MC11E1CPBE2 - 8-Bit ROMless 2 MHz MCU | NXP | 52-LQFP
MPN: MC11E1CPBE2 ✗ End of Life| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MC11E1CPBE2 Overview
A microcontroller is a semiconductor device that integrates a CPU core, memory, input/output ports, timers, and communication interfaces on one integrated circuit. In the broader hierarchy, this MC11E1CPBE2 is an 8-bit microcontroller, part of the HC11 family, and belongs to the embedded-microcontroller and semiconductor categories. Its ROMless architecture allows the application firmware to be supplied by external memory or a programming system, supporting applications where program-memory requirements vary or field programming is required.
Verified distributor data identifies the MC11E1CPBE2 as an HC11 microcontroller with a 2 MHz speed grade, ROMless configuration, 512 x 8 RAM, 38 I/O, internal oscillator, and a 52-LQFP package. The 52-terminal gull-wing package is surface-mountable and uses a 10 x 10 mm outline. Because it is ROMless, designers must verify the external memory interface and programming architecture against the original system requirements before replacing or upgrading an existing design.
Typical applications include automotive electronic control units, motor and actuator controllers, sensor interfaces, industrial automation equipment, and legacy embedded systems that depend on the M68HC11 CPU architecture. The 38-I/O count provides useful connectivity for digital sensors, switches, relays, communication transceivers, and control signals. The 2 MHz CPU speed is suitable for control-loop and supervisory tasks rather than high-bandwidth signal processing or modern high-performance applications.
The primary design consideration is legacy software compatibility. Firmware timing, interrupt priorities, memory-mapped peripherals, external bus behavior, and package-level routing must be preserved during any replacement. Engineers should obtain the manufacturer datasheet and verify the exact pinout, electrical limits, oscillator connections, reset requirements, and programming procedure before committing to a new PCB design.
This product data summarizes verified distributor specifications, package information, sourcing references, and design considerations. It does not invent electrical limits, memory-map details, or a cross-brand substitute when the supplied web results do not establish one.
Drop-in alternatives for MC11E1CPBE2 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC68HC11E1CFU3
✅ Drop-In📋 Reference alternative (not in catalog)
MC11E1CPBE2 Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit ROMless microcontroller |
| CPU / Core | HC11 / M68HC11 |
| Maximum CPU Frequency | 2 MHz |
| Program Memory | ROMless |
| RAM Size | 512 x 8 bytes |
| Number of I/O | 38 |
| Supply Voltage | 5 V |
| Oscillator | Internal |
| Package | 52-LQFP |
| Package Outline | 10 x 10 mm |
| Terminal Count | 52 terminals |
| Package Code | LQFP |
| Package Shape | Square |
| Terminal Form | Gull wing |
| Temperature Grade | Industrial |
| Mounting Type | Surface mount |
| Instruction Set | CISC |
MC11E1CPBE2 square Pin Configuration Guide
Pin configuration for MC11E1CPBE2 (square package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MC11E1CPBE2.
Refer to the datasheet for full pin configuration.
Typical Applications
MC11E1CPBE2 is suitable for 6 applications: Automotive Electronic Control Units, Motor and Actuator Control, Industrial Sensor Interface, Legacy HC11 Test and Measurement Equipment, Appliance and Embedded Control, Communication and Protocol Bridge.
Automotive Electronic Control Units
The MC11E1CPBE2 fits legacy automotive-control concepts where an 8-bit CPU, 2 MHz operating speed, 38 I/O pins, and a 52-LQFP package provide a compact controller platform. Its 512 bytes of RAM is suitable for compact state machines and supervisory functions, while the 38 I/O lines can interface with switches, sensors, actuators, and discrete control signals. Because the supplied results identify an industrial temperature grade but do not confirm AEC-Q100 qualification, vehicle programs must validate the exact part, environmental limits, traceability, and functional-safety requirements before production use.
