021V
CY7C1021V
64K x 16 Static RAM
Features
• 3.3V operation (3.0V–3.6V)
• High speed
— tAA = 10/12/15 ns
• CMOS for optimum speed/power
• Low Active Power (L version)
— 576 mW (max.)
• Low CMOS Standby Power (L version)
— 1.80 mW (max.)
• Automatic power-down when deselected
• Independent control of upper and lower bits
• Available in 44-pin TSOP II and 400-mil SOJ
• Available in a 48-Ball Mini BGA package
Functional Description
The CY7C1021V is a high-performance CMOS static RAM organized as 65,536 words by 16 bits. This device has an automatic power-down feature that significantly reduces power
consumption when deselected.
Writing to the device is accomplished by taking Chip Enable
(CE) and Write Enable (WE) inputs LOW. If Byte Low Enable
(BLE) is LOW, then data from I/O pins (I/O1 through I/O8 ), is
written into the location specified on the address pins (A0
through A15 ). If Byte High Enable (BHE) is LOW, then data
from I/O pins (I/O9 through I/O16 ) is written into the location
specified on the address pins (A0 through A15 ).
Reading from the device is accomplished by taking Chip Enable (CE) and Output Enable (OE) LOW while forcing the Write
Enable (WE) HIGH. If Byte Low Enable (BLE) is LOW, then
data from the memory location specified by the address pins
will appear on I/O1 to I/O8. If Byte High Enable (BHE) is LOW,
then data from memory will appear on I/O9 to I/O16. See the
truth table at the back of this data sheet for a complete description of read and write modes.
The input/output pins (I/O1 through I/O16) are placed in a
high-impedance state when the device is deselected (CE
HIGH), the outputs are disabled (OE HIGH), the BHE and BLE
are disabled (BHE, BLE HIGH), or during a write operation (CE
LOW, and WE LOW).
The CY7C1021V is available in 400-mil-wide SOJ, standard
44-pin TSOP Type II, and in 48-ball mini BGA packages.
Logic Block Diagram
Pin Configuration
SOJ / TSOP II
Top View
SENSE AMPS
A7
A6
A5
A4
A3
A2
A1
A0
ROW DECODER
DATA IN DRIVERS
64K x 16
RAM Array
512 X 2048
I/O1 – I/O8
I/O9 – I/O16
COLUMN DECODER
A8
A9
A10
A11
A12
A13
A14
A15
BHE
WE
CE
OE
BLE
A4
A3
A2
A1
A0
CE
I/O1
I/O2
I/O3
I/O4
VCC
VSS
I/O5
I/O6
I/O7
I/O8
WE
A15
A14
A13
A12
NC
1
44
2
3
43
42
4
41
40
39
38
5
6
7
8
9
10
11
12
37
36
35
34
33
32
31
30
29
28
27
13
14
15
16
17
18
19
20
21
22
26
25
24
23
A5
A6
A7
OE
BHE
BLE
I/O16
I/O15
I/O14
I/O13
VSS
VCC
I/O12
I/O11
I/O10
I/O9
NC
A8
A9
A10
A11
NC
1021V-2
1021V-1
Selection Guide
7C1021V-10
Maximum Access Time (ns)
Maximum Operating Current (mA)
Commercial
Maximum CMOS Standby Current (mA)
Commercial
L
L
Cypress Semiconductor Corporation
Document #: 38-05060 Rev. **
•
3901 North First Street
•
7C1021V-12
7C1021V-15
10
12
15
210
200
190
160
150
140
5
5
5
0.500
0.500
0.500
San Jose
•
CA 95134 • 408-943-2600
Revised August 31, 2001
CY7C1021V
Pin Configurations (continued)
Mini BGA
(Top View)
1
2
3
4
5
6
BLE
OE
A0
A1
A2
NC
A
I/O9 BHE
A3
A4
CE
I/O1
B
I/O10 I/O11
A5
A6
I/O2
I/O3
C
VSS I/O12 NC
A7
I/O4 VCC
D
VCC I/O13 NC
NC
I/O5
VSS
E
I/O15 I/O14 A14
A15 I/O6
I/O7
F
I/O16 NC
NC
A8
A12
A13
WE I/O8
G
A9
A10
A11
H
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
Power Applied............................................. –55°C to +125°C
Supply Voltage on VCC to Relative GND[1] .... –0.5V to +4.6V
DC Voltage Applied to Outputs
in High Z State[1] ......................................–0.5V to VCC+0.5V
DC Input Voltage[1] ..................................–0.5V to VCC+0.5V
NC
Current into Outputs (LOW) ........................................ 20 mA
Static Discharge Voltage ........................................... >2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current..................................................... >200 mA
Operating Range
Range
Commercial
Industrial
Ambient Temperature[2]
VCC
0°C to +70°C
3.3V ± 10%
–40°C to +85°C
3.3V ± 10%
Notes:
