Status Of Pins In A Reset - Fujitsu MB90460 Series Hardware Manual

4.6

Status of Pins in a Reset

This section describes the status of pins when a reset occurs.
■ Status of Pins during a Reset
The status of pins during a reset depends on the settings of mode pins (MD2 to MD0 = 011
●
When internal vector mode has been set:
All I/O pins (resource pins) are high impedance, and mode data is read from the internal ROM.
■ Status of Pins after Mode Data is read
The status of pins after mode data has been read depends on the mode data (M1 and M0 = 00
●
When single-chip mode has been selected (M1, M0 = 00
All I/O pins (resource pins) are high impedance, and mode data is read from the internal ROM.
Note:
For those pins that change to high impedance when a reset cause is generated, take care that
devices connected to them do not malfunction.
See Table 6.7-1 for information about the state of pins during a reset
):
B
CHAPTER 4 RESET
).
B
).
B
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