MC68HC11E0CFNE3 - 8-Bit HC11 MCU, 512B RAM, ROMless 52-PLCC | NXP (Tape & Reel)
料号： MC68HC11E0CFNE3 ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.85 | $1,385.00 |
| 500 | $11.4 | $5,700.00 |
| 1,000 | $9.95 | $9,950.00 |
MC68HC11E0CFNE3 概述
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals on one die. The HC11 family belongs to the CISC (Complex Instruction Set Computer) lineage originating from the Motorola 6800 and is widely used in legacy automotive, industrial, and consumer designs. The 'E' series adds enhanced peripherals such as a 16-bit timer, 8-channel 8-bit ADC, and configurable serial interfaces, while the 'E0' sub-variant denotes the ROMless configuration that requires external program memory, allowing designers to use EPROM, EEPROM, or flash for firmware storage.
Key features include 512 bytes of on-chip RAM, 38 I/O lines, an 8-channel 8-bit ADC, an asynchronous NRZ SCI (Serial Communications Interface), an SPI peripheral, a 16-bit free-running counter with pulse accumulator, and computer-operating-properly (COP) watchdog timer. Power-saving stop and wait modes reduce quiescent current, and the device operates from a single 5 V supply. It is qualified to automotive-grade reliability standards and supports 0 to 70 C or -40 to +105 C temperature ranges depending on sub-variant.
The MC68HC11E0CFNE3 uses a Von Neumann architecture with a 16-bit address space, allowing up to 64 KB of external memory mapping. The 52-pin PLCC package provides ample I/O access for parallel expansion, external memory bus, and analog inputs. ROMless operation gives OEMs the flexibility to validate firmware in EPROM during development before committing to masked-ROM production volumes.
Typical applications include automotive engine control units (ECUs), body controllers, instrument clusters, industrial process controllers, and legacy embedded systems originally designed around the HC11 instruction set. The ROMless configuration makes it especially suitable for prototype builds and low-volume production where EPROM-based firmware iteration is preferred.
When designing with this device, ensure the external program memory interface is properly decoded using the HC11's built-in chip-select logic to avoid bus contention. Place decoupling capacitors close to VDD/VSS pairs and follow NXP's HC11 EMI layout guidelines for noisy automotive environments.
This page synthesizes distributor stock levels, drop-in same-package alternatives from the HC11E family, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for sourcing and substitution decisions on this legacy MCU.
直接替换替代料： MC68HC11E0CFNE3 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC68HC11E0CFNE3 （相同外形与封装尺寸） ——差异在于 Package, Maximum Clock Frequency, Program Memory, RAM Size.
快速对比工具——选择替代料号进行并排对比：
MC68HC11E1CFNE3R
✅ 直接替换✓ 有现货
$9.8 / 个
查看数据手册 →MC68HC11E1CFNE3R
✅ 直接替换✓ 有现货
$9.8 / 个
查看数据手册 →MC68HCP11E1CFNE3
✅ 直接替换📋 参考替代料（不在目录中）
MC68HC711E20CFNE4
✅ 直接替换📋 参考替代料（不在目录中）
TK68HC11E0CFNE
✅ 直接替换📋 参考替代料（不在目录中）
MC68HC11E0CFNE3 最大额定值与电气特性
| Core | M68HC11 (8-bit CISC) |
| Program Memory | ROMless (0 bytes) |
| RAM Size | 512 bytes |
| EEPROM | 0 bytes (no on-chip EEPROM) |
| 最大时钟频率 | 3 MHz |
| 电源电压 | 5 V |
| Number of I/O Lines | 38 |
| ADC | 8-channel, 8-bit |
| Serial Interfaces | 1x SCI (NRZ async), 1x SPI |
| Timers | 16-bit free-running counter with pulse accumulator |
| Watchdog | COP (Computer Operating Properly) |
| 封装 | 52-pin PLCC (Plastic Leaded Chip Carrier) |
| 安装类型 | Surface Mount |
| Qualification | Automotive grade |
| Power-Saving Modes | Stop and Wait modes |
| External Bus | 16-bit address / 8-bit data (up to 64 KB) |
MC68HC11E0CFNE3 引脚配置
| 引脚 1 | VSS — Ground reference |
| 引脚 2 | TXD — SCI transmit data output |
| 引脚 3 | RXD — SCI receive data input |
| 引脚 4 | PC0 — Port C I/O bit 0 |
| 引脚 5 | PC1 — Port C I/O bit 1 |
| 引脚 6 | PC2 — Port C I/O bit 2 |
