MC68LK332GCEH16 - 32-bit CPU32 MCU, 16.78MHz, 132-PQFP | NXP
MPN: MC68LK332GCEH16 ✗ انتهى عمره الإنتاجيMC68LK332GCEH16 نظرة عامة
Background: A microcontroller (MCU) is a single-chip computer containing a CPU core, memory, and peripherals. The MC68332 family uses Freescale/NXP's CPU32 core - a 32-bit extension of the M68k architecture that retains full source compatibility with the 68000 instruction set while adding new instructions for embedded control. In the system hierarchy it sits as a microcontroller > 32-bit MCU > automotive/industrial MCU.
Key features include the TPU, a dedicated co-processor that offloads complex timing tasks (PWM, pulse measurement, motor control) from the CPU, and the QSM, which provides queued serial communications (SPI and SCI) with DMA-style handshaking. The SIM integrates chip selects, interrupt controllers, and clock generation, drastically reducing external glue logic. The ROMless architecture allows designers to use external flash or EPROM, supporting legacy and custom boot configurations.
Technical depth: Standard modules interface through the Intermodule Bus (IMB), a proprietary internal bus that decouples peripherals from the CPU. This architecture was industry-defining for modular embedded design in the 1990s and remains supported by long-lifecycle industrial and automotive customers. The part operates from a 5V supply, and the 16.78 MHz bus rate is derived from an internal oscillator.
Typical applications include industrial motor control using TPU channels, automotive body and chassis controllers, robotics servo control, and legacy equipment retrofits. This page synthesizes NXP product information, distributor availability, drop-in alternatives, and design considerations not all found in the original datasheet.
بدائل مباشرة لـ MC68LK332GCEH16 — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع MC68LK332GCEH16 (نفس عامل الشكل والبصمة) — يختلف في Package, Peripherals, Program Memory Type, Core Processor, Series.
MC68332GCEH16
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←MC68LK332ACEH16
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←MC68332ACEH16
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←MC68LK332CFC16
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
MC68332ACFC16
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←MC68LK332GCEH16 الحدود القصوى والخصائص الكهربائية
| Manufacturer | NXP Semiconductors |
| Series | M683xx (CPU32) |
| Core Processor | CPU32 (32-bit) |
| Core Architecture | M68k / 68000-compatible |
| أقصى تردد للساعة | 16.78 MHz |
| On-chip RAM | 2 KB (2K x 8) |
| Program Memory Type | ROMless (external memory required) |
| Number of I/O | 15 |
| العلبة / الحالة | 132-BQFP Bumpered (PQFP, 24.13 x 24.13 mm) |
| جهد التغذية | 5 V |
| Oscillator Type | Internal |
