Skip to main content
Renesas Electronics America - Knowledgebase

How is the processor's state set to watch mode with no sub-oscillator?

Latest Updated:03/25/2009


Please tell us the port condition when the processor transfers to watch mode without the sub-oscillator being present on the H8/3802, H8/38004 and H8/38024 Groups?


The port maintains the status it had immediately before the transfer for both input and output port. It is not recommended to transfer to the sub-clock type mode without connecting a sub-oscillator. If not connecting any sub-oscillator, be sure to fix X1 pin to GND.
Suitable Products
H8/300L Super Low Power
H8/38024R, 38024, 38024S, 38124
H8/3802, 38002S, 38004, 38104
H8 Super Low Power