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參數(shù)資料
| 型號(hào)： | CY7C1046D |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 4-Mbit (1M x 4) Static RAM |
| 中文描述： | 4兆位（1米× 4）靜態(tài)RAM |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 391K |
| 代理商： | CY7C1046D |
4-Mbit (1M x 4) Static RAM
Functional Description
[1]
CY7C1046D
Cypress Semiconductor Corporation
Document #: 38-05705 Rev. *B
198 Champion Court
San Jose
,
CA 95134-1709
408-943-2600
Revised April 3, 2006
Features
Pin- and function-compatible with CY7C1046B
High speed
— t
AA
= 10 ns
CMOS for optimum speed/power
Low active power
— I
CC
= 90 mA @ 10 ns
Low CMOS Standby Power
— I
SB2
= 10 mA
Data Retention at 2.0 V
Automatic power-down when deselected
TTL-compatible inputs and outputs
Easy memory expansion with CE and OE features
Available in lead-free 400-mil-wide 32-pin SOJ package
The CY7C1046D is a high-performance CMOS static RAM
organized as 1M words by 4 bits. Easy memory expansion is
provided by an active LOW Chip Enable (CE), an active LOW
Output Enable (OE), and tri-state drivers. Writing to the device
is accomplished by taking Chip Enable (CE) and Write Enable
(WE) inputs LOW. Data on the four I/O pins (I/O
0
through I/O
3
)
is then written into the location specified on the address pins
(A
0
through A
19
).
Reading from the device is accomplished by taking Chip
Enable (CE) and Output Enable (OE) LOW while forcing Write
Enable (WE) HIGH. Under these conditions, the contents of
the memory location specified by the address pins will appear
on the I/O pins.
The four input/output pins (I/O
0
through I/O
3
) are placed in a
high-impedance state when the device is deselected (CE
HIGH), the outputs are disabled (OE HIGH), or during a write
operation (CE LOW, and WE LOW).
The CY7C1046D is available in a standard 400-mil-wide
32-pin SOJ package with center power and ground (revolu-
tionary) pinout.
Pin Configuration
Selection Guide
-10
10
90
10
Unit
ns
mA
mA
Maximum Access Time
Maximum Operating Current
Maximum CMOS Standby Current (mA)
Note:
1. For guidelines on SRAM system design, please refer to the ‘System Design Guidelines’ Cypress application note, available on the internet at www.cypress.com.
1
A
1
A
Logic Block Diagram
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
A
10
COLUMN
DECODER
R
S
INPUT BUFFER
POWER
DOWN
WE
OE
I/O
0
I/O
1
1M x 4
I/O
3
I/O
2
A
0
A
1
A
1
A
1
CE
A
1
A
1
1
2
3
4
5
6
7
8
9
10
11
12
13
21
20
22
25
24
23
28
27
26
Top View
SOJ
29
32
31
30
14
15
19
18
GND
I/O
1
A
1
A
2
A
3
A
4
CE
A
5
A
6
A
7
A
8
A
9
WE
V
CC
I/O
2
A
18
A
17
A
16
A
15
OE
I/O
3
A
12
A
11
A
14
A
13
A
0
I/O
0
V
CC
A
1
16
17
GND
A
10
NC
A
19
A
1
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