dsPIC33FJ09GS302-E/SS Microchip Technology, dsPIC33FJ09GS302-E/SS Datasheet - Page 36

• Manufacturer Part Number: dsPIC33FJ09GS302-E/SS
• Description: Digital Signal Processors & Controllers - DSP, DSC 40 MIPS 9 KB FL 1024Bytes RAM SMPS
• Manufacturer: Microchip Technology

Specifications of dsPIC33FJ09GS302-E/SS

• Rohs: yes
• Core: dsPIC33F
• Data Bus Width: 16 bit
• Program Memory Size: 9 KB
• Data Ram Size: 1 KB
• Device Million Instructions Per Second: 40 MIPs
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 125 C
• Package / Case: SSOP-28
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C

dsPIC33F DEVICES WITH VOLATILE CONFIGURATION BITS
6.2
The programming executive command set is shown in
Table
length, time out and description for each command.
Functional details on each command are provided in
the command descriptions
Descriptions”).
6.2.1
All programming executive commands have a general
format consisting of a 16-bit header and any required
data for the command (see
header consists of a 4-bit opcode field, which is used to
identify the command, followed by a 12-bit command
length field.
FIGURE 6-3:
The command opcode must match one of those in the
command set. Any command that is received which
does not match the list in
response (see
The command length is represented in 16-bit words
since the SPI operates in 16-bit mode. The
programming executive uses the command length field
to determine the number of words to read from the SPI
port. If the value of this field is incorrect, the command
will not be properly received by the programming
executive.
DS70659B-page 36
15
Opcode
6-1. This table contains the opcode, mnemonic,
Command Data First Word (if required)
Command Data Last Word (if required)
Programming Executive
Commands
12 11
COMMAND FORMAT
Section 6.3.1.1 “Opcode
COMMAND FORMAT
Table 6-1
•
•
(Section 6.2.4 “Command
Length
Figure
will return a “NACK”
6-3). The 16-bit
Field”).
0
6.2.2
When 24-bit instruction words are transferred across
the 16-bit SPI interface, they are packed to conserve
space using the format illustrated in
format minimizes traffic over the SPI and provides the
programming executive with data that is properly
aligned for performing table write operations.
FIGURE 6-4:
6.2.3
The
unsupported commands. Additionally, due to the
memory constraints of the programming executive, no
checking is performed on the data contained in the
programmer command. It is the responsibility of the
programmer to command the programming executive
with valid command arguments or the programming
operation may fail. Additional information on error
handling is provided in
Field”.
Note:
15
LSWx: Least Significant 16 bits of instruction word
MSBx: Most Significant Byte of instruction word
programming
MSB2
PACKED DATA FORMAT
When the number of instruction words
transferred is odd, MSB2 is zero and
LSW2 cannot be transmitted.
PROGRAMMING EXECUTIVE
ERROR HANDLING
PACKED INSTRUCTION
WORD FORMAT
executive
© 2011 Microchip Technology Inc.
LSW1
LSW2
8 7
Section 6.3.1.3 “QE_Code
will
MSB1
Figure
“NACK”
6-4. This
0
all