1. VIL (min.) = –2.0V for pulse durations of less than 20 ns.
2. TA is the “instant on” case temperature.
Document #: 38-05060 Rev. **
Page 2 of 11
CY7C1021V
Electrical Characteristics Over the Operating Range
Parameter
Description
Test Conditions
7C1021V-10
7C1021V-12
7C1021V-15
Min.
Min.
Min.
Max.
Max.
2.4
Max.
Unit
VOH
Output HIGH Voltage
VCC = Min.,
IOH = –4.0 mA
VOL
Output LOW Voltage
VCC = Min., IOL = 8.0 mA
0.4
V
VIH
Input HIGH Voltage
2.2
VCC+
0.3V
2.2
VCC+
0.3V
2.2
VCC+
0.3V
V
VIL
Input LOW Voltage[1]
−0.3
0.8
–0.3
0.8
–0.3
0.8
V
IIX
Input Load Current
GND < VI < VCC
−1
+1
–1
+1
–1
+1
µA
IOZ
Output Leakage
Current
GND < VI < VCC,
Output Disabled
−1
+1
–1
+1
–1
+1
µA
ICC
VCC Operating
Supply Current
VCC = Max.,
IOUT = 0 mA,
f = fMAX = 1/tRC
ISB1
Automatic CE
Power-Down Current
—TTL Inputs
ISB2
Automatic CE
Power-Down Current
—CMOS Inputs
2.4
2.4
0.4
V
0.4
210
200
190
mA
160
150
140
mA
Max. VCC, CE > VIH
VIN > VIH or
VIN < VIL, f = fMAX
40
40
40
mA
Max. VCC,
CE > VCC – 0.3V,
VIN > VCC – 0.3V,
or VIN < 0.3V, f = 0
5
5
5
mA
500
500
500
µA
L
L
Capacitance[3]
Parameter
Description
CIN
Input Capacitance
COUT
Output Capacitance
Test Conditions
Max.
Unit
6
pF
8
pF
TA = 25°C, f = 1 MHz
Note:
3. Tested initially and after any design or process changes that may affect these parameters.
AC Test Loads and Waveforms
R 317 Ω
R 317 Ω
3.3V
ALL INPUT PULSES
3.3V
OUTPUT
3.0V
90%
OUTPUT
30 pF
R2
351Ω
INCLUDING
JIG AND
SCOPE
(a)
R2
351Ω
5 pF
INCLUDING
JIG AND
SCOPE
GND
VCC – 0.3V or VIN < 0.3V
Unit
V
100
µA
0
ns
tRC
ns
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
IOL/IOH and 30-pF load capacitance.
5. tHZOE, tHZBE, tHZCE, and tHZWE 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.
6. At any given temperature and voltage condition, tHZCE is less than tLZCE, tHZOE is less than tLZOE, and tHZWE is less than tLZWE for any given device.
7. The internal write time of the memory is defined by the overlap of CE LOW, WE LOW and BHE / BLE LOW. CE, WE and BHE / BLE must be LOW to initiate a write,
and the transition 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. Tested initially and after any design or process changes that may affect these parameters.
9. tr < 3 ns for the -12 and -15 speeds. tr < 5 ns for the -20 and slower speeds.
10. No input may exceed VCC + 0.5V.
Document #: 38-05060 Rev. **
Page 4 of 11
CY7C1021V
Data Retention Waveform
DATA RETENTION MODE
3.0V
VCC
VDR > 2V
3.0V
tR
tCDR
CE
1021V–5
Switching Waveforms
Read Cycle No. 1
[11, 12]
tRC
ADDRESS
tAA
tOHA
DATA OUT
PREVIOUS DATA VALID
DATA VALID
1021V-6
Read Cycle No. 2 (OE Controlled)
[12, 13]
ADDRESS
tRC
CE
tACE
OE
tHZOE
tDOE
BHE, BLE
tLZOE
tHZCE
tDBE
tLZBE
DATA OUT
HIGH IMPEDANCE
tLZCE
VCC
SUPPLY
CURRENT
tHZBE
HIGH
IMPEDANCE
DATA VALID
tPD
tPU
50%
IICC
CC
50%
IISB
SB
1021V-7
Notes:
