MC68L11F1CFNE3 - 8-Bit HC11 MCU, 1KB RAM, ROMless, 68-PLCC | NXP
Référence : MC68L11F1CFNE3 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $38.5 | $38,50 |
| 10 | $32.4 | $324,00 |
| 100 | $26.1 | $2 610,00 |
| 500 | $22.75 | $11 375,00 |
| 1 000 | $19.95 | $19 950,00 |
MC68L11F1CFNE3 Présentation
An 8-bit microcontroller (MCU) is a single-chip processor that integrates a CPU, memory, and peripheral I/O on one die. Within the broader semiconductor taxonomy, an MCU sits under microcontrollers, then embedded processors, then processors, then semiconductors. The HC11 (sometimes called 6811) is a classic CISC 8-bit architecture developed by Motorola (now NXP/Freescale). It is the foundation of the M68HC11 family of microcontrollers, widely used in automotive, industrial, and consumer embedded applications where deterministic control loops and mature toolchain support are valued over raw performance.
Key features of the MC68L11F1CFNE3 include 1 KB of SRAM, 512 bytes of EEPROM for non-volatile parameter storage, a nonmultiplexed expanded bus for external memory, and a 3.3 V/5 V dual-voltage supply. The 68-pin PLCC chassis provides a robust through-hole-replacement surface-mount footprint suitable for legacy and industrial designs, and the device is characterized by high speed combined with low power consumption under its fully static CMOS design.
Architecturally, the MC68L11F1CFNE3 is an enhanced derivative of the M68HC11 family, adding peripheral integration while retaining the original HC11 instruction set for software compatibility. The fully static design allows the CPU clock to be slowed or stopped (DC operation) without losing register state, simplifying low-power design. The 3 MHz internal bus rate and CISC instruction set make it well suited to bit-banging real-time I/O rather than DSP-style workloads.
Typical applications include automotive body and chassis controllers, industrial automation and sensor interfacing, legacy embedded control boards, instrumentation front-ends, and replacement of end-of-life 68HC11 designs. The 3.3 V/5 V supply tolerance makes it compatible with both 5 V legacy logic and 3.3 V modern ASICs.
When designing with the MC68L11F1CFNE3, ensure the external program memory interface timing matches the CPU frequency and add a supervisor/reset circuit to drive the bidirectional RESET pin. Note that NXP has marked this part as No Longer Manufactured; long-term supply should be sourced through authorized distributors stocking factory-traceable inventory. For new designs, consider modern 32-bit Cortex-M alternatives unless pin/footprint compatibility is required.
This page synthesizes drop-in alternatives, distributor pricing tier curves, lifecycle status, and practical design notes not found in any single manufacturer datasheet — useful for engineers maintaining legacy 68HC11 systems and for procurement teams verifying second-source supply.
Alternatives de remplacement direct pour MC68L11F1CFNE3 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC68L11F1CFNE3 (même facteur de forme et même empreinte) — différant par Core, Mounting Type, Package, RAM Size, Supply Voltage.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC68HC11F1CFNE3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68HC11F1CFNE2
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MCHC11F1CFNE3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68HC11E0CFNE3R
✅ Remplacement direct✓ En stock
$9.95 / unité
Voir la fiche technique →MC68L11F1CFNE3R
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68L11F1CFNE3 Valeurs maximales et caractéristiques électriques
| Core | HC11 |
| Processor Series | M68HC11 (HC11 family) |
| Largeur du bus de données | 8-bit |
| Fréquence d'horloge maximale | 3 MHz |
| Program Memory Type | ROMless (external memory required) |
| RAM Size | 1 KB |
| EEPROM Size | 512 bytes |
| Tension d'alimentation | 3.3 V / 5 V |
| Bus Type | Nonmultiplexed expanded bus |
| Boîtier | 68-PLCC (24.21 x 24.21 mm) |
| Type de montage | Surface Mount (PLCC socket compatible) |
| Architecture | CISC, fully static CMOS |
| Lifecycle | Obsolete (per NXP product page) |
