IDT70T3509M Integrated Device Technology, IDT70T3509M Datasheet - Page 15

• Manufacturer Part Number: IDT70T3509M
• Description: High-speed 2.5v 1024k X 36 Synchronous Dual-port Static Ram With 3.3v Or 2.5v Interface
• Manufacturer: Integrated Device Technology

Timing Waveform of Pipelined Read with Address Counter Advance
Timing Waveform of Flow-Through Read with Address Counter Advance
NOTES:
1. CE
2. If there is no address change via ADS = V
3. Address A
IDT70T3509M
High-Speed 2.5V
remains constant for subsequent clocks.
value of a A
sure that A
transition reflects An = 7FFFF
0
DATA
, OE, BEn = V
DATA
A
CNTEN
0 -
A
CNTEN
0 -
A
A
CLK
A
ADS
CLK
ADS
19
OUT
19
19
OUT
18
A
19
(3)
18
(3)
19
must be managed as part of a full depth counter implementation using the IDT70T3509M. For physical addresses 00000
is actively driven from 0-to-1 or 1-to-0 and held as needed at the appropriate address boundaries for full depth counter operation. As shown this
is 0, while for physical addresses 80000
Qx - 1
IL
; CE
Qx
t
t
SAD
t
1024K x 36 Dual-Port Synchronous Static RAM
t
SA
EXTERNAL
SAD
SA
(2)
ADDRESS
EXTERNAL
1
(2)
ADDRESS
An
, R/W, and REPEAT = V
An
READ
t
READ
t
t
HAD
t
HAD
HA
HA
t
t
DC
H
t
CH1
CH2
or FFFFF
t
t
CD1
t
CYC1
CYC2
t
t
CL2
CL1
H
t
Qx
t
SA
IL
.
SA
(loading a new address) or CNTEN = V
Qn
t
IH
CD2
.
t
READ WITH COUNTER
DC
H
through FFFFF
Qn
READ WITH COUNTER
Qn + 1
(3)
H
the value of A
6.42
(3)
15
Qn + 1
t
t
SCN
SAD
Qn + 2
t
IL
t
HCN
HAD
(advancing the address), i.e. ADS = V
COUNTER
19
HOLD
is 1. The user needs to keep track of the device counter and make
t
t
SCN
SAD
t
t
HCN
HAD
Qn + 2
COUNTER
Qn + 3
HOLD
(2)
COUNTER
(2)
READ
WITH
Commercial Temperature Range
IH
COUNTER
and CNTEN = V
5682 drw 15a
READ
WITH
5682 drw 16a
H
Qn + 3
Qn + 4
through 7FFFF
,
IH
,
, then the data
(1)
H
the
(1)