TMS320F28068

(ACTIVE) Piccolo Microcontroller

Diagrams

Functional diagram

Description

The F2806x Piccolo family of microcontrollers (MCUs) provides the power of the C28x core and CLA coupled with highly integrated control peripherals in low pin-count devices. This family is code-compatible with previous C28x-based code, and also provides a high level of analog integration.

An internal voltage regulator allows for single-rail operation. Enhancements have been made to the High-Resolution Pulse Width Modulator (HRPWM) module to allow for dual-edge control (frequency modulation). Analog comparators with internal 10-bit references have been added and can be routed directly to control the ePWM outputs. The ADC converts from 0 to 3.3-V fixed full-scale range and supports ratio-metric VREFHI/VREFLO references. The ADC interface has been optimized for low overhead and latency.

Features

  • High-Efficiency 32-Bit CPU (TMS320C28x)
    • 90 MHz (11.11-ns Cycle Time)
    • 16 × 16 and 32 × 32 Multiply and Accumulate (MAC) Operations
    • 16 × 16 Dual MAC
    • Harvard Bus Architecture
    • Atomic Operations
    • Fast Interrupt Response and Processing
    • Unified Memory Programming Model
    • Code-Efficient (in C/C++ and Assembly)
  • Floating-Point Unit (FPU)
    • Native Single-Precision Floating-Point Operations
  • Programmable Control Law Accelerator (CLA)
    • 32-Bit Floating-Point Math Accelerator
    • Executes Code Independently of the Main CPU
  • Viterbi, Complex Math, CRC Unit (VCU)
    • Extends C28x Instruction Set to Support Complex Multiply, Viterbi Operations, and Cyclic Redundency Check (CRC)
  • Embedded Memory
    • Up to 256KB of Flash
    • Up to 100KB of RAM
    • 2KB of One-Time Programmable (OTP) ROM
  • 6-Channel Direct Memory Access (DMA)
  • Low Device and System Cost
    • Single 3.3-V Supply
    • No Power Sequencing Requirement
    • Integrated Power-on Reset and Brown-out Reset
    • Low-Power Operating Modes
    • No Analog Support Pin
  • Endianness: Little Endian
  • JTAG Boundary Scan Support
    • IEEE Standard 1149.1-1990 Standard Test Access Port and Boundary Scan Architecture
  • Clocking
    • Two Internal Zero-Pin Oscillators
    • On-Chip Crystal Oscillator/External Clock Input
    • Watchdog Timer Module
    • Missing Clock Detection Circuitry
  • Peripheral Interrupt Expansion (PIE) Block That Supports All Peripheral Interrupts
  • Three 32-Bit CPU Timers
  • Advanced Control Peripherals
  • Up to 8 Enhanced Pulse-Width Modulator (ePWM) Modules
    • 16 PWM Channels Total (8 HRPWM-Capable)
    • Independent 16-Bit Timer in Each Module
  • Three Input Enhanced Capture (eCAP) Modules
  • Up to 4 High-Resolution Capture (HRCAP) Modules
  • Up to 2 Enhanced Quadrature Encoder Pulse (eQEP) Modules
  • 12-Bit Analog-to-Digital Converter (ADC), Dual Sample-and-Hold (S/H)
    • Up to 3.46 MSPS
    • Up to 16 Channels
  • On-Chip Temperature Sensor
  • 128-Bit Security Key and Lock
    • Protects Secure Memory Blocks
    • Prevents Reverse-Engineering of Firmware
  • Serial Port Peripherals
    • Two Serial Communications Interface (SCI) [UART] Modules
    • Two Serial Peripheral Interface (SPI) Modules
    • One Inter-Integrated-Circuit (I2C) Bus
    • One Multichannel Buffered Serial Port (McBSP) Bus
    • One Enhanced Controller Area Network (eCAN)
    • Universal Serial Bus (USB) 2.0
      (see Device Comparison Table for Availability)
      • Full-Speed Device Mode
      • Full-Speed or Low-Speed Host Mode
  • Up to 54 Individually Programmable, Multiplexed General-Purpose Input/Output (GPIO) Pins With Input Filtering
  • Advanced Emulation Features
    • Analysis and Breakpoint Functions
    • Real-Time Debug Through Hardware
  • 2806x Packages
    • 80-Pin PFP and 100-Pin PZP PowerPAD Thermally Enhanced Thin Quad Flatpacks (HTQFPs)
    • 80-Pin PN and 100-Pin PZ Low-Profile Quad Flatpacks (LQFPs)

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Parametrics

CPU C28x    
Total Processing (MIPS) 90    
Frequency (MHz) 90    
Processing Accelerators FPU^VCU^DMA    
Frequency per CLA (MHz) 0    
Flash (KB) 256    
RAM (KB) 100    
ROM (KB) 0    
PWM (Ch) 16^14    
High Resolution PWM(Ch) 8^6    
PWM Technology Type Type 1    
Other Actuation Features N/A    
Analog to Digital Converter (ADC) ADC12: 2-S/H, 3.46-MSPS    
ADC (Ch) 16^12    
CAP 3    
QEP 2^1    
Other Sensing Features High Resolution Captures^Standard Comparators    
I2C 1    
SPI 2    
UART 2    
Other Connectivity Features USB^McBSP^CAN    
Additional Features Single Zone Code Security^Temperature Sensor^32-bit CPU Timers^Watchdog Timer^NMI Watchdog Timer^2-pin Oscillator^0-pin Oscillators^Power On Reset (POR)^Brown Out Reset (BOR)^AEC-Q100 Automotive Qual    
GPIO 54^40    
Operating Temperature Range (C) -40 to 125    
Package Group HTQFP    
Package Size (mm2=WxL) 80HTQFP: 196 mm2: 14 x 14    
Approx. Price (US$)  
Pin/Package 80HTQFP    

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Technical Documents

Datasheet (1)

Errata (1)

Application notes (24)

User guides (14)

Selection guides (2)

White papers (10)

More literature (16)

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