Status Of Pins In A Reset - Fujitsu MB90390 Series Hardware Manual

CHAPTER 7 RESETS
7.6

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).
●
When internal vector mode has been set: (MD2 to MD0 = 011
All I/O pins (resource pins) are high impedance, and mode data is read from the built-in 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 and M0 = 00
All I/O pins (resource pins) are high impedance, and mode data is read from the built-in ROM.
Note:
For those pins that change to high impedance when a reset cause is generated, confirm that devices
connected to the pins do not malfunction.
136
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B
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B
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B