The CY7C1019BV33/CY7C1018BV33 is a high-performance
CMOS static RAM org anized as 131,0 72 words b y 8 bits. Easy
memory expansion is pr ovide d by an activ e LO W Chip Enab le
), an active LOW Out put Enable (OE), and three-state driv-
(CE
ers. This device has an automatic power-down feature that
significantly reduces power consumption when deselected.
Logic Block Diagram
INPUT BUFFER
A
0
A
1
A
2
A
3
A
CE
WE
OE
4
A
5
A
6
A
A
ROW DECODER
7
8
512 x 256 x 8
ARRAY
COLUMN
DECODER
9
12
10
A
A
A11A13A
SENSE AMPS
POWER
DOWN
14
15
16
A
A
A
Writing to the device is accomplished by taking Chip Enable
) and Write Enable (WE) inpu ts LOW. Data on the eight I/O
(CE
pins (I/O
fied on the address pins (A
through I/O7) is then written into the location speci-
0
through A16).
0
Reading from the device is accomplished by taking Chip
Enable (CE
Enable (WE
) and Output Enable ( OE) LOW while forcing Write
) HIGH. Under these conditions, the contents of
the memory location specifie d b y t he addre ss pins w ill a ppear
on the I/O pins.
The eight input/output pins (I/O
high-impedance state when the device is deselected (CE
through I/O7) are placed in a
0
HIGH), the outputs are disabled (OE HIGH), or duri ng a w r it e
operation (CE
LOW, and WE LOW).
The CY7C1019BV33 is available in standard 32-pin TSOP
Type II and 400-mil-wide package. The CY7C1018BV33 is
available in a standard 300-mil-wide package.
Configurations
Pin
SOJ / TSOPII
Top View
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
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
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
A
1
0
A
1
2
A
3
2
I/O
I/O
V
V
I/O
I/O
WE
A
CE
CC
SS
A
A
A
A
4
3
5
6
0
7
1
8
9
10
2
3
11
12
4
13
5
14
6
15
16
7
0
1
2
3
4
5
6
7
Selection Guide
7C1019BV33-10
7C1018BV33-10
Maximum Access Time (ns)101215
Maximum Operating Current (mA)175160145
Maximum Standby Current (mA)555
L−0.50.5
Cypress Semiconductor Corporation
•3901 North First Street•San Jose•CA 95134•408-943-2600
7C1019BV33-12
7C1018BV33-12
7C1019BV33-15
7C1018BV33-15
June 11, 2001
CY7C1019BV33
CY7C1018BV33
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
Static Discharge Voltage ...........................................>2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current.....................................................>200 mA
Operating Range
Po wer 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
ParameterDescriptionMin.Max.Min.Max.Min.Max.Unit
V
V
V
V
I
IX
I
OZ
I
CC
I
SB1
I
SB2
OH
OL
IH
IL
Output HIGH Voltage VCC = Min.,
Output LOW VoltageVCC = Min.,
Input HIGH Voltage2.2V
Input LOW Voltage
Input Load CurrentGND < VI < V
Output Leakage
Current
VCC Operating
Supply Current
Automatic CE
Power-Down Current
—TTL Inputs
Automatic CE
Power-Down Current
—CMOS Inputs
[1]
....–0.5V to +7.0V
Over the Operating Range
Test Conditions
= – 4.0 mA
I
OH
= 8.0 mA
I
OL
[1]
CC
GND < VI < VCC,
Output Disab le d
VCC = Max.,
I
= 0 mA,
OUT
f = f
MAX
Max. V
VIN > VIH or
< VIL, f = f
V
IN
= 1/t
, CE > V
CC
RC
IH
MAX
Max. VCC,
CE > VCC – 0.3V,
> VCC – 0.3V,
V
IN
< 0.3V, f = 0
or V
IN
Range
Commercial0°C to +70°C 3.3V ± 10%
7C1019BV33-10
7C1018BV33-10
7C1019BV33-12
7C1018BV33-12
2.42.42.4V
0.40.40.4V
CC
+ 0.3
–0.30.8–0.30.8–0.30.8V
–1+1–1+1–1+1µA
–5+5–5+5–5+5µA
175160145mA
202020mA
555mA
L−0.50.5
Ambient
Temperature
2.2V
+ 0.3
[2]
7C1019BV33-15
7C1018BV33-15
CC
2.2V
CC
+ 0.3
V
CC
V
Capacitance
[3]
ParameterDescriptionTest ConditionsMax.Unit
C
IN
C
OUT
Notes:
(min.) = –2.0V f or pulse durat ions of less than 20 ns .
