tc59lm814 TOSHIBA Semiconductor CORPORATION, tc59lm814 Datasheet - Page 24

• Manufacturer Part Number: tc59lm814
• Description: 256mbits Network Fcram1
• Manufacturer: TOSHIBA Semiconductor CORPORATION

MULTIPLE BANK WRITE TIMING (CL = 3)
(BA0, BA1)
MULTIPLE BANK WRITE TIMING (CL = 4)
(BA0, BA1)
Command
Bank Add.
Command
Bank Add.
BL = 2
BL = 4
BL = 2
BL = 4
(input)
(input)
(input)
(input)
(input)
(input)
(input)
(input)
DQS
DQS
DQS
DQS
CLK
CLK
CLK
CLK
DQ
DQ
DQ
DQ
Bank “a”
Bank “a”
Note:
WRAa
WRAa
I
RCD
0
0
I
RCD
I
I
RBD
RBD
“×” is don’t care
I
RC
= 1 cycle
= 1 cycle
LALa
LALa
to the same bank must be satisfied.
= 2 cycles
= 2 cycles
1
×
1
×
means H or L.
WL = 2
Bank “b”
Bank “b”
I
WRAb
WRAb
RC
I
RC
2
2
= 5 cycles
WL = 3
t
I
= 5 cycles
DQSS
RAS
I
RAS
LALb
LALb
= 4 cycles
Da0
Da0 Da1 Da2 Da3 Db0 Db1 Db2 Db3
= 4 cycles
3
3
t
DQSS
Da1
×
×
WL = 2
DESL
DESL
Da0
Da0 Da1 Da2 Da3 Db0 Db1 Db2 Db3
4
4
WL = 3
t
DQSS
Da1
Bank “a”
Bank “a”
I
WRAa
WRAa
RCD
Db0 Db1
5
5
I
I
RCD
RBD
I
t
t
RBD
DQSS
= 1 cycle
DQSS
= 1 cycle
= 2 cycles
LALa
LALa
= 2 cycles
Db0 Db1
6
×
6
×
t
DQSS
WL = 2
Bank “c”
Bank “c”
WRAc
WRAc
TC59LM814/06CTG-50,-60
7
7
I
I
RCD
RCD
WL = 3
I
t
I
RBD
DQSS
RBD
= 1 cycle
= 1 cycle
LALc
LALc
= 2 cycles
= 2 cycles
Da0 Da1
Da0 Da1 Da2 Da3 Dc0 Dc1 Dc2
8
×
8
×
t
t
DQSS
DQSS
WL = 2
Bank “d”
Bank “d”
WRAd
WRAd
Da0 Da1
Da0 Da1 Da2 Da3 Dc0
9
9
2005-06-21 24/39
I
I
WL = 3
RCD
RCD
I
I
t
RBD
RBD
DQSS
= 1 cycle
= 1 cycle
LALd
LALd
= 2 cycles
= 2 cycles
Dc0 Dc1
10
10
×
×
Bank “b”
Bank “b”
WRAb
WRAb
Dc0
Rev 1.2
11
11