IDT70T3589 Integrated Device Technology, IDT70T3589 Datasheet - Page 19

• Manufacturer Part Number: IDT70T3589
• Description: 64k X 36 Sync, 3.3v/2.5v Dual-port Ram, Interleaved I/o S
• Manufacturer: Integrated Device Technology

Timing Waveform of Write with Address Counter Advance
(Flow-through or Pipelined Inputs)
Timing Waveform of Counter Repeat
NOTES:
1. CE
2. CE
3. The "Internal Address" is equal to the "External Address" when ADS = V
4. No dead cycle exists during REPEAT operation. A READ or WRITE cycle may be coincidental with the counter REPEAT cycle: Address loaded by last valid
5. CNTEN = V
6. For Pipelined Mode user should add 1 cycle latency for outputs as per timing waveform of read cycle for pipelined operations.
IDT70T3519/99/89S
High-Speed 2.5V 256/128/64K x 36 Dual-Port Synchronous Static RAM
ADS load will be accessed. For more information on REPEAT function refer to Truth Table II.
written to during this cycle.
0
0
, BE
, BE
INTERNAL
ADDRESS
ADDRESS
INTERNAL
ADDRESS
ADDRESS
n
n
DATA
, and R/W = V
REPEAT
DATA
= V
CNTEN
DATA
CNTEN
IL
CLK
ADS
R/
OUT
IL
CLK
ADS
advances Internal Address from ‘An’ to ‘An +1’. The transition shown indicates the time required for the counter to advance. The ‘An +1’Address is
W
IN
; CE
(3)
IN
(4)
(3)
1
= V
t
t
SRPT
t
IL
SAD
t
t
SD
SA
SW
IH
; CE
D
An
.
0
t
t
t
t
t
t
t
HW
HRPT
HD
t
SA
SAD
HAD
HA
SD
1
An
WRITE TO
ADDRESS
An
Dn
EXTERNAL
and REPEAT = V
ADDRESS
t
t
CYC2
t
WRITE
ADS
t
HAD
An
HD
HA
t
CH2
t
SCN
t
CYC2
D
1
An
t
HCN
An+1
t
CL2
(7)
ADVANCE
COUNTER
WRITE TO
t
SCN
An+1
Dn + 1
IH
.
WITH COUNTER
t
HCN
D
WRITE
2
An+2
ADVANCE
COUNTER
WRITE TO
An+2
Dn + 1
An + 1
COUNTER HOLD
IL
D
3
and equals the counter output when ADS = V
6.42
WRITE
An+2
(1)
COUNTER
WRITE TO
19
HOLD
An+2
(2,6)
Dn + 2
READ LAST
An
ADDRESS
REPEAT
t
CD1
ADS
An
An
An + 2
Industrial and Commercial Temperature Ranges
Dn + 3
An+1
ADVANCE
COUNTER
WRITE WITH COUNTER
READ
An+1
An+1
An + 3
IH
.
An+2
COUNTER
ADVANCE
Dn + 4
READ
An+2
An+2
,
An + 4
5666 drw 17
An+2
COUNTER
APRIL 10, 2006
READ
HOLD
An+2
An+2
5666 drw 18