RX62N Datasheet, PDF (8/25 Pages) Renesas Technology Corp – 100 MHz 32-bit RX MCU with FPU, 165 DMIPS, up to 512-Kbyte Flash, Ethernet, USB 2.0

RX62N Group and RX621 Group
16-Bit SDRAM Connection and Access Examples
Auto refresh
cycle
Auto refresh
interval
Auto refresh
cycle
SDCLK
SDRAM command _{RFA DSL DSL} DSL
RFA DSL DSL DSL
REFW: "0011" = 4 cycles REFC: "02EDh" = 749 cycles
DSL: Device deselect command
RFA: Auto refresh command
Figure 4 Auto Refresh Timing
R01AN0585EJ0202 Rev.2.02
Feb 14, 2014
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