Figure 481. Read Access Crossing Row Boundary; Figure 482. Write Access Crossing Row Boundary - ST STM32F405 Reference Manual

RM0090
SDNE
SDCLK
A[12:0]
NRAS
NCAS
NWE
Data[31:0]
SDNE
SDCLK
A[12:0]
NRAS
NCAS
NWE
Data[31:0]

Figure 481. Read access crossing row boundary

Row n
Col a
Dna
Precharge

Figure 482. Write access crossing row boundary

Cna Colb
Dna
RM0090 Rev 18
TRP = 3
Row n +1
Activate Row
TRP = 3
Row n+1
Dnb
Activate Row
Precharge
Flexible memory controller (FMC)
TRCD = 3 CAS latency = 2
Col a Col b
Dn+1 a
Read Command
TRCD = 3
Cola Colb
Dn+1a
Dn+1b
Write command
MS30446V2
MS30447V2
1669/1749
1682