), and three-state drivers. Writing to the device is accomplished by t aking chi p enable one (CE
inputs LOW and chip enable two (CE
the eight I/O pins (I/O
location specifi ed on the address pins (A
0
Reading from the device is accomplished by taking chip enable one (CE
write enable (WE
) and output enable (OE) LOW while forcing
1
) and chip enable two (CE2) HIGH. Under
these conditions, the contents of the memory location specified by the address pins will appear on the I/O pins.
The eight input/output pins (I/O
high-impedance state when the device is deselected (CE
HIGH or CE2 LOW), the outputs are disabled (OE HIGH), or
during a write oper ation ( CE
), an active LOW output enable
2
) and write enable ( WE)
1
) input HIGH. Data on
2
through I/O7) is then written into the
through A16).
0
through I/O7) are placed in a
0
LOW , CE2 HIGH, and W E LOW) .
1
The CY7C109 is available in standard 400-mil-wide SOJ and
The CY7C109 / CY7C1009 is a hig h-performance CMO S static RAM organized as 131,072 words by 8 bits. Easy memory
expans ion i s pro vided b y an a ct ive LO W c hip ena b le (CE
), an
1
32-pin TSOP type I packages. The CY7C1009 is available in
a 300-mil-wide SOJ package. The CY7C1009 and CY7C109
are functionally equivalent in all other respects.
Logic Block DiagramPin Configurations
SOJ
Top View
V
32
CC
31
A
15
30
CE
2
29
WE
28
A
13
27
A
8
26
A
9
25
A
11
24
OE
23
A
10
22
CE
1
I/O
21
7
I/O
6
20
I/O
5
19
I/O
4
18
I/O
17
3
109–2
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
CE
CE
WE
OE
NC
1
A
16
2
A
3
14
A
4
12
5
A
7
A
6
6
A
5
7
A
8
4
A
9
I/O
109–1
I/O
I/O
I/O
I/O
I/O
I/O
I/O
0
1
2
A
1
11
3
4
5
6
7
CE
V
A
WE
A
NC
A
A
A
2
A
9
3
A
8
4
13
5
6
2
7
15
8
CC
9
10
16
11
14
12
12
A
13
7
A
14
6
15
A
5
16
A
4
INPUT BUFFER
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
A
1
2
ROW DECODER
7
8
512 x 256 x 8
ARRAY
COLUMN
DECODER
11
10
9
A
A
A
SENSE AMPS
POWER
DOWN
14
15
12
16
A
A
A
A13A
3
A
10
2
A
1
11
A
12
0
I/O
0
13
I/O
1
14
I/O
2
15
GND
16
TSOP I
Top View
(not to scale)
Selection G uide
7C109-10
7C1009-10
Maximum Access Time (ns)101215202535
Maximum Operating Current (mA)195185155140135125
Maximum CMOS Standby Current (mA)101010101010
Maximum CMOS Standby Current (mA)
222———
Low Power Version
Shaded areas contain preliminary information.
7C109-12
7C1009-12
7C109-15
7C1009-15
7C109-20
7C1009-20
7C109-25
7C1009-25
7C109-35
7C1009-35
OE
A
CE
I/O
I/O
I/O
I/O
I/O
GND
I/O
I/O
I/O
A
A
A
A
109–3
1
10
7
6
5
4
3
2
1
0
0
1
2
3
Cypress Semiconductor Corporation
•3901 North First Street•San Jose•CA 95134•408-943-2600
June 30
1998
Page 2
CY7C109
CY7C1009
Maximum Ratings
(Abov e which the useful life m ay be impaired. F or 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 V oltage 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
Current into Outputs (LOW) .........................................20 mA
Electrical Characteristics
ParameterDescription
V
OH
V
OL
V
IH
V
IL
I
IX
I
OZ
I
OS
I
CC
I
SB1
I
SB2
Shaded areas contain preliminary information.
