MC68LK332ACEH16 - 32-bit CPU32 MCU, ROMless 132-PQFP | NXP
MPN： MC68LK332ACEH16 ✗ 停產MC68LK332ACEH16 概覽
A 32-bit microcontroller is a complete computing system on a chip that integrates a processor core, memory, and peripheral subsystems. In the M683xx hierarchy, the MC68LK332 sits within the broader family of microcontroller units (MCUs) and embedded processors, succeeding the MC68332 architecture built on the industry-standard 68000 processor lineage.
Key features include the highly-integrated modular architecture that connects standard modules through a common intermodule bus (IMB). The device incorporates a 32-bit CPU32 core, a System Integration Module (SIM), a Time Processing Unit (TPU) for autonomous timing and PWM tasks, and a Queued Serial Module (QSM) providing both a queued serial peripheral interface and a serial communications interface. Being ROMless, program code resides in external memory, making it ideal for prototyping and code-shadowing applications.
Technically, the IMB-based modular design allows independent peripheral modules to share a common bus, enabling deterministic timing. The TPU offloads time-critical I/O tasks such as engine crank angle measurement and PWM generation from the CPU, while the QSM provides queued serial transfers with minimal CPU intervention.
Typical applications include automotive engine and transmission control, industrial motor control, and embedded systems requiring rich timing functionality. This part is explicitly designated for automotive-class applications per distributor data.
Design consideration: since the device is ROMless, external memory interface timing must be verified at 16.78 MHz bus speeds, and because the part is End-of-Life, new designs should plan a migration path.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 MC68LK332ACEH16 — 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： MC68LK332ACEH16 （相同外形與佔位） — 差異在於 Package, Peripherals, Core, Supply Voltage, Program Memory Type.
MC68332GCEH16
✅ 直接替換聯絡詢價
查看資料表 →MC68332AVEH16
✅ 直接替換聯絡詢價
查看資料表 →MC68LK332ACAG16
✅ 直接替換聯絡詢價
查看資料表 →MC68LK332GCAG16
✅ 直接替換聯絡詢價
查看資料表 →LRS1316A
✅ 直接替換📋 參考替代品（不在目錄中）
MC68LK332ACEH16 最大額定值與電氣特性
| Core Processor | CPU32 |
| Core Size | 32-Bit |
| Series | M683xx (MC68332 family) |
| Max Clock Frequency | 16.78 MHz |
| Program Memory Type | ROMless (external memory) |
| SRAM | 2 KB |
| Peripherals | TPU (Time Processing Unit), QSM (Queued Serial Module), SIM (System Integration Module) |
| Intermodule Bus | IMB (common intermodule bus) |
| 供應電壓 | 5 V |
| 封裝 | 132-PQFP (24.13 x 24.13 mm) |
| 安裝類型 | Surface Mount |
| Packaging | Tray |
| Application Grade | Automotive |
| Programmable (ROM/emulation role) | Not verified - ROMless, code from external memory |
| Product Status | End of Life (Not For New Designs) |
MC68LK332ACEH16 132-pqfp (24.13 x 24.13 mm) 腳位配置指南
MC68LK332ACEH16（132-pqfp (24.13 x 24.13 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： MC68LK332ACEH16.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC68LK332ACEH16 適用於 6 應用s: Automotive Engine Control Units, Industrial Motor Control, Embedded System Prototyping and Emulation, Code Shadowing Systems, Factory Automation Controllers, Communication and Telemetry Equipment.
Automotive Engine Control Units
The MC68LK332ACEH16 is purpose-built for automotive powertrain control. Its Time Processing Unit (TPU) autonomously handles crank-angle and cam-angle pulse measurement, fuel-injection PWM, and ignition timing without CPU load - a decisive advantage at 16.78 MHz where every CPU cycle counts. The ROMless architecture lets ECU developers execute firmware from external EPROM or flash, enabling rapid recalibration during development. The 5 V, automotive-grade qualification and the System Integration Module's chip selects and watchdog make it a proven fit for engine, transmission, and chassis controller legacy platforms still in service today.
推薦
Industrial Motor Control
In industrial drives and servo controllers, the TPU's sixteen timing channels generate and capture precise PWM waveforms independently of the CPU32 core, ensuring deterministic commutation timing for BLDC, stepper, and induction motor control. The Queued Serial Module (QSM) provides both QSPI for interfacing ADCs, DACs, and gate drivers, and SCI for fieldbus-adjacent communication. With 2 KB SRAM and code in external memory, engineers can swap control firmware quickly during tuning. The 5 V logic levels also simplify interfacing with classic industrial gate-driver and sensor ICs still common on legacy factory equipment.
推薦
Embedded System Prototyping and Emulation
The ROMless MC68LK332 variant was designed expressly for development and emulation of MC68332-family products. Because program code resides in external memory, engineers can burn new firmware iterations into EPROM or flash in minutes rather than commissioning a masked-ROM cycle. The device emulates the target MC68332 behavior - identical CPU32 core, IMB modules, TPU, and QSM - so validated code runs unchanged on production masked-ROM parts. This 'develop on LK, ship on masked-ROM' workflow was a cornerstone methodology for 1990s automotive and industrial programs and remains relevant when sustaining those legacy systems.
