MC68332GVAG25 - 25MHz CPU32 MCU 2KRAM TPU QSM | NXP
MPN： MC68332GVAG25 ✗ 停產MC68332GVAG25 概覽
A microcontroller (MCU) is a single-chip computer containing a processor core, memory, and programmable input/output peripherals integrated on one integrated circuit. The M683xx family belongs to the broader category of 32-bit embedded microcontrollers, descendants of the Motorola 68000 architecture that evolved into the Freescale (now NXP) ColdFire and Power Architecture lines. Within the embedded hierarchy, MCUs sit above digital signal processors in compute capability but below microprocessors in raw performance, optimized for real-time deterministic control tasks where reliability and interrupt latency dominate over throughput.
Key features include the dedicated Timer Processing Unit that offloads complex timing operations from the CPU, the Queued Serial Module providing SPI and SCI/UART serial communication, two Kbytes of dual-ported system RAM for shared CPU/peripheral access, and the CPU32 instruction set extending the 68000 with enhanced addressing modes. The intermodule bus (IMB) connects these blocks at high bandwidth, enabling deterministic peripheral-to-CPU data transfers without external glue logic.
The MC68332 architecture uses a 32-bit internal architecture with 16-bit external data bus and 24-bit external address bus, supporting up to 16 Mbytes of linear address space. Operating voltage spans 4.5V to 5.5V with 31 I/O ports and JTAG/BDM background-debug interface. The device is widely used in automotive engine control, industrial automation, and avionics applications where the TPU's hardware timing channels simplify PWM generation and input capture tasks.
Typical applications include automotive engine management, industrial servo control, robotics motion controllers, and embedded networking equipment. Its TPU excels at generating complex PWM waveforms and decoding quadrature encoder signals without burdening the main CPU.
When designing with this part, consider the 5V supply requirement, ensure external memory is correctly mapped into the linear address space, and use the BDM port for non-intrusive firmware development. The ROMless configuration requires external boot memory, typically a parallel EPROM/Flash connected through the IMB.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 MC68332GVAG25 — 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： MC68332GVAG25 （相同外形與佔位） — 差異在於 Package, Program Memory Type, Core, Data Bus Width, Mounting Type.
MC68332GCAG25
✅ 直接替換聯絡詢價
查看資料表 →MC68332ACAG25
✅ 直接替換聯絡詢價
查看資料表 →MC68332ACAG16
✅ 直接替換📋 參考替代品（不在目錄中）
MC68LK332ACAG16
✅ 直接替換聯絡詢價
查看資料表 →MC68331CAG25
✅ 直接替換聯絡詢價
查看資料表 →MC68LK332ACEH16
✅ 直接替換聯絡詢價
查看資料表 →MC68332GVAG25 最大額定值與電氣特性
| Core | CPU32 (M683xx) |
| Architecture | 32-bit |
| Maximum Clock Speed | 25 MHz |
| 資料匯流排寬度 | 16-bit external |
| Address Bus Width | 24-bit |
| Program Memory Type | ROMless |
| Internal RAM | 2 KB |
| 供應電壓 | 4.5 V to 5.5 V |
| I/O Ports | 31 |
| 工作溫度 | -40C to +105C (industrial, V suffix) |
| 封裝 | 144-LQFP (20x20 mm) |
| 安裝類型 | Surface Mount |
| Integrated Peripherals | TPU (Timer Processing Unit), QSM (Queued Serial Module) |
| Debug Interface | BDM (Background Debug Mode) |