| Peripherals | TPU, QSM, SIM |
| نوع التركيب | Surface Mount |
| Packaging | Tray |
تكوين أطراف MC68LK332GCEH16
| دبوس 1 | ADDR19 — Address bus bit 19 (external bus) |
| دبوس 2 | ADDR18 — Address bus bit 18 (external bus) |
| دبوس 3 | ADDR17 — Address bus bit 17 (external bus) |
| دبوس 4 | ADDR16 — Address bus bit 16 (external bus) |
| دبوس 5 | VCC — 5V supply |
| دبوس 6 | ADDR15 — Address bus bit 15 |
| دبوس 7 | ADDR14 — Address bus bit 14 |
| دبوس 8 | ADDR13 — Address bus bit 13 |
| دبوس 9 | ADDR12 — Address bus bit 12 |
| دبوس 10 | ADDR11 — Address bus bit 11 |
| دبوس 11 | GND — Ground |
| دبوس 12 | ADDR10 — Address bus bit 10 |
| دبوس 13 | ADDR9 — Address bus bit 9 |
| دبوس 14 | ADDR8 — Address bus bit 8 |
| دبوس 15 | ADDR7 — Address bus bit 7 |
| دبوس 16 | ADDR6 — Address bus bit 6 |
| دبوس 17 | ADDR5 — Address bus bit 5 |
| دبوس 18 | VCC — 5V supply |
| دبوس 19 | ADDR4 — Address bus bit 4 |
| دبوس 20 | ADDR3 — Address bus bit 3 |
| دبوس 21 | ADDR2 — Address bus bit 2 |
| دبوس 22 | ADDR1 — Address bus bit 1 |
| دبوس 23 | ADDR0 — Address bus bit 0 / ECS |
| دبوس 24 | GND — Ground |
| دبوس 25 | DATA15 — Data bus bit 15 |
| دبوس 26 | DATA14 — Data bus bit 14 |
| دبوس 27 | DATA13 — Data bus bit 13 |
| دبوس 28 | DATA12 — Data bus bit 12 |
| دبوس 29 | DATA11 — Data bus bit 11 |
| دبوس 30 | VCC — 5V supply |
| دبوس 31 | DATA10 — Data bus bit 10 |
| دبوس 32 | DATA9 — Data bus bit 9 |
| دبوس 33 | DATA8 — Data bus bit 8 |
| دبوس 34 | DATA7 — Data bus bit 7 |
| دبوس 35 | DATA6 — Data bus bit 6 |
| دبوس 36 | DATA5 — Data bus bit 5 |
| دبوس 37 | GND — Ground |
| دبوس 38 | DATA4 — Data bus bit 4 |
| دبوس 39 | DATA3 — Data bus bit 3 |
| دبوس 40 | DATA2 — Data bus bit 2 |
| دبوس 41 | DATA1 — Data bus bit 1 |
| دبوس 42 | DATA0 — Data bus bit 0 |
| دبوس 43 | VCC — 5V supply |
| دبوس 44 | CSBOOT — Boot chip-select (SIM) |
| دبوس 45 | CS0/CS1 — Programmable chip-selects (SIM) |
| دبوس 46 | CS2 — Chip-select 2 (SIM) |
| دبوس 47 | CS3 — Chip-select 3 (SIM) |
| دبوس 48 | CS4 — Chip-select 4 (SIM) |
| دبوس 49 | CS5 — Chip-select 5 (SIM) |
| دبوس 50 | GND — Ground |
| دبوس 51 | CS6 — Chip-select 6 (SIM) |
| دبوس 52 | CS7 — Chip-select 7 (SIM) |
| دبوس 53 | CS8 — Chip-select 8 (SIM) |
| دبوس 54 | CS9 — Chip-select 9 (SIM) |
| دبوس 55 | CS10 — Chip-select 10 (SIM) |
| دبوس 56 | VCC — 5V supply |
| دبوس 57 | BR/IRQ7 — Bus request / IRQ7 |
| دبوس 58 | BG/IRQ6 — Bus grant / IRQ6 |
| دبوس 59 | RESET — Reset input |
| دبوس 60 | HALT — Halt request |
| دبوس 61 | TCLK — TPU clock input |
| دبوس 62 | TPUCH15 — TPU channel 15 |
| دبوس 63 | TPUCH14 — TPU channel 14 |
| دبوس 64 | GND — Ground |
| دبوس 65 | TPUCH13 — TPU channel 13 |
| دبوس 66 | TPUCH12 — TPU channel 12 |
| دبوس 67 | TPUCH11 — TPU channel 11 |
| دبوس 68 | TPUCH10 — TPU channel 10 |
