Datasheet

SAM7S Series [DATASHEET]

6175KS–ATARM–25-Oct-12

9.9 PIO Controller

z One PIO Controller, controlling 32 I/O lines (21 for SAM7S32/16)

z Fully programmable through set/clear registers

z Multiplexing of two peripheral functions per I/O line

z For each I/O line (whether assigned to a peripheral or used as general-purpose I/O)

z Input change interrupt

z Half a clock period glitch filter

z Multi-drive option enables driving in open drain

z Programmable pull-up on each I/O line

z Pin data status register, supplies visibility of the level on the pin at any time

z Synchronous output, provides Set and Clear of several I/O lines in a single write

9.10 Voltage Regulator Controller

The aim of this controller is to select the Power Mode of the Voltage Regulator between Normal Mode (bit 0 is cleared) or

Standby Mode (bit 0 is set).