AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 699

• Manufacturer Part Number: AT32UC3C1512C Automotive
• Manufacturer: Atmel Corporation

27.7.3
27.7.4
27.7.5
27.7.6
9166C–AVR-08/11
Clocks
DMA
Interrupts
Debug Operation
The clock for the TWIM bus interface (CLK_TWIM) is generated by the Power Manager. This
clock is enabled at reset, and can be disabled in the Power Manager. It is recommended to dis-
able the TWIM before disabling the clock, to avoid freezing the TWIM in an undefined state.
The TWIM DMA handshake interface is connected to the Peripheral DMA Controller. Using the
TWIM DMA functionality requires the Peripheral DMA Controller to be programmed after setting
up the TWIM.
The TWIM interrupt request lines are connected to the interrupt controller. Using the TWIM inter-
rupts requires the interrupt controller to be programmed first.
When an external debugger forces the CPU into debug mode, the TWIM continues normal oper-
ation. If the TWIM is configured in a way that requires it to be periodically serviced by the CPU
through interrupts or similar, improper operation or data loss may result during debugging.
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