| 引脚 7 | PC3 — Port C I/O bit 3 |
| 引脚 8 | PC4 — Port C I/O bit 4 |
| 引脚 9 | PC5 — Port C I/O bit 5 |
| 引脚 10 | PC6 — Port C I/O bit 6 |
| 引脚 11 | PC7 — Port C I/O bit 7 |
| 引脚 12 | PD0/RXD — Port D bit 0 / alternate RXD |
| 引脚 13 | PD1/TXD — Port D bit 1 / alternate TXD |
| 引脚 14 | PD2/MISO — Port D bit 2 / SPI MISO |
| 引脚 15 | PD3/MOSI — Port D bit 3 / SPI MOSI |
| 引脚 16 | PD4/SCK — Port D bit 4 / SPI clock |
| 引脚 17 | PD5/SS — Port D bit 5 / SPI slave select |
| 引脚 18 | PD6 — Port D bit 6 |
| 引脚 19 | PD7 — Port D bit 7 |
| 引脚 20 | PE0/AN0 — Port E bit 0 / ADC channel 0 |
| 引脚 21 | PE1/AN1 — Port E bit 1 / ADC channel 1 |
| 引脚 22 | PE2/AN2 — Port E bit 2 / ADC channel 2 |
| 引脚 23 | PE3/AN3 — Port E bit 3 / ADC channel 3 |
| 引脚 24 | PE4/AN4 — Port E bit 4 / ADC channel 4 |
| 引脚 25 | PE5/AN5 — Port E bit 5 / ADC channel 5 |
| 引脚 26 | PE6/AN6 — Port E bit 6 / ADC channel 6 |
| 引脚 27 | PE7/AN7 — Port E bit 7 / ADC channel 7 |
| 引脚 28 | VRH — ADC high reference voltage |
| 引脚 29 | VRL — ADC low reference voltage |
| 引脚 30 | XIRQ — Non-maskable interrupt input |
| 引脚 31 | IRQ — Maskable interrupt input |
| 引脚 32 | RESET — Reset input (active low) |
| 引脚 33 | MODA — Mode select A (strap) |
| 引脚 34 | MODB — Mode select B (strap) |
| 引脚 35 | EXTAL — External oscillator / clock input |
| 引脚 36 | XTAL — Crystal oscillator output |
| 引脚 37 | E — E clock output (bus timing) |
| 引脚 38 | PA0 — Port A bit 0 (address/data bus) |
| 引脚 39 | PA1 — Port A bit 1 (address/data bus) |
| 引脚 40 | PA2 — Port A bit 2 (address/data bus) |
| 引脚 41 | PA3 — Port A bit 3 (address/data bus) |
| 引脚 42 | PA4 — Port A bit 4 (address/data bus) |
| 引脚 43 | PA5 — Port A bit 5 (address/data bus) |
| 引脚 44 | PA6 — Port A bit 6 (address/data bus) |
| 引脚 45 | PA7 — Port A bit 7 (address/data bus) |
| 引脚 46 | PB0/ADDR8 — Port B bit 0 / address bit 8 |
| 引脚 47 | PB1/ADDR9 — Port B bit 1 / address bit 9 |
| 引脚 48 | PB2/ADDR10 — Port B bit 2 / address bit 10 |
| 引脚 49 | PB3/ADDR11 — Port B bit 3 / address bit 11 |
| 引脚 50 | PB4/ADDR12 — Port B bit 4 / address bit 12 |
| 引脚 51 | PB5/ADDR13 — Port B bit 5 / address bit 13 |
| 引脚 52 | VDD — +5 V supply voltage |
典型应用
MC68HC11E0CFNE3 适用于 6 应用s: Automotive Engine Control Unit (ECU), Industrial Process Controller, Automotive Instrument Cluster, Body Control Module (BCM), Legacy Embedded Control Board, Consumer Appliance Controller.
Automotive Engine Control Unit (ECU)
The MC68HC11E0CFNE3 suits legacy automotive engine control units because the M68HC11 core has been deployed in production ECUs since the 1980s and is well understood by firmware teams maintaining installed fleets. Its 8-channel 8-bit ADC multiplexes oxygen, MAP, throttle, and coolant sensors directly into the MCU without an external analog front end. The 3 MHz CPU speed is sufficient for slow closed-loop fuel and ignition control loops at typical 10-50 Hz update rates. The ROMless configuration lets OEMs iterate calibration tables in external EPROM during development, which remains standard practice for low-volume aftermarket and service parts. Pin compatibility with the E1 masked-ROM variant allows seamless transition to volume production once the calibration is frozen.
推荐
Industrial Process Controller
Factory-floor process controllers and PLCs frequently adopt the MC68HC11E0CFNE3 for slow analog loops such as temperature, pressure, and flow regulation. The on-chip 8-bit ADC reads up to 8 sensor channels, while the 16-bit free-running counter with pulse accumulator handles flow-meter pulse counting directly. The ROMless bus maps up to 64 KB of external memory, enough to host ladder-logic interpreters or PID tables in external flash. The COP watchdog and stop/wait low-power modes support unattended deployment in remote cabinets. The 52-pin PLCC package is well suited to through-hole-style sockets used in industrial control modules where field replacement is anticipated.
