DSPIC33FJ128GP706A-I/MR Microchip Technology, DSPIC33FJ128GP706A-I/MR Datasheet - Page 52

IC DSPIC MCU/DSP 128K 64-QFN

DSPIC33FJ128GP706A-I/MR

Manufacturer Part Number
DSPIC33FJ128GP706A-I/MR
Description
IC DSPIC MCU/DSP 128K 64-QFN
Manufacturer
Microchip Technology
Series
dsPIC™ 33Fr

Specifications of DSPIC33FJ128GP706A-I/MR

Core Processor
dsPIC
Core Size
16-Bit
Speed
40 MIPs
Connectivity
CAN, I²C, IrDA, LIN, SPI, UART/USART
Peripherals
AC'97, Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 18x10b/12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VFQFN, Exposed Pad
Product
DSCs
Processor Series
DSPIC33F
Core
dsPIC
3rd Party Development Tools
52713-733, 52714-737, 53276-922, EWDSPIC
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, DM240001, DV164033
Core Frequency
40MHz
Core Supply Voltage
3.3V
Embedded Interface Type
I2C, SPI, UART
No. Of I/o's
53
Flash Memory Size
128KB
Supply Voltage Range
3V To 3.6V
Rohs Compliant
No
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
MCP3909 / dsPIC33F 3-Phase Energy Meter Reference Design
6.2
6.3
DS51723A-page 52
TEST CONNECTION COMMAND
TOTAL DATA REQUEST
Variant-length frame structure is used and data communiate in bytes. The command
protocol structure is defined as following.
TABLE 6-2:
• The START word has 2 bytes, which are 0x00, 0xFF ( PC to target board) or 0xFF,
• Command word is 1 byte which indicates the type of the command
• Data length word is 1 byte that indicates the length of data field
• The data field word has multiple byte(s) that varies with command types
• Checksum word is a single byte, whose content equals to the XOR value of all
• Stop word is 1 byte with the content of 0xE0
This command is sent from the PC to the meter to setup and test the connection.
TABLE 6-3:
TABLE 6-4:
This is the main command retrieves all the calcuated data from the dsPIC33F. This
command gathers data from all 3 phases including total energy, power, and power
factor data.
TABLE 6-5:
TABLE 6-6:
0xFF, 0x00
0xFF, 0x00
0xFF, 0x00
0xFF, 0x00
0x00 (target board to PC)
bytes sent before it
2 Bytes
START
START
START
START
START
Command
Command
Command
Command
Command
1 Bytes
TYPICAL PROTOTOL
PC TO METER (7 BYTES)
METER RESPONSE (8 BYTES)
PC TO METER (7 BYTES)
METER RESPONSE (104 BYTES)
0x41
0x42
0x42
0x43
Length
Length
Length
Length
Length
1 Byte
Data
Data
0x00
Data
0x02
Data
0x00
Data
0x62
0xA5, 0X5A
Data Field
Data Field
Data Field
Data Field
Data Field
98 bytes
N Bytes
0x00
0x00
Check Sum
Check Sum
Check Sum
Check Sum
Check Sum
© 2009 Microchip Technology Inc.
1 Byte
XX
XX
XX
XX
1 Byte
STOP
STOP
STOP
STOP
STOP
0xE0
0xE0
0xE0
0xE0

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