70T3539MS133BC IDT, 70T3539MS133BC Datasheet - Page 17

• Manufacturer Part Number: 70T3539MS133BC
• Description: SRAM 512K X 36 STD-PWR, 2.5V DUAL PORT RAM
• Manufacturer: IDT
• Series: IDT70T3539Mr
• Type: Dual Port RAMr

Specifications of 70T3539MS133BC

• Memory Size: 18 Mbit
• Organization: 512 K x 36
• Access Time: 4.2 ns
• Supply Voltage - Max: 2.6 V
• Supply Voltage - Min: 2.4 V
• Maximum Operating Current: 740 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: BGA-256
• Interface: LVTTL
• Maximum Clock Frequency: 133 MHz
• Memory Type: Synchronous
• Part # Aliases: IDT70T3539MS133BC

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.
IDT70T3539M
High-Speed 2.5V 512K 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
ADDRESS
INTERNAL
ADDRESS
ADDRESS
INTERNAL
ADDRESS
n
n
DATA
, and R/W = V
REPEAT
= V
DATA
CNTEN
DATA
CNTEN
IL
CLK
ADS
R/
OUT
IL
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
CLK
ADS
; CE
W
IN
IN
(3)
(4)
(3)
1
= V
t
SRPT
t
IL
t
SAD
t
t
SD
IH
SA
SW
; CE
D
An
.
0
t
t
t
t
t
t
t
HW
HRPT
HD
SAD
t
HAD
SA
HA
SD
1
An
WRITE TO
ADDRESS
An
Dn
EXTERNAL
and REPEAT = V
ADDRESS
t
t
CYC2
ADS
t
WRITE
t
HAD
An
HD
HA
t
CH2
t
SCN
t
CYC2
D
1
An
t
HCN
An+1
t
CL2
ADVANCE
COUNTER
WRITE TO
(7)
t
SCN
An+1
Dn + 1
IH
.
WITH COUNTER
t
N
HC
D
WRITE
2
An+2
ADVANCE
COUNTER
WRITE TO
An+2
Dn + 1
COUNTER HOLD
An + 1
D
IL
3
(1)
and equals the counter output when ADS = V
6.42
WRITE
An+2
COUNTER
WRITE TO
17
HOLD
An+2
(2,6)
Dn + 2
READ LAST
ADDRESS
An
REPEAT
t
CD1
ADS
An
An
An + 2
Industrial and Commercial Temperature Ranges
Dn + 3
An+1
COUNTER
ADVANCE
WRITE WITH COUNTER
READ
An+1
An+1
An + 3
IH
An+2
COUNTER
ADVANCE
.
Dn + 4
READ
An+2
An+2
,
An + 4
5678 drw 17
An+2
COUNTER
HOLD
READ
An+2
An+2
5678 drw 18
,
,