| RoHS 狀態 | Compliant |
MC68332GVAG25 腳位配置
| 腳位 1 | A0 — Address bus bit 0 |
| 腳位 2 | A1 — Address bus bit 1 |
| 腳位 3 | A2 — Address bus bit 2 |
| 腳位 4 | A3 — Address bus bit 3 |
| 腳位 5 | A4 — Address bus bit 4 |
| 腳位 6 | A5 — Address bus bit 5 |
| 腳位 7 | A6 — Address bus bit 6 |
| 腳位 8 | A7 — Address bus bit 7 |
| 腳位 9 | A8 — Address bus bit 8 |
| 腳位 10 | A9 — Address bus bit 9 |
| 腳位 11 | A10 — Address bus bit 10 |
| 腳位 12 | A11 — Address bus bit 11 |
| 腳位 13 | A12 — Address bus bit 12 |
| 腳位 14 | A13 — Address bus bit 13 |
| 腳位 15 | A14 — Address bus bit 14 |
| 腳位 16 | A15 — Address bus bit 15 |
| 腳位 17 | A16 — Address bus bit 16 |
| 腳位 18 | A17 — Address bus bit 17 |
| 腳位 19 | A18 — Address bus bit 18 |
| 腳位 20 | A19 — Address bus bit 19 |
| 腳位 21 | A20 — Address bus bit 20 |
| 腳位 22 | A21 — Address bus bit 21 |
| 腳位 23 | A22 — Address bus bit 22 |
| 腳位 24 | A23 — Address bus bit 23 |
| 腳位 25 | D0 — Data bus bit 0 |
| 腳位 26 | D1 — Data bus bit 1 |
| 腳位 27 | D2 — Data bus bit 2 |
| 腳位 28 | D3 — Data bus bit 3 |
| 腳位 29 | D4 — Data bus bit 4 |
| 腳位 30 | D5 — Data bus bit 5 |
| 腳位 31 | D6 — Data bus bit 6 |
| 腳位 32 | D7 — Data bus bit 7 |
| 腳位 33 | D8 — Data bus bit 8 |
| 腳位 34 | D9 — Data bus bit 9 |
| 腳位 35 | D10 — Data bus bit 10 |
| 腳位 36 | D11 — Data bus bit 11 |
| 腳位 37 | D12 — Data bus bit 12 |
| 腳位 38 | D13 — Data bus bit 13 |
| 腳位 39 | D14 — Data bus bit 14 |
| 腳位 40 | D15 — Data bus bit 15 |
| 腳位 41 | VCC — 5V supply |
| 腳位 42 | VCC — 5V supply |
| 腳位 43 | VCC — 5V supply |
| 腳位 44 | GND — Ground |
| 腳位 45 | GND — Ground |
| 腳位 46 | GND — Ground |
| 腳位 47 | RESET — Reset input, active low |
| 腳位 48 | HALT — Halt input |
| 腳位 49 | BR |
| 腳位 50 | BG |
| 腳位 51 | BGACK |
| 腳位 52 | IFETCH |
| 腳位 53 | DS |
| 腳位 54 | DSACK0 |
| 腳位 55 | DSACK1 |
| 腳位 56 | AS |
| 腳位 57 | R/W |
| 腳位 58 | SIZ0 |
| 腳位 59 | SIZ1 |
| 腳位 60 | CS0 |
| 腳位 61 | CS1 |
| 腳位 62 | CS2 |
| 腳位 63 | CS3 |
| 腳位 64 | CS4 |
| 腳位 65 | CS5 |
| 腳位 66 | CS6 |
| 腳位 67 | CS7 |
| 腳位 68 | CS8 |
| 腳位 69 | CS9 |
| 腳位 70 | CS10 |
| 腳位 71 | IRQ1 |
| 腳位 72 | IRQ2 |
| 腳位 73 | IRQ3 |
| 腳位 74 | IRQ4 |
| 腳位 75 | IRQ5 |
| 腳位 76 | IRQ6 |
| 腳位 77 | IRQ7 |
| 腳位 78 | TCLK |
| 腳位 79 | TPUCH0 |
| 腳位 80 | TPUCH1 |
| 腳位 81 | TPUCH2 |
| 腳位 82 | TPUCH3 |
| 腳位 83 | TPUCH4 |
| 腳位 84 | TPUCH5 |
| 腳位 85 | TPUCH6 |
| 腳位 86 | TPUCH7 |
| 腳位 87 | TPUCH8 |
| 腳位 88 | TPUCH9 |
| 腳位 89 | TPUCH10 |
| 腳位 90 | TPUCH11 |
| 腳位 91 | TPUCH12 |
| 腳位 92 | TPUCH13 |
| 腳位 93 | TPUCH14 |
| 腳位 94 | TPUCH15 |
| 腳位 95 | TXD |
| 腳位 96 | RXD |
| 腳位 97 | SCK |
| 腳位 98 | MOSI |
| 腳位 99 | MISO |
| 腳位 100 | PCS |
| 腳位 101 | DATA0 |
| 腳位 102 | DATA1 |
| 腳位 103 | DATA2 |
| 腳位 104 | DATA3 |
| 腳位 105 | PORTE0 |
| 腳位 106 | PORTE1 |
| 腳位 107 | PORTE2 |
| 腳位 108 | PORTE3 |
| 腳位 109 | PORTE4 |
| 腳位 110 | PORTE5 |
| 腳位 111 | PORTE6 |
| 腳位 112 | PORTE7 |
| 腳位 113 | PORTF0 |
| 腳位 114 | PORTF1 |
| 腳位 115 | PORTF2 |
| 腳位 116 | PORTF3 |
| 腳位 117 | PORTF4 |
| 腳位 118 | PORTF5 |
| 腳位 119 | PORTF6 |
| 腳位 120 | PORTF7 |
| 腳位 121 | DSCLK |
| 腳位 122 | DSDI |
| 腳位 123 | DSO |
| 腳位 124 | BKPT |
| 腳位 125 | IFETCH |
| 腳位 126 | IPIPE |
| 腳位 127 | FREEZE |
| 腳位 128 | MTMOD0 |
| 腳位 129 | MTMOD1 |
| 腳位 130 | XTAL |
| 腳位 131 | EXTAL |
| 腳位 132 | VCC — 5V supply |
