MC68HC11E1CFNE3R - 8-Bit 3MHz MCU 512B EE ROMless PLCC-52 | NXP
MPN: MC68HC11E1CFNE3R ⚠ آخری بار خریداریMC68HC11E1CFNE3R جائزہ
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and programmable peripherals on one die. The 68HC11 architecture is a classic 8-bit CISC accumulator-based design originally introduced by Motorola and now maintained by NXP. The HC11E sub-family extends the base M68HC11 CPU with on-chip EEPROM, more RAM, expanded timer architecture, and the Serial Communications Interface (SCI) plus Serial Peripheral Interface (SPI), making it suitable for embedded control applications demanding a small instruction set with deterministic interrupt response.
Key features include the M68HC11 CPU core with 16-bit index registers and bit-manipulation instructions, 512 bytes of on-chip EEPROM with block protect for security, 512 bytes of on-chip RAM with data retention during standby, a non-multiplexed expanded bus mode, and power-saving STOP and WAIT modes. Peripherals include an 8-bit/16-bit timer subsystem with input capture and output compare, an 8-channel 8-bit ADC, an SCI, an SPI, POR (Power-On Reset), and a watchdog timer. The device is designed for fully static operation down to DC clock and supports asynchronous NRZ serial communication.
Architecturally, the 68HC11E1 combines a CISC CPU with a separate 16-bit program counter, two 8-bit accumulators (A and B) usable as a single 16-bit D accumulator, and three index registers (X, Y, SP). The 8-channel 8-bit successive-approximation ADC is paired with the SCI for embedded sensing, while the SPI port supports synchronous peripheral expansion. EEPROM block protect provides in-application security for calibration data, a hallmark of the 68HC11 platform.
Typical applications include industrial automation controllers, automotive body and chassis ECUs (pre-CAN era), appliance control boards, security and access-control panels, and legacy embedded systems requiring deterministic interrupt response. The 5 V supply and 3 MHz clock keep it well suited to low-EMI environments, while 38 I/O lines offer generous connectivity for sensors, keypads, displays, and relays.
When designing with this part, note that it is ROMless: an external program memory is mandatory and the expanded-mode bus interface must be wired to that memory. Ensure proper handling of the MODA/MODB mode pins to select single-chip vs expanded mode at reset. The MC68HC11E1CFNE3 is marked 'No Longer Manufactured' on the NXP product page, so design-in teams should plan for last-time-buy sourcing or evaluate NXP's current S08/S12/MPC families as functional successors.
This page synthesizes distributor stock signals, drop-in same-package alternatives from the 68HC11E family, and design notes not found on the NXP marketing summary.
کے لیے ڈراپ اِن متبادل MC68HC11E1CFNE3R — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں MC68HC11E1CFNE3R (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Supply Voltage, Program Memory, Serial Interfaces, Core Architecture.
MC68HC11E1CFNE2R
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
MC68HC11E1CFNE3
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
MC68HC11E0CFNE3
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →MC68HC11E0CFNE2
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
MC68HCP11E1CFNE3
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
MC68HC11E1CFNE3R زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Processor | HC11 |
| Core Size | 8-Bit |
| Core Architecture | CISC |
| Maximum Clock Speed | 3 MHz |
| Program Memory Size | ROMless (none on-chip) |
| Program Memory Type | ROMless |
| EEPROM Size | 512 x 8 bytes |
| RAM Size | 512 x 8 bytes |
| Number of I/O | 38 |
| Connectivity | SCI, SPI |
| Peripherals | POR, WDT |
| سپلائی وولٹیج | 5 V |
