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MCP39F511A Datasheet(PDF) 17 Page - Microchip Technology

Part # MCP39F511A
Description  AC/DC Dual-Mode Power-Monitoring IC with Calculation and Energy Accumulation
PDF  68 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP39F511A Datasheet(HTML) 17 Page - Microchip Technology

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 2018 Microchip Technology Inc.
DS20006044A-page 17
MCP39F511A
4.4
Command List
The following table is a list of all accepted command
bytes for the MCP39F511A device. There are 10
possible accepted commands for the MCP39F511A
device.
4.5
Example Communication Frames
and MCP39F511A Responses
Tables 4-2 to 4-11 show exact hexadecimal
communication frames as recommended to be sent to
the MCP39F511A device from the system MCU. The
values here can be used as direct examples for writing
the code to communicate to the MCP39F511A device.
TABLE 4-1:
MCP39F511A INSTRUCTION SET
Command
#
Command
Command
ID
Instruction
Parameter
Number of
Bytes
Successful
Response
UART_TX
1
Register Read, N bytes
0x4E
NoB(3)
2
ACK, NoB, data,
checksum
2
Register Write, N bytes
0x4D
NoB(3)
1+N
ACK
3
Set Address Pointer
0x41
ADDRESS
3
ACK
4
Save Registers To Flash
0x53
None
1
ACK
5
Page Read EEPROM
0x42
PAGE
2
ACK, NoB, data,
checksum
6
Page Write EEPROM
0x50
PAGE
18
ACK
7
Bulk Erase EEPROM
0x4F
None
1
ACK
8
Auto-Calibrate Gain
0x5A
None
Note 1
9
Auto-Calibrate Reactive Gain
0x7A
None
Note 1, 2
10
Auto-Calibrate Frequency
0x76
None
Note 1, 2
11
Save Energy Counters to EEPROM
0x45
None
1
ACK
Note 1:
See Section 9.0 “MCP39F511A Calibration” for more information.
2:
AC mode only
3:
NoB represents total number of bytes in frame
TABLE 4-2:
REGISTER READ, N BYTES COMMAND (Note 1)
Byte #
Value
Description
Response from MCP39F511A
1
0xA5
Header Byte
2
0x08
Number of Bytes in Frame
3
0x41
Command (Set Address Pointer)
4
0x00
Address High
5
0x02
Address Low
6
0x4E
Command (Register Read, N Bytes)
7
0x20
Number of Bytes to Read (32)
8
0x5E
Checksum
ACK + NoB (35) + data (32) + checksum
Note 1:
This example Register Read, N bytes frame, as it is 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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