DSPIC33EP128GS708 datasheet(365/484 Pages) MICROCHIP

365 / 484 page

 2016-2018 Microchip Technology Inc.

DS70005258C-page 365

dsPIC33EPXXXGS70X/80X FAMILY

28.0 INSTRUCTION SET SUMMARY

The dsPIC33EP instruction set is almost identical to

that of the dsPIC30F and dsPIC33F.

Most instructions are a single program memory word

(24 bits). Only three instructions require two program

memory locations.

Each single-word instruction is a 24-bit word, divided

into an 8-bit opcode, which specifies the instruction

type and one or more operands, which further specify

the operation of the instruction.

The instruction set is highly orthogonal and is grouped

into five basic categories:

• Word or byte-oriented operations

• Bit-oriented operations

• Literal operations

• DSP operations

• Control operations

Table 28-1 lists the general symbols used in describing

the instructions.

The dsPIC33E instruction set summary in Table 28-2

lists all the instructions, along with the status flags

affected by each instruction.

Most word or byte-oriented W register instructions

(including barrel shift instructions) have three

operands:

• The first source operand, which is typically a

• The second source operand, which is typically a

• The destination of the result, which is typically a

However, word or byte-oriented file register instructions

have two operands:

• The file register specified by the value ‘f’

• The destination, which could be either the file

‘WREG’

Most bit-oriented instructions (including simple rotate/

shift instructions) have two operands:

• The W register (with or without an address

modifier) or file register (specified by the value of

‘Ws’ or ‘f’)

• The bit in the W register or file register (specified

by a literal value or indirectly by the contents of

The literal instructions that involve data movement can

use some of the following operands:

• A literal value to be loaded into a W register or file

• The W register or file register where the literal

value is to be loaded (specified by ‘Wb’ or ‘f’)

However, literal instructions that involve arithmetic or

logical operations use some of the following operands:

• The first source operand, which is a register ‘Wb’

without any address modifier

• The second source operand, which is a literal

value

• The destination of the result (only if not the same

as the first source operand), which is typically a

The MAC class of DSP instructions can use some of the

following operands:

• The accumulator (A or B) to be used (required

operand)

• The W registers to be used as the two operands

• The X and Y address space prefetch operations

• The X and Y address space prefetch destinations

• The accumulator write back destination

The other DSP instructions do not involve any

multiplication and can include:

• The accumulator to be used (required)

• The source or destination operand (designated as

Wso or Wdo, respectively) with or without an

address modifier

• The amount of shift specified by a W register ‘Wn’

or a literal value

The control instructions can use some of the following

operands:

• A program memory address

• The mode of the Table Read and Table Write

instructions

Note:

This

data

sheet

summarizes

the

features of the dsPIC33EPXXXGS70X/

80X family of devices. It is not intended to

be a comprehensive reference source. To

complement the information in this data

sheet, refer to the related section of the

“dsPIC33/PIC24 Family Reference Manual”,

which is available from the Microchip

web site (www.microchip.com).

DSPIC33EP128GS708 Datasheet(PDF) 365 Page - Microchip Technology

DSPIC33EP128GS708 Datasheet(HTML) 365 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL