Skip to content

  • Projects
  • Groups
  • Snippets
  • Help
    • Loading...
  • Sign in
F
FMC DIO 5ch TTL a
  • Project
    • Project
    • Details
    • Activity
    • Cycle Analytics
  • Repository
    • Repository
    • Files
    • Commits
    • Branches
    • Tags
    • Contributors
    • Graph
    • Compare
    • Charts
  • Issues 6
    • Issues 6
    • List
    • Board
    • Labels
    • Milestones
  • Merge Requests 0
    • Merge Requests 0
  • Wiki
    • Wiki
  • image/svg+xml
    Discourse
    • Discourse
  • Members
    • Members
  • Collapse sidebar
  • Activity
  • Graph
  • Charts
  • Create a new issue
  • Commits
  • Issue Boards
  • Projects
  • FMC DIO 5ch TTL a
  • Issues
  • #15

Closed
Open
Opened Nov 08, 2011 by Erik van der Bij@erikvanderbij
  • Report abuse
  • New issue
Report abuse New issue

1-wire thermometer chip Vih 0.1V too high.

Regarding the 1-Wire serial number / thermometer chip, the Maxim DS18B20U+:
The data sheet says that when operated from a 3.3V supply (2.5V is not possible), the minimum input high voltage level (Vih) is 2.2V.
On the other hand the Spartan 6 (that is used on the SPEC) data sheet says that its minimum output high voltage level (Voh) on a 2.5V powered bank is 2.1V. So it's close but not ideal.

  • Verify above statement
  • Decide if is acceptable or not.
Assignee
Assign to
None
Milestone
None
Assign milestone
Time tracking
None
Due date
No due date
1
Labels
feature
Assign labels
  • View project labels
Reference: project/fmc-dio-5chttla#15