EP9307 Datasheet, PDF (18/48 Pages) Cirrus Logic – ARM9 SOC WITH ETHERNET USB DISPLAY AND TOUCHSCREEN

EP9307
ARM9 SOC with Ethernet, USB, Display and Touchscreen
SDRAM Auto Refresh Cycle
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
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DS667PP3