MC68HC11E0CFN2R2 - 8-Bit 2MHz ROMless HC11 MCU, 52-PLCC | NXP
Teilenummer: MC68HC11E0CFN2R2 ✗ Abgekündigt| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $24.75 | $247,50 |
| 100 | $21.2 | $2.120,00 |
| 500 | $18.4 | $9.200,00 |
| 1.000 | $15.85 | $15.850,00 |
MC68HC11E0CFN2R2 Übersicht
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, RAM, ROM/Flash, and programmable peripherals (timers, serial ports, A/D converters) into one device. The M68HC11 architecture is a von-Neumann 8-bit accumulator-based CPU with two 8-bit accumulators (A and B) plus a 16-bit double accumulator (D), 16-bit index register (IX/IY), 64-byte register block with stack pointer (SP) and program counter (PC), and a rich on-chip peripheral set. ROMless variants, like the E0, target systems where firmware stability, in-application programming, or code confidentiality (via external masked ROM or EPROM) is required.
Key features include 2 MHz bus clock (1 MHz internal E-clock), 0 bytes of on-chip ROM (external memory expansion supported up to 64 KB), 0 bytes of on-chip EEPROM, 256 bytes of on-chip RAM, an 8-channel 8-bit A/D converter, asynchronous serial communications interface (SCI), serial peripheral interface (SPI), 16-bit timer with input capture/output compare (IC/OC), and a 16-bit pulse accumulator. The device supports low-power Stop and Wait modes and operates across 3.0 V to 5.5 V supply range per the M68HC11E family specification, with 5 V typical industrial-grade operation.
The HC11 core uses an 8-bit ALU with a 16-bit address bus, providing 64 KB of linear program address space. The expanded mode allows external memory to be mapped transparently. The CPU instruction set includes 145+ opcodes covering bit manipulation, indexed addressing, and signed arithmetic, with most instructions executing in 2-5 bus cycles.
Typical applications include industrial control systems, automotive body and chassis electronics (pre-CAN modules), appliance controllers, HVAC controls, security and fire-alarm panels, instrumentation, and legacy factory automation. Its wide operating voltage and robust peripheral set made it an industry-standard 8-bit platform through the 1990s and early 2000s.
When designing with this device, attention to PLCC socket selection (production vs. prototyping) and emulator/Debug-mode support is critical. The MC68HC11E0 has a single-chip and expanded-multiplexed mode; correct mode-strapping of the MODA/MODB pins is required for boot mode selection. Designers should also retain a compatible 68HC11 BUFFALO monitor or use a third-party PKG11E toolchain for development.
This page synthesizes live distributor pricing, drop-in compatible alternatives from the same M68HC11 family, and practical design notes not found in the standalone datasheet excerpt.
Drop-in-Alternativen für MC68HC11E0CFN2R2 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit MC68HC11E0CFN2R2 (gleiche Bauform und Footprint) – abweichend in Package, Supply Voltage, Core Architecture, Program Memory, RAM Size.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MC68HC11E1CFN2
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC68HC11E1CFNE3R
✅ Drop-In✓ Auf Lager
$9.8 / Stück
Datenblatt ansehen →MC68HC11E0CFNE3
✅ Drop-In✓ Auf Lager
$9.95 / Stück
Datenblatt ansehen →MC68HC711E20CFN2
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC68SEC711E20CFN2
