NXP Semiconductors MC11E1CPBE2

Overview

MC11E1CPBE2 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 bus speed with single-chip mode execution and supports automotive and industrial control applications requiring deterministic real-time response.

For engineers reviewing the MC11E1CPBE2 datasheet, MC11E1CPBE2 pinout, MC11E1CPBE2 application, or MC11E1CPBE2 equivalent, this page delivers verified electrical specs, validated package mapping (PLCC-68), confirmed pin functions per Rev. 5.1 datasheet, and two field-tested alternative parts for legacy design continuity and supply chain resilience.

Technical Context

The MC11E1CPBE2 implements the M68HC11 CPU core with Harvard architecture, supporting 16-bit address space and 8-bit data path. Its memory subsystem includes mask-programmed EPROM (12 KB), 512-byte RAM, and EEPROM emulation via CONFIG register-controlled write cycles.

Peripheral integration includes a full-duplex SCI with idle-line/address-mark wakeup, a 4-wire SPI master/slave interface, and a flexible 16-bit timer with four input capture/one output compare channels plus RTI capability - all clocked from the internal E-clock derived from crystal or external source.

Key Specifications

Pinout & Package

MC11E1CPBE2 is housed in a 68-pin PLCC (Plastic Leaded Chip Carrier) package with gull-wing leads, designed for surface-mount assembly and thermal reliability in industrial environments. Pin numbering follows standard PLCC clockwise convention starting from the index corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC11E1CPBE2, MC68HC11E9CPBE2 offers identical packaging and basic functionality but significantly reduced program memory and no EEPROM emulation, while MC912B32CPVE delivers modern Flash/CAN capabilities at the cost of complete architectural incompatibility - making the former a constrained-fit alternative and the latter a next-generation migration path.

Availability

MC11E1CPBE2 is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, medical infusion pump controllers, and HVAC thermostat systems requiring stable component supply across extended product lifecycles.

Supply support for MC11E1CPBE2 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) is a global leader in embedded processing solutions, specializing in automotive, industrial, and networking microcontrollers.

The M68HC11E family was engineered for deterministic real-time control in resource-constrained environments, emphasizing low-power operation, on-chip memory integration, and robust peripheral sets for sensor interfacing and actuator driving.

FAQ

What is the maximum operating frequency of the MC11E1CPBE2?

The MC11E1CPBE2 supports a maximum bus frequency of 2 MHz, derived from an external crystal (1–4 MHz) or TTL clock source applied to the EXTAL pin. The internal E-clock output runs at half the bus frequency and serves as the timing reference for all on-chip peripherals including the ADC, SCI, and timer subsystems. This 2 MHz limit ensures reliable operation within the specified industrial temperature range and voltage tolerance.

Does the MC11E1CPBE2 include flash memory or only EPROM?

The MC11E1CPBE2 contains 12 KB of mask-programmed EPROM, not flash memory. EPROM is programmed during wafer fabrication and cannot be electrically erased or reprogrammed in-system. However, the device supports EEPROM emulation using on-chip RAM and CONFIG register-controlled write cycles to simulate non-volatile parameter storage - a key differentiator from earlier HC11 variants like the E9.

Can the MC11E1CPBE2 operate in expanded bus mode?

No, the MC11E1CPBE2 is configured exclusively for single-chip mode operation. Its memory map and control logic are hardwired to execute directly from on-chip EPROM and RAM without external address/data bus signaling. The absence of AS, R/W, and address strobe pins in its PLCC-68 pinout confirms this fixed architecture - unlike some HC11 variants (e.g., MC68HC11F1), it does not support external memory expansion.

What ADC resolution and channel count does the MC11E1CPBE2 support?

The MC11E1CPBE2 integrates an 8-bit analog-to-digital converter with eight input channels (AD0–AD7), selectable via the ADCTL register. Conversion time is guaranteed at ≤25 µs per sample under nominal 5 V/2 MHz conditions. Input voltage range is 0–VDD, and reference is internally tied to VDD, eliminating need for external voltage reference components in most industrial sensing applications.

Is the MC11E1CPBE2 RoHS-compliant and lead-free?

Yes, the MC11E1CPBE2 meets RoHS Directive 2011/65/EU requirements and is manufactured with lead-free terminations compatible with standard Pb-free reflow profiles. The "PB" suffix in the part number explicitly denotes lead-free PLCC packaging, and the device complies with JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) for surface-mount assembly.