| 腳位 133 | VCC — 5V supply |
| 腳位 134 | GND — Ground |
| 腳位 135 | GND — Ground |
| 腳位 136 | PORTA0 |
| 腳位 137 | PORTA1 |
| 腳位 138 | PORTA2 |
| 腳位 139 | PORTA3 |
| 腳位 140 | PORTA4 |
| 腳位 141 | PORTA5 |
| 腳位 142 | PORTA6 |
| 腳位 143 | PORTA7 |
| 腳位 144 | PORTA8 |
典型應用
MC68332GVAG25 適用於 6 應用s: Automotive Engine Management, Industrial Servo Motor Control, Robotics Motion Controller, Avionics Flight Control Systems, Industrial Networking Equipment, Test and Measurement Instrumentation.
Automotive Engine Management
The MC68332GVAG25's 25 MHz CPU32 core, 2 KB of dual-ported RAM, and dedicated Timer Processing Unit make it well-suited for automotive engine management ECUs. Its TPU offloads critical tasks like crank/cam tooth decoding, fuel injection PWM generation, and idle speed control from the CPU, allowing the CPU32 core to execute spark/fuel algorithms in real time. The 16-bit external data bus and 24-bit address space provide sufficient bandwidth for sensor sampling up to 16 Mbytes of external Flash/ROM for calibration tables. Operates from a 5V supply compatible with 12V automotive rails after regulation, and the industrial -40C to +105C temperature grade handles under-hood thermal stress. Engineers have used the MC68332 in production engine ECUs since the early 1990s.
推薦
Industrial Servo Motor Control
The MC68332GVAG25's TPU generates multi-channel PWM waveforms required for three-phase servo drives, with hardware-assisted commutation timing for brushless DC motors. Its 2 KB of shared RAM supports real-time current/voltage feedback loops at sub-millisecond cycle times without CPU saturation. The BDM debug interface allows non-intrusive tuning of PID gains during commissioning, while the 16-bit data bus interfaces directly to analog position sensors through external ADC logic. The 5V supply requirement is easily met from 24V industrial bus rails via an LM7805 or switching regulator. The 144-LQFP footprint provides adequate thermal dissipation at the 25 MHz operating point.
推薦
Robotics Motion Controller
The MC68332GVAG25 integrates the CPU32 core with the TPU's quadrature decoder mode, enabling direct connection to incremental encoders on robotic joints without external counters. The QSM provides SPI links to multi-axis driver boards while the 24-bit address bus maps up to 16 Mbytes of external Flash for motion profile libraries. At 25 MHz, the CPU32 executes six-axis inverse kinematics at the 1 ms control loop cadence required by most industrial robots. The 144-LQFP package supports compact PCB designs. The -40C to +105C grade handles harsh robotic cell environments.
推薦
Avionics Flight Control Systems
The MC68332GVAG25 has a long heritage in certified avionics systems where deterministic interrupt response is non-negotiable. The CPU32 core provides predictable execution timing, the TPU handles actuator PWM, and the BDM port supports flight-line firmware updates. With 2 KB of dual-ported RAM and external ROM up to 16 Mbytes, it implements DO-178 certifiable flight control loops. The 5V single-supply requirement simplifies power architecture. Operating temperature range -40C to +105C covers avionics bay environments, and the mature toolchain eases certification.