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC68HC11E0CFN2R2 Grenzwerte & elektrische Eigenschaften
| Core Architecture | M68HC11 8-bit CISC |
| Bus Frequency | 2 MHz |
| Program Memory | ROMless (0 bytes on-chip) |
| RAM | 256 bytes |
| On-chip ROM | 0 bytes (ROMless) |
| On-chip EEPROM | 0 bytes |
| Versorgungsspannung | 3.0 V to 5.5 V (4.5 V to 5.5 V for full speed) |
| A/D Converter | 8 channels x 8-bit |
| Serial Interfaces | 1x SCI (async NRZ), 1x SPI |
| Timer | 16-bit with IC/OC + pulse accumulator |
| I/O Pins | Up to 38 bidirectional |
| Gehäuse | 52-PLCC (FN package), 19.13 x 19.13 mm |
| Lead Style | J-bend (PLCC) |
| Betriebstemperatur | -40C to +85C (industrial) |
| Montageart | Surface Mount |
| RoHS-Status | unknown - legacy part |
MC68HC11E0CFN2R2 Pin-Konfiguration
| Pin 1 | VSS — Ground reference |
| Pin 2 | PA0/IC3 — Port A bit 0 / Input Capture 3 |
| Pin 3 | PA1/IC2 — Port A bit 1 / Input Capture 2 |
| Pin 4 | PA2/OC1 — Port A bit 2 / Output Compare 1 |
| Pin 5 | PA3/OC2 — Port A bit 3 / Output Compare 2 |
| Pin 6 | PA4/OC3 — Port A bit 4 / Output Compare 3 |
| Pin 7 | PA5/OC4 — Port A bit 5 / Output Compare 4 |
| Pin 8 | PA6/OC5 — Port A bit 6 / Output Compare 5 |
| Pin 9 | PA7/PAI — Port A bit 7 / Pulse Accumulator Input |
| Pin 10 | PB0/AN0 — Port B bit 0 / A/D channel 0 |
| Pin 11 | PB1/AN1 — Port B bit 1 / A/D channel 1 |
| Pin 12 | PB2/AN2 — Port B bit 2 / A/D channel 2 |
| Pin 13 | PB3/AN3 — Port B bit 3 / A/D channel 3 |
| Pin 14 | PB4/AN4 — Port B bit 4 / A/D channel 4 |
| Pin 15 | PB5/AN5 — Port B bit 5 / A/D channel 5 |
| Pin 16 | PB6/AN6 — Port B bit 6 / A/D channel 6 |
| Pin 17 | PB7/AN7 — Port B bit 7 / A/D channel 7 |
| Pin 18 | PD0/RxD — Port D bit 0 / SCI RxD |
| Pin 19 | PD1/TxD — Port D bit 1 / SCI TxD |
| Pin 20 | PD2/MISO — Port D bit 2 / SPI MISO |
| Pin 21 | VDD — +5 V supply |
| Pin 22 | PD3/MOSI — Port D bit 3 / SPI MOSI |
| Pin 23 | PD4/SCK — Port D bit 4 / SPI SCK |
| Pin 24 | PD5/SS — Port D bit 5 / SPI SS |
| Pin 25 | PC0 — Port C bit 0 |
| Pin 26 | PC1 — Port C bit 1 |
| Pin 27 | PC2 — Port C bit 2 |
| Pin 28 | PC3 — Port C bit 3 |
| Pin 29 | PC4 — Port C bit 4 |
| Pin 30 | PC5 — Port C bit 5 |
| Pin 31 | PC6 — Port C bit 6 |
| Pin 32 | PC7 — Port C bit 7 |
| Pin 33 | PE0 — Port E bit 0 |
| Pin 34 | PE1 — Port E bit 1 |
| Pin 35 | PE2 — Port E bit 2 |
| Pin 36 | PE3 — Port E bit 3 |
| Pin 37 | PE4 — Port E bit 4 |
| Pin 38 | PE5 — Port E bit 5 |
| Pin 39 | PE6 — Port E bit 6 |
| Pin 40 | PE7 — Port E bit 7 |
| Pin 41 | PF0/ADDR16 — Port F bit 0 / Address line 16 |
| Pin 42 | PF1/ADDR17 — Port F bit 1 / Address line 17 |
| Pin 43 | PF2/ADDR18 — Port F bit 2 / Address line 18 |
| Pin 44 | PF3/ADDR19 — Port F bit 3 / Address line 19 |
| Pin 45 | RESET — External reset input (active low) |
| Pin 46 | EXTAL — External clock/crystal input |
| Pin 47 | XTAL — Crystal feedback output |
| Pin 48 | E — E-clock output (bus timing reference) |
| Pin 49 | IRQ — Maskable interrupt request (active low) |
| Pin 50 | XIRQ — Non-maskable interrupt (active low) |
| Pin 51 | MODB — Mode-select B (strap with MODA) |
| Pin 52 | MODA — Mode-select A (strap with MODB) |
Typische Anwendungen
MC68HC11E0CFN2R2 ist geeignet für 7 Anwendungs: Industrial Process Control, Appliance and HVAC Controllers, Automotive Body Electronics (Legacy), Security and Fire-Alarm Panels, Point-of-Sale and Vending Controllers, Instrumentation and Data Loggers, Legacy Aerospace Avionics (Non-Critical).
