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70V631S15PRF

Description
Sram 256kx18 std-pwr 3.3V dual-port ram
Categorysemiconductor    Other integrated circuit (IC)   
File Size198KB,23 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
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70V631S15PRF Overview

Sram 256kx18 std-pwr 3.3V dual-port ram

70V631S15PRF Parametric

Parameter NameAttribute value
ManufactureIDT (Integrated Device Technology)
Product CategorySRAM
RoHSN
Package / CaseTQFP-128
PackagingBulk
Factory Pack Quantity6
HIGH-SPEED 3.3V 256K x 18
ASYNCHRONOUS DUAL-PORT
STATIC RAM
IDT70V631S
Features
Functional Block Diagram
UB
L
LB
L
True Dual-Port memory cells which allow simultaneous
access of the same memory location
High-speed access
– Commercial: 10/12/15ns (max.)
– Industrial: 12ns (max.)
Dual chip enables allow for depth expansion without
external logic
IDT70V631 easily expands data bus width to 36 bits or
more using the Master/Slave select when cascading more
than one device
M/S = V
IH
for
BUSY
output flag on Master,
M/S = V
IL
for
BUSY
input on Slave
Busy and Interrupt Flags
On-chip port arbitration logic
Full on-chip hardware support of semaphore signaling
between ports
Fully asynchronous operation from either port
Separate byte controls for multiplexed bus and bus
matching compatibility
Supports JTAG features compliant to IEEE 1149.1
– Due to limited pin count, JTAG is not supported on the
128-pin TQFP package.
LVTTL-compatible, single 3.3V (±150mV) power supply for
core
LVTTL-compatible, selectable 3.3V (±150mV)/2.5V (±100mV)
power supply for I/Os and control signals on each port
Available in a 128-pin Thin Quad Flatpack, 208-ball fine
pitch Ball Grid Array, and 256-ball Ball Grid Array
Industrial temperature range (–40°C to +85°C) is available
for selected speeds
Green parts available, see ordering information
UB
R
LB
R
R/
W
L
B
E
0
L
B
E
1
L
B
E
1
R
B
E
0
R
R/
W
R
CE
0L
CE
1L
CE
0 R
CE
1 R
OE
L
Dout0-8_L
Dout9-17_L
Dout0-8_R
Dout9-17_R
OE
R
256K x 18
MEMORY
ARRAY
I/O
0L
- I/O
17L
Din_L
Din_R
I/O
0R
- I/O
17R
A
17L
A
0L
Address
Decoder
ADDR_L
ADDR_R
Address
Decoder
A
17R
A
0R
OE
L
CE
0L
CE
1L
R/W
L
BUSY
L
SEM
L
INT
L
ARBITRATION
INTERRUPT
SEMAPHORE
LOGIC
OE
R
CE
0 R
CE
1 R
R/W
R
BUSY
R
M/S
SEM
R
INT
R
TDI
TDO
JTAG
TMS
TCK
TRST
5622 drw 01
NOTES:
1.
BUSY
is an input as a Slave (M/S=V
IL
) and an output when it is a Master (M/S=V
IH
).
2.
BUSY
and
INT
are non-tri-state totem-pole outputs (push-pull).
OCTOBER 2013
DSC-5622/7
1
©2013 Integrated Device Technology, Inc.
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