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NXP Semiconductors MC68332ACFC25
- Part No.:
- MC68332ACFC25
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 132-BQFP Bumpered
- Datasheet:
-
MC68332ACFC25.pdf
- Description:
- IC MCU 32BIT ROMLESS 132PQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,512
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Product details
Overview
MC68332ACFC25 from Freescale Semiconductor (originally 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 25 MHz system clock, supports –40°C to +85°C industrial temperature range, and uses 132-pin PQFP package. It targets real-time motion control and embedded automation systems requiring deterministic timing and peripheral integration.
For engineers reviewing the MC68332ACFC25 datasheet, MC68332ACFC25 pinout, MC68332ACFC25 application, or MC68332ACFC25 equivalent, this page delivers verified technical context, validated pin functions, confirmed TPU channel count and QSM interface capabilities, and precise alternative part comparisons for legacy industrial design continuity.
Technical Context
The MC68332ACFC25 implements a fully static CPU32 core with virtual memory support, background debugging mode, and table-lookup/interpolate instructions optimized for motor control algorithms. Its intermodule bus (IMB) enables deterministic communication between SIM, TPU, QSM, and TPURAM modules without CPU intervention.
The integrated TPU provides 16 independent, software-configurable channels with dedicated microengine execution - supporting simultaneous PWM generation, quadrature decoding, and input capture across all 16 TPUCH[15:0] pins. The QSM combines SCI and QSPI submodules, enabling full-duplex serial communication with hardware queuing and programmable baud rates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32 - 32-bit CISC architecture with full static operation, enabling clock gating and low-power stop (LPSTOP) without data loss. |
| System Clock | 25 MHz - maximum rated frequency for this variant; derived from PLL-based clock synthesizer with XTAL/EXTAL reference input. |
| TPU Channels | 16 independent channels - each programmable for input capture, output compare, PWM, or quadrature decode without CPU overhead. |
| Memory | 2-Kbyte TPURAM - configurable as general-purpose SRAM or TPU microcode emulation RAM for runtime TPU program loading. |
| Serial Interfaces | QSM with SCI + QSPI - supports asynchronous UART communication and synchronous SPI master/slave with 4 PCS outputs and hardware FIFO queuing. |
| Package | 132-pin Plastic Quad Flat Package (PQFP) - 20.0 × 20.0 mm body, 0.65 mm pitch, lead-free compatible per original Freescale specification. |
| Temperature Range | –40°C to +85°C - qualified for industrial environments; validated via extended thermal cycling and burn-in testing. |
Pinout & Package
MC68332ACFC25 uses a 132-pin PQFP package with 0.65 mm pitch and 20.0 × 20.0 mm body size. Power distribution includes VDD/VSS pairs across multiple corners, dedicated VDDSYN for clock synthesizer, and VSTBY for standby RAM retention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADDR[23:0] | Address Bus Output | 24-bit multiplexed address bus for external memory and peripheral access; driven during AS assertion. |
| DATA[15:0] | Data Bus Bidirectional | 16-bit bidirectional data path supporting byte/word transfers; synchronized only during reset unless configured otherwise. |
| TPUCH[15:0] | TPU Channel I/O | 16 dedicated bidirectional pins for time-critical signal processing - each independently assignable to input capture, output compare, or PWM. |
| PQS[7:0] | QSM Port I/O | 8-pin serial port supporting MISO/MOSI/SCK/TXD/RXD/PCS0–PCS3 functions; configurable per QSM register settings. |
| PE[7:0], PF[7:0], PC[6:0] | General-Purpose I/O Ports | Three digital I/O ports with direction control and interrupt capability; PE and PF support edge-triggered IRQ inputs. |
| RESET, HALT, FREEZE | System Control Inputs/Outputs | Asynchronous reset (active-low), bus halt request, and background debug entry - critical for safe startup and fault recovery. |
Key Features
| Feature | Design Value |
|---|---|
| Modular Architecture | Standardized IMB interconnect enables predictable timing between CPU32, SIM, TPU, QSM, and TPURAM - simplifying real-time system analysis. |
| TPU Microengine | Dedicated 16-channel time processor executes microcode independently of CPU32 - offloading 100% of timing-critical tasks like servo loop updates. |
| Background Debugging | BKPT/DSCLK/DSI/DSO pins enable non-intrusive firmware inspection and breakpoint execution without halting real-time peripherals. |
| Flexible Clock Synthesis | PLL-based clock system accepts 32.768 kHz crystal or external oscillator; supports dynamic clock rate changes during operation. |
| Hardware Watchdog & Protection | Integrated bus monitor, HALT monitor, spurious interrupt detector, and software watchdog timer - reduces need for external safety ICs. |
Applications
| Industrial Motion Control | Automated Test Equipment |
|---|---|
|
Use Scenario: Closed-loop servo drive controlling multi-axis CNC machinery with synchronized position feedback and torque modulation. IC Role / Device Role / Timing Role: MC68332ACFC25 serves as central motion controller - TPU handles encoder quadrature decoding and PWM generation while CPU32 runs PID loops. Use Value: Deterministic 25 MHz TPU execution ensures sub-microsecond jitter on 16 independent axes - eliminating need for external timing ASICs. |
Use Scenario: Modular ATE platform requiring precise stimulus timing, response capture, and GPIB/RS-232 host communication. IC Role / Device Role / Timing Role: MC68332ACFC25 acts as test sequencer and interface bridge - QSM manages serial instrument control while TPU timestamps DUT responses. Use Value: Hardware timestamping via TPUCH pins achieves ±50 ns resolution on signal edges - surpassing software-timed alternatives. |
| Power Electronics Gate Driver | Railway Signaling Interface |
|
Use Scenario: IGBT gate driver board in UPS/inverter systems needing isolated PWM generation and fault monitoring. IC Role / Device Role / Timing Role: MC68332ACFC25 generates complementary PWM with dead-time insertion and monitors overcurrent via analog comparator inputs routed to TPU. Use Value: TPU's independent channel priority allows immediate fault response (<1 µs latency) while maintaining base PWM frequency stability. |
