MCHC11F1CFNE2 - 8-Bit HC11 MCU, 1KB RAM, 512B EEPROM | NXP
MPN: MCHC11F1CFNE2 ✗ Cuối đờiMCHC11F1CFNE2 Tóm tắt
What is an HC11 microcontroller? The HC11 is a classic 8-bit CISC (Complex Instruction Set Computer) microcontroller family originally developed by Motorola (later Freescale, now NXP). It belongs to the broader category of microcontrollers (MCUs) within the semiconductor hierarchy: MCU -> Microcontroller -> Embedded Processor -> Semiconductor Device. The HC11 architecture is known for its rich instruction set, on-chip peripherals (timers, A/D converter, serial communication interfaces), and flexible memory configuration, which made it popular for automotive and industrial embedded designs from the 1980s onward.
Key features of the MCHC11F1CFNE2 include the 2 MHz bus frequency derived from an external oscillator, low-power operating modes for battery-sensitive applications, multiple serial interfaces (SCI and SPI), and a robust interrupt controller. The ROMless configuration allows designers to pair the MCU with external program memory, which was commonly used for prototyping and low-volume automotive/industrial control applications where in-system updates to firmware were required.
The internal architecture combines a CPU core, 1 KB of static RAM for scratchpad and variable storage, 512 bytes of byte-erasable EEPROM for non-volatile parameter storage, and a peripheral subsystem including timers, an 8-channel 8-bit A/D converter, and serial communication peripherals. The 2 MHz clock supports deterministic execution suitable for real-time control loops in automotive ECUs.
Typical applications include automotive body controllers, instrument cluster electronics, HVAC controls, industrial sensor interfaces, and legacy industrial automation controllers. The wide operating temperature range and PLCC packaging make the part especially suited for harsh-environment automotive applications.
When designing with this device, ensure that the external oscillator and reset circuitry follow the HC11 reference manual recommendations. Because the part is ROMless, the designer must also select a compatible external memory interface; the boot mode selected at reset determines how the part fetches its initial program.
This page synthesizes distributor pricing, same-package drop-in NXP HC11 alternatives, and practical design notes that go beyond what the manufacturer datasheet alone provides for engineers sourcing the part today.
Bộ thay thế dễ dàng lắp đặt cho MCHC11F1CFNE2 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MCHC11F1CFNE2 (cùng hình factor và footprint).
MCHC11F1CFNE3R
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCHC11F1VFNE4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC68HC11F1CFN3
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCHC11F1CFNE2 Tỷ lệ tối đa & tính chất điện
| Manufacturer | NXP Semiconductors (formerly Freescale / Motorola) |
| Series | HC11 |
| Core | 8-bit HC11 CISC |
| Core Size | 8-Bit |
| Clock Speed (Max) | 2 MHz |
| Program Memory Type | ROMless (external memory required) |
| RAM Size | 1 KB |
| EEPROM Size | 512 Bytes |
| On-chip EPROM/OTP | 512 Bytes |
| Number of I/O Lines | 30 |
| Nhiệt độ hoạt động | -40C to +125C (Automotive grade) |
| Hộp | 68-PLCC (J-Lead), 24.21 x 24.21 mm |
| Kiểu lắp đặt | Surface Mount |
| Communication Interfaces | SCI (UART), SPI |
| A/D Converter | 8-channel, 8-bit (per HC11 family) |
| Tube Quantity | Per PLCC tube standard |
