參數(shù)資料
型號: CY7C1021B-15VXE
廠商: CYPRESS SEMICONDUCTOR CORP
元件分類: DRAM
英文描述: 1-Mbit (64K x 16) Static RAM
中文描述: 64K X 16 STANDARD SRAM, 15 ns, PDSO44
封裝: 0.400 INCH, LEAD FREE, SOJ-44
文件頁數(shù): 2/10頁
文件大小: 314K
代理商: CY7C1021B-15VXE
CY7C1021B
Document #: 38-05145 Rev. *C
Page 2 of 10
Pin Configurations
Selection Guide
-12
12
140
-15
15
130
130
10
15
0.5
Maximum Access Time (ns)
Maximum Operating Current (mA)
Com’l/Ind’l
Automotive
Com’l/Ind’l
Automotive
L Version
Maximum CMOS Standby Current (mA)
10
0.5
WE
A
15
A
14
A
13
A
12
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
31
30
32
36
35
34
33
37
40
39
38
Top View
SOJ/TSOP II
41
44
43
42
16
17
29
28
V
CC
V
SS
I/O
5
I/O
6
A
4
A
3
A
2
A
1
A
0
OE
BHE
BLE
V
SS
V
CC
I/O
12
I/O
11
I/O
10
I/O
9
A
5
A
6
A
7
I/O
16
I/O
15
I/O
14
I/O
13
CE
I/O
1
I/O
2
I/O
3
I/O
4
NC
A
8
A
9
A
10
A
11
18
19
20
21
27
26
25
24
22
23
NC
I/O
7
I/O
8
Pin Definitions
Pin Name
A
0
–A
15
I/O
1
–I/O
16
SOJ, TSOP–Pin Number
1–5,18–21, 24–27, 42–44
7–10, 13–16, 29–32,
35–38
22, 23, 28
17
I/O Type
Input
Input/Output
Description
Address Inputs used to select one of the address locations.
Bidirectional Data I/O lines
. Used as input or output lines depending
on operation.
No Connect
s. Not connected to the die.
Input/Control
Write Enable Input, active LOW
. When selected LOW, a Write is
conducted. When deselected HIGH, a Read is conducted.
Input/Control
Chip Enable Input, active LOW
. When LOW, selects the chip. When
HIGH, deselects the chip.
Input/Control
Byte Write Select Inputs, active LOW
. BHE controls I/O
16
–I/O
9,
BLE controls I/O
8
–I/O
1
.
Input/Control
Output Enable, active LOW
. Controls the direction of the I/O pins.
When LOW, the I/O pins are allowed to behave as outputs. When
deasserted HIGH, I/O pins are tri-stated, and act as input data pins.
Ground
Ground for the device
.
Should be connected to ground of the
system.
Power Supply
Power Supply inputs to the device.
NC
WE
No Connect
CE
6
BHE, BLE
40, 39
OE
41
V
SS
12, 34
V
CC
11, 33
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