MC68HC711E20CFU4 - 8-Bit 20KB EPROM 64-PQFP MCU
MPN： MC68HC711E20CFU4 ⚠ 最後購買機會MC68HC711E20CFU4 概覽
A microcontroller such as the MC68HC711E20CFU4 sits above simple logic ICs in the semiconductor hierarchy: it integrates CPU, program memory, data memory, timers, serial interfaces, and parallel I/O into one device. An 8-bit microcontroller executes instructions over an 8-bit data bus, making it well suited to appliances, industrial controllers, instrumentation, and legacy embedded platforms where cost, deterministic control, and peripheral integration matter more than high computational throughput.
The most useful verified features are the 8-bit HC11 CPU, 20 KB EPROM, 5 V operation, 64-pin PQFP package, and the listed SPI capability. The EPROM provides permanent program storage for firmware, while the large pin count supports multiple peripheral functions and dedicated I/O. The manufacturer-family description confirms that M68HC11E-series devices combine the CPU with high-performance on-chip peripherals, but exact pin functions, interrupt vectors, and peripheral limits must be taken from the complete datasheet.
MC68HC711E20CFU4 belongs to the M68HC11 E-series architecture. Its legacy 8-bit design is appropriate for embedded controllers that were originally developed around the HC11 instruction set. The part is typically programmed and qualified against the original M68HC11E documentation rather than modern high-performance MCU platforms. The verified sources identify both Motorola-era documentation and later Freescale/NXP-related distribution records, reflecting the device's long legacy support history.
Typical uses include industrial equipment, motor and process-control systems, automotive and transportation modules, communications interfaces, and embedded products where an 8-bit HC11 architecture is already established. In these applications, the controller can supervise sensors, operate actuators, manage timers, and communicate through serial peripherals while retaining a straightforward legacy software model.
The most important design consideration is supply continuity: this is a legacy microcontroller and is offered by Rochester Electronics through the verified distributor listing. Engineers should confirm stock, package suffix, memory configuration, temperature grade, and programming requirements before committing a new design. A replacement must match the exact pinout, memory map, peripheral arrangement, clock behavior, and software assumptions rather than merely having a similar instruction set.
This page consolidates the verified distributor pricing snippet, source traceability, legacy-MCU context, package information, and engineering selection cautions. The alternative section intentionally avoids unverified cross-device claims because the supplied cross-reference results did not identify enough exact, pin-compatible drop-in MPNs.
直接替換替代品，適用於 MC68HC711E20CFU4 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MC68HC711E20CFU4 （相同外形與佔位） — 差異在於 Package, Program Memory, Maximum Clock Frequency, Package Dimensions, Product Type.
MC68HC11E0CFNE3
✅ 直接替換聯絡詢價
查看資料表 →MC68HC11E0CFNE4
✅ 直接替換📋 參考替代品（不在目錄中）
MC68HC11E1CFNE2
✅ 直接替換📋 參考替代品（不在目錄中）
MC68HC11E2CFNE2
✅ 直接替換📋 參考替代品（不在目錄中）
MC68HC11E20CFU4
✅ 直接替換📋 參考替代品（不在目錄中）
MC68HC711E20CFU4 最大額定值與電氣特性
| Microcontroller Type | 8-bit microcontroller |
| CPU Core | M68HC11 / HC11 CPU |
| Program Memory | 20 KB EPROM |
| Operating Supply | 5 V |
| 最大時脈頻率 | 4 MHz |
| Architecture | 8-bit |
| Serial Interface | SPI |
| 封裝 | 64-pin PQFP |
| 安裝類型 | Surface mount |
| Package Dimensions | 14 mm x 14 mm x 2.2 mm |
| RoHS 狀態 | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
| Lead-Free Status | unknown |
| Pricing Basis | As of 2026-10-20: 1 unit $17.11; 100 units $15.31; 10000 units $14.41 |
MC68HC711E20CFU4 14 mm x 14 mm x 2.2 mm 腳位配置指南
MC68HC711E20CFU4（14 mm x 14 mm x 2.2 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MC68HC711E20CFU4.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC68HC711E20CFU4 適用於 6 應用s: Legacy Industrial Control, SPI Sensor Acquisition, Motor and Relay Control, Automotive Accessory Electronics, Instrumentation and Data Logging, Communications Interface Controller.
Legacy Industrial Control
MC68HC711E20CFU4 fits legacy industrial-control equipment that already depends on the HC11 CPU and its established memory and peripheral map. The verified part provides 20 KB EPROM for fixed control firmware, operates from 5 V, and is rated at 4 MHz in the supplied cross-reference record. Place it in an existing 64-pin PQFP control board when sensors, relays, motor drives, and interlocks already match its legacy I/O architecture. The main benefit is avoiding a platform migration and retaining known firmware behavior. Before redesign, verify the complete pinout, RAM and EEPROM resources, timer assignments, and operating-temperature limits; those values are not included in the verified excerpts.
