56F8035/56F8025 Description

The 56F8035/56F8025 is a member of the 56800E core-based family of Digital Signal Controllers (DSCs). It combines, on a single chip, the processing power of a DSP and the functionality of a microcontroller with a flexible set of peripherals to create an extremely cost-effective solution. Because of its low cost, configuration flexibility, and compact program code, the 56F8035/56F8025 is well-suited for many applications. The 56F8035/56F8025 includes many peripherals that are especially useful for industrial control, motion control, home appliances, general-purpose inverters, smart sensors, fire and security systems, switched-mode power supply, power management, and medical monitoring applications.

The 56800E core is based on a dual Harvard-style architecture consisting of three execution units operating in parallel, allowing as many as six operations per instruction cycle. The MCU-style programming model and optimized instruction set allow straightforward generation of efficient, compact DSP and control code. The instruction set is also highly efficient for C compilers to enable rapid development of optimized control applications.

56F8035/56F8025 General Description

• Up to 32 MIPS at 32MHz core frequency

• DSP and MCU functionality in a unified, C-efficient architecture

• 56F8035 offers 64KB (32K x 16) Program Flash

• 56F8025 offers 32KB (16K x 16) Program Flash

• 56F8035 offers 8KB (4K x 16) Unified Data/Program RAM

• 56F8025 offers 4KB (2K x 16) Unified Data/Program RAM

• One 6-channel PWM module

• Two 4-channel 12-bit Analog-to-Digital Converters (ADCs)

• Two Internal 12-bit Digital-to-Analog Converters (DACs)

• Two Analog Comparators

• Three Programmable Interval Timers (PITs)

• One Queued Serial Communication Interface (QSCI) with LIN slave functionality

• One Queued Serial Peripheral Interfaces (QSPI)

• One 16-bit Quad Timer

• One Inter-Integrated Circuit (I2C) port

• Computer Operating Properly (COP)/Watchdog

• On-Chip Relaxation Oscillator

• Integrated Power-On Reset (POR) and Low-Voltage Interrupt (LVI) module

• JTAG/Enhanced On-Chip Emulation (OnCE™) for unobtrusive, real-time debugging

• Up to 35 GPIO lines

56F8035/56F8025 Features

Digital Signal Controller Core

• Efficient 16-bit 56800E family Digital Signal Controller (DSC) engine with dual Harvard architecture

• As many as 32 Million Instructions Per Second (MIPS) at 32MHz core frequency

• Single-cycle 16 × 16-bit parallel Multiplier-Accumulator (MAC)

• Four 36-bit accumulators, including extension bits

• 32-bit arithmetic and logic multi-bit shifter

• Parallel instruction set with unique DSP addressing modes

• Hardware DO and REP loops

• Three internal address buses

• Four internal data buses

• Instruction set supports both DSP and controller functions

• Controller-style addressing modes and instructions for compact code

• Efficient C compiler and local variable support

• Software subroutine and interrupt stack with depth limited only by memory

• JTAG/Enhanced On-Chip Emulation (OnCE) for unobtrusive, processor speed-independent real-time debugging

Memory

• Dual Harvard architecture permits as many as three simultaneous accesses to program and data memory

• Flash security and protection that prevent unauthorized users from gaining access to the internal Flash

• On-chip memory

   — 64KB of Program Flash (56F80235 device)

     32KB of Program Flash (56F8025 device)

   — 8KB of Unified Data/Program RAM (56F8035 device)

     4KB of Unified Data/Program RAM (56F8025 device)

• EEPROM emulation capability using Flash

Peripheral Circuits for 56F8035/56F8025

• One multi-function six-output Pulse Width Modulator (PWM) module

   — Up to 96MHz PWM operating clock

   — 15 bits of resolution

   — Center-aligned and edge-aligned PWM signal mode

   — Four programmable fault inputs with programmable digital filter

   — Double-buffered PWM registers

   — Each complementary PWM signal pair allows selection of a PWM supply source from:

      – PWM generator

      – External GPIO

      – Internal timers

      – Analog comparator outputs

      – ADC conversion result which compares with values of ADC high- and low-limit registers to set PWM output

• Two independent 12-bit Analog-to-Digital Converters (ADCs)

   — 2 x 4 channel inputs

   — Supports both simultaneous and sequential conversions

   — ADC conversions can be synchronized by both PWM and timer modules

   — Sampling rate up to 2.67MSPS

   — 16-word result buffer registers

• Two internal 12-bit Digital-to-Analog Converters (DACs)

   — 2 microsecond settling time when output swing from rail to rail

   — Automatic waveform generation generates square, triangle and sawtooth waveforms with

programmable period, update rate, and range

• One 16-bit multi-purpose Quad Timer module (TMR)

   — Up to 96MHz operating clock

   — Eight independent 16-bit counter/timers with cascading capability

   — Each timer has capture and compare capability

   — Up to 12 operating modes

• One Queued Serial Communication Interface (QSCI) with LIN Slave functionality

   — Full-duplex or single-wire operation

   — Two receiver wake-up methods:

      – Idle line

      – Address mark

   — Four-bytes-deep FIFOs are available on both transmitter and receiver

• One Queued Serial Peripheral Interfaces (QSPI)

   — Full-duplex operation

   — Master and slave modes

   — Four-words-deep FIFOs available on both transmitter and receiver

   — Programmable Length Transactions (2 to 16 bits)

• One Inter-Integrated Circuit (I2C) port

   — Operates up to 400kbps

   — Supports both master and slave operation

   — Supports both 10-bit address mode and broadcasting mode

• Three 16-bit Programmable Interval Timers (PITs)

• Two analog Comparators (CMPs)

   — Selectable input source includes external pins, DACs

   — Programmable output polarity

   — Output can drive Timer input, PWM fault input, PWM source, external pin output and trigger ADCs

   — Output falling and rising edge detection able to generate interrupts

• Computer Operating Properly (COP)/Watchdog timer capable of selecting different clock sources

• Up to 35 General-Purpose I/O (GPIO) pins with 5V tolerance

• Integrated Power-On Reset (POR) and Low-Voltage Interrupt (LVI) module

• Phase Lock Loop (PLL) provides a high-speed clock to the core and peripherals

• Clock sources:

   — On-chip relaxation oscillator

   — External clock: Crystal oscillator, ceramic resonator, and external clock source

• JTAG/EOnCE debug programming interface for real-time debugging

Energy Information

• Fabricated in high-density CMOS with 5V tolerance

• On-chip regulators for digital and analog circuitry to lower cost and reduce noise

• Wait and Stop modes available

• ADC smart power management

• Each peripheral can be individually disabled to save power