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MCP39F521 датащи(PDF) 17 Page - Microchip Technology

номер детали MCP39F521
подробное описание детали  I2C Power Monitor with Calculation and Energy Accumulation
PDF  52 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP39F521 датащи(HTML) 17 Page - Microchip Technology

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 2015 Microchip Technology Inc.
DS20005442A-page 17
MCP39F521
4.5
Command List
The following table is a list of all accepted command
bytes for the MCP39F521. There are 10 possible
accepted commands for the MCP39F521.
4.6
Example Communication Frames
and MCP39F521 Responses
Tables 4-2
to
4-11
show
exact
hexadecimal
communication frames as they should be sent to the
MCP39F521 from the system MCU. The values here
can be used as direct examples for writing your code to
communicate to the MCP39F521.
TABLE 4-1:
MCP39F521 INSTRUCTION SET
Command
#
Command
Command
ID
Instruction
Parameter
Number
of Bytes
Successful
Response
1
Register Read, N bytes
0x4E
Number of Bytes
2
ACK, Data,
Checksum
2
Register Write, N bytes
0x4D
Number of Bytes
1+N
ACK
3
Set Address Pointer
0x41
ADDRESS
3
ACK
4
Save Registers To Flash
0x53
None
2
ACK
5
Page Read EEPROM
0x42
PAGE
2
ACK, Data,
Checksum
6
Page Write EEPROM
0x50
PAGE
18
ACK
7
Bulk Erase EEPROM
0x4F
None
2
ACK
8
Auto-Calibrate Gain
0x5A
None
Note 1
9
Auto-Calibrate Reactive Gain
0x7A
None
Note 1
10
Auto-Calibrate Frequency
0x76
None
Note 1
Note 1:
See Section 8.0, MCP39F521 Calibration for more information on calibration.
TABLE 4-2:
REGISTER READ, N BYTES COMMAND (Note 1)
Byte #
Value
Byte Description
Response from MCP39F521
1
0xA5
Header Byte
2
0x08
Number of Bytes in Frame
3
0x41
Command (Set Address Pointer)
4
0x00
Address High
50x02
Address Low
6
0x4E
Command (Register Read, N bytes)
7
0x20
Number of Bytes to Read (32)
8
0x5E
Checksum
ACK + Number of Bytes (35) + 32 bytes, + Checksum
Note 1:
This example Register Read, N bytes frame, as written here, can be used to poll a subset of the
output data, starting at the top, address 0x02, and reading 32 data bytes back or 35 bytes total in the
frame.



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