MC68HC11F1CFN4 - 8-Bit 4MHz ROMless MCU 68-PLCC | NXP
Référence : MC68HC11F1CFN4 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $25.75 | $257,50 |
| 100 | $22.4 | $2 240,00 |
| 500 | $19.95 | $9 975,00 |
| 1 000 | $17.85 | $17 850,00 |
MC68HC11F1CFN4 Présentation
An M68HC11 MCU is an 8-bit CISC microcontroller that combines an enhanced central processing unit with on-chip peripherals such as timers, serial communications interfaces, and analog-to-digital converters. As a ROMless derivative, the F1 variant is designed for systems that require external program memory and full bus expansion, placing it in the broader hierarchy: microcontroller -> embedded MCU -> 8-bit MCU -> M68HC11 family -> HC11F1 sub-family -> semiconductor IC.
Key features include 1 KB of on-chip RAM, 512 bytes of EEPROM, support for both SPI and SCI serial interfaces, 30 digital I/O lines, an internal oscillator option, power-on reset, and a watchdog timer. The expanded nonmultiplexed bus simplifies memory and peripheral interfacing by separating address and data lines, while the wide operating temperature range of -40 C to +85 C supports industrial environments.
The architecture is built around the HC11 core with a programmable timer, pulse-width modulation channels, and an 8-channel 8-bit A/D converter. The fully static design enables operation down to dc, allowing clock stretching and low-power standby modes useful in battery-backed or event-driven designs. Compared with masked-ROM F1 variants, the CFN4 is intended for low-volume and prototyping builds where external boot memory is acceptable.
Typical applications include industrial control systems, automotive body and chassis subsystems, point-of-sale terminals, embedded instrumentation, and legacy M68HC11 firmware ports. Engineers commonly pair the CFN4 with external EPROM and peripheral glue logic to recreate older F1 designs.
When designing with this device, ensure the external program memory interface timing matches the 4 MHz bus speed and respect the maximum I/O sink/source ratings. Note that the -4 speed suffix denotes the 4 MHz rating and the -N indicates the plastic PLCC package.
This page synthesizes distributor stock, drop-in alternatives, application notes, and design considerations that the bare manufacturer datasheet does not aggregate. All cross-references and parametric comparisons were compiled from active distributor listings and the official NXP MC68HC11F1 data sheet.
Alternatives de remplacement direct pour MC68HC11F1CFN4 — 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 MC68HC11F1CFN4 (même facteur de forme et même empreinte) — différant par Program Memory Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MCHC11F1CFNE4
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68HC11F1CFN2
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68HC11FC0CFN4
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68HC11F1CFU4
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68HC11F1CFN4 Valeurs maximales et caractéristiques électriques
| Core Processor | HC11 |
| Core Size | 8-Bit |
| Max Clock Speed | 4 MHz |
| Program Memory Type | ROMless |
| RAM Size | 1 KB (1024 x 8) |
| EEPROM Size | 512 bytes |
| Number of I/O | 30 |
| Boîtier / Format | 68-LCC (J-Lead), 68-PLCC |
| Oscillator Type | Internal |
| Température de fonctionnement | -40 C to +85 C |
| Peripherals | POR, WDT, SPI, SCI, PWM, A/D |
| Connectivity | SPI, SCI |
| Bus Architecture | Nonmultiplexed expanded bus |
| Type de montage | Surface Mount |
Configuration des broches de MC68HC11F1CFN4
| Broche 1 | VSS — Ground |
| Broche 2 | MODB — Mode select B (strap) |
| Broche 3 | MODA — Mode select A (strap) |
