Hitachi SH7750 Hardware Manual page 482

Sh7750 series superh risc engine

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RTCSR.CKS2–0

External bus

Figure 13.40 Synchronous DRAM Auto-Refresh Timing

Rev. 6.0, 07/02, page 432 of 986

Refresh request cleared

by start of refresh cycle

Figure 13.39 Auto-Refresh Operation

RTCNT cleared to 0 when

RTCNT = RTCOR

Auto-refresh cycle

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