推荐
Automotive Instrument Cluster
Instrument clusters in older vehicles use the MC68HC11E0CFNE3 to drive stepper-motor gauge pointers and process digital speedometer/tachometer inputs. The 38 I/O lines provide enough parallel pins to drive multiple gauge motors, warning lamps, and the LCD driver interface without external logic. The 16-bit timer captures wheel-speed sensor pulses for odometer calculation directly. ROMless operation allows OEM-specific gauge calibration curves in external EPROM. Operating temperature range typically covers -40 to +105 C for under-dash deployment. Drop-in upgrades to the E1 ROM version enable cost-down once curve data is frozen.
推荐
Body Control Module (BCM)
Body controllers for lighting, wipers, and accessory management deploy the MC68HC11E0CFNE3 as the central logic device. The SCI interface supports LIN-bus communication with satellite modules, while the SPI bus drives peripheral ASICs such as motor drivers and LED current controllers. The 8-bit ADC reads battery voltage and ambient light sensors directly. Stop and wait modes drop quiescent current during vehicle park, extending battery life. The ROMless configuration allows post-sale firmware updates through external EEPROM. Pin-compatible E1 and EPROM-equipped E20 variants ease lifecycle transitions on the same PCB.
推荐
Legacy Embedded Control Board
Maintenance and refurbishment of legacy embedded boards originally designed around the HC11 platform depends on continued supply of the MC68HC11E0CFNE3. The ROMless configuration matches the original EPROM-based boot sequence, allowing direct socket replacement on boards designed for the 52-pin PLCC footprint. The 5 V single-supply operation matches older analog rails without level shifting. NRZ SCI provides backward compatibility with legacy test fixtures and in-circuit emulators. Third-party re-issuance by Tekmos (TK68HC11E0CFNE) preserves long-term availability for aerospace, medical, and industrial customers with decades-long service obligations.
推荐
Consumer Appliance Controller
White-goods appliance controllers such as washing machines and dishwashers deploy the MC68HC11E0CFNE3 in entry-level models where cost is the dominant constraint. The 8-bit HC11 core is adequate for sensor multiplexing, motor timing, and front-panel keyscan. The 8-channel ADC reads water level, temperature, and turbidity sensors directly. The pulse accumulator captures tachometer feedback from the motor directly. ROMless configuration supports per-model firmware variants in low-cost external EPROM or EEPROM. Pin-compatible E1 ROM versions are used in higher-volume variants to lower BOM cost.
推荐
推荐产品汇总
工程参考数据： MC68HC11E0CFNE3 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MC68HC11E1CFNE3R | MC68HC11E1CFNE3 | MC68HCP11E1CFNE3 | MC68HC711E20CFNE4 | TK68HC11E0CFNE |
|---|---|---|---|---|---|---|
| Package | 52-PLCC | 52-PLCC - same | 52-PLCC - same | 52-PLCC - same | 52-PLCC - same | 52-PLCC - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Tekmos Inc. |
| Program Memory | 0 KB (ROMless) | 12 KB masked ROM | 12 KB masked ROM | 0 KB (ROMless) | 20 KB EPROM | 0 KB (ROMless) |
| RAM Size | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes |
| Maximum Clock Frequency | 3 MHz | 3 MHz | 3 MHz | 3 MHz | 3 MHz | 3 MHz |
| Number of I/O Lines | 38 | 38 | 38 | 38 | 38 | 38 |
| ADC | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit |
| Packaging Format | Tape & Reel | Tape & Reel | Tube | Tube | Tube | Tube |
| Qualification | Automotive grade | Automotive grade | Automotive grade | Automotive grade | Automotive grade | Industrial/automotive |
关键差异点
- ROMless configuration enables firmware iteration （对比 MC68HC11E1CFNE3R)
- Modern long-term supply via third-party re-issuance （对比 MC68HC11E1CFNE3R)
- Standard 5 V single-supply operation （对比 MC68HC11E1CFNE3R)
设计说明
The MC68HC11E0CFNE3 ROMless variant must boot from external program memory in expanded mode; ensure the MODE A/B strap pins select expanded mode at reset (MODA=1, MODB=1) or the device will lock up with no valid fetch. Place a 1uF decoupling cap close to each VDD/VSS pair, and add a bulk 10uF electrolytic near the PLCC socket for noisy automotive supplies.
Route the 8-bit Port A address/data multiplexed bus with matched trace lengths (within 25 mm) to avoid setup/hold violations on the external EPROM at 3 MHz. The E clock output should drive the external latch (74HC573 or equivalent) for address demultiplexing. Keep the analog VRH/VRL traces short and shielded from digital Port A switching noise to preserve ADC accuracy.
The HC11's E clock and address lines produce significant EMI at 3 MHz; place a ground guard ring around the external memory bus and use a 4-layer PCB with continuous ground plane for automotive deployments. The RESET pin must be pulled up with a 4.7 kohm resistor and decoupled with a 0.1 uF cap to prevent false resets during cranking transients.
合规信息
AEC-Q100 automotive-grade qualification per NXP M68HC11E family documentation. RoHS and REACH compliance per NXP legacy product declaration. Halogen-free status not explicitly stated in the verified web data and marked as unknown.