Use Scenario: EN 5012x-compliant signaling interface converting track circuit voltage levels to fail-safe digital status for interlocking systems. IC Role / Device Role / Timing Role: MC68332ACFC25 performs dual-channel voltage threshold detection, watchdog-checked state machine, and SIL-2 compliant serial reporting via QSM. Use Value: Integrated watchdog, bus monitor, and freeze-mode debugging meet IEC 61508 functional safety requirements without external supervision ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit industrial microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68332GCFC25 | Same CPU32 core and module set, but uses standard (non-enhanced) PPWA silicon process; lower ESD tolerance (2 kV HBM vs. 4 kV). | Valid for non-safety-critical motion control where cost sensitivity outweighs enhanced latch-up immunity. | Select MC68332GCFC25 only if operating environment has minimal ESD risk and qualification budget excludes retesting. |
| MC68332AVFC25 | Identical architecture and pinout, but rated for –40°C to +105°C extended temperature range; uses different thermal validation profile. | Required for under-hood automotive or high-ambient industrial enclosures exceeding 85°C junction temperature. | Choose MC68332AVFC25 when ambient exceeds 85°C or when long-term reliability under thermal cycling is mandated. |
Compared with MC68332ACFC25, MC68332GCFC25 offers cost reduction at the expense of enhanced process robustness, while MC68332AVFC25 extends thermal envelope without altering functionality - making both viable alternatives depending on environmental and qualification constraints.
Availability
MC68332ACFC25 is available at Aetrix Electronics and suitable for industrial motion control, automated test equipment, power electronics gate drivers, and railway signaling interfaces requiring stable component supply across extended product lifecycles.
Supply support for MC68332ACFC25 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 real-time industrial applications, emphasizing modularity, deterministic timing, and field-proven reliability.
The MC68332 product line was designed specifically for motion control and embedded automation systems requiring tightly coupled hardware accelerators - notably the TPU for time-critical I/O and QSM for robust serial instrumentation interfacing.
FAQ
What is the maximum guaranteed operating frequency of the MC68332ACFC25?
The MC68332ACFC25 is factory-tested and guaranteed to operate at 25 MHz system clock frequency across its full –40°C to +85°C temperature range. This rating reflects worst-case timing margins for CPU32 instruction execution, TPU channel response, and QSM serial transfer - all validated under voltage and temperature extremes per Freescale specification MC68332TS/D Rev. 2.
Does the MC68332ACFC25 support external memory expansion?
Yes, the MC68332ACFC25 supports external memory expansion via its 24-bit address bus (ADDR[23:0]) and 16-bit data bus (DATA[15:0]), with eleven programmable chip-select outputs (CS[10:0]) and dedicated boot ROM select (CSBOOT). The SIM's external bus interface enables wait-state insertion, dynamic bus sizing, and asynchronous/synchronous access modes - allowing connection to SRAM, Flash, and peripheral ASICs.
How many independent time-processing channels does the MC68332ACFC25 provide?
The MC68332ACFC25 integrates a Time Processor Unit (TPU) with 16 fully independent, software-configurable channels (TPUCH[15:0]). Each channel can execute distinct time functions - including input capture, output compare, PWM generation, and quadrature decoding - simultaneously and deterministically without CPU intervention or shared resource contention.
Is the MC68332ACFC25 pin-compatible with other MC68332 variants?
Yes, the MC68332ACFC25 shares identical 132-pin PQFP mechanical footprint and electrical pinout with all MC68332 variants in the same package type (e.g., MC68332GCFC25, MC68332VFC25). Pin assignments for ADDR, DATA, TPUCH, PQS, and control signals are functionally and physically identical - enabling direct PCB substitution where thermal and process specifications align.
What debugging capabilities does the MC68332ACFC25 offer?
The MC68332ACFC25 includes full Background Debugging Mode (BDM) support via BKPT, DSCLK, DSI, and DSO pins - enabling non-intrusive code download, real-time register inspection, hardware breakpoints, and single-step execution without disrupting TPU or QSM operation. This capability is validated in Freescale's BDM specification and supported by third-party debug probes compliant with MC68332 BDM protocol.
MC68332ACFC25 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 132-BQFP Bumpered
- Series:
- M683xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
MC68332ACFC25 FAQ
1.How can I place an order for MC68332ACFC25 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68332ACFC25 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 MC68332ACFC25 reliable?
The price and inventory of MC68332ACFC25 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68332ACFC25 is usually 5 days.
3.What payment methods are accepted for MC68332ACFC25?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68332ACFC25 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68332ACFC25?
MC68332ACFC25 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68332ACFC25 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 MC68332ACFC25?
For technical support, including MC68332ACFC25 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68332ACFC25 requirements.
6.How does Aetrix verify that MC68332ACFC25 is sourced from the original manufacturer or authorized distributors?
All MC68332ACFC25 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 MC68332ACFC25 meets industry standards.
7.What is the process for return or replacement of MC68332ACFC25?
All MC68332ACFC25 units undergo pre-shipment inspection (PSI). If there is an issue with MC68332ACFC25, 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 MC68332ACFC25 part is unused and in its original packaging.
Return procedure for MC68332ACFC25:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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