CY7C107
CY7C1007
1M x 1 Static RAM
memory expansion is provided by an active LOW Chip Enable
(CE) and three-state drivers. These devices have an automatic
power-down feature that reduces power consumption by more
than 65% when deselected.
Features
• High speed
— t = 12 ns
AA
Writing to the devices is accomplished by taking Chip Enable
(CE) and Write Enable (WE) inputs LOW. Data on the input pin
• CMOS for optimum speed/power
• Low active power
— 825 mW
(D ) is written into the memory location specified on the ad-
IN
dress pins (A through A ).
0
19
• Low standby power
— 275 mW
Reading from the devices is accomplished by taking Chip En-
able (CE) LOW while Write Enable (WE) remains HIGH. Under
these conditions, the contents of the memory location speci-
• 2.0V data retention (optional)
fied by the address pins will appear on the data output (D
pin.
)
OUT
100
W
µ
—
• Automatic power-down when deselected
• TTL-compatible inputs and outputs
The output pin (D
) is placed in a high-impedance state
OUT
when the device is deselected (CE HIGH) or during a write
operation (CE and WE LOW).
Functional Description
The CY7C107 and CY7C1007 are high-performance CMOS
static RAMs organized as 1,048,576 words by 1 bit. Easy
The CY7C107 is available in a standard 400-mil-wide SOJ; the
CY7C1007 is available in a standard 300-mil-wide SOJ.
Logic Block Diagram
Pin Configuration
SOJ
Top View
D
IN
28
27
26
1
2
3
4
5
6
A
A
A
A
A
A
V
CC
10
11
12
13
14
15
A
9
A
8
25
24
A
7
INPUT BUFFER
A
6
A
A0
23
22
5
A1
A2
A3
A4
A5
A6
A7
A8
7
8
9
10
11
12
13
NC
A
4
21
20
19
18
17
A
17
NC
16
A
A
3
A
19
A
2
18
512x2048
ARRAY
A
A
1
D
OUT
A
0
D
OUT
WE
GND
16
15
D
IN
14
CE
107-2
POWER
DOWN
COLUMN
DECODER
CE
WE
107-1
Selection Guide
7C107-12
7C107-15
7C107-20
7C107-25
7C1007-12
7C1007-15
7C1007-20
7C1007-25
7C107-35
35
Maximum Access Time (ns)
12
15
20
25
Maximum Operating
Current (mA)
150
135
125
120
110
Maximum Standby
Current (mA)
50
40
30
30
25
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose
•
CA 95134
•
408-943-2600
December 1992 – Revised September 3, 1999