Features: 1.1.1 Digital Signal Processing Core
• Efficient 16-bit DSP56800 family DSP engine with dual Harvard architecture
• As many as 40 Million Instructions Per Second (MIPS) at 80MHz core frequency
• Single-cycle 16 × 16-bit parallel Multiplier-Accumulator (MAC)
• Two 36-bit accumulators including extension bits
• 16-bit bidirectional shifter
• Parallel instruction set with unique DSP addressing modes
• Hardware DO and REP loops
• Three internal address buses and one external address bus
• Four internal data buses and one external data bus
• 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/OnCE Debug Programming InterfaceSpecifications
| Characteristic |
Symbol |
Min |
Max |
Unit |
| Supply voltage, core |
VDD1 |
VSS 0.3 |
VSS + 3.0 |
V |
Supply voltage, IO
Supply voltage, Analog
Supply voltage, ADC |
DDIO2
VDDA2
VDDA_ADC |
VSSIO 0.3
VSSA 0.3
VSSA_ADC-0.3 |
VSSIO + 4.0
VSSA+ 4.0
VSSA_ADC-0.3 |
V |
Digital input voltages
Analog input voltages (XTAL, EXTAL)
Analog input voltages (ANA0-7, VREF) |
VIN
VINA
VIN_ADC |
VSSIO 0.3
VSSA 0.3
VSSA_ADC-0.3 |
VSSIO + 5.5
VSSA + 3.0
VSSA_ADC-0.3 |
V |
Current drain per pin excluding VDD, VSS, VDDA,
VSSA,VDDIO, VSSIO |
I |
- |
10 |
mA |
| Junction temperature |
TJ |
- |
150 |
°C |
| Storage temperature range |
TSTG |
55 |
150 |
°C |
1. VDD must not exceed VDDIO
2. VDDIO and VDDA must not differ by more that 0.5VDescriptionThe DSP56F827 is a member of the DSP56800 core-based family of Digital Signal Processors (DSPs). 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 for general purpose applications. Because of its low cost, configuration flexibility, and compact program code, the DSP56F827 is wellsuited for many applications. The DSP56F827 includes many peripherals that are especially useful for applications such as: noise suppression, ID tag readers, sonic/subsonic detectors, security access devices, remote metering, sonic alarms, and telephony.
The DSP56800 core is based on a Harvard-style architecture consisting of three execution units operating in parallel, allowing as many as six operations per instruction cycle. The microprocessor-style programming model and optimized instruction set allow straightforward generation of efficient, compact code for both DSP and MCU applications. The instruction set is also highly efficient for C/C++ Compilers to enable rapid development of optimized control applications.
The DSP56F827 supports program execution from either internal or external memories. Two data operands can be accessed from the on-chip Data RAM per instruction cycle. The DSP56F827 also provides two external dedicated interrupt lines, and up to 64 General Purpose Input/Output (GPIO) lines, depending on peripheral configuration.
The DSP56F827 DSP controller includes 64K words (16-bit) of Program Flash and 4K words of Data Flash (each programmable through the JTAG port) with 1K words of Program RAM and 4K words of Data RAM. It also supports program execution from external memory. The DSP56800 core is capable of accessing two data operands from the on-chip Data RAM per instruction cycle.
This DSP controller also provides a full set of standard programmable peripherals that include one 10-input, 12-bit Analog-to-Digital Converters (ADC), one Synchronous Serial Interface (SSI), two Serial Peripheral Interfaces (SPI), three Serial Communications Interfaces (SCI). (Note: The second SPI is multiplexed with the second and third SCIs giving the option to select a second SPI or two additional SCIs.) This DSP controller also provides one Programmable Chip Select (PCS), and one Quad Timer. The SCI, SSI, SPI, quad timer A, and select address and data lines can be used as General Purpose Input/Outputs (GPIOs) if those functions are not required
Digital Signal Controller
DSP56F827 Data Sheet
