K1B3216BDD-FI700
| Model | K1B3216BDD-FI700 |
| Description | Memory IC, 2MX16, CMOS, PBGA54 |
| PDF file | Total 42 pages (File size: 735K) |
| Chip Manufacturer | SAMSUNG |
K1B3216BDD
ASYNCHRONOUS WRITE TIMING WAVEFORM in SYNCHRONOUS MODE
Fig.19 TIMING WAVEFORM OF WRITE CYCLE(Low ADV Type)
( OE=V
IH
, WAIT=High-Z, WE Controlled)
0
CLK
1
2
3
4
5
6
7
8
9
10
11
12
13
UtRAM
14
ADV
t
WC
Address
t
CW
CS
UB, LB
t
WLRL
WE
Data in
Read Latency 5
Data out
High-Z
High-Z
t
AS
t
DH
t
DW
Data Valid
t
AW
t
BW
t
WP
t
WR
(LOW ADV TYPE WRITE CYCLE - WE Controlled)
1. A wri
t
e occurs during the overlap(t
WP
) of low CS and low WE. A write begins when CS goes low and WE goes low with asserting UB
or LB for single byte operation or simultaneously asserting UB and LB for double byte operation. A write ends at the earliest transition
when CS goes high or WE goes high. The t
WP
is measured from the beginning of write to the end of write.
2. t
CW
is measured from the CS going low to the end of write.
3. t
AS
is measured from the address valid to the beginning of write.
4. t
WR
is measured from the end of write to the address change. t
WR
is applied in case a write ends with CS or WE going high.
5. Clock input does not have any affect to the write operation if the parameter tWLRL is met.
Table 23. ASYNCH. WRITE IN SYNCH. MODE AC CHARACTERISTICS
(Low ADV Type, WE Controlled)
Symbol
Min
t
WC
t
CW
t
AW
t
BW
t
WP
70
60
60
60
55
1)
Speed
Max
-
-
-
-
-
ns
ns
ns
ns
ns
t
WLRL
t
AS
t
WR
t
DW
t
DH
Units
Symbol
Min
1
0
0
30
0
Speed
Max
-
-
-
-
-
clock
ns
ns
ns
ns
Units
1. tWC(min)=90ns or t
WP
(min)=70ns for continuous write operation over 50 times.
- 23 -
Revision 1.0
April 2005
