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11090BS–ATARM–22-Oct-13
SAM3S8/SD8 Summary
10.13 Chip Identification
• Chip Identifier (CHIPID) registers permit recognition of the device and its revision.
• JTAG ID: 0x05B2D03F
10.14 UART
• Two-pin UART
– Implemented features are 100% compatible with the standard Atmel USART
– Independent receiver and transmitter with a common programmable Baud Rate
Generator
– 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
10.15 PIO Controllers
• 3 PIO Controllers, PIOA, PIOB and PIOC (100-pin version only) controlling a maximum of 79
I/O Lines
• Each PIO Controller controls up to 32 programmable I/O Lines
• 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)
– Input change interrupt
– Programmable Glitch filter
– Programmable debouncing 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
– Additional interrupt modes on a programmable event: rising edge, falling edge, low
level or high level
Table 10-1. SAM3S8/SD8 Hip IDs Register
Chip Name
Flash Size
(KBytes) Pin Count CHIPID_CIDR CHIPID_EXID
SAM3S8B (Rev A) 512 64 0x289B0A60 0x0
SAM3S8C (Rev A) 512 100 0x28AB0A60 0x0
SAM3SD8B (Rev A) 512 64 0x299B0A60 0x0
SAM3SD8C (Rev A) 512 100 0x29AB0A60 0x0
Table 10-2. PIO available according to pin count
Version 64 pin 100 pin
PIOA 32 32
PIOB 15 15
PIOC -32
