mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 311

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

17.8 Program Algorithm
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
When the MMIIC module detects an arbitration loss in master mode, it
releases both SDA and SCL lines immediately. But if there are no further
STOP conditions detected, the module will hang up. Therefore, it is
recommended to have time-out software to recover from this condition.
The software can start the time-out counter by looking at the MMBB (bus
busy) flag and reset the counter on the completion of one byte
transmission. If a time-out has occurred, software can clear the MMEN
bit (disable MMIIC module) to release the bus, and hence clear the
MMBB flag. This is the only way to clear the MMBB flag by software if
the module hangs up due to a no STOP condition received. The MMIIC
can resume operation again by setting the MMEN bit.
Multi-Master IIC Interface (MMIIC)
Multi-Master IIC Interface (MMIIC)
Program Algorithm
Data Sheet
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