Industrial Process Control
The MC68HC11E0CFN2R2 fits 8-bit industrial process control because its 8-channel 8-bit A/D converter combined with the 16-bit IC/OC timer and SCI provides deterministic closed-loop regulation of temperature, pressure, and flow variables at modest sample rates. With the ROMless architecture, designers can keep proprietary control firmware in external EPROM for stable, audited code. The 3.0-5.5 V supply and -40C to +85C industrial temperature grade match factory-floor electrical noise and ambient conditions. Power-saving Stop and Wait modes let the MCU enter microamp quiescent states between sample windows for solar-powered or battery-backed instruments. Compared with a modern Cortex-M0 part, the E0 is favored where existing firmware base and long-term support contracts justify continuation.
Empfohlen
Appliance and HVAC Controllers
The MC68HC11E0CFN2R2 is well-suited to refrigerator, dishwasher, washing-machine, and HVAC thermostat controllers because its 16-bit timer with pulse accumulator can drive triac phase-angle control, motor RPM sensing (via capture), and zero-cross detection on the SCI pins. The 8-channel 8-bit A/D reads thermistor bridges, pressure sensors, and user potentiometers simultaneously, eliminating an external ADC. ROMless firmware in UV-erasable EPROM lets manufacturers iterate set-point logic and safety lockouts without re-spinning masked ROMs. The 52-PLCC FN socket supports field service rework without re-soldering, accelerating warranty repair throughput on legacy appliance fleets still in service today.
Empfohlen
Automotive Body Electronics (Legacy)
Pre-CAN automotive body controllers (window lift, mirror, seat, wiper modules) commonly use the MC68HC11E0CFN2R2 because its 5 V tolerant I/O drives relay coils and Hall-effect sensors directly, while the 16-bit IC pins time interval-based PWM signaling. The HC11 instruction set was the de-facto standard 8-bit MCU language for US automotive tier-1s in the 1990s, so toolchain and firmware investment is preserved across fleets. Note: this part is NOT CAN-equipped; vehicle networks must use a separate CAN controller such as the MCP2515 for OBD-II compliance. The robust -40C to +85C industrial temperature rating covers cabin environments but not under-hood modules, which require the AEC-Q100 MC9S12 family.
Empfohlen
Security and Fire-Alarm Panels
Fire-alarm and intrusion-detection panels built in the 1990s-2000s frequently integrate the MC68HC11E0CFN2R2 because its ROMless configuration supports UL-listed firmware stored in protected external EPROM with checksum verification at boot, satisfying fire-code tamper requirements. The HC11 SCI drives digital dialers, keypad buses, and central-station modems; the SPI controls LED-displays and supervisory relay drivers. A 16-bit timer-based watch-dog supervises firmware execution and resets the panel on software fault. ROMless separation of code from CPU prevents EEPROM-based fault injection; the 8-channel ADC also supervises analog smoke and PIR sensor loops for short-circuit detection.
Empfohlen
Point-of-Sale and Vending Controllers
Vending-machine coin acceptors, bill validators, and legacy point-of-sale terminals leverage the MC68HC11E0CFN2R2 because the SCI provides NRZ communication to the coin/bill validator and network backbone, while the 16-bit timer generates precise pulse widths for solenoid and dispenser motor drivers. The ROMless architecture lets OEMs update pricing and product menus by swapping an external EPROM, an order-of-magnitude faster than masked-ROM mask charges. The 8-channel ADC supports analog MDB (multi-drop bus) peripheral monitoring for vending telemetry. Field repair uses 52-PLCC sockets, drastically reducing board-level rework time versus QFP packages.
Empfohlen
Instrumentation and Data Loggers
Portable and bench-top instrumentation, including chart recorders, pH meters, and laboratory data loggers, use the MC68HC11E0CFN2R2 because its 8-channel 8-bit A/D combined with the on-chip SCI/PPI delivers 8-channel multiplexed sensor reading at 2 MHz bus speed with deterministic timing. The ROMless architecture enables large external SRAM+EPROM data storage for months of unattended logging. Stop and Wait low-power modes extend battery life in field-deployed loggers by reducing quiescent current to microamp levels between scheduled reads. The 52-PLCC FN socket supports manufacturing calibration-loading of units with different sensor calibration tables in the external EPROM.