| آپریٹنگ درجہ حرارت | -40C to +85C (industrial) |
| پیکیج | 52-PLCC (FN) 19.1 x 19.1 mm |
| ماؤنٹنگ ٹائپ | Surface Mount |
| ڈیٹا بس چوڑائی | 8-Bit |
| Packaging | Tape & Reel (R suffix) |
MC68HC11E1CFNE3R پن کنفیگریشن
| پن 1 | IRQ — Maskable interrupt request |
| پن 2 | PA7 — Port A bit 7 / timer I/O |
| پن 3 | PA6 — Port A bit 6 |
| پن 4 | PA5 — Port A bit 5 |
| پن 5 | PA4 — Port A bit 4 |
| پن 6 | PA3 — Port A bit 3 |
| پن 7 | PA2 — Port A bit 2 |
| پن 8 | PA1 — Port A bit 1 |
| پن 9 | PA0 — Port A bit 0 |
| پن 10 | PB7 — Port B bit 7 |
| پن 11 | PB6 — Port B bit 6 |
| پن 12 | PB5 — Port B bit 5 / OC1 |
| پن 13 | PB4 — Port B bit 4 / OC2 |
| پن 14 | PB3 — Port B bit 3 / OC3 |
| پن 15 | PB2 — Port B bit 2 / OC4 |
| پن 16 | PB1 — Port B bit 1 / OC5 |
| پن 17 | PB0 — Port B bit 0 / OC6 |
| پن 18 | PC0 — Port C bit 0 / ADDR8 |
| پن 19 | PC1 — Port C bit 1 / ADDR9 |
| پن 20 | PC2 — Port C bit 2 / ADDR10 |
| پن 21 | PC3 — Port C bit 3 / ADDR11 |
| پن 22 | PC4 — Port C bit 4 / ADDR12 |
| پن 23 | PC5 — Port C bit 5 / ADDR13 |
| پن 24 | PC6 — Port C bit 6 / ADDR14 |
| پن 25 | PC7 — Port C bit 7 / ADDR15 |
| پن 26 | PD0 — Port D bit 0 / RxD |
| پن 27 | PD1 — Port D bit 1 / TxD |
| پن 28 | PD2 — Port D bit 2 |
| پن 29 | PD3 — Port D bit 3 |
| پن 30 | PD4 — Port D bit 4 |
| پن 31 | PD5 — Port D bit 5 / SS |
| پن 32 | PD6 — Port D bit 6 / SCK |
| پن 33 | PD7 — Port D bit 7 / MOSI |
| پن 34 | PE0 — Port E bit 0 / ADC0 |
| پن 35 | PE1 — Port E bit 1 / ADC1 |
| پن 36 | PE2 — Port E bit 2 / ADC2 |
| پن 37 | PE3 — Port E bit 3 / ADC3 |
| پن 38 | PE4 — Port E bit 4 / ADC4 |
| پن 39 | PE5 — Port E bit 5 / ADC5 |
| پن 40 | PE6 — Port E bit 6 / ADC6 |
| پن 41 | PE7 — Port E bit 7 / ADC7 |
| پن 42 | XIRQ — Non-maskable interrupt |
| پن 43 | MODB — Mode select B |
| پن 44 | MODA — Mode select A |
| پن 45 | RESET — Reset input, active low |
| پن 46 | VRH — ADC high reference |
| پن 47 | VRL — ADC low reference |
| پن 48 | E — E clock output |
| پن 49 | XOSC1 — Crystal oscillator input |
| پن 50 | XOSC2 — Crystal oscillator output |
| پن 51 | VDD — +5 V supply |
| پن 52 | VSS — Ground |
عام استعمالات
MC68HC11E1CFNE3R کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Automation Controllers, Automotive Body Electronics ECUs, Appliance Control Boards, Security and Access Control Panels, Point-of-Sale Terminals and Card Readers, Medical Monitoring Devices.
Industrial Automation Controllers
The MC68HC11E1CFNE3R is a strong fit for legacy industrial controllers thanks to its 8-bit HC11 CISC core at 3 MHz, 38 GPIO lines, on-chip 8-channel ADC, SCI, and SPI. The 512-byte EEPROM is used for retention of calibration constants and operating hours, while STOP/WAIT modes support low standby current. Pair it with an external EPROM for program storage in expanded mode and a 2-wire RS-485 driver for fieldbus connectivity.
تجویز کردہ
Automotive Body Electronics ECUs
Pre-CAN body ECUs - window lift, mirror control, seat control, instrument clusters - historically used the 68HC11E1 for its rugged industrial temperature range and deterministic interrupt response. The 38 GPIO drive relays, H-bridges, and LED banks directly, while the on-chip ADC reads battery voltage, thermistors, and position feedback. The -40C to +85C industrial rating covers cabin electronics, while the external bus supports mask ROM or external flash for code storage.
تجویز کردہ
Appliance Control Boards
White-goods controllers - washing machines, dishwashers, HVAC thermostats - leverage the HC11's I/O count and EEPROM block protect for storing wash-cycle parameters and tamper-resistant settings. The on-chip 8-bit ADC samples temperature sensors and water level, the timer subsystem generates PWM for motor control, and the SCI interfaces to LED or VFD displays. The 5 V single supply simplifies the analog front end for sensor conditioning.
