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NXP Semiconductors MC68332GCEH25
- Part No.:
- MC68332GCEH25
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 132-BQFP Bumpered
- Datasheet:
-
MC68332GCEH25.pdf
- Description:
- IC MCU 32BIT ROMLESS 132PQFP
- Quantity:
- Payment:
- Shipping:
Inventory:249
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Product details
Overview
MC68332GCEH25 from Freescale Semiconductor (formerly Motorola) is a 32-bit modular microcontroller featuring CPU32 core, System Integration Module (SIM), Time Processor Unit (TPU), Queued Serial Module (QSM), and 2-Kbyte TPURAM. It operates at up to 25 MHz system clock, supports –40°C to +85°C industrial temperature range, and integrates 16 TPU channels for real-time motion control tasks in motor drives and industrial automation systems.
For engineers reviewing the MC68332GCEH25 datasheet, MC68332GCEH25 pinout, MC68332GCEH25 application, or MC68332GCEH25 equivalent, this page delivers verified technical context, validated pin functions, confirmed timing specifications, and real-world use cases aligned with the original MC68332G family documentation and Freescale's official ordering data.
Technical Context
The MC68332GCEH25 implements a fully static CPU32 core with virtual memory support, background debugging mode, and table-lookup/interpolate instructions optimized for control algorithms. Its intermodule bus (IMB) enables deterministic communication between SIM, TPU, QSM, and TPURAM modules without CPU intervention.
System clocking uses a PLL-based synthesizer with MODCLK input selection, supporting external crystal (XTAL/EXTAL) or oscillator reference; the device achieves 25 MHz operation via internal frequency multiplication while maintaining full static operation across voltage and temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32 - 32-bit CISC architecture with full static operation, virtual memory, and background debug support |
| Max Clock Frequency | 25 MHz - Verified maximum system clock rate for MC68332GCEH25 variant per Freescale ordering data |
| Operating Temperature | –40°C to +85°C - Industrial-grade thermal range enabling deployment in motor control enclosures and PLCs |
| TPU Channels | 16 independent programmable channels - Enables simultaneous capture, compare, PWM, and quadrature decoding without CPU load |
| On-chip RAM | 2 Kbytes TPURAM - Configurable as general-purpose SRAM or TPU microcode emulation memory |
| Package Type | 132-pin PQFP (Plastic Quad Flat Package) - Standard surface-mount footprint with 0.65 mm pitch, compatible with automated assembly |
| Peripheral Integration | SIM, QSM (SCI + QSPI), TPU, TPURAM - Modular architecture allows hardware-accelerated I/O, serial comms, and time-critical processing in one die |
Pinout & Package
MC68332GCEH25 is housed in a 132-pin Plastic Quad Flat Package (PQFP) with 0.65 mm lead pitch. Pin assignments follow the standard MC68332 132-pin QFP layout documented in Freescale MC68332TS/D Rev. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADDR[23:0] | 24-bit address bus | Drives external memory or peripheral address lines; supports up to 16 MB address space |
| DATA[15:0] | 16-bit bidirectional data bus | Transfers instructions and data between MCU and external devices using multiplexed or non-multiplexed modes |
| AS, R/W, DS, DSACK[1:0] | External bus control signals | Enables asynchronous, dynamic bus sizing and handshaking for mixed-speed peripherals |
| TPUCH[15:0] | TPU channel I/O pins | 16 dedicated bidirectional pins for timer capture, compare output, PWM, and encoder interface |
| PQS[7:0] | Queued Serial Module port | Configurable as SCI (TXD/RXD) or QSPI (MISO/MOSI/SCK/PCS) with hardware FIFO queuing |
| PF[7:1], PE[7:0], PC[6:0] | General-purpose I/O ports | Three software-configurable digital I/O ports with direction registers and interrupt capability |
Key Features
| Feature | Design Value |
|---|---|
| Modular IMB Architecture | Standardized intermodule bus enables deterministic, low-latency communication between CPU32, SIM, TPU, and QSM without arbitration overhead |
| Hardware-Accelerated Timing | TPU executes time-critical functions (e.g., PWM generation, edge capture, pulse width measurement) autonomously-freeing CPU32 for higher-level tasks |
| Background Debugging Mode | DSI/DSO/DSCLK serial interface allows non-intrusive code download, breakpoint setting, and register inspection during live operation |
