IDT70V3589 IDT [Integrated Device Technology], IDT70V3589 Datasheet - Page 18

• Manufacturer Part Number: IDT70V3589
• Description: HIGH-SPEED 3.3V 128/64K x 36 SYNCHRONOUS DUAL-PORT STATIC RAM WITH 3.3V OR 2.5V INTERFACE
• Manufacturer: IDT [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. Addresses do not have to be accessed sequentially since ADS = V
5. Output state (High, Low, or High-impedance) is determined by the previous cycle control signals.
6. 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
7. CNTEN = V
IDT70V3599/89S
High-Speed 3.3V 128/64K x 36 Dual-Port Synchronous Static RAM
use only.
ADS load will be accessed. Extra cycles are shown here simply for clarification. 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
= V
DATA
DATA
CNTEN
CNTEN
IL
IL
CLK
ADS
ADS
CLK
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
R/
OUT
; CE
IN
W
IN
(3)
(3)
1
= V
(5)
IL
IH
; CE
t
Ax
SRPT
.
t
t
t
SAD
SA
SD
1
An
Dn
EXTERNAL
ADDRESS
and REPEAT = V
t
HRPT
t
WRITE
t
t
HAD
HD
t
HA
CH2
t
EXECUTE
CH2
REPEAT
t
CYC2
t
CYC2
An
t
CL2
t
t
t
CL2
(7)
SCN
SAD
t
t
(6)
SD
t
SW
SCN
Dn + 1
D
IH
t
0
t
.
HCN
t
HAD
t
WITH COUNTER
HW
t
HD
LAST ADS LOAD
HCN
LAST ADS
ADDRESS
WRITE
WRITE
Dn + 1
IL
constantly loads the address on the rising edge of the CLK; numbers are for reference
An + 1
COUNTER HOLD
IL
(1)
LAST ADS
ADDRESS
and equals the counter output when ADS = V
READ
WRITE
6.42
18
(2)
Dn + 2
ADDRESS + 1
LAST ADS +1
LAST ADS
READ
An + 2
Industrial and Commercial Temperature Ranges
t
SA
Q
Dn + 3
An
LAST
WRITE WITH COUNTER
t
HA
ADDRESS n
READ
An
An + 3
IH
(4)
.
Q
An + 1
LAST+1
Dn + 4
ADDRESS n+1
READ
An + 1
An + 4
5617 drw 18
5617 drw 19
An + 2
Qn