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NXP Semiconductors SC68376BACAB20
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- Part No.:
- SC68376BACAB20
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 160-BQFP
- Datasheet:
-
SC68376BACAB20.pdf
- Description:
- IC MCU 32BIT ROMLESS 160QFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,837
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Product details
Overview
SC68376BACAB20 from NXP Semiconductors (formerly Motorola) is a 16-bit microcontroller unit (MCU) featuring an integrated Time Processing Unit (TPU), 20.97 MHz CPU clock, CAN 2.0A/B controller, 160-pin QFP package, and industrial temperature range (–40 to +85 °C). It serves as a real-time control engine in automotive powertrain and industrial motion systems requiring deterministic I/O timing and robust serial communication.
For engineers reviewing the SC68376BACAB20 datasheet, SC68376BACAB20 pinout, SC68376BACAB20 application, or SC68376BACAB20 equivalent, key selection criteria include TPU channel count (16-channel), CAN interface presence, ROM blank configuration for customer firmware, QFP-160 mechanical compatibility, and operating voltage range (VDD = 5 V).
Technical Context
The SC68376BACAB20 implements the M68300 core architecture with Harvard-style instruction/data buses, on-chip 32 KB ROM (blank), 2 KB RAM, and a dedicated 16-channel TPU for high-precision waveform generation and input capture. Its memory map supports up to 16 MB address space via external bus interface with programmable chip select logic and burst-mode data transfer capability.
It integrates dual serial interfaces: a full-duplex UART (RXD/TXD) and a synchronous SPI (MOSI/MISO/SCK/PCS0–PCS3), plus a CAN 2.0A/B-compliant controller with two message buffers and programmable bit timing. The analog subsystem includes 16-channel 10-bit ADC with internal reference (VRH/VRL) and sample-and-hold circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M68300 16-bit CISC architecture with 32-bit ALU and 24-bit address bus |
| Max Clock Frequency | 20.97 MHz - determines real-time interrupt latency and TPU resolution (47.7 ns per cycle) |
| Memory | 32 KB blank ROM (customer-programmable), 2 KB SRAM, external bus supporting up to 16 MB |
| TPU Channels | 16 independent channels with 32-bit timers, input capture, output compare, and PWM generation |
| CAN Interface | One CAN 2.0A/B controller with two dedicated message buffers and programmable bit timing registers |
| Analog Input | 16-channel 10-bit ADC with internal voltage reference (VRH/VRL) and sample-and-hold |
| Package | 160-pin QFP (Case 864A-03), 28.0 × 28.0 mm body, 0.65 mm pitch, lead-free compatible |
Pinout & Package
SC68376BACAB20 is housed in a 160-pin plastic quad flat pack (QFP) per Case 864A-03 mechanical standard: 28.0 × 28.0 mm body size, 0.65 mm lead pitch, and 1.4 mm maximum height. Pin 1 is NC (no connect); pin 160 is NC - ensuring pin compatibility with MC68336 Revision D+ devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CANRX0 | CAN Controller Receive Input | Differential CAN bus input (dominant/recessive level detection) tied to internal CAN transceiver interface |
| CANTX0 | CAN Controller Transmit Output | Open-drain output driving external CAN transceiver; requires external pull-up for recessive state |
| XTAL / EXTAL | Crystal Oscillator Inputs | Drive internal oscillator circuit with 4–20 MHz crystal; EXTAL may accept external clock source |
| VDD / VSS | Power Supply / Ground | 5 V digital supply (VDD) and ground (VSS); separate VDDA/VSSA pins for analog section reduce noise coupling |
| ADDR0–ADDR23 | External Address Bus | 24-bit multiplexed address lines supporting 16 MB linear addressing with CS0–CS10 chip selects |
| DATA0–DATA15 | External Data Bus | 16-bit bidirectional data path with DS, AS, R/W, and SIZ0/SIZ1 for burst and byte/word access control |
Key Features
| Feature | Design Value |
|---|---|
| Time Processing Unit (TPU) | 16 independent channels with 32-bit resolution, programmable input capture edges, and PWM dead-time insertion for motor control |
| CAN 2.0A/B Controller | Integrated protocol engine with two message buffers, automatic retransmission, and error confinement - eliminates need for external CAN controller |
| External Bus Interface | Configurable 16-bit data/24-bit address bus with 11 chip selects, programmable wait states, and burst-mode support for external flash or SDRAM |
| 10-bit Analog-to-Digital Converter | 16-channel SAR ADC with internal reference (VRH/VRL), sample-and-hold, and conversion time ≤12 μs per channel |
| Interrupt Architecture | 8-level priority vectored interrupt system with AVEC (Automatic Vector Entry Code) for fast context switching in real-time tasks |
Applications
| Automotive Engine Control | Industrial Servo Drive |
|---|---|
Use Scenario: Real-time spark timing, fuel injection pulse width modulation, and knock sensor signal processing in gasoline engines. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop combustion control algorithms with sub-microsecond TPU timing precision. Use Value: 16-channel TPU enables simultaneous management of 4 cylinder ignition events and 4 injector drivers with synchronized dead-time control. |
Use Scenario: Position loop closure, current sensing, and PWM gate drive for 3-phase BLDC motors in CNC machine axes. IC Role / Device Role / Timing Role: Motion controller coordinating ADC sampling, PID computation, and 6-channel complementary PWM output with hardware synchronization. Use Value: Integrated CAN interface allows direct connection to higher-level PLCs without protocol translation hardware. |
| Heavy-Duty Vehicle Telematics | Factory Automation I/O Module |
Use Scenario: J1939-compliant data aggregation from engine, transmission, and braking ECUs in Class 8 trucks. IC Role / Device Role / Timing Role: Gateway MCU routing CAN messages between multiple networks while logging fault codes to external EEPROM. Use Value: Blank ROM enables OEM-specific J1939 stack implementation; external bus supports parallel EEPROM and FRAM for nonvolatile event storage. |
Use Scenario: Distributed digital I/O expansion node with local logic execution and fieldbus connectivity in modular PLC racks. IC Role / Device Role / Timing Role: Intelligent peripheral controller handling 32-channel opto-isolated inputs and relay outputs with deterministic scan timing. Use Value: 160-pin QFP provides sufficient GPIO (via PE/PC/PF port banks) and dedicated TPU channels for precise input debouncing and output pulse shaping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68376BGCFT20 | Same core, package, and TPU; differs only in mask ROM version (G-grade vs. A-grade silicon revision) | Identical functional scope; G-grade offers extended qualification for harsher environments (e.g., under-hood automotive) | Select MC68376BGCFT20 if operating ambient exceeds +85 °C or vibration/shock requirements exceed standard industrial spec. |
| MC68336ACFT20 | Lacks CAN controller; identical TPU, memory map, and QFP-160 pinout except CANRX0/CANTX0 replaced by NC | Suitable for non-networked real-time control (e.g., standalone motor drives without diagnostics bus) | Choose MC68336ACFT20 when CAN is unnecessary and cost reduction is prioritized over future network upgradeability. |
Compared with SC68376BACAB20, MC68376BGCFT20 delivers enhanced reliability for extended temperature operation, while MC68336ACFT20 reduces BOM cost by omitting CAN hardware - both retain full TPU and external bus compatibility for drop-in reuse of PCB layout and firmware modules.