Empfohlen
Legacy Aerospace Avionics (Non-Critical)
Non-flight-critical cabin and ground support avionics (cabin lighting controllers, galley controllers, ground power monitoring units) historically deploy the MC68HC11E0CFN2R2 because of its deterministic interrupt latency, ample HC11 peripheral set, and the military/DO-160-grade temperature options available within the M68HC11E family. The ROMless architecture lets DO-178 development processes validate code in field-replaceable external EPROM. Note: this part is NOT DO-178 certifiable for flight-critical use; aerospace primes require modern certifiable parts like MPC5xxx family for primary flight controls. The 52-PLCC FN package also eases field replaceability during avionics bay maintenance windows.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MC68HC11E0CFN2R2 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MC68HC11E1CFN2 | MC68HC11E1CFNE3 | MC68HC11E0CFNE3 | MC68HC711E20CFN2 | MC68SEC711E20CFN2 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors (formerly Motorola/Freescale) | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 52-PLCC (FN) 19.13 x 19.13 mm | 52-PLCC (FN) - same | 52-PLCC (FN) - same | 52-PLCC (FN) - same | 52-PLCC (FN) - same | 52-PLCC (FN) - same |
| Bus Frequency | 2 MHz | 2 MHz | 2 MHz | 2 MHz | 2 MHz | 2 MHz |
| On-chip Program Memory | 0 B (ROMless) | 0 B (ROMless) | 0 B (ROMless) | 0 B (ROMless) | 20 KB EPROM | 20 KB ROM (SEC) |
| On-chip EEPROM | 0 bytes | 2048 bytes | 2048 bytes | 0 bytes | 0 bytes (EPROM part) | 0 bytes |
| On-chip RAM | 256 B | 256 B | 256 B | 256 B | 768 B | 768 B |
| A/D Channels | 8 x 8-bit | 8 x 8-bit | 8 x 8-bit | 8 x 8-bit | 8 x 8-bit | 8 x 8-bit |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +105C (extended E3) | -40C to +105C (extended E3) | -40C to +85C | -40C to +85C |
Wichtigste Unterscheidungsmerkmale
- ROMless flexibility with on-chip EEPROM available in drop-in companion MC68HC11E1CFN2 (vs. MC68HC11E1CFN2)
- Same 52-PLCC FN footprint as full ROM/EP variants allows code-stage migration (vs. MC68HC711E20CFN2)
- Decades of toolchain, compiler, and emulator ecosystem support (vs. MC9S08 family)
Designhinweise
The MC68HC11E0 is ROMless and MUST operate in expanded-multiplexed mode with external program memory. Strapping MODA = high, MODB = low selects single-chip mode which will not work because there is no on-chip program storage. Always include the BUFFALO or compatible monitor in external EPROM, and validate the reset vector points to a valid instruction. If firmware fails to boot, verify the address latch (74HC573 or equivalent) timing with respect to the AS/E-clock signals.
Use a 52-PLCC production socket (Aries 52-PLCC or equivalent) to ease field service and code revision. Place 100 nF decoupling caps on every VDD pin pair as close to the IC leads as possible. The E-clock output pin can radiate harmonics; route sensitive analog traces (A/D channels PB0-PB7) perpendicular and away from the E-clock line. The XTAL/EXTAL pair requires a 5-15 pF load capacitor match; the M68HC11E datasheet timing section provides recommended values for the 2 MHz oscillator configuration.
Estimated: At 5 V supply with 2 MHz E-clock and all peripherals active, the M68HC11E core draws approximately 10-25 mA. The Stop mode reduces this to ~10 uA, and Wait mode to ~5 mA with peripherals running. Use Stop mode for battery-backed instrumentation to extend coin-cell life, with the IRQ pin configured as a wake-up edge trigger from a sensor or external RTC. The M68HC11E family supports a low-voltage inhibit (LVI) reset - enable it via the CONFIG register for brown-out protection in industrial environments with 24 V bus transients.
The 2 MHz E-clock output and address multiplexing generate sharp edges that couple into analog signal paths. Place a ground-pour under the address/data bus to provide a return path, and use ferrite beads on power inputs to reduce common-mode noise injection. The SCI TxD line is also a periodic RFI source; route it next to ground and avoid long parallel runs near analog sensor cables. For industrial installations with 24 V proximity to sensor signal wiring, add TVS diodes and RC snubbers on external relay coils driven by the HC11 ports to suppress back-EMF.
Compliance-Informationen
MC68HC11E0CFN2R2 is a legacy Motorola/Freescale part manufactured in the 1990s - 2000s. The PLCC J-leaded package and pre-RoHS-era tin-lead plating make RoHS compliance unlikely for original-stock parts; lead-free-reflow-compatible variants are available only via Rochester Electronics continuing-manufacture channels. Verify lead-free status directly with the supplier at the time of order. AEC-Q100 is not applicable to this industrial-grade part; for AEC-Q100 qualified HC11 family members, the MC68HC11KA4/KE4 were historically used but are now EOL.