| Flexible Clock Synthesis | PLL-based clock generator accepts 32.768 kHz crystal or external clock; supports dynamic frequency scaling and low-power STOP mode |
| Integrated Peripheral Control | QSM combines SCI and QSPI with hardware queuing; SIM provides 11 chip selects, watchdog, periodic interrupt, and bus monitoring logic |
Applications
| Motion Control System | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Real-time servo motor positioning in CNC machines using quadrature encoder feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: MC68332GCEH25 acts as the central motion controller-TPU handles encoder counting and PWM timing; CPU32 runs PID loops and trajectory planning. Use Value: 16 TPU channels enable concurrent management of multiple axes; 25 MHz clock ensures sub-microsecond timing resolution for high-bandwidth current control loops. |
Use Scenario: Distributed I/O acquisition and control in factory-floor PLC backplanes with analog/digital signal conditioning and fieldbus interfacing. IC Role / Device Role / Timing Role: MC68332GCEH25 serves as the local intelligence node-QSM manages Modbus RTU over RS-485; SIM controls discrete I/O expansion ASICs via chip-selects. Use Value: Integrated QSPI and SCI reduce external component count; 2-Kbyte TPURAM buffers sensor data during communication bursts without CPU intervention. |
| Automated Test Equipment (ATE) | Power Converter Controller |
|
Use Scenario: Precision waveform generation and response capture in semiconductor test handlers requiring synchronized stimulus/response timing. IC Role / Device Role / Timing Role: MC68332GCEH25 functions as the timing engine-TPU generates precise trigger pulses and captures event timestamps; CPU32 correlates data streams. Use Value: TPU's 16-channel independence allows simultaneous triggering of multiple DUT pins and timestamping of pass/fail responses with nanosecond-level repeatability. |
Use Scenario: Digital control of isolated DC-DC converters in telecom power supplies, managing voltage regulation, fault protection, and thermal derating. IC Role / Device Role / Timing Role: MC68332GCEH25 operates as the digital power controller-TPU generates isolated gate drive signals; QSM communicates telemetry via PMBus. Use Value: Hardware TPU PWM outputs eliminate jitter from software-timed GPIO toggling; integrated watchdog and bus monitor ensure fail-safe shutdown during overvoltage or communication loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68332ACFV20 | 144-pin QFP package; same CPU32 core and TPU but rated for 20 MHz max clock and –40°C to +85°C | Limited to lower-frequency motion control where 25 MHz timing margin is unnecessary; larger footprint may impact PCB density | Select when board layout accommodates 144-pin QFP and 20 MHz performance suffices for control loop bandwidth requirements |
| MC9328MX1 | ARM920T core, 200 MHz, integrated LCD controller and USB OTG-but no TPU; requires software-based timing routines | Better suited for HMI-rich embedded Linux systems; lacks hardware-accelerated real-time I/O for motor control | Choose only if application prioritizes multimedia connectivity over deterministic sub-microsecond timing; not drop-in compatible |
Compared with MC68332ACFV20 and MC9328MX1, the MC68332GCEH25 uniquely delivers 25 MHz deterministic TPU execution in a compact 132-pin PQFP-making it irreplaceable for high-bandwidth industrial motion control where hardware-timed I/O is mandatory.
Availability
MC68332GCEH25 is available at Aetrix Electronics and suitable for industrial automation, motor control, and embedded test equipment requiring stable component supply, long-term lifecycle support, and verified legacy microcontroller compatibility.
Supply support for MC68332GCEH25 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Freescale Semiconductor (now part of NXP Semiconductors) pioneered high-integration microcontrollers for industrial control, delivering robust, long-lifecycle silicon for mission-critical embedded systems.
The MC68332GCEH25 belongs to the MC68332 family-designed specifically for deterministic real-time control applications requiring hardware-accelerated timing, modular peripheral integration, and industrial temperature resilience.
FAQ
What is the maximum operating frequency of the MC68332GCEH25?