تجویز کردہ
Security and Access Control Panels
Keypad-based alarm panels and door controllers benefit from the 38 GPIO for matrix keypads, relay drivers, siren outputs, and zone inputs. The 512-byte EEPROM stores installer codes, zone configurations, and event logs - protected by the hardware block protect feature. The SCI provides a serial link to central monitoring stations, and the on-chip watchdog prevents firmware lockup. External program memory holds the main application code.
تجویز کردہ
Point-of-Sale Terminals and Card Readers
Legacy POS terminals and magnetic-stripe card readers used the 68HC11E1 as a keyboard/display controller thanks to its generous GPIO count and integrated peripherals. The SCI links to the main terminal CPU, the SPI drives an alphanumeric LCD or dot-matrix display, and the timer subsystem generates beep tones. EEPROM stores terminal ID, encryption keys, and configuration parameters protected by the block-protect fuse.
تجویز کردہ
Medical Monitoring Devices
Low-risk medical monitoring devices - blood-pressure cuffs, thermometers, infusion pump controllers in legacy designs - use the HC11E1 for its deterministic interrupt handling and proven long-term silicon reliability. The 8-channel ADC digitizes sensor signals, the EEPROM stores calibration tables, and the SCI connects to bedside monitors. The 5 V single supply simplifies analog signal conditioning circuits. For new designs, migrate to a modern Cortex-M or S12 MCU with active longevity.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا MC68HC11E1CFNE3R — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | MC68HC11E1CFNE2R | MC68HC11E0CFNE3 | MC68HC11E0CFNE2 | MC68HCP11E1CFNE3 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 52-PLCC (FN) | 52-PLCC (FN) - same | 52-PLCC (FN) - same | 52-PLCC (FN) - same | 52-PLCC (FN) - same |
| Core / Speed | HC11 8-bit, 3 MHz | HC11 8-bit, 3 MHz | HC11 8-bit, 3 MHz | HC11 8-bit, 3 MHz | HC11 8-bit, 3 MHz |
| RAM | 512 bytes | 512 bytes | 512 bytes | 256 bytes | 512 bytes |
| EEPROM | 512 bytes | 2 KB | None (512 B ROM) | None (256 B ROM) | 512 bytes |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 3.0-5.5 V (low-voltage) |
| GPIO Count | 38 | 38 | 38 | 38 | 38 |
| Lifecycle Status | Last Time Buy (No Longer Manufactured) | Obsolete / NFM | Last Time Buy | Last Time Buy | Last Time Buy |
اہم امتیازی خصوصیات
- Larger EEPROM density in same package (بمقابلہMC68HC11E1CFNE2R)
- EEPROM available vs ROM-only (بمقابلہMC68HC11E0CFNE3)
- Standard 5 V supply vs wide-range low-voltage variant (بمقابلہMC68HCP11E1CFNE3)
- Tape & Reel ready vs tray packaging (بمقابلہMC68HC11E1CFNE3)
ڈیزائن نوٹس
Estimated: at 5 V supply, the HC11E1 in active mode draws roughly 15-25 mA depending on peripheral use, falling below 50 uA in STOP mode with the watchdog disabled. Bulk-decouple VDD with at least a 10 uF tantalum plus a 100 nF ceramic placed within 25 mm of the VDD pin, and ensure the PLL/oscillator analog supply (AVDD if separate) is filtered separately. The internal POR requires VDD ramp time within 100 ms for reliable reset.
The MC68HC11E1 is ROMless in CFNE3R: external program memory must be wired on the expanded bus, or the device must be reconfigured via the MODA/MODB pins for single-chip mode (in which case the part must be sourced with internal ROM - E0 variants). Misconfiguring the mode pins or missing an external EPROM will cause the part to execute garbage vectors on reset.
Estimated: in a 52-PLCC package the HC11E1 typically dissipates under 250 mW at 3 MHz, so a thermal heatsink is unnecessary. Theta_JA is roughly 50-60 C/W, so worst-case junction-to-ambient rise is below 15 C. Ensure ambient stays below the 85 C industrial limit and watch for self-heating only if clock is overclocked above the 3 MHz rating.
The E clock output carries a 3 MHz (or OSC/2) square wave that can couple into adjacent analog traces; route analog inputs (port E ADC) away from the E clock net and keep the E clock trace short. If the oscillator is a crystal, place the load capacitors within 5 mm of XOSC1/XOSC2 and keep digital traces clear of the crystal body.
تعمیل کی معلومات
Compliance status not stated in the verified web data for this discontinued MCU; consult NXP product environmental compliance reports for definitive RoHS/REACH status.