| Automotive Qualified | Yes (A/-EPP marking) |
Cấu hình chân MCHC11F1CFNE2
| Chân 1 | TXD — SCI transmit output |
| Chân 2 | RXD — SCI receive input |
| Chân 3 | VSS — Ground reference |
| Chân 4 | VDD — Positive supply voltage |
| Chân 5 | OSC1 — External oscillator input |
| Chân 6 | OSC2 — External oscillator output |
| Chân 7 | RESET — Reset input (active low) |
| Chân 8 | IRQ — Maskable interrupt request |
| Chân 9 | XIRQ — Non-maskable interrupt |
| Chân 10 | MODA — Mode-select A (boot mode) |
| Chân 11 | MODB — Mode-select B (boot mode) |
| Chân 12 | E — External enable clock output |
| Chân 13 | PA0 — Port A bit 0 (I/O) |
| Chân 14 | PA1 — Port A bit 1 (I/O) |
| Chân 15 | PA2 — Port A bit 2 (I/O) |
| Chân 16 | PA3 — Port A bit 3 (I/O) |
| Chân 17 | PA4 — Port A bit 4 (I/O) |
| Chân 18 | PA5 — Port A bit 5 (I/O) |
| Chân 19 | PA6 — Port A bit 6 (I/O) |
| Chân 20 | PA7 — Port A bit 7 (I/O) |
| Chân 21 | PB0 — Port B bit 0 (output, address high) |
| Chân 22 | PB1 — Port B bit 1 (output, address high) |
| Chân 23 | PB2 — Port B bit 2 (output, address high) |
| Chân 24 | PB3 — Port B bit 3 (output, address high) |
| Chân 25 | PB4 — Port B bit 4 (output, address high) |
| Chân 26 | PB5 — Port B bit 5 (output, address high) |
| Chân 27 | PB6 — Port B bit 6 (output, address high) |
| Chân 28 | PB7 — Port B bit 7 (output, address high) |
| Chân 29 | PC0 — Port C bit 0 (I/O, address/data low) |
| Chân 30 | PC1 — Port C bit 1 (I/O, address/data low) |
| Chân 31 | PC2 — Port C bit 2 (I/O, address/data low) |
| Chân 32 | PC3 — Port C bit 3 (I/O, address/data low) |
| Chân 33 | PC4 — Port C bit 4 (I/O, address/data low) |
| Chân 34 | PC5 — Port C bit 5 (I/O, address/data low) |
| Chân 35 | PC6 — Port C bit 6 (I/O, address/data low) |
| Chân 36 | PC7 — Port C bit 7 (I/O, address/data low) |
| Chân 37 | PD0 — Port D bit 0 (I/O, R/W, strobe) |
| Chân 38 | PD1 — Port D bit 1 (I/O, AS strobe) |
| Chân 39 | PD2 — Port D bit 2 (I/O) |
| Chân 40 | PD3 — Port D bit 3 (I/O) |
| Chân 41 | PD4 — Port D bit 4 (I/O) |
| Chân 42 | PD5 — Port D bit 5 (I/O) |
| Chân 43 | PD6 — Port D bit 6 (I/O) |
| Chân 44 | PD7 — Port D bit 7 (I/O) |
| Chân 45 | PE0 — Port E bit 0 (A/D input) |
| Chân 46 | PE1 — Port E bit 1 (A/D input) |
| Chân 47 | PE2 — Port E bit 2 (A/D input) |
| Chân 48 | PE3 — Port E bit 3 (A/D input) |
| Chân 49 | PE4 — Port E bit 4 (A/D input) |
| Chân 50 | PE5 — Port E bit 5 (A/D input) |
| Chân 51 | PE6 — Port E bit 6 (A/D input) |
| Chân 52 | PE7 — Port E bit 7 (A/D input) |
| Chân 53 | PF0 — Port F bit 0 (I/O) |
| Chân 54 | PF1 — Port F bit 1 (I/O) |
| Chân 55 | PF2 — Port F bit 2 (I/O, timer) |
| Chân 56 | PF3 — Port F bit 3 (I/O, timer) |
| Chân 57 | PF4 — Port F bit 4 (I/O, timer) |
| Chân 58 | PF5 — Port F bit 5 (I/O, timer) |
| Chân 59 | PF6 — Port F bit 6 (I/O, timer) |
| Chân 60 | PF7 — Port F bit 7 (I/O, timer) |
| Chân 61 | PG0 — Port G bit 0 (I/O) |
| Chân 62 | PG1 — Port G bit 1 (I/O) |
| Chân 63 | PG2 — Port G bit 2 (I/O) |
| Chân 64 | PG3 — Port G bit 3 (I/O) |
| Chân 65 | PG4 — Port G bit 4 (I/O) |
| Chân 66 | PG5 — Port G bit 5 (I/O) |
| Chân 67 | PG6 — Port G bit 6 (I/O) |
| Chân 68 | PG7 — Port G bit 7 (I/O) |
Ứng dụng tiêu biểu
MCHC11F1CFNE2 phù hợp cho 6 Áp dụngs: Automotive Body Controller, Instrument Cluster Electronics, HVAC Climate Control Module, Industrial Sensor Interface, Legacy Industrial Automation Controller, Engine Bay Auxiliary Control Module.
