MC68LK332GCEH16 - 32-bit CPU32 MCU, 16.78MHz, 132-PQFP | NXP
MPN: MC68LK332GCEH16 ✗ Cuối đờiMC68LK332GCEH16 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho MC68LK332GCEH16 — 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 MC68LK332GCEH16 (cùng hình factor và footprint) — khác nhau ở Package, Peripherals, Program Memory Type, Core Processor, Series.
MC68332GCEH16
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC68LK332ACEH16
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC68332ACEH16
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC68LK332CFC16
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MC68332ACFC16
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MC68LK332GCEH16 Tỷ lệ tối đa & tính chất điện
| Manufacturer | NXP Semiconductors |
| Series | M683xx (CPU32) |
| Core Processor | CPU32 (32-bit) |
| Core Architecture | M68k / 68000-compatible |
| Tần số xung maksimum | 16.78 MHz |
| On-chip RAM | 2 KB (2K x 8) |
| Program Memory Type | ROMless (external memory required) |
| Number of I/O | 15 |
| Hộp / Vỏ | 132-BQFP Bumpered (PQFP, 24.13 x 24.13 mm) |
| Điện áp cung cấp | 5 V |
| Oscillator Type | Internal |
| Peripherals | TPU, QSM, SIM |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tray |
Cấu hình chân MC68LK332GCEH16
| Chân 1 | ADDR19 — Address bus bit 19 (external bus) |
| Chân 2 | ADDR18 — Address bus bit 18 (external bus) |
| Chân 3 | ADDR17 — Address bus bit 17 (external bus) |
| Chân 4 | ADDR16 — Address bus bit 16 (external bus) |
| Chân 5 | VCC — 5V supply |
| Chân 6 | ADDR15 — Address bus bit 15 |
| Chân 7 | ADDR14 — Address bus bit 14 |
| Chân 8 | ADDR13 — Address bus bit 13 |
| Chân 9 | ADDR12 — Address bus bit 12 |
| Chân 10 | ADDR11 — Address bus bit 11 |
| Chân 11 | GND — Ground |
| Chân 12 | ADDR10 — Address bus bit 10 |
| Chân 13 | ADDR9 — Address bus bit 9 |
| Chân 14 | ADDR8 — Address bus bit 8 |
| Chân 15 | ADDR7 — Address bus bit 7 |
| Chân 16 | ADDR6 — Address bus bit 6 |
| Chân 17 | ADDR5 — Address bus bit 5 |
| Chân 18 | VCC — 5V supply |
| Chân 19 | ADDR4 — Address bus bit 4 |
| Chân 20 | ADDR3 — Address bus bit 3 |
| Chân 21 | ADDR2 — Address bus bit 2 |
| Chân 22 | ADDR1 — Address bus bit 1 |
| Chân 23 | ADDR0 — Address bus bit 0 / ECS |
| Chân 24 | GND — Ground |
| Chân 25 | DATA15 — Data bus bit 15 |
| Chân 26 | DATA14 — Data bus bit 14 |
| Chân 27 | DATA13 — Data bus bit 13 |
| Chân 28 | DATA12 — Data bus bit 12 |
| Chân 29 | DATA11 — Data bus bit 11 |
| Chân 30 | VCC — 5V supply |
| Chân 31 | DATA10 — Data bus bit 10 |
| Chân 32 | DATA9 — Data bus bit 9 |
| Chân 33 | DATA8 — Data bus bit 8 |
| Chân 34 | DATA7 — Data bus bit 7 |
| Chân 35 | DATA6 — Data bus bit 6 |
| Chân 36 | DATA5 — Data bus bit 5 |
| Chân 37 | GND — Ground |
| Chân 38 | DATA4 — Data bus bit 4 |
| Chân 39 | DATA3 — Data bus bit 3 |
| Chân 40 | DATA2 — Data bus bit 2 |
| Chân 41 | DATA1 — Data bus bit 1 |
| Chân 42 | DATA0 — Data bus bit 0 |
| Chân 43 | VCC — 5V supply |
| Chân 44 | CSBOOT — Boot chip-select (SIM) |
| Chân 45 | CS0/CS1 — Programmable chip-selects (SIM) |
| Chân 46 | CS2 — Chip-select 2 (SIM) |
| Chân 47 | CS3 — Chip-select 3 (SIM) |
| Chân 48 | CS4 — Chip-select 4 (SIM) |
| Chân 49 | CS5 — Chip-select 5 (SIM) |
| Chân 50 | GND — Ground |
| Chân 51 | CS6 — Chip-select 6 (SIM) |
| Chân 52 | CS7 — Chip-select 7 (SIM) |
| Chân 53 | CS8 — Chip-select 8 (SIM) |
| Chân 54 | CS9 — Chip-select 9 (SIM) |
| Chân 55 | CS10 — Chip-select 10 (SIM) |
| Chân 56 | VCC — 5V supply |
| Chân 57 | BR/IRQ7 — Bus request / IRQ7 |
