SLVA275C
january 2010 – may 2023
UCD9081
Abstract
Trademarks
1
Introduction
2
Hardware
2.1
Package: RHB (S-PQFP-N32), 32-Pin Plastic Quad Flatpack
2.2
Hardware and Pinout
2.3
Detailed Pin Descriptions
2.3.1
RST
2.3.2
SDA
2.3.3
SCL
2.3.4
ADDRx
2.3.5
ROSC
3
Software
3.1
Data File Format
3.2
I2C Transactions
3.3
Device Version
3.4
Checksum
3.5
Sample Configuration Data File
3.5.1
Factory Default
3.5.2
EVM Default Configuration
3.6
I2C Write and Read Transaction Formats
3.6.1
I2C Write Transaction
3.6.2
I2C Read Transaction
3.7
Pseudo I2C Write and Read Transactions
3.7.1
UCD9081 I2C Transactions for Writing User Data and PARAMS
3.7.2
UCD9081 I2C Transactions for Reading User Data and PARAMS
4
User Configuration
4.1
Configuration Parameter Memory Map
4.2
Configuration Parameter Detail
4.2.1
GpDir
4.2.2
NegateEnablePolarity
4.2.3
SeqEventPending
4.2.4
SequenceEventParameters
4.2.5
SequenceEventLink
4.2.6
SequenceEventData
4.2.7
DependencyMasks
4.2.8
UnderVoltageThresholds
4.2.9
OverVoltageThresholds
4.2.10
RampTime
4.2.11
OutOfRegulationWidth
4.2.12
UnsequenceTime
4.2.13
EnablePolarity
4.2.14
SaveRailLog
4.2.15
ReferenceSelect
4.2.16
LastUnusedSeq
4.2.17
IgnoreGlitchAlarms
4.2.18
IgnoreFlashErrorLog
4.2.19
Checksum
5
Additional Considerations
5.1
Embedded Application
5.2
Timing
5.2.1
UCD9081 Startup
5.2.2
Clock Stretching After Flash Erase
5.2.3
Bit Timeout
5.2.4
Byte or Transaction Timeout
6
References
7
Revision History
3.5
Sample Configuration Data File