2.22.9 High-speed clock oscillator (HOCO) [RX71M, RX64M, RX210, RX21A, RX220]

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The emulator uses a devices internal high-speed clock oscillator (hereafter the HOCO) to achieve communications with the device. Therefore, the HOCO is always in an oscillating state no matter how the HOCO-related registers are set.

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If there is a contention between switching of the HOCO frequency and memory access, the memory access operation is not guaranteed.

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If the debugger has been started up in user boot mode, do not control the high-speed on-chip oscillator power supply control register (HOCOPCR) to turn the power supply of the HOCO off. Otherwise the emulator will not be able to control the microcontroller.

 

[RX71M, RX64M]

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For products of these groups, the above note only applies when the FINE interface is in use.