Automotive Body Controller
The MCHC11F1CFNE2 is widely used in automotive body controllers for central locking, mirror adjustment, wiper control, and lighting management. Its 8-bit CISC core at 2 MHz delivers deterministic real-time response, and the 30 I/O lines directly drive relays, switches, and sensor inputs. The 1 KB SRAM buffers transient sensor data, while the 512-byte EEPROM stores calibration parameters such as seat-position memory. The HC11's on-chip SCI (UART) and SPI interfaces connect the ECU to other vehicle modules over a multi-drop bus. The automotive -40C to +125C temperature grade and J-Lead PLCC package withstand the under-hood thermal and vibration environment typical of body-electronics ECUs.
Được đề xuất
Instrument Cluster Electronics
The MCHC11F1CFNE2 historically powered automotive instrument clusters, driving analog gauges, odometer displays, and warning indicators. The 8-channel 8-bit A/D converter reads fuel-level, oil-pressure, and coolant-temperature sensors directly, while the 2 MHz core executes gauge-sweep algorithms fast enough for smooth needle movement. The 512-byte EEPROM stores odometer and trip-meter data, and the 1 KB SRAM buffers display state during ignition cycles. The 30 I/O lines connect to stepper-motor drivers, LCD segment controllers, and dashboard warning LEDs. The automotive-qualified -40C to +125C temperature grade and 68-PLCC J-Lead package suit the under-dash thermal profile of instrument cluster housings.
Được đề xuất
HVAC Climate Control Module
The MCHC11F1CFNE2 controls HVAC climate modules by reading cabin and exterior-temperature inputs, blending-air-position feedback, and driving blower-motor PWM outputs. The HC11 core's deterministic instruction timing makes closed-loop PID climate control straightforward, and the 8-channel A/D converter handles multiple thermistor inputs without external multiplexing. The 512-byte EEPROM stores user climate presets and calibration data, while the SCI (UART) interface communicates with the vehicle body network. The wide -40C to +125C operating range and automotive-grade qualification make the part suitable for under-dash HVAC module installations subject to thermal cycling.
Được đề xuất
Industrial Sensor Interface
In industrial sensor interfaces, the MCHC11F1CFNE2 aggregates data from factory floor transducers (pressure, flow, level) and transmits readings over RS-232 or RS-485 links via the on-chip SCI peripheral. The 2 MHz core and 1 KB SRAM support reasonable sensor-fusion algorithms, while the 512-byte EEPROM retains calibration constants across power cycles. The 8-channel 8-bit A/D converter digitizes analog sensor outputs directly, reducing external component count. The 30 I/O lines drive status LEDs, relay outputs, and digital inputs. The -40C to +125C operating temperature and PLCC socket compatibility simplify field service for installed industrial equipment.
Được đề xuất
Legacy Industrial Automation Controller
The MCHC11F1CFNE2 continues to serve as the controller in legacy industrial automation equipment installed in the 1990s and 2000s, where replacement is preferred over redesign for service continuity. The ROMless variant allows on-site firmware updates via the external memory bus, a key requirement for industrial controllers. The 2 MHz core, 1 KB SRAM, and 512-byte EEPROM handle simple sequential-control and PID loops typical of machine-tool and material-handling equipment. The PLCC socket-compatible J-Lead package supports field replacement without desoldering. The -40C to +125C operating temperature tolerates factory-floor thermal conditions.
