H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 207

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

thus repeated at fixed intervals determined by RTCOR and bits CKS2 to CKS0. Set a value in
RTCOR and bits CKS2 to CKS0 that will meet the refreshing interval specification for the DRAM
used.
When bits CKS2 to CKS0 are set, RTCNT starts counting up. RTCNT and RTCOR settings
should therefore be completed before setting bits CKS2 to CKS0.
Do not clear the CMF flag when refresh control is being performed (RFSHE = 1).
RTCNT operation is shown in figure 6.23, compare match timing in figure 6.24, and CBR refresh
timings in figure 6.25.
Refresh request
Refresh request signal
and CMF bit setting signal
RTCOR
H'00
RTCNT
RTCOR
RTCNT
Figure 6.24 Compare Match Timing
Figure 6.23 RTCNT Operation
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Rev. 3.00 Sep 15, 2006 page 173 of 988
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Section 6 Bus Controller
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REJ09B0330-0300