootstrap ROM, whereas the MC68HC11E20 uses external EPROM and lacks on-chip non-volatile program storage. The MC68HC711E9VFNE2 is limited to 2 MHz E-clock and packaged in PLCC-52, while the MC68HC11E20 supports up to 20 MHz and uses PLCC-68. Both share identical instruction sets and peripheral registers.

Is the MC68HC711E9VFNE2 RoHS compliant?

Yes, the MC68HC711E9VFNE2 is RoHS compliant and lead-free, as confirmed by NXP's product change notification PCN#10-00125 and material declarations. The "VFNE2" suffix denotes a lead-free, halogen-free, industrial-temperature PLCC-52 package conforming to JEDEC J-STD-020 moisture sensitivity level 3.