| Manufacturer | NXP Semiconductors (formerly Freescale / Motorola) |
Configuration des broches de MC68L11F1CFNE3
| Broche 1 | VSS — Ground (0 V) |
| Broche 2 | VDDR — MCUs with A/D, this pin powers the A/D subsystem |
| Broche 3 | VDD — Main +5 V (or +3.3 V for 'L' variant) supply |
| Broche 4 | PA7/PAI/OC1 — Port A bit 7 / Pulse Accumulator Input / Output Compare 1 |
| Broche 5 | PA6/OC2/OC1 — Port A bit 6 / Output Compare 2 / Output Compare 1 |
| Broche 6 | PA5/OC3/OC1 — Port A bit 5 / Output Compare 3 / Output Compare 1 |
| Broche 7 | PA4/OC4/OC1 — Port A bit 4 / Output Compare 4 / Output Compare 1 |
| Broche 8 | PA3/OC5/IC4/OC1 — Port A bit 3 / Output Compare 5 / Input Capture 4 / OC1 |
| Broche 9 | PA2/IC3 — Port A bit 2 / Input Capture 3 |
| Broche 10 | PA1/IC2 — Port A bit 1 / Input Capture 2 |
| Broche 11 | PA0/IC1 — Port A bit 0 / Input Capture 1 |
| Broche 12 | VRL — A/D reference low (typically connected to VSS) |
| Broche 13 | VRH — A/D reference high (typically connected to VDD) |
| Broche 14 | PE7 — Port E bit 7 / digital I/O |
| Broche 15 | PE6 — Port E bit 6 / digital I/O |
| Broche 16 | PE5 — Port E bit 5 / digital I/O |
| Broche 17 | PE4 — Port E bit 4 / digital I/O |
| Broche 18 | PE3 — Port E bit 3 / digital I/O |
| Broche 19 | PE2 — Port E bit 2 / digital I/O |
| Broche 20 | PE1 — Port E bit 1 / digital I/O |
| Broche 21 | PE0 — Port E bit 0 / digital I/O |
| Broche 22 | PG7 — Port G bit 7 (address bit / general I/O on F1 expanded bus) |
| Broche 23 | PG6 — Port G bit 6 (expanded bus) |
| Broche 24 | PG5 — Port G bit 5 (expanded bus) |
| Broche 25 | PG4 — Port G bit 4 (expanded bus) |
| Broche 26 | PG3 — Port G bit 3 (expanded bus) |
| Broche 27 | PG2 — Port G bit 2 (expanded bus) |
| Broche 28 | PG1 — Port G bit 1 (expanded bus) |
| Broche 29 | PG0 — Port G bit 0 (expanded bus) |
| Broche 30 | PC7 — Port C bit 7 / address bus |
| Broche 31 | PC6 — Port C bit 6 / address bus |
| Broche 32 | PC5 — Port C bit 5 / address bus |
| Broche 33 | PC4 — Port C bit 4 / address bus |
| Broche 34 | PC3 — Port C bit 3 / address bus |
| Broche 35 | PC2 — Port C bit 2 / address bus |
| Broche 36 | PC1 — Port C bit 1 / address bus |
| Broche 37 | PC0 — Port C bit 0 / address bus |
| Broche 38 | PD7 — Port D bit 7 / data bus |
| Broche 39 | PD6 — Port D bit 6 / data bus |
| Broche 40 | PD5 — Port D bit 5 / data bus |
| Broche 41 | PD4 — Port D bit 4 / data bus |
| Broche 42 | PD3 — Port D bit 3 / data bus |
| Broche 43 | PD2 — Port D bit 2 / data bus |
| Broche 44 | PD1 — Port D bit 1 / data bus |
| Broche 45 | PD0 — Port D bit 0 / data bus |
| Broche 46 | PB7 — Port B bit 7 / general I/O |
| Broche 47 | PB6 — Port B bit 6 / general I/O |
| Broche 48 | PB5 — Port B bit 5 / general I/O |
| Broche 49 | PB4 — Port B bit 4 / general I/O |
| Broche 50 | PB3 — Port B bit 3 / general I/O |
| Broche 51 | PB2 — Port B bit 2 / general I/O |
| Broche 52 | PB1 — Port B bit 1 / general I/O |
| Broche 53 | PB0 — Port B bit 0 / general I/O |
| Broche 54 | PH7 — Port H bit 7 / SPI / SCI control |
| Broche 55 | PH6 — Port H bit 6 / SPI / SCI control |
| Broche 56 | PH5 — Port H bit 5 / SPI / SCI control |
| Broche 57 | PH4 — Port H bit 4 / SPI / SCI control |
| Broche 58 | PH3 — Port H bit 3 / SPI / SCI control |
| Broche 59 | PH2 — Port H bit 2 / SPI / SCI control |
| Broche 60 | PH1 — Port H bit 1 / SPI / SCI control |
| Broche 61 | PH0 — Port H bit 0 / SPI / SCI control |
| Broche 62 | PF7 — Port F bit 7 / expanded bus control |
| Broche 63 | PF6 — Port F bit 6 / expanded bus control |
| Broche 64 | PF5 — Port F bit 5 / expanded bus control |
| Broche 65 | PF4 — Port F bit 4 / expanded bus control |
| Broche 66 | PF3 — Port F bit 3 / expanded bus control |
| Broche 67 | PF2 — Port F bit 2 / expanded bus control |
| Broche 68 | RESET — Bidirectional reset (active-low open-drain) |
Applications typiques
MC68L11F1CFNE3 convient pour 6 applications: Automotive Body and Chassis Controllers, Industrial Automation and Sensor Interfacing, Legacy Embedded Control Board Maintenance, Instrumentation Front-End and Metering, Consumer Appliance Control Boards, Automotive ECU Accessories and Aftermarket Modules.
