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IDT70261S Datasheet

HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM

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HIGH-SPEED
IDT70261S/L
16K x 16 DUAL-PORT
STATIC RAM WITH INTERRUPT
LEAD FINISH (SnPb) ARE IN EOL PROCESS - LAST TIME BUY EXPIRES JUNE 15, 2018
Features
True Dual-Ported memory cells which allow simultaneous
access of the same memory location
High-speed access
– Commercial: 15/20/25/35/55ns (max.)
– Industrial 20/25ns (max.)
Low-power operation
– IDT70261S
Active: 750mW (typ.)
Standby: 5mW (typ.)
– IDT70261L
Active: 750mW (typ.)
Standby: 1mW (typ.)
Separate upper-byte and lower-byte control for multiplexed
bus compatibility
IDT70261 easily expands data bus width to 32 bits or more
using the Master/Slave select when cascading more than
one device
M/S = H for BUSY output flag on Master,
M/S = L 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
TTL-compatible, single 5V (±10%) power supply
Available in 100-pin Thin Quad Flatpack
Industrial temperature range (-40OC to +85OC) is available
for selected speeds
Green parts available. See ordering information
Functional Block Diagram
R/WL
UBL
R/WR
UBR
LBL
CEL
OEL
LBR
CER
OER
I/O8L-I/O15L
I/O0L-I/O7L
BUSYL(1,2)
I/O
Control
I/O
Control
A13L
A0L
Address
Decoder
14
CEL
OEL
R/WL
MEMORY
ARRAY
ARBITRATION
INTERRUPT
SEMAPHORE
LOGIC
14
SEML
INTL (2)
NOTES:
1. (MASTER): BUSY is output; (SLAVE): BUSY is input.
2. BUSY and INT outputs are non-tri-stated push-pull.
M/S
Address
Decoder
CER
OER
R/WR
©2018 Integrated Device Technology, Inc.
1
I/O8R-I/O15R
I/O0R-I/O7R
BUSYR(1,2)
A13R
A0R
SEMR
INTR(2)
3039 drw 01
JUNE 2018
DSC 3039/12


Integrated Device Technology Electronic Components Datasheet

IDT70261S Datasheet

HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM

No Preview Available !

IDT70261S/L
High-Speed 16K x 16 Dual-Port Static RAM with Interrupt
Industrial and Commercial Temperature Ranges
Description
The IDT70261 is a high-speed 16K x 16 Dual-Port Static RAM. The
IDT70261 is designed to be used as a stand-alone Dual-Port RAM or as
a combination MASTER/SLAVE Dual-Port RAM for 32-bit-or-more word
systems. Using the IDT MASTER/SLAVE Dual-Port RAM approach in 32-
bit or wider memory system applications results in full-speed, error-free
operation without the need for additional discrete logic.
This device provides two independent ports with separate control,
address, and I/O pins that permit independent, asynchronous access for
reads or writes to any location in memory. An automatic power down
featurecontrolledby CEpermitstheon-chipcircuitryofeachporttoenter
a very low standby power mode.
Fabricated using CMOS high-performance technology, these de-
vices typically operate on only 750mW of power.
The IDT70261 is packaged in a 100-pin TQFP.
Pin Configurations(1,2,3)
Index
N/C
N/C
N/C
N/C
I/O10L
I/O11L
I/O12L
I/O13L
GND
I/O14L
I/O15L
VCC
GND
I/O0R
I/O1R
I/O2R
VCC
I/O3R
I/O4R
I/O5R
I/O6R
N/C
N/C
N/C
N/C
1100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 7675
2 74
3 73
4 72
5 71
6 70
7 69
8 68
9 67
10 66
11
IDT70261PF
65
12
PN100(4)
64
13
100-Pin TQFP
63
14
Top View(5)
62
15 61
16 60
17 59
18 58
19 57
20 56
21 55
22 54
23 53
24 52
25 51
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
N/C
N/C
N/C
A6L
A5L
A4L
A3L
A2L
A1L
A0L
INTL
BUSYL
GND
M/S
BUSYR
INTR
A0R
A1R
A2R
A3R
A4R
A5R
N/C
N/C
N/C
3039 drw 02a
NOTES:
1. All VCC pins must be connected to power supply.
2. All GND pins must be connected to ground supply.
3. Package body is approximately 14mm x 14mm x 1.4mm.
4. This package code is used to reference the package diagram.
5. This text does not indicate orientation of the actual part-marking.
Pin Names
Left Port
Right Port
CEL
R/WL
CER
R/WR
OEL
A0L - A13L
OER
A0R - A13R
I/O0L - I/O15L
I/O0R - I/O15R
SEML
SEMR
UBL UBR
LBL LBR
INTL INTR
BUSYL
BUSYR
M/S
VCC
GND
6.242
Names
Chip Enable
Read/Write Enable
Output Enable
Address
Data Input/Output
Semaphore Enable
Upper Byte Select
Lower Byte Select
Interrupt Flag
Busy Flag
Master or Slave Select
Power
Ground
3039 tbl 01


Part Number IDT70261S
Description HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM
Maker IDT
Total Page 20 Pages
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