Availability
SC68376BACAB20 is available at Aetrix Electronics and suitable for automotive powertrain control, industrial servo drives, heavy-duty vehicle telematics, and factory automation I/O modules requiring stable component supply across long production lifecycles.
Supply support for SC68376BACAB20 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
NXP Semiconductors, formerly Motorola Semiconductor, designs high-reliability microcontrollers for automotive, industrial, and aerospace applications with emphasis on real-time performance and functional safety.
The MC68376 product line was engineered for deterministic embedded control in electrically noisy environments, integrating TPU, CAN, and external bus capabilities into a single chip to replace multi-chip legacy designs in engine control units and motion controllers.
FAQ
What is the operating voltage range for SC68376BACAB20?
The SC68376BACAB20 operates at a nominal 5 V supply (VDD), with specified tolerance of 4.5 V to 5.5 V. Its analog section uses separate VDDA/VSSA pins to isolate sensitive ADC circuitry from digital switching noise - critical for maintaining 10-bit accuracy in automotive and industrial settings where SC68376BACAB20 is deployed.
Does SC68376BACAB20 include on-chip flash or ROM?
SC68376BACAB20 contains 32 KB of mask-programmed ROM that is blank (unprogrammed) at shipment, allowing customers to load proprietary firmware during manufacturing. It does not include flash memory; program updates require external programming equipment and ROM mask revision cycles - a design choice aligned with long-lifecycle automotive applications where SC68376BACAB20 is commonly used.
Is SC68376BACAB20 pin-compatible with other MC68376 variants?
Yes, SC68376BACAB20 shares identical 160-pin QFP pinout and mechanical footprint with all MC68376 family members including MC68376BGCFT20 and MC68376BAVFT20. Pin 1 and pin 160 are NC on all A- and G-grade revisions, ensuring PCB layout reuse across temperature grades and mask versions - a key advantage for SC68376BACAB20 in scalable industrial product families.
What peripherals are integrated into SC68376BACAB20?
SC68376BACAB20 integrates a 16-channel Time Processing Unit (TPU), CAN 2.0A/B controller, 16-channel 10-bit ADC, UART, SPI, and a full external bus interface with 24-bit addressing. These peripherals enable SC68376BACAB20 to serve as a self-contained controller in applications like engine management and servo drives without requiring external glue logic or companion ICs.
What is the maximum ambient temperature rating for SC68376BACAB20?
SC68376BACAB20 is rated for industrial temperature operation from –40 °C to +85 °C. This specification is confirmed in Table B-2 of the MC68376 ordering information document, where "A" grade denotes the standard industrial range - making SC68376BACAB20 suitable for under-hood automotive modules and factory-floor control cabinets where thermal management is constrained.
SC68376BACAB20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 160-BQFP
- Series:
- M683xx
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- CPU32
- Core Size:
- 32-Bit Single-Core
- Speed:
- 20MHz
- Connectivity:
- CANbus, EBI/EMI, SCI, SPI
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 18
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 7.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.75V ~ 5.25V
- Data Converters:
- A/D 16x10b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
SC68376BACAB20 FAQ
1.How can I place an order for SC68376BACAB20 through Aetrix?
Please submit a Request for Quotation (RFQ) for SC68376BACAB20 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 SC68376BACAB20 reliable?
The price and inventory of SC68376BACAB20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC68376BACAB20 is usually 5 days.
3.What payment methods are accepted for SC68376BACAB20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC68376BACAB20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC68376BACAB20?
SC68376BACAB20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC68376BACAB20 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 SC68376BACAB20?
For technical support, including SC68376BACAB20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC68376BACAB20 requirements.
6.How does Aetrix verify that SC68376BACAB20 is sourced from the original manufacturer or authorized distributors?
All SC68376BACAB20 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 SC68376BACAB20 meets industry standards.
7.What is the process for return or replacement of SC68376BACAB20?
All SC68376BACAB20 units undergo pre-shipment inspection (PSI). If there is an issue with SC68376BACAB20, 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 SC68376BACAB20 part is unused and in its original packaging.
Return procedure for SC68376BACAB20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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