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