Automotive Body and Chassis Controllers
The MC68L11F1CFNE3 fits automotive body and chassis controllers because of its mature HC11 instruction set, 3.3 V/5 V supply tolerance, and 1 KB SRAM / 512-byte EEPROM split well matched to small actuator and sensor interfaces. In typical body-controller designs it runs at 3 MHz handling PWM, timer capture, and SCI communication to other ECUs. Compared with newer Cortex-M MCUs it consumes more code space per function, but pin compatibility with legacy automotive boards keeps it in service fleets. The 68-PLCC chassis also tolerates the under-hood thermal environment when properly socketed.
Recommandé
Industrial Automation and Sensor Interfacing
In industrial sensor hubs the MC68L11F1CFNE3's nonmultiplexed expanded bus lets the designer pair it with external program memory while keeping deterministic 8-bit GPIO timing for sensor reads. Its fully static CMOS core supports DC clock-stop modes ideal for slow-update remote sensors that wake periodically. The 512-byte EEPROM stores calibration coefficients that survive power-cycle events critical for instrumentation front-ends. Compared with 32-bit Cortex-M parts, it tolerates 5 V noise transients and supplies a familiar M68HC11 toolchain to maintain long-life industrial lines.
Recommandé
Legacy Embedded Control Board Maintenance
The MC68L11F1CFNE3 is most often specified today to repair or extend the life of legacy embedded boards whose original 68HC11 design cannot be re-spinned. Its 68-PLCC package drops into existing PLCC sockets and reuses the original HC11 firmware toolchain, avoiding the cost of full board redesign. The 3.3 V/5 V supply tolerance allows direct swap with 5 V HC11F1 stock parts where modernization is constrained. Verified at the current date, factory-traceable inventory is still available through authorized distributors, supporting multi-year maintenance contracts on industrial and military legacy systems.
Recommandé
Instrumentation Front-End and Metering
The HC11 CISC core paired with 512 bytes of on-chip EEPROM and 1 KB of SRAM is well suited to instrumentation front-ends such as utility meters and process instrumentation that store calibration constants in EEPROM. The 3 MHz bus is fast enough to multiplex ADC reads and run a small display driver while leaving time for SCI/SPI communication. The fully static design lets the MCU enter stop modes between sensor acquisitions, extending battery life on remote metering nodes. Industrial metering users often choose this part because its 5 V tolerance avoids level shifters on analog front ends.
Recommandé
Consumer Appliance Control Boards
White-goods and small appliance control boards use the MC68L11F1CFNE3 for its straightforward 8-bit MCU plus 512-byte EEPROM firmware-parameter storage plus 1 KB SRAM model-state plus ROMless external program interface. The 68-PLCC package drops into PLCC sockets already designed into mature appliance platforms to minimize tooling change. Compared with newer Cortex-M0 parts, it has lower peak performance but lower BOM cost on legacy lines and a fully understood toolchain. Its 3.3 V/5 V dual voltage lets it work directly with both modern and legacy 5 V analog driver ASICs.
