Table of Contents
Advertisement
12.4.11 Wakeup function
2
The I
C bus slave function is a function that generates an interrupt request (INTIIC) when a local address and
extension code have been received.
This function makes processing more efficient by preventing unnecessary interrupt requests from occurring when
addresses do not match.
When a start condition is detected, wakeup standby mode is set. This wakeup standby mode is in effect while
addresses are transmitted due to the possibility that an arbitration loss may change the master device (which has
output a start condition) to a slave device.
However, when a stop condition is detected, bit 5 (SPIE) of the IIC control register (IICC) is set regardless of the
wakeup function, and this determines whether interrupt requests are enabled or disabled.
CHAPTER 12 SERIAL INTERFACE FUNCTION
Preliminary User's Manual U15905EJ1V0UD
389
Advertisement
Table of Contents
