The CY7C1019 is a high-performance CMOS static RAM organized as 131,072 words by 8 bits. Easy me mory exp ansio n
is provided by an active L OW chip enable (CE
output ena ble (OE
), and three-state drivers. This device has
an automatic power-down feature that significantly reduces
power consumption when deselected.
Logic Block Diagram
and OE options
), an active LOW
CY7C1019
128K x 8 Static RAM
Writing to the device is accomplished by taking chip enable
) and write enable (WE ) inputs LOW. Data on the eigh t I/O
(CE
pins (I/O
fied on the address pins (A
Reading from the device is accomplished by taking chip enable (CE
enable (WE
the memory locatio n spec ified by the add ress pi ns will a ppe ar
on the I/O pins.
The eight input/output pins (I/O
high-impedance state when the device is deselected (CE
HIGH), the outputs are disabled (OE HIGH), or during a write
operation (CE
The CY7C1019 is available in standard 400-mil-wide SOJs.
through I/O7) is then written into the location speci-
0
through A16).
0
) and output enable (OE) LOW while forcing write
) HIGH. Under these conditions, the contents of
through I/O7) are placed in a
0
LOW, and WE LOW).
Configuration
Pin
SOJ
Top V iew
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
1019–2
A
A
A
A
OE
I/O
I/O
V
V
I/O
I/O
A
A
A
A
A
16
15
14
13
7
6
SS
CC
5
4
12
11
10
9
8
CE
WE
OE
A
1
0
A
1
2
A
3
2
A
4
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
1019–1
0
1
2
3
4
5
6
7
INPUT BUFFER
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
A
ROW DECODER
7
8
512 x 256 x 8
ARRAY
COLUMN
DECODER
9
10
A
A
A11A13A
SENSE AMPS
POWER
DOWN
14
15
12
16
A
A
A
I/O
I/O
V
I/O
I/O
V
WE
CE
3
5
6
0
7
1
8
CC
9
SS
10
2
3
11
12
A
4
13
A
5
14
A
6
15
A
16
7
Selection Guide
7C1019–107C1019–127C1019–15
Maximum Access Time (ns)101215
Maximum Operating Current (mA)240220200
L210190175
Maximum Standby Current (mA)101010
L111
Shaded areas contain advance information.
Cypress Semiconductor Corporation•3901 North First Street•San Jose•CA 95134•408-943-2600
Document #: 38-05055 Rev. ** Revised August 31, 2001
PRELIMINARY
Maximum Ratings
(Above which the useful life may be im pai red. For user guidelines, not tested.)
Storage Temperature .................................–65°C to +150°C
Ambient Temperature with
Power Applied.............................................–55°C to +125°C
Supply Voltage on V
DC Voltage Applied to Outputs
in High Z State
[1]
DC Input Voltage
to Relative GND
CC
....................................–0.5V to VCC + 0.5V
[1]
................................–0.5V to VCC + 0.5V
Electrical Characteristics Ov er the Op erat ing Range
Latch-Up Current.....................................................>200 mA
Operating Range
Range
Temperature
Commercial0°C to +70°C 5V ± 10%
7C1019-107C1019-127C1019-15
Min.Max.Min.Max.Min.Max.Unit
Ambient
CC
+ 0.3
2.2V
–0.30.8–0.30.8–0.30.8V
–1+1–1+1–1+1µA
–5+5–5+5–5+5µA
240220200mA
L
210190175
404040mA
L
202020
101010mA
L
111
CC
+ 0.3
[2]
2.2V
+ 0.3
V
CC
CC
V
Capacitance
[3]
ParameterDescriptionTest ConditionsMax.Unit
C
IN
C
OUT
Notes:
(min.) = –2.0V for pulse durations of l ess t han 20 ns .
1. V
IL
2. T
is the “instant on” case tempera ture.
A
3. Tested initially and after any design or process changes that may affect these parameters.
Input CapacitanceTA = 25°C, f = 1 MHz,
= 5.0V
V
Output Capacitance8pF
CC
6pF
Document #: 38-05055 Rev. **Page 2 of 8
PRELIMINARY
CY7C1019
AC Test Loads and Waveforms
Ω
(a)
THÉ
R1 480
167Ω
OUTPUT
R2
Ω
255
[4]
Ov er the Op eratin g Range
5V
OUTPUT
30 pF
INCLUDING
JIG AND
SCOPE
Equivalent to:VENIN EQUIVALENT
OUTPUT
Switching Characteristics
5V
INCLUDING
JIG AND
SCOPE
1.73V
5 pF
R1 480Ω
(b)
1019–3
R2
255
3.0V
GND
Ω
≤ 3ns≤ 3 ns
7C1019-107C1019-127C1019-15
ParameterDescription
Min.Max.Min.Max.Min.Max.Unit
READ CYCLE
t
RC
t
AA
t
OHA
t
ACE
t
DOE
t
LZOE
t
HZOE
t
LZCE
t
HZCE
t
PU
t
PD
WRITE CY CLE
t
WC
t
SCE
t
AW
t
HA
t
SA
t
PWE
t
SD
t
HD
t
LZWE
t
HZWE
Shaded areas contain advance information.