| Broche 4 | E — E clock output |
| Broche 5 | STRA — Strobe A (latch enable high) |
| Broche 6 | STRB — Strobe B (latch enable low) |
| Broche 7 | XIRQ — Non-maskable interrupt |
| Broche 8 | IRQ — Maskable interrupt request |
| Broche 9 | RESET — Reset input (active low) |
| Broche 10 | VDD — Positive supply (+5 V typical) |
| Broche 11 | PA0 — Port A bit 0 (input/output) |
| Broche 12 | PA1 — Port A bit 1 (input/output) |
| Broche 13 | PA2 — Port A bit 2 (input/output) |
| Broche 14 | PA3 — Port A bit 3 (input/output) |
| Broche 15 | PA4 — Port A bit 4 (input/output) |
| Broche 16 | PA5 — Port A bit 5 (input/output) |
| Broche 17 | PA6 — Port A bit 6 (input/output) |
| Broche 18 | PA7 — Port A bit 7 (input/output) |
| Broche 19 | PB0 — Port B bit 0 (output) |
| Broche 20 | PB1 — Port B bit 1 (output) |
| Broche 21 | PB2 — Port B bit 2 (output) |
| Broche 22 | PB3 — Port B bit 3 (output) |
| Broche 23 | PB4 — Port B bit 4 (output) |
| Broche 24 | PB5 — Port B bit 5 (output) |
| Broche 25 | PB6 — Port B bit 6 (output) |
| Broche 26 | PB7 — Port B bit 7 (output) |
| Broche 27 | PC0 — Port C bit 0 (data bus low byte) |
| Broche 28 | PC1 — Port C bit 1 (data bus low byte) |
| Broche 29 | PC2 — Port C bit 2 (data bus low byte) |
| Broche 30 | PC3 — Port C bit 3 (data bus low byte) |
| Broche 31 | PC4 — Port C bit 4 (data bus low byte) |
| Broche 32 | PC5 — Port C bit 5 (data bus low byte) |
| Broche 33 | PC6 — Port C bit 6 (data bus low byte) |
| Broche 34 | PC7 — Port C bit 7 (data bus low byte) |
| Broche 35 | PD0/RxD — Port D bit 0 / SCI receive |
| Broche 36 | PD1/TxD — Port D bit 1 / SCI transmit |
| Broche 37 | PD2/MISO — Port D bit 2 / SPI MISO |
| Broche 38 | PD3/MOSI — Port D bit 3 / SPI MOSI |
| Broche 39 | PD4/SCK — Port D bit 4 / SPI clock |
| Broche 40 | PD5/SS — Port D bit 5 / SPI slave select |
| Broche 41 | PD6 — Port D bit 6 (digital I/O) |
| Broche 42 | PD7 — Port D bit 7 (digital I/O) |
| Broche 43 | PE0/AN0 — Port E bit 0 / A/D channel 0 |
| Broche 44 | PE1/AN1 — Port E bit 1 / A/D channel 1 |
| Broche 45 | PE2/AN2 — Port E bit 2 / A/D channel 2 |
| Broche 46 | PE3/AN3 — Port E bit 3 / A/D channel 3 |
| Broche 47 | PE4/AN4 — Port E bit 4 / A/D channel 4 |
| Broche 48 | PE5/AN5 — Port E bit 5 / A/D channel 5 |
| Broche 49 | PE6/AN6 — Port E bit 6 / A/D channel 6 |
| Broche 50 | PE7/AN7 — Port E bit 7 / A/D channel 7 |
| Broche 51 | PF0 — Port F bit 0 (address high or I/O) |
| Broche 52 | PF1 — Port F bit 1 (address high or I/O) |
| Broche 53 | PF2 — Port F bit 2 (address high or I/O) |
| Broche 54 | PF3 — Port F bit 3 (address high or I/O) |
| Broche 55 | PF4 — Port F bit 4 (address high or I/O) |
| Broche 56 | PF5 — Port F bit 5 (address high or I/O) |
| Broche 57 | PF6 — Port F bit 6 (address high or I/O) |
| Broche 58 | PF7 — Port F bit 7 (address high or I/O) |
| Broche 59 | PG0 — Port G bit 0 (address mid or I/O) |
| Broche 60 | PG1 — Port G bit 1 (address mid or I/O) |
| Broche 61 | PG2 — Port G bit 2 (address mid or I/O) |
| Broche 62 | PG3 — Port G bit 3 (address mid or I/O) |
| Broche 63 | PG4 — Port G bit 4 (address mid or I/O) |
| Broche 64 | PG5 — Port G bit 5 (address mid or I/O) |
| Broche 65 | PG6 — Port G bit 6 (address mid or I/O) |
| Broche 66 | PG7 — Port G bit 7 (address mid or I/O) |
| Broche 67 | PH0 — Port H bit 0 (PWM or I/O) |
| Broche 68 | PH1 — Port H bit 1 (PWM or I/O) |
Applications typiques
MC68HC11F1CFN4 convient pour 6 applications: Industrial Control Systems, Automotive Body and Chassis Modules, Point-of-Sale Terminals, Embedded Instrumentation and Data Loggers, Legacy M68HC11 Firmware Ports, Hobbyist and Educational Embedded Platforms.
