Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet

29

SAM9G25 [DATASHEET]

11032D–ATARM–10-Mar-2014



Slow Clock mode supported



Supports 4-bank and 8-bank DDR2, LPDDR, SDR and LPSDR



Numerous Configurations Supported



2K, 4K, 8K, 16K Row Address Memory Parts



SDRAM with 8 Internal Banks



SDR-SDRAM with 32-bit Data Path



DDR2/LPDDR with 16-bit Data Path



One Chip Select for SDRAM Device (256 Mbyte Address Space)



Programming Facilities



Multibank Ping-pong Access (Up to 8 Banks Opened at Same Time = Reduces Average Latency of 
Transactions)



Timing Parameters Specified by Software



Automatic Refresh Operation, Refresh Rate is Programmable



Automatic Update of DS, TCR and PASR Parameters (LPSDR)



Energy-saving Capabilities



Self-refresh, Power-down and Deep Power Modes Supported



SDRAM Power-up Initialization by Software



CAS Latency of 2, 3 Supported



Auto Precharge Command Not Used



SDR-SDRAM with 16-bit Datapath and Eight Columns Not Supported



Clock Frequency Change in Precharge Power-down Mode Not Supported