Recommended
Motor and Actuator Control
MC11E1CPBE2 is suitable for legacy motor-control and actuator-management circuits that require deterministic digital sequencing rather than high computational throughput. Its 2 MHz HC11 core can execute control state machines, while the 38 I/O pins provide connections for position sensors, limit switches, enable signals, relay drivers, and fault inputs. The ROMless architecture is useful when application code must be loaded into external program memory, but the complete external-bus and timing details must be confirmed from the manufacturer documentation before release.
Recommended
Industrial Sensor Interface
The 38 available I/O lines make the MC11E1CPBE2 useful for legacy industrial sensor-interface boards that must consolidate discrete inputs and control outputs around one controller. Digital proximity, temperature, position, and limit sensors can be connected when their voltage levels and timing are compatible with the verified 5 V device requirement. Its 512-byte RAM is adequate for modest buffering and state management, but it is not a substitute for a modern MCU with large RAM, high-speed ADC, or advanced networking when those features are required.
Recommended
Legacy HC11 Test and Measurement Equipment
MC11E1CPBE2 can serve as the control processor in legacy test equipment where sequencing relays, reading sensors, driving displays, and coordinating service functions require stable 8-bit behavior. The 2 MHz CPU speed is adequate for supervisory tasks and deterministic I/O scheduling, while the 52-LQFP package provides a defined surface-mount footprint. Instrumentation designers must account for ROMless programming, external memory requirements, calibration storage, noise margins, and the absence of verified high-resolution analog specifications in the supplied data.
Recommended
Appliance and Embedded Control
MC11E1CPBE2 is appropriate for maintaining or reproducing older appliance-control platforms that use an HC11-compatible instruction set and external program storage. It can manage keypads, relays, displays, temperature inputs, and interlock signals while operating from a verified 5 V supply. The ROMless configuration allows firmware organization to be tailored by the original equipment designer, but external-memory sizing, programming, reset behavior, and timing must be reviewed as a complete system rather than inferred from the MPN alone.
Recommended
Communication and Protocol Bridge
MC11E1CPBE2 may be used in legacy protocol-conversion or supervisory bridge equipment when the system requires an 8-bit control processor and numerous digital interfaces. Its 38 I/O pins can support serial-device selects, interrupt lines, status indicators, and handshake signals, while the 2 MHz core can handle moderate protocol-state processing. The supplied sources do not specify UART, SPI, CAN, or other peripheral resources, so interface suitability must be confirmed from the datasheet and the original firmware memory map before implementation.
Recommended
Recommended Products Summary
Engineering reference data for MC11E1CPBE2 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC68HC11E1CFU3 |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
| Package | 52-LQFP | 52-LQFP candidate; exact package verification required |
Key Differentiators
- ROMless architecture supports externally supplied application firmware (vs MC68HC11E1CFU3)
- 52-LQFP 10 x 10 mm package (vs MC68HC11E1CFU3)
- 38 integrated I/O lines (vs MC68HC11E1CFU3)
Design Notes
Use the exact 52-LQFP land pattern and pin numbering from the manufacturer package drawing. Do not infer the footprint from the 10 x 10 mm outline alone, because lead pitch, exposed-pad details, terminal numbering, and assembly tolerances must match the exact package revision. Place bypass capacitors and clock circuitry according to the original reference design if one exists. A legacy replacement is only safe after comparing the PCB footprint and every connected signal.
Do not assume that the ROMless MC11E1CPBE2 can be programmed like a ROM-equipped MCU. Verify the external memory interface, programming signals, reset behavior, and firmware image format in the official documentation. The supplied sources do not specify the complete bus map or programming voltage, so those values must remain unspecified until confirmed. Also verify that external signals tolerate the device's 5 V electrical conditions.
Preserve the original HC11-based routing wherever practical, especially address, data, control, interrupt, and reset signals. ROMless designs may be sensitive to bus timing and memory-interface layout, so changing trace lengths, adding aggressive series termination, or relocating decoupling can alter behavior. Compare the replacement against the original schematic and datasheet pin table, then validate with bus timing tests at the intended 2 MHz operating condition.
Compliance Information
The supplied distributor results identify an industrial temperature grade but do not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. These fields remain unknown rather than inferred.
