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NXP Semiconductors DSP56F803BU80E
- Part No.:
- DSP56F803BU80E
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
DSP56F803BU80E.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,146
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Product details
Overview
DSP56F803BU80E from Freescale Semiconductor is a 16-bit digital signal controller (DSC) combining DSP and MCU functionality in a single chip, featuring an 80 MHz core clock, 31.5 KB program Flash, dual 12-bit ADCs with simultaneous sampling, six-channel PWM with dead-time control, and CAN 2.0B interface - deployed in motor control systems for brushless DC and AC induction motors.
For engineers reviewing the DSP56F803BU80E datasheet, DSP56F803BU80E pinout, DSP56F803BU80E application, or DSP56F803BU80E equivalent, key selection criteria include PWM fault protection timing, PLL lock stability at 80 MHz, analog supply rail decoupling (VDDA/VSSA), and JTAG/OnCE debug compatibility with CodeWarrior IDE.
Technical Context
The DSP56F803BU80E implements a dual-Harvard 56800E core with parallel MAC unit delivering up to 40 MIPS, hardware DO/REP loops, and 14 addressing modes optimized for C-compiled control code. Its memory architecture supports concurrent access to 31.5 KB Flash (program), 4 KB Data Flash, and 2 KB Boot Flash - all programmable via JTAG.
Peripheral integration includes two synchronized 12-bit ADCs (1.25 µs conversion time), a six-output PWM module with three complementary pairs, integrated quadrature decoder, SCI/SPI interfaces, and a full CAN 2.0B controller with dedicated TX/RX pins - all mapped to a 100-pin LQFP package with shared GPIO functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit 56800E dual-Harvard CPU with 36-bit MAC, two 36-bit accumulators, and hardware loop support |
| Max Core Frequency | 80 MHz - enables 40 MIPS real-time execution for closed-loop motor control at ≤20 kHz PWM carrier |
| Program Memory | 31.5 KB Flash - sufficient for field-upgradable motion control firmware with CRC-protected boot loader |
| PWM Outputs | 6 channels (3 complementary pairs) - supports 3-phase inverter gate drive with programmable dead time and distortion correction |
| ADC System | Two independent 12-bit ADCs, 1.25 µs conversion, synchronized trigger from PWM - enables precise current sensing per switching cycle |
| CAN Interface | CAN 2.0B-compliant controller with dedicated TX/RX pins - supports real-time motor status reporting and networked drive coordination |
| Supply Voltage | 3.0–3.6 V - requires separate low-noise 3.3 V digital and analog rails (VDD/VDDA) with dedicated bypass capacitors |
Pinout & Package
Package: 100-pin Low Profile Plastic Quad Flat Pack (LQFP), 14 mm × 14 mm, 0.5 mm pitch, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (×6), VDDA (×1) | Digital & analog power supply inputs | Require individual 0.01–0.1 µF ceramic bypass caps placed ≤0.5 inch from each pin; VDDA must be isolated low-noise rail |
| VSS (×5), VSSA (×1), TCS | Digital & analog ground returns | TCS is factory-reserved Schmitt input tied to VSS; VSSA must be star-grounded near ADC reference pins |
| VCAPC (×2) | Core regulator bypass terminals | Must connect ≥2.2 µF low-ESR capacitor (≤150 mΩ) directly to each pin for stable internal voltage regulation |
| PWMA0–PWMA5 | PWM output drivers | Support edge- or center-aligned modulation; outputs drive opto-isolators directly; fault-disable response <100 ns |
| ISA0–ISA2, FAULTA0–FAULTA2 | Current sense & fault monitoring inputs | Schmitt-triggered inputs for cycle-by-cycle overcurrent detection and automatic PWM shutdown |
| MSCAN_TX, MSCAN_RX | CAN bus transceiver interface | Dedicated differential pair - requires external CAN transceiver (e.g., MC33388) and 120 Ω termination |
Key Features
| Feature | Design Value |
|---|---|
| Patented PWM dead-time distortion correction | Compensates for gate driver propagation mismatch using software-controlled current-sense feedback - eliminates torque ripple in BLDC commutation |
