DSPIC33F datasheet(49/80 Pages) MICROCHIP

49 / 80 page

Preliminary

DS70152D-page 49

dsPIC33F/PIC24H PROGRAMMING SPECIFICATION

TABLE 4-1:

PROGRAMMING EXECUTIVE COMMAND SET

4.2.4

COMMAND DESCRIPTIONS

All commands supported by the programming executive

are described in Section 5.2.5 “SCHECK Command”

through Section 4.2.12 “QVER Command”.

4.2.5

SCHECK

COMMAND

The SCHECK command instructs the programming

executive to do nothing but generate a response. This

command is used as a “Sanity Check” to verify that the

programming executive is operational.

Expected Response (2 words):

0x1000

0x0002

Opcode

Mnemonic

Length

(16-bit words)

Time Out

Description

0x0

SCHECK

1 msec

Sanity check.

0x1

READC

1 msec

Read an 8-bit word from the specified Configuration register or

Device ID register.

0x2

READP

1 msec/row Read ‘N’ 24-bit instruction words of code memory starting from

the specified address.

0x3

RESERVED

N/A

This command is reserved. It will return a NACK.

0x4

PROGC

5 msec

Write an 8-bit word to the specified Configuration register.

0x5

PROGP

5 msec

Program one row of code memory at the specified address,

then verify.

0x6

PROGW

5 msec

Program one instruction word of code memory at the specified

address, then verify.

0x7

RESERVED

N/A

This command is reserved. It will return a NACK.

0x8

RESERVED

N/A

This command is reserved. It will return a NACK.

0x9

RESERVED

N/A

This command is reserved. It will return a NACK.

0xA

QBLANK

TBD

Query if the code memory is blank.

0xB

QVER

1 msec

Query the programming executive software version.

0xC

RESERVED

N/A

This command is reserved. It will return a NACK.

0xD

RESERVED

N/A

This command is reserved. It will return a NACK.

Legend: TBD = To Be Determined

Note:

One row of code memory consists of (64) 24-bit words. Refer to Table 2-2 for device-specific information.

12 11

Opcode

Length

Field

Description

Opcode

0x0

Length

0x1

Note:

This

instruction

not

required

for

programming,

but

provided

for

development purposes only.

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