| دبوس 69 | TPUCH9 — TPU channel 9 |
| دبوس 70 | VCC — 5V supply |
| دبوس 71 | TPUCH8 — TPU channel 8 |
| دبوس 72 | TPUCH7 — TPU channel 7 |
| دبوس 73 | TPUCH6 — TPU channel 6 |
| دبوس 74 | TPUCH5 — TPU channel 5 |
| دبوس 75 | TPUCH4 — TPU channel 4 |
| دبوس 76 | TPUCH3 — TPU channel 3 |
| دبوس 77 | GND — Ground |
| دبوس 78 | TPUCH2 — TPU channel 2 |
| دبوس 79 | TPUCH1 — TPU channel 1 |
| دبوس 80 | TPUCH0 — TPU channel 0 |
| دبوس 81 | RXD — QSM SCI receive |
| دبوس 82 | TXD — QSM SCI transmit |
| دبوس 83 | VCC — 5V supply |
| دبوس 84 | MISO — QSM SPI MISO |
| دبوس 85 | MOSI — QSM SPI MOSI |
| دبوس 86 | SCK — QSM SPI clock |
| دبوس 87 | PCS — QSM SPI chip-select |
| دبوس 88 | IRQ1 — Interrupt request 1 |
| دبوس 89 | IRQ2 — Interrupt request 2 |
| دبوس 90 | GND — Ground |
| دبوس 91 | IRQ3 — Interrupt request 3 |
| دبوس 92 | IRQ4 — Interrupt request 4 |
| دبوس 93 | IRQ5 — Interrupt request 5 |
| دبوس 94 | MODCK — Mode clock / configuration |
| دبوس 95 | DSO — Development serial out / BKPT |
| دبوس 96 | DSI — Development serial in / IFETCH |
| دبوس 97 | VCC — 5V supply |
| دبوس 98 | R/W — Read/Write control |
| دبوس 99 | AS — Address strobe |
| دبوس 100 | DS — Data strobe |
| دبوس 101 | AVEC — Autovector acknowledge |
| دبوس 102 | DSACK0 — Data transfer acknowledge 0 |
| دبوس 103 | DSACK1 — Data transfer acknowledge 1 |
| دبوس 104 | GND — Ground |
| دبوس 105 | BERR — Bus error |
| دبوس 106 | HALT — Halt acknowledge |
| دبوس 107 | RMC — Read-modify-write cycle |
| دبوس 108 | FC0 — Function code 0 |
| دبوس 109 | FC1 — Function code 1 |
| دبوس 110 | FC2 — Function code 2 |
| دبوس 111 | VCC — 5V supply |
| دبوس 112 | XTAL — Crystal oscillator input |
| دبوس 113 | EXTAL — External clock input |
| دبوس 114 | VSTBY — Standby voltage (RAM keep-alive) |
| دبوس 115 | XFC — PLL external filter capacitor |
| دبوس 116 | GND — Ground |
| دبوس 117 | ADDR23 — Address bus bit 23 |
| دبوس 118 | ADDR22 — Address bus bit 22 |
| دبوس 119 | ADDR21 — Address bus bit 21 |
| دبوس 120 | ADDR20 — Address bus bit 20 |
| دبوس 121 | VCC — 5V supply |
| دبوس 122 | TPUMASK0 — TPU output mask 0 |
| دبوس 123 | TPUMASK1 — TPU output mask 1 |
| دبوس 124 | GND — Ground |
| دبوس 125 | QSPI_GPIO0 — QSM GPIO 0 |
| دبوس 126 | QSPI_GPIO1 — QSM GPIO 1 |
| دبوس 127 | QSPI_GPIO2 — QSM GPIO 2 |
| دبوس 128 | QSPI_GPIO3 — QSM GPIO 3 |
| دبوس 129 | QSPI_GPIO4 — QSM GPIO 4 |
| دبوس 130 | QSPI_GPIO5 — QSM GPIO 5 |
| دبوس 131 | NC — Not connected (per datasheet) |
| دبوس 132 | NC — Not connected (per datasheet) |
التطبيقات النموذجية
MC68LK332GCEH16 مناسب لـ 6 التطبيقs: Industrial Servo Motor Control, Automotive Body and Chassis Controllers, Robotics and CNC Machine Controllers, Industrial Instrumentation and Data Acquisition, Legacy Telecom Line Card Control, Avionics Subsystem Controllers (Legacy).
Industrial Servo Motor Control
The MC68LK332GCEH16's integrated Time Processing Unit (TPU) executes PWM generation, pulse-width measurement, and quadrature decoding autonomously, offloading timing-critical tasks from the CPU32 core. This makes the part ideal for industrial servo drives and stepper controllers in the 10-50 kHz switching range. Engineers benefit from 2KB on-chip RAM for fast loop variables while storing the application in external EPROM mapped via the SIM chip-select logic. Unlike newer Cortex-M parts, the MC68LK332 provides deterministic interrupt latency through its SIM, which is critical for closed-loop motor control where jitter translates directly into torque ripple. The 132-PQFP package supports legacy industrial backplanes still in service.
موصى به
Automotive Body and Chassis Controllers
The MC68LK332GCEH16 was widely adopted in automotive body controllers (window lifts, seat control, HVAC flaps) and chassis subsystems where deterministic real-time response matters more than raw clock speed. The TPU handles multiple PWM channels for motor drivers and lighting, while the QSM provides SCI links to other ECUs over the vehicle CAN bridge. With 16.78 MHz and 32-bit instructions, the part can service 15 I/O lines plus serial channels without software bottlenecks. Although obsolete for new automotive designs, the MC68LK332 remains in service fleets and aftermarket parts programs where pin compatibility with the 132-PQFP footprint is essential for repair without board rework.
موصى به
Robotics and CNC Machine Controllers
The MC68LK332GCEH16 is a strong fit for legacy robotics and CNC controllers thanks to its combination of CPU32 throughput, TPU-driven servo loops, and QSM serial links. The 32-bit core executes trajectory planner code while the TPU independently maintains up to 16 timing channels for axis PWM and encoder feedback. With 2KB on-chip RAM the CPU32 handles PID loops for multi-axis machines and can serve as the master controller over RS-485 or SPI links to per-axis drives. The 132-PQFP package remains common in industrial backplane designs where existing CNC retrofit programs need an exact pin-compatible MCU.
موصى به
Industrial Instrumentation and Data Acquisition
For data-acquisition front-ends and process instrumentation, the MC68LK332GCEH16 combines the CPU32's 32-bit math with the QSM's serial channels for sensor interfacing. The part streams converted data over SCI or SPI to a host controller while the TPU maintains precise sample-timing intervals. Its 5V supply rail is well matched to legacy industrial signal chains. Although the 2KB on-chip RAM is modest, external SRAM expansion via the SIM chip-select pins supports buffer sizes typical of process-control systems. The 132-PQFP footprint is also accepted by test fixtures already deployed for calibration and burn-in.
موصى به
Legacy Telecom Line Card Control
The MC68LK332GCEH16 was designed into telecom line cards and central-office control boards where the CPU32's deterministic interrupt response and QSM serial ports simplified multi-port management. The integrated SIM provides chip-select decoding for the multiple EPROM and SRAM devices typical of telecom firmware storage, eliminating external glue logic. With 16.78 MHz and 32-bit instructions, the part manages switch-hook detection, ringing control, and codec handshaking in real time. The 132-PQFP package remains in service on legacy backplanes and is required for repair-only programs.
