AT91SAM9M10 ATMEL Corporation, AT91SAM9M10 Datasheet - Page 40

• Manufacturer Part Number: AT91SAM9M10
• Description: At91 Arm Thumb-based Microcontrollers
• Manufacturer: ATMEL Corporation

8.16
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PIO Controllers
AT91SAM9M10
• 5 PIO Controllers, PIOA, PIOB, PIOC, PIOD and PIOE, controlling a maximum of 160 I/O
• Each PIO Controller controls up to 32 programmable I/O Lines
• Fully programmable through Set/Clear Registers
• Multiplexing of two peripheral functions per I/O Line
• For each I/O Line (whether assigned to a peripheral or used as general purpose I/O)
• Synchronous output, provides Set and Clear of several I/O lines in a single write
Lines
– PIOA has 32 I/O Lines
– PIOB has 32 I/O Lines
– PIOC has 32 I/O Lines
– PIOD has 32 I/O Lines
– PIOE has 32 I/O Lines
– Input change interrupt
– Glitch filter
– Multi-drive option enables driving in open drain
– Programmable pull up on each I/O line
– Pin data status register, supplies visibility of the level on the pin at any time
6355AS–ATARM–06-Jan-10