Recommandé
Automotive ECU Accessories and Aftermarket Modules
Aftermarket automotive accessories such as alarm systems, remote-start modules, and OBD-II dongles historically paired with an M68HC11F1 MCU because of its 5 V tolerance, EEPROM parameter storage, and small firmware footprint. The MC68L11F1CFNE3 preserves the same peripheral set while allowing 3.3 V system rails for newer peripherals. The 3 MHz bus speed is sufficient for UART/SPI/CAN bit-banging in CANcapable accessories without an external transceiver MCU. Verified at the current date, distributors still stock this part for the long-tail automotive aftermarket.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68L11F1CFNE3 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC68HC11F1CFNE3 | MC68HC11F1CFNE2 | MCHC11F1CFNE3 | MC68HC11E0CFNE3 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 68-PLCC (24.21 x 24.21 mm) | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same |
| Core | HC11 (8-bit CISC) | HC11 (8-bit CISC) | HC11 (8-bit CISC) | HC11 (8-bit CISC) | |
| Maximum Clock | 3 MHz | 3 MHz | 3 MHz | 3 MHz | |
| Supply Voltage | 3.3 V / 5 V dual | 5 V only | 3.3 V / 5 V dual | 5 V only | |
| RAM Size | 1 KB | 1 KB | 1 KB | 512 bytes | |
| Program Memory | ROMless (external bus) | ROMless (external bus) | ROMless (external bus) | ROMless (external bus) | |
| Tape & Reel Code | E3 | E3 | E2 | E3 (R-suffix variant) | |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- Dual 3.3 V/5 V supply support from NXP 'L'-grade silicon (vs MC68HC11F1CFNE3)
- Larger on-chip RAM than HC11E0 footprint-compatible parts (vs MC68HC11E0CFNE3)
- Internal 512-byte EEPROM for non-volatile configuration storage (vs MCHC11F1CFNE3)
Notes de conception
The MC68L11F1CFNE3 requires clean +5 V (or +3.3 V on 'L' silicon) on VDD and VDDR with the VDDR pin typically powering the A/D subsystem separately. Recommended: place a 0.1 uF ceramic decoupling capacitor as close as possible to VDD/VSS and a bulk 10 uF tantalum or ceramic on the same supply rail. The A/D references VRL and VRH must be tied to clean analog ground and VDDR (or driven by a low-noise reference) to avoid ADC noise injection. Per the M68HC11 family design guidelines, ramp VDD monotonically within the datasheet-specified rise time so the internal POR/reset logic initializes correctly.
The nonmultiplexed expanded bus on the MC68L11F1CFNE3 exposes parallel address and data lines on ports C, D, G, and control lines on port F. Keep trace lengths matched within bus groups and series-terminate address outputs driving external memory when the bus exceeds approximately 50 pF total load. Place external program memory as close as possible to the MCU to minimize propagation delay; the 3 MHz CPU gives roughly 333 ns per bus cycle and excessive access skew can corrupt opcode reads. If RMW (read-modify-write) operations to external peripherals are used, ensure bus hold time is met by the external device.
Avoid driving the bidirectional RESET pin with anything other than an open-drain driver and an external supervisor; the line is open-drain on the F1 family and a totem-pole driver can damage the pin. Do not leave the MODA and MODB mode-select pins floating at boot - they select single-chip, expanded, or special-test modes and must be in a defined state before reset goes high. The CONFIG register must be programmed in special modes; once committed to expanded mode you cannot re-enter single-chip boot mode without an external mode-entry tool.
The 68-PLCC package is socket-compatible and tolerant of legacy through-hole-replacement footprints, but still requires a thermal and power copper pour on the inner PCB layers under the carrier for VDD/VSS distribution. Keep the A/D section (PE7-PE0, VRL, VRH, VDDR) physically separated from the digital switching traces on ports C/D/G. Because the part is now obsolete (No Longer Manufactured per NXP), procurement should obtain factory-traceable stock and avoid parts without lot date code and traceability documentation. For new designs, consider modern Kinetis or S08 replacements with the same 5 V tolerance.
Informations de conformité
Lifecycle 'No Longer Manufactured' as of verified NXP product page; RoHS/lead-free/halogen status not explicitly disclosed in the verified distributor snippets - set to 'unknown' rather than inferred. AEC-Q100 marked not_applicable because the part is industrial/consumer-grade silicon in the M68HC11 family rather than automotive-qualified - verified at the current date.