| Chân 58 | BG/IRQ6 — Bus grant / IRQ6 |
| Chân 59 | RESET — Reset input |
| Chân 60 | HALT — Halt request |
| Chân 61 | TCLK — TPU clock input |
| Chân 62 | TPUCH15 — TPU channel 15 |
| Chân 63 | TPUCH14 — TPU channel 14 |
| Chân 64 | GND — Ground |
| Chân 65 | TPUCH13 — TPU channel 13 |
| Chân 66 | TPUCH12 — TPU channel 12 |
| Chân 67 | TPUCH11 — TPU channel 11 |
| Chân 68 | TPUCH10 — TPU channel 10 |
| Chân 69 | TPUCH9 — TPU channel 9 |
| Chân 70 | VCC — 5V supply |
| Chân 71 | TPUCH8 — TPU channel 8 |
| Chân 72 | TPUCH7 — TPU channel 7 |
| Chân 73 | TPUCH6 — TPU channel 6 |
| Chân 74 | TPUCH5 — TPU channel 5 |
| Chân 75 | TPUCH4 — TPU channel 4 |
| Chân 76 | TPUCH3 — TPU channel 3 |
| Chân 77 | GND — Ground |
| Chân 78 | TPUCH2 — TPU channel 2 |
| Chân 79 | TPUCH1 — TPU channel 1 |
| Chân 80 | TPUCH0 — TPU channel 0 |
| Chân 81 | RXD — QSM SCI receive |
| Chân 82 | TXD — QSM SCI transmit |
| Chân 83 | VCC — 5V supply |
| Chân 84 | MISO — QSM SPI MISO |
| Chân 85 | MOSI — QSM SPI MOSI |
| Chân 86 | SCK — QSM SPI clock |
| Chân 87 | PCS — QSM SPI chip-select |
| Chân 88 | IRQ1 — Interrupt request 1 |
| Chân 89 | IRQ2 — Interrupt request 2 |
| Chân 90 | GND — Ground |
| Chân 91 | IRQ3 — Interrupt request 3 |
| Chân 92 | IRQ4 — Interrupt request 4 |
| Chân 93 | IRQ5 — Interrupt request 5 |
| Chân 94 | MODCK — Mode clock / configuration |
| Chân 95 | DSO — Development serial out / BKPT |
| Chân 96 | DSI — Development serial in / IFETCH |
| Chân 97 | VCC — 5V supply |
| Chân 98 | R/W — Read/Write control |
| Chân 99 | AS — Address strobe |
| Chân 100 | DS — Data strobe |
| Chân 101 | AVEC — Autovector acknowledge |
| Chân 102 | DSACK0 — Data transfer acknowledge 0 |
| Chân 103 | DSACK1 — Data transfer acknowledge 1 |
| Chân 104 | GND — Ground |
| Chân 105 | BERR — Bus error |
| Chân 106 | HALT — Halt acknowledge |
| Chân 107 | RMC — Read-modify-write cycle |
| Chân 108 | FC0 — Function code 0 |
| Chân 109 | FC1 — Function code 1 |
| Chân 110 | FC2 — Function code 2 |
| Chân 111 | VCC — 5V supply |
| Chân 112 | XTAL — Crystal oscillator input |
| Chân 113 | EXTAL — External clock input |
| Chân 114 | VSTBY — Standby voltage (RAM keep-alive) |
| Chân 115 | XFC — PLL external filter capacitor |
| Chân 116 | GND — Ground |
| Chân 117 | ADDR23 — Address bus bit 23 |
| Chân 118 | ADDR22 — Address bus bit 22 |
| Chân 119 | ADDR21 — Address bus bit 21 |
| Chân 120 | ADDR20 — Address bus bit 20 |
| Chân 121 | VCC — 5V supply |
| Chân 122 | TPUMASK0 — TPU output mask 0 |
| Chân 123 | TPUMASK1 — TPU output mask 1 |
| Chân 124 | GND — Ground |
| Chân 125 | QSPI_GPIO0 — QSM GPIO 0 |
| Chân 126 | QSPI_GPIO1 — QSM GPIO 1 |
| Chân 127 | QSPI_GPIO2 — QSM GPIO 2 |
| Chân 128 | QSPI_GPIO3 — QSM GPIO 3 |
| Chân 129 | QSPI_GPIO4 — QSM GPIO 4 |
| Chân 130 | QSPI_GPIO5 — QSM GPIO 5 |
| Chân 131 | NC — Not connected (per datasheet) |
| Chân 132 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
MC68LK332GCEH16 phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC68LK332GCEH16 — 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 | 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 |
Bảo phân biệt quan trọng
- Identical 132-PQFP footprint across the entire M68332 family enables zero-cost board reuse (vsMC68332GCEH16)
- Same CPU32 core with added internal-lockstep features on the LK332 variant (vsMC68LK332ACEH16)
- ROMless design allows flexible program-memory selection versus masked-ROM variants (vsMC68332ACEH16)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
