Hardware manual

Microcomputer Technical Q&A

Q&A No.: QAH8S-049

Category: Power-Down State

Subject: Hardware Standby Mode at Power-On

Question

How can hardware standby mode be entered at power-on?

Answer

Drive the STBY pin low at power-on.

Note: The mode pins (MD2 to MD0) must be set to the prescribed input state at this time.

(In the H8S/2655 Series, at least one of pins MD2 to MD0 should be driven high, and one

of modes 1 to 7 must be selected as the MCU operating mode.)

Applicable Products

Applicability Series Applicability Series Applicability Series

Yes Entire H8S Series H8S/2655 H8S/2350

H8S/2355 H8S/2357 H8S/2345

H8S/2245 H8S/2148 H8S/2144

H8S/2138 H8S/2134 H8S/2128

H8S/2124 — — — —