6
SAM9N12/SAM9CN11/SAM9CN12 [SUMMARY DATASHEET]
11063HS–ATARM–27-Sep-13
External Bus Interface - EBI
D0 -D15 Data Bus I/O
D16 -D31 Data Bus I/O
A0 - A25 Address Bus Output
NWAIT External Wait Signal Input Low
Static Memory Controller - SMC
NCS0 - NCS5 Chip Select Lines Output Low
NWR0 - NWR3 Write Signal Output Low
NRD Read Signal Output Low
NWE Write Enable Output Low
NBS0 - NBS3 Byte Mask Signal Output Low
NAND Flash Support
NFD0-NFD15 NAND Flash I/O I/O
NANDCS NAND Flash Chip Select Output Low
NANDOE NAND Flash Output Enable Output Low
NANDWE NAND Flash Write Enable Output Low
DDR2/SDRAM/LPDDR Controller
SDCK,#SDCK DDR2/SDRAM differential clock Output
SDCKE DDR2/SDRAM Clock Enable Output High
SDCS DDR2/SDRAM Controller Chip Select Output Low
BA[0..2] Bank Select Output Low
SDWE DDR2/SDRAM Write Enable Output Low
RAS - CAS Row and Column Signal Output Low
SDA10 SDRAM Address 10 Line Output
DQS[0..1] Data Strobe I/O
DQM[0..3] Write Data Mask Output
High Speed Multimedia Card Interface - HSMCI
MCI_CK Multimedia Card Clock I/O
MCI_CDA Multimedia Card Slot Command I/O
MCI_DA0 -
MCI_DA7
Multimedia Card Slot Data I/O
Universal Synchronous Asynchronous Receiver Transmitter- USARTx
SCKx USARTx Serial Clock I/O
TXDx USARTx Transmit Data Output
RXDx USARTx Receive Data Input
RTSx USARTx Request To Send Output
CTSx USARTx Clear To Send Input
Table 3-1. Signal Description List (Continued)
Signal Name Function Type Active Level