The MC68332GCEH25 is rated for a maximum system clock frequency of 25 MHz, as confirmed by Freescale's official ordering information and electrical specifications. This rating applies across its full industrial temperature range (–40°C to +85°C) and is achieved using the on-chip PLL clock synthesizer with appropriate external crystal or oscillator input. The CPU32 core maintains full static operation at this speed, ensuring reliable timing behavior under varying supply and thermal conditions. MC68332GCEH25 does not require external clock dividers or multi-phase clocking to reach this performance level.
Does the MC68332GCEH25 include on-chip RAM, and how is it used?
Yes, the MC68332GCEH25 integrates 2 Kbytes of on-chip static RAM (TPURAM), which can be configured either as general-purpose SRAM for program/data storage or as TPU microcode emulation RAM for executing custom TPU microprograms. This dual-mode capability is controlled via the TPURAM control register block. Unlike external RAM, TPURAM offers zero-wait-state access and deterministic latency-critical for time-sensitive TPU operations. MC68332GCEH25's TPURAM is mapped at address $YFFA00 in the internal address space and is fully accessible to both CPU32 and TPU modules.
How many TPU channels does the MC68332GCEH25 support, and what functions do they perform?
The MC68332GCEH25 supports 16 independent, programmable TPU channels (TPUCH[15:0]), each capable of performing any supported time function-including input capture, output compare, PWM generation, quadrature decoding, pulse width measurement, and interval timing. These channels operate autonomously of the CPU32 core, using dedicated microengine resources and parameter RAM. Each channel has configurable priority levels and can trigger interrupts or DMA requests. MC68332GCEH25's TPU architecture eliminates CPU polling overhead and guarantees sub-microsecond timing precision for industrial motion control applications.
What package type and pin count does the MC68332GCEH25 use?
The MC68332GCEH25 is packaged in a 132-pin Plastic Quad Flat Package (PQFP) with 0.65 mm lead pitch, matching the standard MC68332 132-pin QFP footprint documented in Freescale's MC68332TS/D Rev. 2 datasheet. This package includes dedicated pins for ADDR[23:0], DATA[15:0], TPU I/O (TPUCH[15:0]), QSM signals (PQS[7:0]), and three general-purpose I/O ports (PC, PE, PF). MC68332GCEH25's pinout is electrically and mechanically compatible with other MC68332 variants in the same package family, enabling design reuse across speed grades.
Is the MC68332GCEH25 supported by modern development tools and debug interfaces?
Yes, the MC68332GCEH25 supports Background Debugging Mode (BDM) via the BKPT/DSCLK, DSI, and DSO pins-enabling non-intrusive code download, real-time register inspection, and hardware breakpoint setting using standard Freescale BDM debuggers (e.g., P&E Micro Cyclone PRO). While newer IDEs have reduced native support, legacy toolchains such as CodeWarrior for ColdFire v6.3 and GNU GCC-based toolchains with BDM firmware remain functional. MC68332GCEH25's BDM interface operates independently of the main CPU clock, allowing debugging even during low-power STOP mode-a key advantage for industrial field service.
MC68332GCEH25 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 132-BQFP Bumpered
- Series:
- M683xx
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- CPU32
- Core Size:
- 32-Bit Single-Core
- Speed:
- 25MHz
- Connectivity:
- EBI/EMI, SCI, SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 15
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68332GCEH25 FAQ
1.How can I place an order for MC68332GCEH25 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68332GCEH25 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC68332GCEH25 reliable?
The price and inventory of MC68332GCEH25 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68332GCEH25 is usually 5 days.
3.What payment methods are accepted for MC68332GCEH25?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68332GCEH25 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68332GCEH25?
MC68332GCEH25 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68332GCEH25 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC68332GCEH25?
For technical support, including MC68332GCEH25 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68332GCEH25 requirements.
6.How does Aetrix verify that MC68332GCEH25 is sourced from the original manufacturer or authorized distributors?
All MC68332GCEH25 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC68332GCEH25 meets industry standards.
7.What is the process for return or replacement of MC68332GCEH25?
All MC68332GCEH25 units undergo pre-shipment inspection (PSI). If there is an issue with MC68332GCEH25, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC68332GCEH25 part is unused and in its original packaging.
Return procedure for MC68332GCEH25:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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