Note:
4. 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
I
OL/IOH
5. t
HZOE
6. At any given temperature and voltage condition, t
7. The internal write time of the memory is defined by the overlap of CE
signals can termi nate t he writ e. The input dat a set -up and hold ti ming should b e refe renced to the lead ing edge of the signal t hat terminat es the write.
8. The minimum write cycle time for Write Cycle no. 3 (WE
Read Cycle Time101215ns
Address to Data Valid101215ns
Data Hold from Address Change333ns
CE LOW to Data Valid101215ns
OE LOW to Data Valid567ns
OE LOW to Low Z000ns
[6]
[5, 6]
[5, 6]
567ns
333ns
567ns
OE HIGH to High Z
CE LOW to Low Z
CE HIGH to High Z
CE LOW to Power-Up000ns
CE HIGH to Power-Down101215ns
[7,8]
Write Cycle Time101215ns
CE LOW to Write End8910ns
Address Set-Up to Write End7810ns
Address Hold from Write End000ns
Address Set-Up to Write Start000ns
WE Pulse Width7810ns
Data Set-Up to Write End568ns
Data Hold from Write End000ns
WE HIGH to Low Z
WE LOW to High Z
and 30-pF load capacitance.
, t
HZCE
, and t
are specified with a lo ad cap acitance of 5 pF as in pa rt (b) of AC Test Loads. T rans ition i s measur ed ±500 mV from s teady- state voltage.
HZWE
[6]
[5, 6]
333ns
is less than t
HZCE
controlled, OE LOW) is the sum of t
, t
LZCE
is less than t
HZOE
LOW and WE LOW . CE and WE must b e LOW to initiat e a write, and th e transition of any of these
567ns
LZOE
, and t
HZWE
is less than t
HZWE
and tSD.
ALL INPUT PULSES
90%
10%
for any given device.
LZWE
90%
10%
1019–4
Document #: 38-05055 Rev. **Page 3 of 8
PRELIMINARY
CY7C1019
Data Retention Characteristics Over the Operating Range (L Version Only)
ParameterDescriptionConditionsMin.MaxUnit
V
DR
I
CCDR
t
CDR
t
R
VCC for Data RetentionNo input may exceed VCC + 0.5V
= VDR = 3.0V,
V
Data Retention Current300µA
[3]
Chip Deselect to Data Retention Time0ns
CC
> VCC – 0.3V,
CE
1
> V
V
IN
CC
– 0.3V or VIN < 0.3V
Operation Recovery Timet
2.0V
RC
Data Retention Waveform
DATA RETENTION MODE
V
CC
t
CDR
CE
VDR> 2V
3.0V3.0V
t
R
1019–5
Switching Waveforms
Read Cycle No. 1
[9, 10]
ns
ADDRESS
DATA OUT
PREVIOUS DATA VALIDDATA VALID
Read Cycle No. 2 (OE Controlled)
ADDRESS
CE
OE
DATA OUT
V
CC
SUPPLY
CURRENT
Notes:
9. Device is continuously selected. OE
10. WE
is HIGH for read cycle .
11. Address valid prior to or coincident with CE
HIGH IMPEDANCE
t
LZCE
t
PU
, CE = VIL.
t
OHA
[10, 11]
t
ACE
t
t
LZOE
50%
transition LOW .
DOE
t
RC
t
AA
1019–6
t
RC
t
HZOE
t
DATA VALID
HZCE
t
PD
50%
HIGH
IMPEDANCE
ICC
ISB
1019–7
Document #: 38-05055 Rev. **Page 4 of 8
PRELIMINARY
Switching Waveforms (continued)
Write Cycle No. 1 (CE
Controlled)
ADDRESS
CE
WE
DATA I/O
Write Cycle No. 2 (WE Controlled, OE HIGH During Write)
[12, 13]
t
SA
t
AW
t
WC
[12, 13]
t
PWE
t
SCE
t
SCE
t
SD
DATA VALID
CY7C1019
t
HA
t
HD
1019–8
t
WC
ADDRESS
t
SCE
CE
t
AW
t
SA
t
PWE
WE
OE
t
SD
DATA I/O
Notes:
12. Data I/O is high impedance if OE
13. If CE
14. During this period the I/Os are in the output state and input signals should not be applied.
goes HIGH simultaneousl y with WE going HIGH, the o utput remai ns in a hig h-impedanc e stat e.