| Synchronized ADC-PWM triggering | Hardware link allows ADC sampling aligned to PWM center point - critical for accurate phase current reconstruction in FOC algorithms |
| Boot Flash with write-once protection | 2 KB dedicated memory space for secure bootloader storage - prevents accidental overwrite during field firmware updates |
| Quadrature decoder with motion timeout | Integrated 4-input decoder with programmable watchdog timer - detects stalled motor shafts and triggers safety shutdown |
| JTAG/OnCE debug interface | Full-speed, non-intrusive debugging at full 80 MHz operation - supports real-time trace, breakpoints, and register inspection without halting control loops |
Applications
| Industrial Motor Drives | Smart Appliance Control |
|---|---|
Use Scenario: Closed-loop vector control of 3-phase PMSM motors in HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Real-time execution of Field-Oriented Control (FOC) algorithm with 20 kHz PWM carrier, synchronized current sampling, and CAN-based supervisory communication. Use Value: Enables >95% motor efficiency and smooth low-speed torque delivery via distortion-corrected PWM and sub-microsecond fault response. |
Use Scenario: Integrated motor + sensor + communication control in premium washing machines and dishwashers. IC Role / Device Role / Timing Role: Simultaneous management of brushless motor commutation, water level/temperature sensing, and user interface via SCI/CAN. Use Value: Reduces BOM count by consolidating DSP compute, 12-bit ADCs, and CAN into one RoHS-compliant LQFP package - simplifies CE/UL certification. |
| Automotive Body Control | Power Supply Regulation |
Use Scenario: Seat/mirror position control and window lift modules requiring EMI-hardened motor actuation. IC Role / Device Role / Timing Role: Fault-tolerant PWM generation with hardware-enforced dead time, ISO 11898-compliant CAN messaging, and watchdog-monitored quadrature feedback. Use Value: Meets AEC-Q100 Grade 2 temperature requirements (−40°C to +105°C) and supports ASIL-B functional safety via lockstep diagnostics. |
Use Scenario: Digital control of resonant LLC and phase-shifted full-bridge SMPS in telecom rectifiers and server PSUs. IC Role / Device Role / Timing Role: High-resolution PWM timing (1 ns resolution), fast ADC acquisition for voltage/current loop closure, and synchronous SPI for digital potentiometer tuning. Use Value: Achieves <1% output regulation error across line/load transients by executing PID loops in <5 µs - outperforming 8-bit MCU alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital signal controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC56F8323 | Same 56800E core, 60 MHz max, 16 KB Program Flash, no CAN, 4-channel PWM | Lacks CAN 2.0B and Boot Flash - suitable only for standalone motor control without networked diagnostics | Select when cost sensitivity outweighs need for field-upgradeable firmware and CAN bus integration |
| TMS320F28027 | 32-bit C28x core, 60 MHz, 32 KB Flash, 12-channel PWM, no integrated CAN transceiver interface | Higher precision math but requires external CAN PHY; larger footprint (64-pin TQFP vs. 100-pin LQFP) | Choose for applications needing floating-point acceleration or >6 PWM outputs, accepting added layout complexity |
Compared with MC56F8323 and TMS320F28027, the DSP56F803BU80E uniquely balances 80 MHz deterministic control, on-chip CAN 2.0B, and production-ready motor control peripherals - making it optimal for cost-constrained, CAN-connected motor drives requiring field firmware updates.
Availability
DSP56F803BU80E is available at Aetrix Electronics and suitable for industrial motor drives, smart appliance control, and automotive body electronics requiring stable component supply and long-term lifecycle support.
Supply support for DSP56F803BU80E 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) is a fabless semiconductor company specializing in microcontrollers, digital signal processors, and analog mixed-signal ICs for automotive, industrial, and consumer markets.
