IDT70V9289L12PF IDT [Integrated Device Technology], IDT70V9289L12PF Datasheet - Page 16

• Manufacturer Part Number: IDT70V9289L12PF
• Description: HIGH-SPEED 3.3V 64K x18/x16 SYNCHRONOUS PIPELINED DUAL-PORT STATIC RAM
• Manufacturer: IDT [Integrated Device Technology]

Timing Waveform of Write with Address Counter Advance
(Flow-Through or Pipelined Outputs)
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 counter reset. A READ or WRITE cycle may be coincidental with the counter reset cycle. ADDR
7. CNTEN = V
Timing Waveform of Counter Reset (Pipelined Outputs)
IDT70V9389/289L
High-Speed 3.3V 64K x18/x16 Dual-Port Synchronous Pipelined Static RAM
are shown here simply for clarification.
The ‘An +1’ Address is written to during this cycle.
0
0
, UB, LB, and R/W = V
, UB, LB = V
INTERNAL
ADDRESS
ADDRESS
DATA
CNTRST
DATA
CNTEN
INTERNAL
ADDRESS
ADDRESS
IL
ADS
CLK
R/
OUT
advances Internal Address from ‘An’ to ‘An +1’. The transition shown indicates the time required for the counter to advance.
DATA
CNTEN
W
IN
IL
(4)
(3)
CLK
ADS
(5)
; CE
IN
(3)
(7)
1
t
= V
Ax
SRST
IL
(6)
IH
; CE
.
t
HRST
t
t
t
SA
SAD
SD
t
1
CH2
COUNTER
An
Dn
and CNTRST = V
EXTERNAL
ADDRESS
RESET
t
t
t
t
WRITE
HAD
HD
HA
CYC2
t
CH2
t
t
CL2
CYC2
t
t
t
SAD
SCN
t
SD
SW
(6)
An
t
D
CL2
(7)
t
t
0
t
HAD
HCN
t
HW
HD
Dn + 1
IH
ADDRESS 0
.
WITH COUNTER
WRITE
0
WRITE
IL
constantly loads the address on the rising edge of the CLK; numbers are for reference use only.
Dn + 1
IL
ADDRESS 0
An + 1
COUNTER HOLD
and equals the counter output when ADS = V
6.42
READ
16
(1)
WRITE
Dn + 2
ADDRESS 1
READ
1
An + 2
Industrial & Commercial Temperature Ranges
t
SA
An
Q
0
Dn + 3
t
HA
ADDRESS n
WRITE WITH COUNTER
READ
An
IH
An + 3
(2)
.
An + 1
Q
ADDRESS n+1
Dn + 4
0
1
will be accessed. Extra cycles
READ
An + 1
An + 4
4856 drw 16
4856 drw 17
An + 2
Qn