IDT70261L20PF IDT, Integrated Device Technology Inc, IDT70261L20PF Datasheet - Page 2

• Manufacturer Part Number: IDT70261L20PF
• Description: IC SRAM 256KBIT 20NS 100TQFP
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT70261L20PF

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 256K (16K x 16)
• Speed: 20ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 70261L20PF

NOTES:
1. All V
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.
Description
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.
Pin Configurations
11/16/01
IDT70261S/L
High-Speed 16K x 16 Dual-Port Static RAM with Interrupt
Index
I/O
I/O
I/O
I/O
I/O
I/O
The IDT70261 is a high-speed 16K x 16 Dual-Port Static RAM. The
This device provides two independent ports with separate control,
I/O
I/O
I/O
I/O
I/O
I/O
I/O
GND
GND
V
V
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
10L
11L
12L
13L
14L
15L
CC
CC
0R
1R
2R
3R
4R
5R
6R
CC
pins must be connected to power supply.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
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
(1,2,3)
100-Pin TQFP
IDT70261PF
PN100-1
Top View
(4)
(5)
6.42
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
2
Pin Names
address, and I/O pins that permit independent, asynchronous access for
reads or writes to any location in memory. An automatic power down
feature controlled by CE permits the on-chip circuitry of each port to enter
a very low standby power mode.
devices typically operate on only 750mW of power.
3039 drw 02
R/W
I/O
CE
OE
A
SEM
UB
LB
INT
BUSY
0L
N/C
N/C
N/C
A
A
A
A
A
A
A
INT
BUSY
GND
M/S
BUSY
INT
A
A
A
A
A
A
N/C
N/C
N/C
0L
L
Fabricated using IDT’s CMOS high-performance technology, these
The IDT70261 is packaged in a 100-pin TQFP.
L
L
L
6L
5L
4L
3L
2L
1L
0L
0R
1R
2R
3R
4R
5R
L
L
- A
L
Left Port
- I/O
L
R
L
13L
L
R
15L
,
Industrial and Commercial Temperature Ranges
GND
M/S
V
CC
CE
R/W
OE
A
I/O
SEM
UB
LB
INT
BUSY
0R
0R
R
R
R
R
R
R
Right Port
- A
R
- I/O
R
13R
15R
Chip Enable
Read/Write Enable
Output Enable
Data Input/Output
Semaphore Enable
Upper Byte Select
Lower Byte Select
Interrupt Flag
Busy Flag
Master or Slave Select
Power
Ground
Address
Names
3039 tbl 01