I²C Sequential Read

Start wherever you are and give me all you've got!

An I²C sequential read begins reading at whatever the current address is inside the device. You simply keep reading in bytes (interspersed with idle checks) until you've read enough. To stop the reading, send a NACK and then a STOP condition.

i2c-sequential-read.png

EEPROM Sequential Read Procedure

  1. Check for bus idle
  2. Send start condition, wait for it to complete
  3. Write control byte (with device address)
  4. Check for bus idle
  5. Read one byte - go to 4 until you've had enough data
  6. Send NACK condition - wait for ACK sequence to complete
  7. Send stop condition, wait for it to complete

  Return to Top

© 2024 Microchip Technology, Inc.
Notice: ARM and Cortex are the registered trademarks of ARM Limited in the EU and other countries.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.