Output HIGH VoltageVCC = Min.,
Output LOW VoltageVCC = Min.,
Input HIGH Voltage2.2V
Input LOW Voltage
Input Load CurrentGND < VI < V
Output Leakage
Current
Output Short
Circuit Current
[3]
VCC Operating
Supply Current
Automatic CE
Po wer-Down Current
—TTL Inputs
Automatic CE
Po wer-Down Current
—CMOS Inputs
[1]
....–0.5V to +7.0V
Over the Ope rating Range
Tes t Condi tions
I
= –4.0 mA
OH
I
= 8.0 mA
OL
[1]
CC
GND < VI < VCC,
Output Disabled
VCC = Max.,
V
= GND
OUT
VCC = Max.,
I
= 0 mA,
OUT
f = f
MAX
= 1/t
RC
Max. VCC, CE1 > V
or CE2 < VIL,
V
> VIH or
IN
V
< VIL, f = f
IN
MAX
Max. VCC,
CE
> VCC – 0.3V,
1
or CE
< 0.3V,
2
V
> VCC – 0.3V,
IN
or V
< 0.3V, f=0
IN
IH
Static Discharge Voltage .......... ......................... ........>2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current.....................................................>200 mA
+ 0.3
Input LOW Voltage
Input Load Curren tGND < VI < V
Output Leakage
Current
Output Short
Circuit Current
VCC Operating
Supply Current
Automatic CE
Po wer-Down Current
—TTL Inputs
Automatic CE
Po wer-Down Current
—CMO S Inputs
[1]
CC
GND < VI < VCC,
–0.30.8–0.30.8–0.30.8V
–1+1–1+1–1+1µA
–5+5–5+5–5+5µA
Output Disabled
[3]
VCC = Max.,
V
= GND
OUT
VCC = Max.,
I
= 0 mA,
OUT
f = f
MAX
= 1/t
RC
Max. VCC, CE1 > V
or CE2 < VIL,
V
> VIH or
IN
V
< VIL, f = f
IN
MAX
IH
–300–300–300mA
Max. VCC,
CE
> VCC – 0.3V,
1
or CE
< 0.3V,
2
V
> VCC – 0.3V,
IN
or V
< 0.3V, f=0
IN
0.40.40.4V
CC
2.2V
+ 0.3
CC
2.2V
CC
+ 0.3
140135125mA
303025mA
101010mA
V
Capacitance
[4]
ParameterDescriptionTe st ConditionsMax.Unit
C
IN
C
OUT
Notes:
1. V
(min.) = –2.0V for pulse durations of less than 20 ns .
IL
is the “instant on” case temperature.
2. T
A
3. Not more than one 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 changes that may affect these parameters.
Input CapacitanceTA = 25°C, f = 1 MHz,
V
= 5.0V
Output Capacitance8pF
CC
9pF
AC Test Loads and Waveforms
R1 480
5V
OUTPUT
30 pF
INCLUDING
JIG AND
SCOPE
Equivalent to:VENIN EQUIVALENT
OUTPUT
(a)
THÉ
Ω
167
OUTPUT
R2
255
Ω
Ω
1.73V
5V
5 pF
INCLUDING
JIG AND
SCOPE
(b)
R1 480
Ω
109–3
R2
255
3.0V
GND
Ω
3ns
≤
ALL INPUT PULSES
90%
10%
90%
10%
≤
109–4
ns
3
3
Page 4
Switching C h aracteri sti cs
[3, 5]
Over the Operating Range
CY7C109
CY7C1009
ParameterDescription
7C109-10
7C1009-10
Min.Max.Min.Max.Min.Max.Unit
7C109-12
7C1009-12
7C109-15
7C1009-15
READ CYCLE
t
RC
t
AA
t
OHA
t
ACE
t
DOE
t
LZOE
t
HZOE
t
LZCE
t
HZCE
t
PU
Read Cycle Time101215ns
Address to Data Valid101215ns
Data Hold from Address Change333ns
CE1 LOW to Data Valid, CE2 HIGH to Data
101215ns
Valid
OE LOW to Data Valid567ns
OE LOW to Low Z000ns
OE HIGH to High Z
CE1 LOW to Low Z, CE2 HIGH to Low Z
CE1 HIGH to High Z, CE2 LOW to High Z
CE1 LOW to Power-Up, CE2 HIGH to
[6, 7]
[7]
[6, 7]
567ns
333ns
567ns
000ns
Power-Up
t
PD
WRITE CYCLE
t
WC
t
SCE
t
AW
t
HA
t
SA
t
PWE
t
SD
t
HD
t
LZWE
t
HZWE
Shaded areas contain preliminary information.
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
I
OL/IOH
6. t
HZOE
7. At any given temperature and voltage condition, t
8. The internal write time of the memory is defined by the overlap of CE
and the trans ition of a ny of thes e signal s can te rminate the write. T he inpu t data set-u p and hold timi ng should be r ef erenced to the lead in g edge of th e signal that terminates
the write.
9. The minimum write cycle time for Write Cycle no. 3 (WE
CE1 HIGH to Power-Down, CE2 LOW to
101215ns
Power-Down
[8,9]
Write Cycle Time101215ns
CE1 LOW to Write End, CE2 HIGH to Write End81012ns
Address Set-Up to Write End81012ns
Address Hold from Write End000ns
Address Set-Up to Write Start000ns
WE Pulse Width81012ns
Data Se t- U p to Write End678ns
Data Hold from Write End000ns
WE HIGH to Low Z
WE LOW to High Z
and 30-pF load capac itance.
, t
HZCE
, and t
are specified wi th a loa d capac itance of 5 pF as in part (b) of A C Test Loads. Transition is measured ±500 mV from steady- state v ol tage.
