R5F562N7BDLE datasheet(8/25 Pages) RENESAS

Part #	R5F562N7BDLE

Description	100 MHz 32-bit RX MCU with FPU, 165 DMIPS, up to 512-Kbyte Flash, Ethernet, USB 2.0

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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8 / 25 page

RX62N Group and RX621 Group

16-Bit SDRAM Connection and Access Examples

R01AN0585EJ0202 Rev.2.02

Page 8 of 22

Feb 14, 2014

RFA

DSL

SDRAM command

Auto refresh

cycle

SDCLK

DSL

RFA

DSL

Auto refresh

cycle

DSL

Auto refresh

interval

DSL: Device deselect command

RFA: Auto refresh command

REFW: "0011" = 4 cycles

REFC: "02EDh" = 749 cycles

Figure 4 Auto Refresh Timing

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