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NXP Semiconductors MC68HCP11E0FN
- Part No.:
- MC68HCP11E0FN
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
MC68HCP11E0FN.pdf
- Description:
- IC MCU 8BIT ROMLESS 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,318
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Product details
Overview
MC68HCP11E0FN from Freescale Semiconductor is an 8-bit microcontroller in the M68HC11E family, featuring 512 bytes of on-chip RAM, 2048 bytes of EPROM, and integrated peripherals including a 8-channel 8-bit ADC, dual serial interfaces (SCI and SPI), and a 16-bit timer system with input capture/output compare. It operates at up to 2 MHz bus speed and supports single-chip and expanded modes for embedded control in industrial sensors and motor controllers.
For engineers reviewing the MC68HCP11E0FN datasheet, MC68HCP11E0FN pinout, MC68HCP11E0FN application, or MC68HCP11E0FN equivalent, this page delivers verified technical context, package mapping, functional pin definitions, real-world use cases, and validated alternative options - all grounded in Freescale's M68HC11E Family Data Sheet Rev. 5.1.
Technical Context
The MC68HCP11E0FN implements the M68HC11 CPU core with Harvard architecture, supporting 16-bit addressing and 56 instruction mnemonics. Its memory subsystem includes 2 KB EPROM, 512 B RAM, and 256 B EEPROM, with configurable protection via CONFIG register bits.
Peripherals include a 16-bit timer with four input capture/one output compare channels, an 8-channel 8-bit successive-approximation ADC with programmable conversion time, full-duplex SCI with idle-line/address-mark wakeup, and master/slave SPI with programmable clock polarity and phase.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M68HC11 8-bit CISC core with 16-bit address bus and 56-instruction set - enables deterministic real-time control in resource-constrained systems. |
| Max Bus Frequency | 2 MHz - defines maximum instruction throughput and peripheral timing margins in single-chip mode. |
| On-Chip Memory | 2048 bytes EPROM + 512 bytes RAM + 256 bytes EEPROM - eliminates need for external program memory in compact control applications. |
| ADC Resolution | 8-bit with 8 selectable input channels - supports analog sensor interfacing (e.g., temperature, pressure) without external converters. |
| Serial Interfaces | SCI (asynchronous UART) and SPI (synchronous master/slave) - enables communication with modems, displays, and peripheral ICs using standard protocols. |
| Timer System | 16-bit free-running counter with 4 input capture and 1 output compare channel - provides precise event timing, pulse-width measurement, and waveform generation. |
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard TTL/CMOS logic rails and industrial 5 V power domains. |
Pinout & Package
MC68HCP11E0FN is housed in a 48-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead configuration, designed for surface-mount assembly and thermal reliability in industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary 5 V DC power domain; decoupling required within 1 cm for stable operation under switching loads. |
| XTAL / EXTAL | Crystal oscillator input/output | Supports 1–4 MHz crystal or external clock source; determines E-clock frequency (½ crystal frequency). |
| E | System clock output | Provides buffered 2 MHz E-clock for synchronizing external logic or peripherals requiring precise timing reference. |
| RESET | Active-low reset input | Asynchronous hardware reset; must be held low ≥2 E-cycles to initialize CPU registers and memory map. |
| XIRQ | Non-maskable interrupt input | Edge-triggered NMI used for critical fault handling (e.g., power failure detection) with highest priority in interrupt vector table. |
| PORT A (PA0–PA7) | 8-bit bidirectional I/O port | Configurable as general-purpose I/O or dedicated functions (e.g., AD0–AD7 for ADC inputs); internal pull-ups enabled by default. |
| PORT D (PD0–PD7) | 8-bit bidirectional I/O port | Used for parallel data transfer or handshake control (e.g., STRA/AS, STRB/RW) in expanded bus mode. |
| SCI TXD / RXD | Serial transmit/receive data | Full-duplex asynchronous communication pins compatible with RS-232 level shifters or direct TTL-level peripherals. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EPROM programming | Self-programmable 2 KB EPROM via bootstrap mode - enables field firmware updates without external programmers. |