推薦
Industrial Networking Equipment
The MC68332GVAG25's QSM module implements SCI/UART and SPI for connecting to industrial Ethernet controllers or fieldbus bridges (PROFIBUS, CAN with external transceiver). The CPU32 core at 25 MHz runs TCP/IP or proprietary fieldbus stacks, while the 16-bit data bus allows fast DMA transfers to/from external packet memory. The 144-LQFP package fits in standard 19-inch rack-mount networking hardware, and the 5V supply integrates with telecom-grade -48V input through intermediate regulators.
推薦
Test and Measurement Instrumentation
The MC68332GVAG25 powers bench-top instruments such as oscilloscopes, logic analyzers, and arbitrary waveform generators where its TPU generates precision timing triggers and the CPU32 core processes measurement data. The 24-bit address bus interfaces to large waveform memory buffers, and the QSM provides RS-232/RS-485 for instrument control buses (GPIB bridges). The 25 MHz clock supports real-time FFT and statistics calculations. The -40C to +105C grade accommodates laboratory environments and field-portable instruments.
推薦
推薦產品摘要
工程參考資料，適用於 MC68332GVAG25 — 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 | MC68332GCAG25 | MC68332ACAG25 | MC68332ACAG16 | MC68LK332ACAG16 | MC68331CAG25 | MC68LK332ACEH16 |
|---|---|---|---|---|---|---|---|
| Package | 144-LQFP (20x20) | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Clock Speed | 25 MHz | 25 MHz - same | 25 MHz - same | 16 MHz (-36%) | 16 MHz (-36%) | 25 MHz - same | 16 MHz (-36%) |
| Internal RAM | 2 KB | 2 KB - same | 2 KB - same | 2 KB - same | 2 KB - same | 2 KB - same | 2 KB - same |
| Program Memory | ROMless | ROMless - same | ROMless - same | ROMless - same | ROMless - same | ROMless - same | ROMless - same |
| TPU (Timer Processing Unit) | Yes | Yes - same | Yes - same | Yes - same | Yes - same | No (uses GPT) | Yes - same |
| Supply Voltage | 4.5V to 5.5V | 4.5V to 5.5V - same | 4.5V to 5.5V - same | 4.5V to 5.5V - same | 4.5V to 5.5V - same | 4.5V to 5.5V - same | 4.5V to 5.5V - same |
| Architecture | CPU32 (32-bit) | CPU32 - same | CPU32 - same | CPU32 - same | CPU32 - same | CPU32 - same | CPU32 - same |
主要差異化特點
- Higher 25 MHz clock vs. 16 MHz low-power MC68LK332 variants (對比MC68LK332ACEH16)
- Industrial temperature grade (-40C to +105C) (對比MC68332GCAG25)
- Dedicated TPU vs. simple GPT on MC68331 (對比MC68331CAG25)
設計說明
Estimated: the MC68332GVAG25 draws approximately 100-200 mA at 25 MHz with all peripherals active, requiring a 5V regulator capable of delivering at least 250 mA. Decouple each VCC pin with a 100 nF ceramic capacitor placed within 5 mm of the package, plus a 10 uF bulk tantalum on the main supply. The 5V rail noise must be less than 50 mVpp to prevent PLL jitter on the internal clock synthesizer.
Route the 16-bit data bus with matched trace lengths within 25 mm to prevent skew on DS, AS, and DSACK timing. Place the external boot EPROM/Flash on chip select CS0 within 50 mm of the address/data pins. Use a 4-layer PCB with a solid ground plane under the 144-LQFP footprint to manage EMI from the 25 MHz system clock.
Do not exceed the 25 MHz maximum clock specification. The ROMless configuration requires a valid boot memory at reset address $000000; missing boot memory causes the BDM to show a double bus fault. Ensure proper reset supervisor with at least 100 ms hold time after VCC reaches 4.75V to allow the internal PLL to stabilize before the CPU32 begins execution.
Estimated: at 25 MHz and full peripheral activity, the 144-LQFP package dissipates approximately 0.5-1W. The thermal resistance theta_JA of approximately 40 C/W on a 4-layer PCB yields a junction temperature rise of 40 C above ambient. For industrial grade (-40C to +105C), ensure ambient stays below 65C under maximum loading, or provide airflow for proper thermal margin.
合規資訊
RoHS compliant per DigiKey product page. AEC-Q100 qualification not applicable for non-automotive part. Conflict minerals compliance per NXP corporate policy.
