r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 280

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 6 Bus Controller (BSC)
6.8.9
Precharge State Count
When the interval specification from the PALL command to the next ACTV/REF command
cannot be satisfied, from one to four T
states can be selected by setting bits TPC1 and TPC0 in
p
DRACCR. Set the optimum number of T
cycles according to the synchronous DRAM connected
p
and the operating frequency of this LSI. Figure 6.59 shows the timing when two Tp states are
inserted.
Rev. 1.00 Sep. 19, 2008 Page 252 of 1270
REJ09B0466-0100