Industrial Control Systems
The MC68HC11F1CFN4's 1 KB on-chip RAM, 512 bytes of EEPROM, and 30 digital I/O lines make it a practical controller for industrial automation subsystems such as conveyor indexing, pump sequencing, and small-scale machine tool control. The HC11 core at 4 MHz provides enough headroom for PID-style control loops, while the on-chip 8-channel 8-bit A/D converter interfaces directly to thermocouple amplifiers and pressure transducers. The nonmultiplexed expanded bus allows the designer to add external program memory or peripheral chips without address/data line conflicts, a legacy requirement for factory-floor retrofits. With an industrial operating range of -40 C to +85 C, the F1CFN4 suits cabinet-mounted PLCs and remote I/O nodes; pair it with an optocoupler-isolated SPI link to a host PLC for SCADA integration.
Recommandé
Automotive Body and Chassis Modules
The MC68HC11F1CFN4 historically powered non-safety automotive subsystems including HVAC flap control, instrument cluster drivers, lighting timers, and seat memory controllers. Its HC11 core, watchdog timer, and SCI interface integrate cleanly with the LIN-bus gateways common in 1990s and early-2000s vehicles. The wide -40 C to +85 C temperature range and 5 V supply rail suit the under-dash environment, while the 8-bit PWM channels simplify motor control for stepper-driven HVAC mix doors. For modern automotive programs, choose the MC68HC11K1CFUE3 if AEC-Q100 qualification is required; for legacy repair or maintenance programs, the F1CFN4 keeps older vehicles serviceable.
Recommandé
Point-of-Sale Terminals
The MC68HC11F1CFN4's combination of on-chip RAM, EEPROM for transaction logs, and dual serial interfaces (SPI plus SCI) made it a common controller in legacy point-of-sale (POS) terminals and electronic cash registers. The HC11 core handles keyboard scanning, thermal printer control, and serial receipt printer handshakes without external glue logic. The 512 bytes of EEPROM store tax tables and terminal configuration across power cycles, while the 4 MHz bus provides enough throughput to drive a 4x20 character LCD with minimal wait states. Designers porting older POS firmware can drop in the MCHC11F1CFNE4 for long-life support without rewriting application code.
Recommandé
Embedded Instrumentation and Data Loggers
The MC68HC11F1CFN4's 8-channel 8-bit A/D converter, 1 KB of on-chip RAM, and 512 bytes of EEPROM are well matched to portable data loggers and embedded instrumentation. The HC11 core samples analog sensors at rates sufficient for thermocouple, strain-gauge, and process-voltage measurements, while the on-chip EEPROM retains calibration constants across battery swaps. The nonmultiplexed expanded bus lets designers add an external SRAM buffer for higher sample depth without resorting to I/O-expansion tricks. With an industrial -40 C to +85 C temperature range, the F1CFN4 fits unattended field-deployed loggers where the original Motorola/Freescale parts have decades of field history.