HZWE
[7]
[6, 7]
is less than t
HZCE
controlled, OE LOW) is the sum of t
, t
LZCE
HZOE
LOW , C E2 HIGH, and WE LO W. CE1 and WE must be LO W an d CE2 HIGH to init iate a write ,
1
333ns
567ns
is less than t
LZOE
, and t
HZWE
is less than t
HZWE
and TSD.
for any given device.
LZWE
4
Page 5
Switching Characteristics
[3, 5]
Over the Operating Range
CY7C109
CY7C1009
ParameterDescription
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
Read Cycle Time202535ns
Address to Data Valid202535ns
Data Hold from Address Change355ns
CE1 LOW to Data Valid, CE2 HIGH to Data
Valid
OE LOW to Data Valid81015ns
OE LOW to Low Z000ns
OE HIGH to High Z
[6, 7]
CE1 LOW to Low Z, CE2 HIGH to Low Z
CE1 HIGH to High Z, CE2 LOW to High Z
CE1 LOW to Power-Up, CE2 HIGH to
Po wer-Up
CE1 HIGH to Power-Down, CE2 LOW to
Power-Down
[8]
Write Cycle Time202535ns
CE1 LOW to Write End, CE2 HIGH to Write End152025ns
Address Set-Up to Write End152025ns
Address Hold from Write End000ns
Address Set-Up to Write Start000ns
WE Pulse Width121520ns
Data Set-Up to Write End101520ns
Data Hold from Write End000ns
WE HIGH to Low Z
WE LOW to High Z
[7]
[6, 7]
Data Retention Characteristics
7C109-20
7C1009-20
202535ns
81015ns
[7]
[6, 7]
355ns
81015ns
000ns
202535ns
355ns
81015ns
Over the Operating Range (L Version Only)
7C109-25
7C1009-25
7C109-35
7C1009-35
UnitMin.Max.Min.Max.Min.Min.
ParameterDescriptionConditionsMin.MaxUnit
V
DR
I
CCDR
t
CDR
t
R
Shaded areas contain preliminary information.
VCC for Data Reten ti onNo input may e xceed VCC + 0.5V
Data Retention Current50µA
Chip Deselect to Data Retention Time0ns
Operation Recov ery Timet
V
= VDR = 2.0V,
CC
CE
> VCC – 0.3V or CE2 < 0.3V,
1
V
> VCC – 0.3V or VIN < 0.3V
IN
2.0V
RC
ns
5
Page 6
Data Retention Waveform
V
CC
CE
Switching Waveforms
Read Cycle No. 1
ADDRESS
DATA OUT
[10, 11]
PREVIOUS DATA VALIDDATA VALID
t
OHA
t
CDR
CY7C109
CY7C1009
DAT A RETENTION MODE
VDR> 2V
t
RC
t
AA
4.5V4.5V
t
R
109-5
109–6
Read Cycle No. 2 (OE Controlled)
ADDRESS
CE
1
CE
2
OE
DA TA OUT
V
CC
SUPPLY
CURRENT
Notes:
10. Device is continuously selected. OE
11. WE
is HIGH for read cycle.
12. Address valid prior to or coincident with CE
HIGH IMPEDANCE
t
LZCE
t
PU
, CE1 = VIL, CE2 = VIH.
[11, 12]
t
RC
t
ACE
t
DOE
t
LZOE
50%
transition LOW and CE2 transition HIGH.
1
DATA VALID
t
HZOE
t
HZCE
HIGH
IMPEDANCE
t
PD
ICC
50%
ISB
109–7
6
Page 7
CY7C109
CY7C1009
Switching Waveforms
Write Cycle No. 1 (CE
(continued )
or CE2 Controlled)
1
[13, 14]
ADDRESS
CE
1
t
CE
2
SA
t
AW
WE
DATA I/O
Write Cycle No. 2 (WE Controlled, OE HIGH During Write)
ADDRESS
t
WC
[13, 14]
t
WC
t
PWE
t
SCE
t
SCE
t
SD
DATA VALID
t
HA
t
HD
109–8
CE
1
CE
2
WE
OE
DATA I/O
Notes:
13. Data I/O is high impedance if OE
14. If CE
goes HIGH or CE2 goes LOW si multane ously w ith WE going HIGH, t he out put remai ns in a hi gh-impedanc e state .
1
NOTE 15
= VIH.
t
SA
t
HZOE
t
SCE
t
SCE
t
AW
t
PWE
t
SD
t
HA
t
HD
DATAINVALID
109–9
7
Page 8
CY7C109
CY7C1009
Switching Waveforms
Write Cycle No. 3 (WE
ADDRESS
CE
1
CE
2
WE
DATA I/O
Note:
15. During this period the I/Os are in the output state and input signals should not be applied.