r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 512

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

Section 12 DDR-SDRAM Interface (DDRIF)
Rev. 1.00 Oct. 01, 2007 Page 446 of 1956
REJ09B0256-0100
Figure 12.13 Basic DDRIF Timing (Auto-Refresh (REFA) Enter/Exit to Bank Activate
Command
MA13-11
(MCLK)
MA9-0
MRAS
MCAS
MCLK
BA1-0
MA10
MWE
MCS
CKE
REFA
T0
t
RFC
T1
= 11 to 15 cycles
(ACT))
Auto-refresh
REFA
t
RFC
= 11 to 15 cycles
Bank
ACT
Row
Row