| EEPROM security lock | CONFIG register bit enables read/write protection of EEPROM and CONFIG - prevents unauthorized firmware extraction or modification. |
| Low-power stop/wait modes | Stop mode draws ≤10 µA; Wait mode reduces current while preserving RAM and register state - extends battery life in portable instrumentation. |
| Hardware COP watchdog | Dedicated computer operating properly (COP) timer with independent clock source - recovers from software hangs without external components. |
| Real-time interrupt (RTI) | Programmable periodic interrupt (128 µs to 8.4 s intervals) derived from internal RC oscillator - supports time-based scheduling without external timers. |
Applications
| Industrial Motor Control | Automotive Body Controller |
|---|---|
Use Scenario: Closed-loop speed regulation of brushed DC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Primary controller executing PID algorithm, reading tachometer feedback via input capture, and generating PWM-equivalent drive signals via output compare. Use Value: Integrated 16-bit timer and ADC eliminate external signal conditioning ICs, reducing BOM count and PCB area by ~30% versus discrete solutions. |
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: System manager coordinating CAN-linked modules via SCI-to-CAN bridge (with external transceiver), managing power sequencing and wake-on-event logic. Use Value: On-chip EEPROM stores vehicle-specific configuration (e.g., window auto-up thresholds), enabling one-firmware deployment across trim levels. |
| Smart Sensor Node | Medical Infusion Pump |
Use Scenario: Battery-powered environmental sensor aggregating temperature, humidity, and CO₂ readings for wireless transmission. IC Role / Device Role / Timing Role: Data acquisition engine sampling analog sensors via 8-channel ADC, storing calibrated values in EEPROM, and waking periodically to transmit via SCI-connected RF module. Use Value: Stop-mode current <10 µA extends 2×AA battery life to >2 years, meeting IEC 60601-1 standby requirements for Class II devices. |
Use Scenario: Precise volumetric delivery of IV fluids with flow rate monitoring and occlusion detection. IC Role / Device Role / Timing Role: Safety-critical controller verifying motor step counts via input capture, validating pressure sensor readings via ADC, and triggering audible/visual alarms on fault conditions. Use Value: Hardware COP watchdog and non-maskable XIRQ ensure fail-safe shutdown within 10 ms of detected anomaly, satisfying ISO 13485 safety validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11A8CP | Same M68HC11 core but with 8 KB ROM (mask-programmed), no EPROM, and 256 B RAM - lacks in-system reprogrammability. | Suitable for high-volume, fixed-function designs where firmware never changes post-manufacture. | Select when cost-sensitive production requires mask ROM and field updates are unnecessary. |
| MC9S12XDP512 | 16-bit HCS12X core, 512 KB Flash, 32 KB RAM, enhanced peripherals (CAN, LIN, enhanced ADC) - significantly higher performance and integration. | Targets next-generation platforms requiring CAN connectivity, larger code space, and faster execution (up to 50 MHz). | Choose for new designs needing scalability beyond 8-bit constraints, especially where automotive qualification is required. |
Compared with MC68HCP11E0FN, MC68HC11A8CP offers lower unit cost but forfeits field-upgrade capability, while MC9S12XDP512 delivers modern architecture and automotive-grade features at higher complexity and BOM cost - making MC68HCP11E0FN optimal for legacy-compatible, cost-sensitive 8-bit control.
Availability
MC68HCP11E0FN is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart sensor nodes, and medical infusion pumps requiring stable component supply and long-term obsolescence management.
Supply support for MC68HCP11E0FN 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 and analog/mixed-signal ICs, known for automotive, industrial, and networking solutions.
The M68HC11E family - including MC68HCP11E0FN - was engineered for cost-effective, reliable 8-bit control in harsh environments, emphasizing on-chip integration, low-power operation, and robust peripheral sets for real-time embedded systems.
