The CY7C107BN and CY7C1007BN are high-performance
CMOS static RAMs organized as 1,048,576 words by 1 bit.
Easy memory expansion is provided by an active LOW Chip
Enable (CE
automatic power-down feature that reduces power
consumption by more than 65% when deselected.
Writing to the devices is accomplished by taking Chip Enable
(CE
) and Write Enable (WE) inputs LOW. Data on the input pin
(D
IN
address pins (A
) and three-state drivers. These devices have an
) is written into the memory location specified on the
through A19).
0
Reading from the devices is accomplished by taking Chip
Enable (CE
) LOW while Write Enable (WE) remains HIGH.
Under these conditions, the contents of the memory location
specified by the address pins will appear on the data output
(D
) pin.
OUT
The output pin (D
when the device is deselected (CE
operation (CE
and WE LOW).
) is placed in a high-impedance state
OUT
HIGH) or during a write
The CY7C107BN is available in a standard 400-mil-wide SOJ;
the CY7C1007BN is available in a standard 300-mil-wide SOJ
LogicBlockDiagramPin Configuration
SOJ
A
A
A
A
A
A
NC
A
A
A
A
D
OUT
WE
GND
10
11
12
13
14
15
16
17
18
19
Top View
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
D
IN
INPUT BUFFER
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
512 x 2048
ARRA
ROW DECODER
COLUMN
DECODER
Y
D
OUT
SENSE AMPS
POWER
DOWN
CE
V
A
A
A
A
A
A
NC
A
A
A
A
D
CE
CC
9
8
7
6
5
4
3
2
1
0
IN
9
A
A10A11A
13
A12A14A16A
15
A17A18A
19
Selection Guide
Maximum Access Time (ns)15
Maximum Operating Current (mA)80
Maximum CMOS Standby Current I
Cypress Semiconductor Corporation•198 Champion Court•San Jose, CA 95134-1709•408-943-2600
Document #: 001-06426 Rev. ** Revised February 1, 2006
SB2
WE
7C107BN-15
7C1007BN-15
(mA)2
[+] Feedback
CY7C107BN
CY7C1007BN
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ..................................-65°C to +150°C
Ambient Temperature with
Current into Outputs (LOW).........................................20 mA
(min.) = –2.0V for pulse durations of less than 20 ns.
1. V
IL
is the “Instant On” case temperature.
2. T
A
3. Not more than 1 output should be shorted at one time. Duration of the short circuit should not exceed 30 seconds.
4. Tested initially and after any design or process ch anges that may affect these parameters.
Output Capacitance10pF
Document #: 001-06426 Rev. **Page 2 of 7
V
CC
7pF
= 5.0V
[+] Feedback
CY7C107BN
CY7C1007BN
AC Test Loads and Waveforms
Ω
5V
OUTPUT
30 pF
INCLUDING
JIG AND
SCOPE
Equivalentto:THÉ VENIN EQUIVALENT
Switching Characteristics
R1 480
R2
255Ω
(a)(b)
OUTPUT1.73V
167Ω
5V
OUTPUT
5pF
INCLUDING
JIG AND
SCOPE
[5]
Over the Operating Range
ParameterDescriptionMin.Max.Unit
READ CYCLE
t
RC
t
AA
t
OHA
t
ACE
t
LZCE
t
HZCE
t
PU
t
PD
WRITE CYCLE
t
WC
t
SCE
t
AW
t
HA
t
SA
t
PWE
t
SD
t
HD
t
LZWE
t
HZWE
Notes:
5. Test conditions assume signal transition time of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V, and output loading of the specified
6. At any given temperature and voltage condition, t
7. t
8. The internal write time of the memory is defined by the overlap of CE
and 30-pF load capacitance.
I
OL/IOH
and t
HZCE
of these signals can terminate the write. The input data set-up and hold timing should be referenced to the leading edge of the signal that terminates the write.
[8]
are specified with a load capacitance of 5 pF as in part (b) of AC Test Loads. Transition is measured ±500 mV from steady-state voltage .
HZWE
Read Cycle Time15ns
Address to Data Valid15ns
Data Hold from Address Change3ns
CE LOW to Data Valid15ns
CE LOW to Low Z
CE HIGH to High Z
CE LOW to Power-Up0ns
CE HIGH to Power-Down15ns
Write Cycle Time15ns
CE LOW to Write End12ns
Address Set-Up to Write End12ns
Address Hold from Write End0ns
Address Set-Up to Write Start0ns
WE Pulse Width12ns
Data Set-Up to Write End8ns
Data Hold from Write End0ns
WE HIGH to Low Z
WE LOW to High Z
HZCE
R1 480Ω
[6]
[6, 7]
[6]
[6, 7]
is less than t
ALL INPUT PULSES
90%
90%
10%
≤ 3
ns
R2
255Ω
3.0V
GND
≤ 3
10%
ns
7C107BN-15
7C1007BN-15
3ns
7ns
3ns
7ns
and t
LZCE
LOW and WE LOW. CE and WE must be LOW to initiate a write, a nd the t ransition of a ny
is less than t
HZWE
for any given device.
LZWE
Document #: 001-06426 Rev. **Page 3 of 7
[+] Feedback
Switching Waveforms
Read Cycle No. 1
ADDRESS
DATA OUT
[10, 11]
PREVIOUS DATA VALIDDATA VALID
t
OHA
CY7C107BN
CY7C1007BN
t
RC
t
AA
Read Cycle No. 2
[11, 12]
ADDRESS
CE
t
LZCE
DATA OUT
V
CC
SUPPLY
HIGH IMPEDANCE
t
PU
CURRENT
Write Cycle No. 1 (CE Controlled)
ADDRESS
CE
WE
t
RC
t
ACE
t
HZCE
DATA VALID
t
PD
50%
[13]
t
WC
t
SA
t
AW
t
PWE
t
SCE
t
50%
HA
HIGH
IMPEDANCE
I
CC
I
SB
DATA IN
DATA OUT
Notes:
9. No input may exceed V
10.Device is continuously selected, CE
11. WE
is HIGH for read cycle.
12.Address valid prior to or coincident with CE
goes HIGH simultaneously with WE going HIGH, the output remains in a high-impedance state.
products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.