SDRAM MT48LC16M16A2 Configuration

 



Core

Freq ( Hz)

Cycle in ns

MCK

48 000 000

20,83

 

50 000 000

20

 

SDRAM Address

 

 

AT91SAM7SE

Column Addressing

 

512 (A0-A8)

9

Row Addressing

 

8K (A0-12)

13

Banks

 

4

1

 

SDRAM timing

device

MT48LC16M16A2

 

 

 

AT91SAM7SE

Choice

 

SDRC_CR

7E

75

Nb cycles

value (ns)

min

Max

 

 

CAS

133 Mhz (2)

100 Mhz (2)

2

41,67

2

2

2

 

Twr

1 cycle + 7ns

1 cycle + 7.5ns

2

41,67

2

15

2

 

Trc

60 ns

66 ns

4

83,33

2

15

4

 

Trp (TRFC)

66 Ns

66 ns

4

83,33

2

15

4

 

Trcd

10 ns

20 ns

1

20,83

2

15

2

 

Tras

37 ns

44 ns

3

62,50

2

15

3

 

Txsr

67 ns

75 ns

4

83,33

2

15

4

 

 

 

 

 

 

 

 

 

Refresh period (8,192 rows)

 

 

 

 

 

 

 

Time ms

Nb row

Refresh period µs

 

 

 

 

 

 

64

8192

7,8125

375,00

 

 

 

 

 

Freq Mhz

48

8

384

2,40%