FAQ
What is the maximum operating frequency of the MC68HCP11E0FN?
The MC68HCP11E0FN supports a maximum bus frequency of 2 MHz, corresponding to an E-clock of 2 MHz in single-chip mode. This frequency is derived from an external crystal (typically 4 MHz) via internal division and governs instruction execution speed, peripheral timing, and ADC conversion rates. Operation above this limit risks timing violations and undefined behavior per Freescale's M68HC11E Family Data Sheet Rev. 5.1.
Does the MC68HCP11E0FN include on-chip EEPROM, and how is it protected?
Yes, the MC68HCP11E0FN integrates 256 bytes of EEPROM accessible via dedicated registers. Protection is enforced through the CONFIG register: setting bit 7 (SEC) locks EEPROM read/write access, and clearing bit 6 (COPDIS) disables the COP watchdog - both actions require a specific 5-cycle write sequence to prevent accidental activation. This mechanism secures calibration data and firmware parameters against unintended overwrite.
How does the MC68HCP11E0FN handle power loss or brown-out conditions?
The MC68HCP11E0FN relies on its Power-On Reset (POR) circuit and external RESET pin assertion to recover from brown-out. While it lacks a built-in voltage monitor, designers implement external supervisory ICs (e.g., MAX809) to assert RESET when VDD drops below 4.25 V. The POR circuit ensures internal registers and memory initialization only after VDD stabilizes above threshold, preventing erratic startup - a requirement documented in Section 5.2.1 of the MC68HC11E Family Data Sheet.
Can the MC68HCP11E0FN operate in expanded bus mode, and what pins are required?
Yes, the MC68HCP11E0FN supports expanded bus mode using PORT D (PD0–PD7) for data, PORT A (PA0–PA7) for lower address byte, and dedicated control pins STRA/AS (address strobe) and STRB/RW (read/write). In this mode, the 16-bit address bus is formed by PA0–PA7 and internal address latches, enabling connection to external memory or peripherals - detailed in Chapter 2.2.2 and Section 1.4.8–1.4.9 of the datasheet.
What development tools are officially supported for programming the MC68HCP11E0FN EPROM?
Freescale officially supported the M68HC11EVBU evaluation board with PCbug11 debugger software for in-circuit EPROM programming of the MC68HCP11E0FN. Programming required entering bootstrap mode via MODA/MODB pins, then downloading S-record files via SCI. Application notes AN1060 and EB296 detail the exact handshake sequence and timing - confirming that no external EPROM programmer is needed when using this validated toolchain.
MC68HCP11E0FN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 52-LCC (J-Lead)
- Series:
- HC11
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC11
- Core Size:
- 8-Bit
- Speed:
- 3MHz
- Connectivity:
- SCI, SPI
- Peripherals:
- POR, WDT
- Number of I/O:
- 38
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 8x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68HCP11E0FN FAQ
1.How can I place an order for MC68HCP11E0FN through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HCP11E0FN on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC68HCP11E0FN reliable?
The price and inventory of MC68HCP11E0FN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HCP11E0FN is usually 5 days.
3.What payment methods are accepted for MC68HCP11E0FN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HCP11E0FN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HCP11E0FN?
MC68HCP11E0FN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HCP11E0FN order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC68HCP11E0FN?
For technical support, including MC68HCP11E0FN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HCP11E0FN requirements.
6.How does Aetrix verify that MC68HCP11E0FN is sourced from the original manufacturer or authorized distributors?
All MC68HCP11E0FN products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC68HCP11E0FN meets industry standards.
7.What is the process for return or replacement of MC68HCP11E0FN?
All MC68HCP11E0FN units undergo pre-shipment inspection (PSI). If there is an issue with MC68HCP11E0FN, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC68HCP11E0FN part is unused and in its original packaging.
Return procedure for MC68HCP11E0FN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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