参数资料
型号: IDT71321LA25PF
厂商: IDT, Integrated Device Technology Inc
文件页数: 2/17页
文件大小: 0K
描述: IC SRAM 16KBIT 25NS 64TQFP
标准包装: 45
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,异步
存储容量: 16K (2K x 8)
速度: 25ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: 0°C ~ 70°C
封装/外壳: 64-LQFP
供应商设备封装: 64-TQFP(14x14)
包装: 托盘
其它名称: 71321LA25PF
IDT71321SA/LA and IDT71421SA/LA
High Speed 2K x 8 Dual-Port Static RAM with Interrupts
Description
The IDT71321/IDT71421 are high-speed 2K x 8 Dual-Port Static
RAMs with internal interrupt logic for interprocessor communications.
The IDT71321 is designed to be used as a stand-alone 8-bit Dual-
Port Static RAM or as a "MASTER" Dual-Port Static RAM together
with the IDT71421 "SLAVE" Dual-Port in 16-bit-or-more word width
systems. Using the IDT MASTER/SLAVE Dual-Port Static RAM ap-
proach in 16-or-more-bit memory system applications results in full
speed, error-free operation without the need for additional discrete
logic.
Both devices provide two independent ports with separate control,
Pin Configurations (1,2,3)
INDEX
Industrial and Commercial Temperature Ranges
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.
Fabricated using IDT's CMOS high-performance technology, these
devices typically operate on only 325mW of power. Low-power (LA)
versions offer battery backup data retention capability, with each Dual-
Port typically consuming 200μW from a 2V battery.
The IDT71321/IDT71421 devices are packaged in 52-pin PLCCs,
64-pin TQFPs, and 64-pin STQFPs.
A 1L
A 2L
46
8 7 6 5 4 3 2 1 52 51 50 49 48 47
9 45
OE R
A 0R
A 3L
A 4L
A 5L
10
11
12
44
43
42
A 1R
A 2R
A 3R
A 6L
A 7L
A 8L
A 9L
I/O 0L
I/O 1L
I/O 2L
13
14
15
16
17
18
19
IDT71321/421J
J52-1 (4)
PLCC
Top View (5)
41
40
39
38
37
36
35
A 4R
A 5R
A 6R
A 7R
A 8R
A 9R
NC
I/O 3L
20 34
21 22 23 24 25 26 27 28 29 30 31 32 33
I/O 7R
2691 drw 02
INDEX
,
OE L
A 0L
A 1L
A 2L
A 3L
1
2
3
4
5
48
47
46
45
44
OE R
A 0R
A 1R
A 2R
A 3R
A 4L
A 5L
A 6L
N/C
A 7L
A 8L
A 9L
6
7
8
9
10
11
12
IDT71321/421PF or TF
PN64-1 / PP64-1 (4)
64-Pin TQFP
64-Pin STQFP
Top View (5)
43
42
41
40
39
38
37
A 4R
A 5R
A 6R
N/C
A 7R
A 8R
A 9R
NOTES:
1. All V CC pins must be connected to power supply.
2. All GND pins must be connected to ground supply.
N/C
I/O 0L
I/O 1L
13
14
15
36
35
34
N/C
N/C
I/O 7R
3. J52-1 package body is approximately .75 in x .75 in x .17 in.
PN64-1 package body is approximately 14mm x 14mm x 1.4mm.
PP64-1 package body is approximately 10mm x 10mm x 1.4mm.
I/O 2L
16
33
I/O 6R
2691 drw 03
,
4. This package code is used to reference the package diagram.
5. This text does not indicate orientation of the actual part-marking.
6.42
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