EP9301 Datasheet, PDF (17/41 Pages) Cirrus Logic – Entry-level ARM9 System-on-chip Processor

SDRAM Auto Refresh Cycle
EP9301
Entry Level ARM9 System-on-Chip Processor
SDCLK
SDCSn
t_{clk_low}
t_d
7
b
t_{clk_high}
t_clkrf
t_h
d
e
RASn
CASn
SDWEn
Note: Chip select shown as bus to illustrate multiple devices being put into auto refresh in one access
Figure 5. SDRAM Auto Refresh Cycle Timing Measurement
DS636PP5
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