70V659S12DRI IDT, 70V659S12DRI Datasheet - Page 12

• Manufacturer Part Number: 70V659S12DRI
• Description: SRAM 128Kx36 STD-PWR 3.3V DUAL-PORT RAM
• Manufacturer: IDT
• Series: IDT70V659/58/57Sr
• Type: Dual Port RAMr

Specifications of 70V659S12DRI

• Memory Size: 4 Mbit
• Organization: 128 K x 36
• Access Time: 12 ns
• Supply Voltage - Max: 3.45 V
• Supply Voltage - Min: 3.15 V
• Maximum Operating Current: 515 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: PQFP-208
• Interface: LVTTL
• Memory Type: Asynchronous
• Part # Aliases: IDT70V659S12DRI

DATA
BUSY
Waveform of Read Cycles
NOTES:
1. Timing depends on which signal is asserted last, OE, CE or BEn.
2. Timing depends on which signal is de-asserted first CE, OE or BEn.
3. t
4. Start of valid data depends on which timing becomes effective last t
5. SEM = V
Timing of Power-Up Power-Down
IDT70V659/58/57S
High-Speed 3.3V 128/64/32K x 36 Asynchronous Dual-Port Static RAM
ADDR
has no relation to valid output data.
BDD
BEn
R/W
OUT
OUT
CE
OE
delay is required only in cases where the opposite port is completing a write operation to the same address location. For simultaneous read operations BUSY
IH
.
CE
I
I
CC
SB
t
t
t
t
t
AA
ACE
AOE
LZ
ABE
(1)
(4)
t
(4)
(4)
PU
(4)
(5)
50%
AOE
t
RC
, t
ACE
, t
t
BDD
12
AA
or t
(3,4)
BDD
.
VALID DATA
t
PD
Industrial and Commercial Temperature Ranges
50%
(4)
4869 drw 07
t
HZ
(2)
t
.
OH
4869 drw 06
.