SLVA275C january   2010  – may 2023 UCD9081

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Hardware
    1. 2.1 Package: RHB (S-PQFP-N32), 32-Pin Plastic Quad Flatpack
    2. 2.2 Hardware and Pinout
    3. 2.3 Detailed Pin Descriptions
      1. 2.3.1 RST
      2. 2.3.2 SDA
      3. 2.3.3 SCL
      4. 2.3.4 ADDRx
      5. 2.3.5 ROSC
  5. 3Software
    1. 3.1 Data File Format
    2. 3.2 I2C Transactions
    3. 3.3 Device Version
    4. 3.4 Checksum
    5. 3.5 Sample Configuration Data File
      1. 3.5.1 Factory Default
      2. 3.5.2 EVM Default Configuration
    6. 3.6 I2C Write and Read Transaction Formats
      1. 3.6.1 I2C Write Transaction
      2. 3.6.2 I2C Read Transaction
    7. 3.7 Pseudo I2C Write and Read Transactions
      1. 3.7.1 UCD9081 I2C Transactions for Writing User Data and PARAMS
      2. 3.7.2 UCD9081 I2C Transactions for Reading User Data and PARAMS
  6. 4User Configuration
    1. 4.1 Configuration Parameter Memory Map
    2. 4.2 Configuration Parameter Detail
      1. 4.2.1  GpDir
      2. 4.2.2  NegateEnablePolarity
      3. 4.2.3  SeqEventPending
      4. 4.2.4  SequenceEventParameters
      5. 4.2.5  SequenceEventLink
      6. 4.2.6  SequenceEventData
      7. 4.2.7  DependencyMasks
      8. 4.2.8  UnderVoltageThresholds
      9. 4.2.9  OverVoltageThresholds
      10. 4.2.10 RampTime
      11. 4.2.11 OutOfRegulationWidth
      12. 4.2.12 UnsequenceTime
      13. 4.2.13 EnablePolarity
      14. 4.2.14 SaveRailLog
      15. 4.2.15 ReferenceSelect
      16. 4.2.16 LastUnusedSeq
      17. 4.2.17 IgnoreGlitchAlarms
      18. 4.2.18 IgnoreFlashErrorLog
      19. 4.2.19 Checksum
  7. 5Additional Considerations
    1. 5.1 Embedded Application
    2. 5.2 Timing
      1. 5.2.1 UCD9081 Startup
      2. 5.2.2 Clock Stretching After Flash Erase
      3. 5.2.3 Bit Timeout
      4. 5.2.4 Byte or Transaction Timeout
  8. 6References
  9. 7Revision History

2.2 Hardware and Pinout

Pin Number Pin Name Connection or Description
1 VSS Ground
2 NC NC
3 XIN Vcc
4, 17, 20, 31 NC(1) Vss
5 RST Device reset
6 MON1 NC
7 MON2 NC
8 MON3 NC
9 MON6 NC
10 EN4 NC
11 EN3 NC
12 EN5 NC
13 EN6 NC
14 EN7 NC
15 MON7 NC
16 MON8 NC
18 MON4 NC
19 MON5 NC
21 SDA I2C data
22 SCL I2C clock
23 EN1 NC
24 EN2 NC
25 EN8/ADDR1/GPO1 Vss
26 ADDR2/GPO2 Vss
27 ADDR3/GPO3 Vss
28 ADDR4/GPO4 Vss
29 TEST Vss
30 VCC 3.3 V
32 ROSC 100K to Vcc, or 1.75 V
(1) No Connect