The 56F803 belongs to the 56800E DSC product line designed specifically for cost-sensitive, high-performance motor control - integrating DSP-grade computation with MCU-style peripherals and real-time debug capabilities.
FAQ
What is the maximum operating frequency and thermal limit of the DSP56F803BU80E?
The DSP56F803BU80E operates at a maximum core frequency of 80 MHz with a junction temperature limit of 125°C. Its thermal design uses RθJA = 35°C/W (LQFP package), requiring PCB-level thermal management - including copper pour under the package, ≥6 VDD/VSS bypass capacitors, and optional heat sink for ambient >85°C. The DSP56F803BU80E datasheet specifies junction temperature calculation as TJ = TA + (PD × RθJA).
Does the DSP56F803BU80E support in-system programming via JTAG?
Yes, the DSP56F803BU80E supports full in-system programming and debugging through its JTAG/OnCE port. All memory blocks - including 31.5 KB Program Flash, 4 KB Data Flash, and 2 KB Boot Flash - can be erased and reprogrammed via JTAG without removing the DSP56F803BU80E from the target board, enabling field firmware updates and production programming.
How does the PWM module in the DSP56F803BU80E handle fault conditions?
The DSP56F803BU80E PWM module features three dedicated FAULTA inputs that trigger immediate, hardware-level disable of corresponding PWMA outputs within <100 ns. This fault response is independent of CPU intervention and supports automatic recovery after fault clearance - essential for IGBT/MOSFET protection in motor inverters. The DSP56F803BU80E also provides ISA current-sense inputs for software-based distortion correction.
What are the analog supply requirements for the ADC and PWM reference circuits in the DSP56F803BU80E?
The DSP56F803BU80E requires separate analog power (VDDA) and ground (VSSA) rails, decoupled with ≥0.1 µF ceramic capacitors placed adjacent to pins. The internal ADC reference uses VREF pin (externally tied to VDDA), and the PWM module's analog comparators rely on clean VDDA - noise on this rail directly impacts 12-bit ADC accuracy and current-sense resolution. The DSP56F803BU80E datasheet mandates star grounding and isolation from digital return paths.
Is the DSP56F803BU80E pin-compatible with other members of the 56F80x family?
No, the DSP56F803BU80E is not pin-compatible with other 56F80x variants such as DSP56F805 or DSP56F807. While sharing the same 100-pin LQFP package, pin allocations differ significantly - especially for peripheral functions like CAN, SCI, and PWM. For example, MSCAN_TX/RX are fixed on pins 79/80 in DSP56F803BU80E but assigned to different locations in DSP56F807. Migration requires PCB redesign.
DSP56F803BU80E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 100-LQFP
- Series:
- 56F8xx
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Verified
- Core Processor:
- 56800
- Core Size:
- 16-Bit
- Speed:
- 80MHz
- Connectivity:
- CANbus, EBI/EMI, SCI, SPI
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 64KB (32K x 16)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 16
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 8x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DSP56F803BU80E FAQ
1.How can I place an order for DSP56F803BU80E through Aetrix?
Please submit a Request for Quotation (RFQ) for DSP56F803BU80E 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 DSP56F803BU80E reliable?
The price and inventory of DSP56F803BU80E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSP56F803BU80E is usually 5 days.
3.What payment methods are accepted for DSP56F803BU80E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSP56F803BU80E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSP56F803BU80E?
DSP56F803BU80E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSP56F803BU80E 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 DSP56F803BU80E?
For technical support, including DSP56F803BU80E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSP56F803BU80E requirements.
6.How does Aetrix verify that DSP56F803BU80E is sourced from the original manufacturer or authorized distributors?
All DSP56F803BU80E 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 DSP56F803BU80E meets industry standards.
7.What is the process for return or replacement of DSP56F803BU80E?
All DSP56F803BU80E units undergo pre-shipment inspection (PSI). If there is an issue with DSP56F803BU80E, 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 DSP56F803BU80E part is unused and in its original packaging.
Return procedure for DSP56F803BU80E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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