tc59lm814 TOSHIBA Semiconductor CORPORATION, tc59lm814 Datasheet - Page 26

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

x8
x16
DQ8~DQ15
SINGLE BANK WRITE with VARIABLE WRITE LENGTH (VW) CONTROL
(CL = 3, BL = 4, Sequential mode)
DQ0~DQ7
Command
Command
Address
Address
UDQS
UDQS
(input)
(input)
(input)
(input)
(input)
(input)
DQS
CLK
CLK
DQ
Note:
WRA
WRA
(Write First Two Words)
UA
UA
0
Upper byte: Write First Two Words
Lower byte: Write First One Word
DQS input must be continued till end of burst count even if some of laster data is masked.
Refer to "VW Truth Table".
LA=#3
UVW=2
VW=2
LVW=1
LA =#3
LAL
LAL
1
I
RC
Address #3 #0
Address #3 #0
Address #3
2
= 5cycles
DESL
DESL
D0 D1
D0 D1
D0
3
(#0)
Last three data are masked.
Last two data are masked.
Last two data are masked.
(#1)
(#1)
(#1)
4
(#2)
(#2)
(#2)
WRA
WRA
UA
UA
(Write First One Word)
5
Upper byte: Write First One Word
Lower byte: Write First One Word
UVW=1
LA=#1
VW=1
LVW=1
LA=#1
LAL
LAL
6
I
RC
TC59LM814/06CTG-50,-60
7
= 5cycles
DESL
DESL
D0
D0
D0
#1 (#2)
#1 (#2)
#1 (#2)
8
Last three data are masked.
Last three data are masked.
Last three data are masked.
(#3)
(#3)
(#3)
9
2005-06-21 26/39
(#0)
(#0)
(#0)
WRA
WRA
UA
UA
10
UVW=2
LA=#3
LVW=1
VW=2
LA=#3
LAL
LAL
Rev 1.2
11