推薦
SPI Sensor Acquisition
The verified listing identifies SPI capability, making MC68HC711E20CFU4 suitable for legacy SPI sensor acquisition when the board already uses the M68HC11E peripheral arrangement. The 5 V supply and 4 MHz device rating provide the basic operating context for a deterministic embedded controller, while 20 KB EPROM stores acquisition and filtering firmware. Use the MCU to issue sensor commands, read serial data, apply calibration, and control an actuator or status indicator. Confirm SPI clock polarity, transfer rate, chip-select mapping, and exact signal pins from the manufacturer technical data because those details are not present in the supplied snippets.
推薦
Motor and Relay Control
MC68HC711E20CFU4 can serve as the supervisory controller in legacy motor, valve, or relay systems because the verified family description identifies an M68HC11 CPU with integrated on-chip peripherals and the target includes 20 KB EPROM. The controller can sequence outputs, monitor interlocks, count events, and provide status feedback without a separate host processor. Its 64-pin PQFP package offers the pin count needed for many such legacy designs, but exact timer outputs, drive-control functions, and I/O levels must be confirmed from the complete datasheet. Use galvanic isolation and appropriate driver circuits where inductive or high-energy loads are involved.
推薦
Automotive Accessory Electronics
MC68HC711E20CFU4 is relevant to older automotive accessory and body-electronics modules where the HC11 architecture and 5 V legacy platform are already embedded. The verified records support an 8-bit controller with 20 KB EPROM and 4 MHz operation, which is consistent with non-safety-critical auxiliary functions such as panel control, relay logic, or sensor management. Automotive use requires separate verification of AEC-Q100 status, temperature range, EMC, transient immunity, and availability; none of those claims can be assumed from the package or legacy origin. Prefer the MCU for maintenance and continuation work, not for a new safety-critical design without complete qualification evidence.
推薦
Instrumentation and Data Logging
MC68HC711E20CFU4 is suitable for legacy instrumentation systems that need local control, serial communication, and permanent firmware storage in one device. The verified 20 KB EPROM can hold acquisition routines and calibration logic, while the stated SPI capability can connect to sensors or converters that share the legacy platform. In a data logger, the MCU can timestamp samples, manage storage sequencing, and report status through available serial interfaces. Verify RAM, EEPROM, timer resolution, and communication peripheral details before committing to new instrumentation; these specifications remain [DATA_NEEDED] in the supplied evidence.
推薦
Communications Interface Controller
MC68HC711E20CFU4 can act as a communications-oriented controller in older embedded systems where SPI is already used for peripheral connectivity. The verified device rating of 4 MHz and 5 V operation provides a defined legacy operating point, while 20 KB EPROM supports protocol and buffering firmware. Depending on the exact HC11 peripheral configuration, it may supervise a serial link, perform framing, or manage an attached transceiver; however, UART, baud-rate, and SPI timing details are not in the verified excerpts. Confirm the pin map and clock configuration in the manufacturer technical data before designing a new interface or claiming interoperability.
推薦
推薦產品摘要
工程參考資料，適用於 MC68HC711E20CFU4 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MC68HC11E0CFNE3 | MC68HC11E0CFNE4 | MC68HC11E1CFNE2 | MC68HC11E2CFNE2 | MC68HC11E20CFU4 |
|---|---|---|---|---|---|---|
| Brand | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor |
主要差異化特點
- Verified legacy HC11 identity (對比MC68HC11E0CFNE3)
- Confirmed 64-pin PQFP package class (對比MC68HC11E0CFNE4)
- Explicit SPI support in the verified listing (對比MC68HC11E1CFNE2)
- Known distributor pricing reference (對比MC68HC11E2CFNE2)
設計說明
Do not treat a similar HC11-family MPN as a drop-in replacement without comparing the complete package pinout. The verified target is a 64-pin PQFP with 20 KB EPROM, 5 V operation, 4 MHz rating, and SPI capability, but the supplied excerpts do not provide RAM, EEPROM, timer, interrupt, or alternate-function details. Download the full M68HC11E Family Technical Data and compare every power, ground, clock, reset, port, and peripheral signal before substitution.
Design the 5 V rail for the MCU and all attached legacy peripherals, then verify each device's actual input-voltage limits and supply sequencing from the manufacturer technical data. Do not infer a modern low-voltage power architecture from the 5 V target rating. Because the verified excerpts do not state current consumption, decoupling requirements, or voltage thresholds, use [DATA_NEEDED: power consumption and external component requirements] until the full datasheet is available.
Preserve the existing M68HC11E 64-pin PQFP land pattern when maintaining a legacy board, but inspect the package orientation, pin-1 marking, exposed thermal requirements, and solder mask before assembly. Keep clock and reset routing short, provide clean return paths, and follow the manufacturer layout guidance for any required external oscillator or timing components. The verified package dimensions are 14 mm by 14 mm by 2.2 mm, but pin-level routing data remains unavailable.
EPROM programming is a different workflow from modern Flash firmware development. Confirm the programming voltage, algorithm, erase procedure, and whether the intended part is masked-programmed, factory-programmed, or field-programmed. The verified source identifies 20 KB EPROM but does not provide programming timing or endurance; use the official technical data and programming equipment documentation before production programming.
合規資訊
The verified web snippets do not provide RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status. No compliance claim should be inferred from the legacy origin or package.