1. V
IL
is the “Instant On” case temper ature.
2. T
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
2
AC Test Loads and Waveforms
CY7C1019BV33
CY7C1018BV33
Ω
(a)
THÉ
R1 480
167
OUTPUT
R2
Ω
255
Ω
1.73V
[4]
Over the Operating Range
3.3V
OUTPUT
30 pF
INCLUDING
JIG AND
SCOPE
Equivalent to:VENIN EQUIVALENT
OUTPUT
Switching Characteristics
3.3V
5 pF
INCLUDING
JIG AND
SCOPE
Ω
R1 480
(b)
7C1019BV33-10
7C1018BV33-10
R2
255
3.0V
GND
Ω
≤
3 ns
7C1019BV33-12
7C1018BV33-12
ALL INPUT PULSES
90%
10%
7C1019BV33-15
7C1018BV33-15
90%
10%
≤
3
ns
ParameterDescriptionMin.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 CYCLE
t
WC
t
SCE
t
AW
t
HA
t
SA
t
PWE
t
SD
t
HD
t
LZWE
t
HZWE
Notes:
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 wri te tim e of the mem ory is de fin ed b y the overlap of CE
signals can terminate the write. The input data set -up and hold timing sho uld be ref erenced to the leadi ng edge of the signal that terminat es th e 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 Valid10121 5ns
OE LOW to Data Valid567ns
OE LOW to Low Z000n s
[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 cap acitanc e.
, t
HZCE
, and t
are specified with a load capacitan ce of 5 pF as in part (b) of AC Test Loads. T r ansition is measured ±500 mV from steady-state v oltage.
HZWE
[6]
[5, 6]
333ns
is less than t
HZCE
controlled, OE LOW) is the sum of t
, t
LZCE
HZOE
LOW and WE LO W . CE and WE m ust be LO W to initiate a write , and the tr ansition of an y of these
567ns
is less than t
LZOE
, and t
HZWE
is less than t
HZWE
and tSD.
for any giv en device.
LZWE
3
CY7C1019BV33
CY7C1018BV33
Data Retention Characteristics
Over the Operating Range (L Version Only)
ParameterDescriptionConditionsMin.Max.Unit
V
DR
I
CCDR
t
CDR
t
R
[3]
VCC for Data RetentionNo input may exceed VCC + 0.5V
Data Retention Current150µA
Chip Deselect to Data Retention Time0ns
VCC = VDR = 2.0V,
> VCC – 0.3V,
CE
> VCC – 0.3V or VIN < 0.3V
V
IN
2.0V
Operation Recovery Time200µs
Data Retention Waveform
DATA RETENTION MODE
V
CC
t
CDR
CE
VDR> 2V
3.0V3.0V
t
R
Switching Waveforms
Read Cycle No. 1
ADDRESS
[9, 10]
t
RC
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
is HIGH f or read cycle .
10. WE
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 LO W .
DOE
t
AA
t
RC
t
HZOE
t
DATA VALID
HZCE
t
PD
50%
HIGH
IMPEDANCE
ICC
ISB
4
CY7C1019BV33
CY7C1018BV33
Switching Waveforms
Write Cycle No. 1 (CE
(continued)
Controlled)
[12, 13]
ADDRESS
CE
t
SA
t
AW
WE
DA TA I/O
Write Cycle No. 2 (WE Controlled, OE HIGH During Write)
t
WC
[12, 13]
t
WC
t
PWE
t
SCE
t
SCE
t
SD
DATA VALID
t
HA
t
HD
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 simultaneous ly with WE going HIGH , the out put re mains in a hi gh-imp edance st ate .