IDT70V3579S5BCI8 IDT, Integrated Device Technology Inc, IDT70V3579S5BCI8 Datasheet - Page 5

• Manufacturer Part Number: IDT70V3579S5BCI8
• Description: IC SRAM 1.125MBIT 5NS 256BGA
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT70V3579S5BCI8

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Synchronous
• Memory Size: 1.125M (32K x 36)
• Speed: 5ns
• Interface: Parallel
• Voltage - Supply: 3.15 V ~ 3.45 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 70V3579S5BCI8

Pin Names
Truth Table I—Read/Write and Enable Control
NOTES:
1. "H" = V
2. ADS, CNTEN, CNTRST =
3. OE is an asynchronous input signal.
4. It is possible to read or write any combination of bytes during a given access. A few representative samples have been illustrated here.
R/W
I/O
CLK
CE
OE
A
ADS
CNTEN
CNTRST
BE
IDT70V3579S
High-Speed 32K x 36 Dual-Port Synchronous Pipelined Static RAM
OE
0L
X
X
X
X
X
X
X
X
X
X
L
L
L
L
L
L
L
H
0L
0L
0L
L
L
- A
L
L
,
Left Port
- I/O
- BE
CE
V
14L
OPT
L
DDQL
L
CLK
1L
35L
3L
IH,
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
L
"L" = V
CE
H
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
V
V
IL,
0
DD
SS
CE
R/W
OE
A
I/O
CLK
ADS
CNTEN
CNTRST
BE
"X" = Don't Care.
0R
0R
0R
0R
R
CE
R
R
Right Port
- A
R
X
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
,
- I/O
- BE
CE
1
V
OPT
14R
R
X
DDQR
R
1R
.
35R
3R
BE
R
X
X
H
H
H
H
L
H
L
L
H
H
H
L
H
L
L
L
3
BE
X
X
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
Chip Enables
Read/Write Enable
Output Enable
Data Input/Output
Clock
Counter Enable
Counter Reset
Byte Enables (9-bit bytes)
Power (I/O Bus) (3.3V or 2.5V)
Option for selecting V
Power (3.3V)
Ground (0V)
Address
Address Strobe Enable
2
BE
X
X
H
H
L
H
H
L
H
L
H
L
H
H
L
H
L
L
1
(1)
BE
X
X
H
H
H
H
H
H
H
H
H
Names
L
L
L
L
L
L
L
0
R/W
DDQX
X
X
X
L
L
L
L
L
L
L
H
H
H
H
H
H
H
X
(1,2)
4830 tbl 01
I/O
Byte 3
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
(1)
D
D
D
D
D
D
OUT
OUT
OUT
27-35
IN
IN
IN
6.42
5
NOTES:
1. V
2. OPT
I/O
Byte 2
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
D
D
D
D
D
D
applying inputs on the I/Os and controls for that port.
then that port's I/Os and controls will operate at 3.3V levels and V
supplied at 3.3V. If OPT
operate at 2.5V levels and V
independent of one another—both ports can operate at 3.3V levels, both can
operate at 2.5V levels, or either can operate at 3.3V with the other at 2.5V.
OUT
OUT
OUT
18-26
IN
IN
IN
DD
, OPT
X
selects the operating voltage levels on that port. If OPT
X
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
Byte 1
I/O
, and V
D
D
D
D
D
D
OUT
OUT
OUT
9-17
IN
IN
IN
Industrial and Commercial Temperature Ranges
(1,2,3,4)
DDQX
X
Byte 0
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
I/O
D
D
D
must be set to appropriate operating levels prior to
is set to VIL (0V), then that port's I/Os and controls will
D
D
D
OUT
OUT
OUT
IN
IN
IN
0-8
DDQX
Deselected–Power Down
Deselected–Power Down
Read Byte 0 Only
Read Byte 1 Only
Read Byte 2 Only
Read Byte 3 Only
Read Lower 2 Bytes Only
Read Upper 2 Bytes Only
Read All Bytes
Outputs Disabled
must be supplied at 2.5V. The OPT pins are
All Bytes Deselected
Write to Byte 0 Only
Write to Byte 1 Only
Write to Byte 2 Only
Write to Byte 3 Only
Write to Lower 2 Bytes Only
Write to Upper 2 bytes Only
Write to All Bytes
MODE
X
is set to VIH (3.3V),
DDQX
4830 tbl 02
must be