Được đề xuất
Engine Bay Auxiliary Control Module
The MCHC11F1CFNE2 supports auxiliary control modules mounted in the engine bay, such as cooling-fan controllers, alternator regulators, and fuel-pump drivers. The 8-channel 8-bit A/D converter reads coolant, oil, and ambient sensors, while PWM outputs on the timer pins drive fan speed and pump duty cycle. The 512-byte EEPROM stores adaptive trim values, and the 1 KB SRAM buffers transient control-loop variables. The 30 I/O lines interface with H-bridge drivers and discrete power stages. The -40C to +125C automotive temperature grade and 68-PLCC J-Lead package withstand engine-bay thermal and vibration loads.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MCHC11F1CFNE2 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MCHC11F1CFNE3R | MCHC11F1VFNE4 | MC68HC11F1CFN3 |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors (formerly Motorola) |
| Package | 68-PLCC (J-Lead), 24.21x24.21 mm | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same |
| Core | 8-bit HC11 CISC | 8-bit HC11 CISC (same) | 8-bit HC11 CISC (same) | 8-bit HC11 CISC (same) |
| Max Clock Speed | 2 MHz | 2 MHz | 2 MHz | 2 MHz |
| RAM Size | 1 KB | 1 KB | 1 KB | 1 KB |
| EEPROM Size | 512 Bytes | 512 Bytes | 512 Bytes | 512 Bytes |
| Program Memory | ROMless (external) | ROMless (external) | Higher on-chip memory variant | Mask-ROM option variant |
| Number of I/O | 30 | 30 | 30 | 30 |
| Operating Temperature | -40C to +125C (Automotive) | -40C to +125C | -40C to +125C | -40C to +125C |
| Lifecycle Status | NRND | Active (current revision) | Active | Obsolete (legacy) |
Bảo phân biệt quan trọng
- ROMless variant allows external firmware updates without re-programming internal mask ROM (vsMCHC11F1CFNE3R)
- On-chip 512-byte EPROM/OTP for factory calibration values (vsMCHC11F1VFNE4)
- Automotive -40C to +125C operating range with A/-EPP marking (vsMC68HC11F1CFN3)
Ghi chú thiết kế
The HC11F1 requires a stable 5V supply (typical VDD = 5.0V +/- 10%) with sufficient decoupling on the VDD/VSS pin pairs. Place 100 nF ceramic decoupling capacitors as close as possible to each VDD pin and a 10 uF bulk tantalum or aluminum capacitor on the main supply rail. The PLL and bus logic draw substantial transient current during E-clock edges, and inadequate decoupling causes spurious resets and bus errors. The HC11 power-on reset sequence requires VDD to reach valid levels within the datasheet datasheet-specified rise time.
The 68-PLCC J-Lead package has generous 1.27 mm pin pitch which simplifies hand-soldering and inspection. However, the J-Lead form factor traps solder under the leads, so a proper solder paste stencil aperture (4 to 6 mil reduction from the pad) is required for reflow. For socketed designs, use a machined-pin PLCC socket to ensure reliable retention under thermal cycling and vibration. Keep the external oscillator traces short and guarded with ground pour to minimize clock noise coupling into the A/D converter and serial peripherals.
Because the MCHC11F1CFNE2 is ROMless, the boot mode (MODA/MODB pins) MUST be correctly strapped at reset for the part to fetch code from the external memory bus. Incorrect boot-mode strapping results in the MCU appearing 'dead' on the bench. Additionally, the 512-byte EPROM/OTP area is one-time programmable and CANNOT be erased; use the 512-byte EEPROM for any data that requires in-field updates, and reserve EPROM for factory calibration values. Always validate the reset circuitry against the HC11 reference manual; missing reset capacitors cause intermittent startup failures.
The external address/data bus runs at the full 2 MHz E-clock rate with sub-25 ns rise/fall edges. Route the address and data lines in parallel with matched lengths and keep trace impedance near 50 ohms for reliable operation with external peripheral chips. Place a 33 ohm series resistor on the E clock output near the MCU to dampen reflections. Use ground guards between the bus and analog A/D input traces (Port E) to prevent digital switching noise from corrupting sensor readings.
Thông tin tuân thủ
AEC-Q100 does not formally apply to legacy HC11 family parts; automotive grade is indicated by the A/-EPP suffix marking and the -40C to +125C operating temperature. RoHS/REACH/lead-free status was not present in the Verified Web Data and is marked unknown pending direct datasheet confirmation from NXP.