推薦
Code Shadowing Systems
In code-shadowing architectures, the MC68LK332ACEH16 executes critical boot code from fast external memory while shadowing slower or field-replaceable code images, taking advantage of its external bus and programmable chip selects from the System Integration Module. Field-updatable firmware stored in external flash can be reprogrammed in-circuit via the QSM's serial interface, enabling remote feature updates on deployed equipment. This was a common pattern in automotive ECUs and industrial controllers requiring firmware recall or calibration updates without physical mask changes - a capability the ROMless architecture delivers by design.
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Factory Automation Controllers
Programmable logic controllers, I/O modules, and machine-control cards built on the MC68332 family benefit from the device's balanced integration: the CPU32 core handles protocol and supervisory logic, the TPU manages encoder counting and output compare timing, and QSPI scans analog and digital I/O expansion devices. The IMB modular architecture means the peripheral set behaves identically across the family, so firmware is portable between mask-ROM production parts and the ROMless development variant. Its 5 V tolerance and industrial temperature operation support the electrically noisy, high-vibration realities of factory-floor installations.
推薦
Communication and Telemetry Equipment
The Queued Serial Module gives the MC68LK332ACEH16 two serial engines in one block: the queued QSPI, which services multiple peripherals (ADCs, codec interfaces, EEPROM) from a single transfer queue with minimal CPU intervention, and the SCI UART for telemetry links, modems, and maintenance consoles. Combined with the TPU's ability to bit-bang custom serial protocols autonomously, the device suits legacy telecom line cards, telemetry concentrators, and instrumentation front-ends. External-memory operation permits protocol stacks to be updated in the field - valuable for long-service-life communication infrastructure.
推薦
推薦產品摘要
工程參考資料，適用於 MC68LK332ACEH16 — 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 | MC68332GCEH16 | MC68332AVEH16 | MC68LK332ACAG16 | LRS1316A |
|---|---|---|---|---|---|
| Package | 132-PQFP (24.13 x 24.13 mm) | 132-PQFP - same | 132-PQFP - same | PQFP (AG suffix - verify outline) | 132-PQFP - same |
| Brand | NXP Semiconductors (Freescale) | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Sharp |
| Core | CPU32, 32-bit | CPU32, 32-bit | CPU32, 32-bit | CPU32, 32-bit | CPU32, 32-bit |
| Key Peripherals | TPU, QSM (QSPI + SCI), SIM | TPU, QSM, SIM | TPU, QSM, SIM | TPU, QSM, SIM | TPU, QSM, SIM (second source) |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
主要差異化特點
- ROMless flexibility for development and field updates (對比MC68332AVEH16)
- On-chip flash for production builds (對比MC68332GCEH16)
- Autonomous TPU timing offload (對比LRS1316A)
設計說明
The MC68LK332ACEH16 is ROMless: all program code must be fetched from external memory across the external bus. Verify external memory access timing at 16.78 MHz, including address setup, chip-select assertion from the SIM, and data setup before the bus clock edge. Faster EPROM/flash may be needed if wait states are unacceptable. Additionally, the part is End-of-Life - before any board spin or repair-order batch, confirm stock availability and secure lifetime-buy quantities, since NXP has issued a discontinuance Product Change Notice.
The device operates from a single 5 V supply. Provide local decoupling (typically 0.1 uF ceramic per supply pin pair plus bulk bulk capacitance) close to the PQFP power pins, and ensure the external memory devices share a clean 5 V rail. Legacy 5 V-only designs must not interface this device directly to 3.3 V flash or RAM without level-shifting or 5 V-tolerant memory selection, since the external bus pins drive 5 V logic levels.
For the 132-PQFP (24.13 x 24.13 mm) footprint, use surface-mount land patterns per the manufacturer datasheet and keep the external bus (address/data) traces as short and matched as practical at 16.78 MHz to limit ringing and crosstalk. Route the TPU input channels (crank/cam signals in engine applications) away from noisy ignition or driver outputs, and place the QSPI bus devices (ADCs, EEPROM) within a few centimeters of the MCU with series termination on long clock runs.
The CPU32 core at 16.78 MHz and 5 V dissipates only modest power (estimated: order of hundreds of milliwatts based on 5 V operation; consult the manufacturer datasheet power tables for exact figures). A standard four-layer or even two-layer PCB with solid ground plane is normally sufficient for this PQFP - no heatsink is required. Estimated guidance only: verify against datasheet ICC specifications for your actual bus utilization and peripheral enable configuration.
合規資訊
Distributor data designates the part as automotive-grade application; formal RoHS/REACH status not exposed in the retrieved web data - verify on the NXP product page Environmental Quality section.
