ATSAM3S ATMEL [ATMEL Corporation], ATSAM3S Datasheet - Page 42

• Manufacturer Part Number: ATSAM3S
• Description: AT91 ARM Cortex M3-based Processor
• Manufacturer: ATMEL [ATMEL Corporation]

10.14 UART
10.15 PIO Controllers
42
SAM3S Summary
Table 10-2.
• Two-pin UART
• 3 PIO Controllers, PIOA, PIOB and PIOC (100-pin version only) controlling a maximum of 79
• Fully programmable through Set/Clear Registers
• Multiplexing of four 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
I/O Lines
Version
– Implemented features are 100% compatible with the standard Atmel USART
– Independent receiver and transmitter with a common programmable Baud Rate
– Even, Odd, Mark or Space Parity Generation
– Parity, Framing and Overrun Error Detection
– Automatic Echo, Local Loopback and Remote Loopback Channel Modes
– Support for two PDC channels with connection to receiver and transmitter
– Input change, rising edge, falling edge, low level and level interrupt
– Debouncing and Glitch filter
– Multi-drive option enables driving in open drain
– Programmable pull-up or pull-down on each I/O line
– Pin data status register, supplies visibility of the level on the pin at any time
PIOB
PIOC
PIOA
Generator
PIO available according to pin count
48 pin
21
13
-
64 pin
32
15
-
100 pin
32
15
32
6500AS–ATARM–11-Dec-09