ade7880 Analog Devices, Inc., ade7880 Datasheet - Page 78

• Manufacturer Part Number: ade7880
• Description: Polyphase Multifunction Energy Metering Ic With Harmonic Monitoring
• Manufacturer: Analog Devices, Inc.

ADE7880
SILICON ANOMALY
This anomaly list describes the known issues with the ADE7880 silicon identified by the version register (Address 0xE707) being equal to
1.
Analog Devices, Inc., is committed, through future silicon revisions, to continuously improve silicon functionality. Analog Devices tries
to ensure that these future silicon revisions remain compatible with your present software/systems by implementing the recommended
workarounds outlined here.
ADE7880 FUNCTIONALITY ISSUES
Silicon Revision
Identifier
Version = 1
FUNCTIONALITY ISSUES
Table 25. LAST_ADD register shows wrong value for harmonic calculations registers in SPI mode [er001, Version=1 Silicon]
Background
Issue
Workaround
Related Issues
Table 26. To Obtain Best Accuracy Performance, Internal Setting Must Be Changed [er002, Version = 1 Silicon]
Background
Issue
Workaround
Related Issues
When any ADE7880 register is read using SPI or I
Communication verification section for details).
When the harmonic calculation registers located between addresses 0xE880 and 0xE89F are read using SPI
communication, LAST_ADD register contains the address of the register incremented by 1. The issue is not present if the
I
If LAST_ADD register is read after one of the registers located between addresses 0xE880 and 0xE89F was read using SPI
communication, subtract 1 from it to recover the right address.
None.
Internal default settings provide best accuracy performance for ADE7880.
It was found that if a different setting is used, the accuracy performance can be improved.
To enable a new setting for this internal register, execute two consecutive write operations:
The first write operation is to a 8-bit register: 0xAD is written to Address 0xE7FE.
The second write operation is to a 16-bit register: 0x3BD is written to Address 0xE90C.
The write operations must be executed consecutively without any other read/write operation in between. As a
verification that the value was captured correctly, a simple 16-bit read of address 0xE90C should show the 0x3BD value.
None.
2
C communication is used.
Chip Marking
ADE7880ACPZ
Silicon Status
Preliminary
Rev. PrE | Page 78 of 103
2
C communication, the address is stored into LAST_ADD register (see
Anomaly Sheet
Rev. 0
Preliminary Technical Data
No. of Reported Issues
2(er001, er002)