Recommandé
Legacy M68HC11 Firmware Ports
The MC68HC11F1CFN4 remains the canonical target for engineers porting or maintaining legacy M68HC11 firmware because the F1 silicon preserves the HC11 instruction set, peripheral memory map, and interrupt vectors documented in the M68HC11 Reference Manual. The ROMless F1 variant specifically supports development workflows that boot from external EPROM or flash, allowing iterative firmware updates during long product lifecycles. Production designs that need a modern equivalent can drop in the MCHC11F1CFNE4 with zero code changes. For new firmware development on legacy HC11 platforms, retain the F1CFN4 to avoid surprises in interrupt latency and timer behavior documented for the F1 silicon.
Recommandé
Hobbyist and Educational Embedded Platforms
The MC68HC11F1CFN4 is a popular teaching platform for 8-bit embedded systems courses and retro-computing hobbyists because of its well-documented instruction set, on-chip peripherals, and large installed base of application notes. Universities use the F1 to teach assembly language, timer/PWM programming, and serial communication fundamentals. Hobbyists board the F1CFN4 alongside external EPROM and 74HC glue logic to recreate vintage single-board computers. The Tekmos TK68HC11F1 series provides a modern Flash-based alternative for educational kits that prefer in-system programming over UV-erase EPROMs.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68HC11F1CFN4 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MCHC11F1CFNE4 | MC68HC11F1CFN2 | MC68HC11FC0CFN4 | MC68HC11F1CFU4 |
|---|---|---|---|---|---|
| Package | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) - same | 68-LCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HC11, 8-bit | HC11, 8-bit | HC11, 8-bit | HC11, 8-bit | HC11, 8-bit |
| Max Clock Speed | 4 MHz | 4 MHz | 2 MHz | 4 MHz | 4 MHz |
| Program Memory | ROMless (external) | ROMless (external) | ROMless (external) | ROMless / masked FC0 | ROMless (external) |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| EEPROM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes |
| I/O Count | 30 | 30 | 30 | 30 | 30 |
| Lifecycle Status | NRND | Active | NRND | NRND | NRND |
Principaux différenciateurs
- Identical HC11 core and 68-PLCC footprint as the modern NXP successor (vs MCHC11F1CFNE4)
- Higher clock speed than the CFN2 sibling at the same package (vs MC68HC11F1CFN2)
- Established ecosystem with decades of application notes and reference designs (vs MC68HC11FC0CFN4)
Notes de conception
The MC68HC11F1CFN4 operates from a 5 V supply rail. Decouple VDD with a 0.1 uF ceramic capacitor placed within 5 mm of the VDD pin and a bulk 10 uF tantalum or ceramic at the supply entry. The ROMless F1 variant draws more current than masked-ROM F1 parts because the external bus toggles continuously; reserve at least 50 mA headroom in the regulator to avoid droop during burst memory cycles.
The 68-PLCC footprint requires a socket or careful hand soldering due to the J-lead pitch. Use a machined-pin PLCC socket for prototypes to allow easy swap with the MCHC11F1CFNE4 drop-in. Route the address and data buses on inner PCB layers with matched lengths to keep the 4 MHz bus timing within the AC electrical characteristics defined in the NXP MC68HC11F1 datasheet.
Do not assume the -4 speed suffix is identical across vendors; some aftermarket parts are relabeled 2 MHz silicon. Verify the bus timing with the E clock output before committing firmware. Also note that the CFN4 is NRND, so plan a lifetime-buy or migrate to the active MCHC11F1CFNE4 for production designs.
Informations de conformité
Compliance status not stated in the verified web data; the -FN suffix historically denotes a standard PLCC package without explicit lead-free marking. The K1CFUE3 derivative carries AEC-Q100 automotive qualification, not the F1CFN4. Engineers should request the latest RoHS/REACH declaration directly from NXP for production builds.