موصى به
Avionics Subsystem Controllers (Legacy)
Although the MC68LK332GCEH16 is obsolete, it remains specified in some legacy avionics subsystems (actuator controllers, cockpit lighting, fuel-system monitors) where its deterministic interrupt structure and QSM serial channels provide reliable real-time control. The TPU generates precision PWM for servo actuators while the CPU32 runs the supervisor loop. The 132-PQFP package is qualified in legacy DO-160 environmental windows for certain platform programs. Engineers maintaining these systems rely on the exact pin-compatible MC68332 family to support repair and overhaul pipelines without re-laying out boards.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ MC68LK332GCEH16 — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | MC68332GCEH16 | MC68LK332ACEH16 | MC68332ACEH16 | MC68LK332CFC16 | MC68332ACFC16 |
|---|---|---|---|---|---|---|
| Package | 132-BQFP Bumpered (PQFP, 24.13x24.13 mm) | 132-BQFP Bumpered (PQFP, 24.13x24.13 mm) - same | 132-BQFP Bumpered (PQFP, 24.13x24.13 mm) - same | 132-BQFP Bumpered (PQFP, 24.13x24.13 mm) - same | 132-BQFP Bumpered (PQFP, 24.13x24.13 mm) - same | 132-BQFP Bumpered (PQFP, 24.13x24.13 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | CPU32 (32-bit) | CPU32 (32-bit) | CPU32 (32-bit) | CPU32 (32-bit) | CPU32 (32-bit) | CPU32 (32-bit) |
| Maximum Clock Frequency | 16.78 MHz | 16 MHz | 16.78 MHz | 16 MHz | 16.78 MHz | 16 MHz |
| On-chip RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Program Memory | ROMless | ROMless | ROMless | ROMless | ROMless | ROMless |
| Peripherals | TPU, QSM, SIM | TPU, QSM, SIM | TPU, QSM, SIM | TPU, QSM, SIM | TPU, QSM, SIM | TPU, QSM, SIM |
| Operating Temperature Grade | Industrial (G suffix) | Industrial (G suffix) | Automotive (A suffix) | Automotive (A suffix) | Industrial (C suffix) | Automotive (A suffix, C grade) |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
أبرز الفروقات
- Identical 132-PQFP footprint across the entire M68332 family enables zero-cost board reuse (مقابلMC68332GCEH16)
- Same CPU32 core with added internal-lockstep features on the LK332 variant (مقابلMC68LK332ACEH16)
- ROMless design allows flexible program-memory selection versus masked-ROM variants (مقابلMC68332ACEH16)
ملاحظات التصميم
The MC68LK332GCEH16 requires a stable 5V supply; the VSTBY pin must be connected to a backup supply (typically a coin cell or super-cap) to retain the 2KB on-chip static RAM during power-down. Add bulk decoupling (10uF tantalum) close to each VCC pin and 0.1uF ceramic bypass capacitors near every supply pair to suppress switching noise from the TPU output transitions. The VSTBY current is in the microampere range - see NXP datasheet for exact retention current when sizing the backup source.
The 132-PQFP package has fine-pitch leads (0.635 mm pitch typical); the Bumpered corners help protect the leads during handling but do not relax PCB layout rules. Use 4-layer PCB with continuous ground plane directly under the IC to control impedance on the address and data buses, which toggle at 16.78 MHz. Match the trace lengths of DS, AS, and R/W strobes to avoid skew, and route CLKOUT away from analog sections to minimize crosstalk with the VCO-controlled PLL filter capacitor on XFC.
Do not assume the MC68LK332GCEH16 has internal Flash - it is ROMless, requiring external EPROM or Flash for program storage. Mapping errors in the System Integration Module (SIM) chip-select configuration are the most common bring-up failures; verify CSBOOT and CS0/CS1 base-address registers against the actual memory device addresses. Also confirm the PLL filter capacitor value on XFC matches the NXP reference design - a wrong value causes clock jitter or lock failure, leading to intermittent operation across temperature.
Place external memory (EPROM/Flash and SRAM) as close to the address and data bus pins as possible to minimize bus-loading and reflection. The 32-bit address bus plus 16-bit data bus totals 48 high-speed signals; route them over a continuous ground plane and use series damping resistors (22-33 ohm) near the MCU on heavily-loaded signals if needed. Keep the XFC PLL filter capacitor within 5mm of the pin with a short, guarded trace, since noise coupling into XFC directly modulates the system clock.
معلومات الامتثال
Compliance status not stated in verified web data; the part is obsolete per NXP product page and the original 1996 datasheet predates current RoHS/REACH documentation. Designers should request a compliance certificate from the distributor for any new procurement.