11. Device is continuously selected. OE, CE, BHE and/or BHE = VIL.
12. WE is HIGH for read cycle.
13. Address valid prior to or coincident with CE transition LOW.
Document #: 38-05060 Rev. **
Page 5 of 11
CY7C1021V
Switching Waveforms (continued)
Write Cycle No. 1 (CE Controlled)
[14, 15]
tWC
ADDRESS
CE
tSA
tSCE
tAW
tHA
tPWE
WE
tBW
BHE, BLE
tSD
tHD
DATA I/O
1021V-8
Write Cycle No. 2 (BLE or BHE Controlled)
tWC
ADDRESS
BHE, BLE
tSA
tBW
tAW
tHA
tPWE
WE
tSCE
CE
tSD
tHD
DATA I/O
1021V-9
Notes:
14. Data I/O is high impedance if OE or BHE and/or BLE= VIH.
15. If CE goes HIGH simultaneously with WE going HIGH, the output remains in a high-impedance state.
Document #: 38-05060 Rev. **
Page 6 of 11
CY7C1021V
Switching Waveforms (continued)
Write Cycle No. 3 (WE Controlled, LOW)
tWC
ADDRESS
tSCE
CE
tAW
tHA
tSA
tPWE
WE
tBW
BHE, BLE
tHZWE
tSD
tHD
DATA I/O
tLZWE
1021V-10
Truth Table
CE
OE
H
X
L
L
L
X
WE
BLE
BHE
X
X
X
High Z
High Z
Power-Down
Standby (ISB)
H
L
L
Data Out
Data Out
Read - All bits
Active (ICC)
L
H
Data Out
High Z
Read - Lower bits only
Active (ICC)
H
L
High Z
Data Out
Read - Upper bits only
Active (ICC)
L
L
Data In
Data In
Write - All bits
Active (ICC)
L
H
Data In
High Z
Write - Lower bits only
Active (ICC)
H
L
High Z
Data In
Write - Upper bits only
Active (ICC)
L
I/O1–I/O8
I/O9–I/O16
Mode
Power
L
H
H
X
X
High Z
High Z
Selected, Outputs Disabled
Active (ICC)
L
X
X
H
H
High Z
High Z
Selected, Outputs Disabled
Active (ICC)
Document #: 38-05060 Rev. **
Page 7 of 11
CY7C1021V
Ordering Information
Speed (ns)
10
12
Ordering Code
CY7C1021V33-10BAC
BA48
Package Type
48-Ball Mini Ball Grid Array (7.00 mm x 7.00 mm)
CY7C1021V33-10VC
V34
CY7C1021V33L-10VC
V34
44-Lead (400-Mil) Molded SOJ
CY7C1021V33-10ZC
Z44
44-Lead TSOP Type II
CY7C1021V33L-10ZC
Z44
44-Lead TSOP Type II
CY7C1021V33-12BAC
BA48
48-Ball Mini Ball Grid Array (7.00 mm x 7.00 mm)
V34
44-Lead (400-Mil) Molded SOJ
CY7C1021V33L-12VC
V34
44-Lead (400-Mil) Molded SOJ
CY7C1021V33-12ZC
Z44
44-Lead TSOP Type II
CY7C1021V33L-12ZC
Z44
44-Lead TSOP Type II
CY7C1021V33-12BAI
BA48
V34
Commercial
48-Ball Mini Ball Grid Array (7.00 mm x 7.00 mm)
Commercial
Industrial
44-Lead (400-Mil) Molded SOJ
CY7C1021V33-15BAC
BA48
48-Ball Mini Ball Grid Array (7.00 mm x 7.00 mm)
CY7C1021V33L-15BAC
BA48
48-Ball Mini Ball Grid Array (7.00 mm x 7.00 mm)
CY7C1021V33-15VC
V34
44-Lead (400-Mil) Molded SOJ
CY7C1021V33L-15VC
V34
44-Lead (400-Mil) Molded SOJ
CY7C1021V33-15ZC
Z44
44-Lead TSOP Type II
CY7C1021V33L-15VC
Z44
44-Lead TSOP Type II
CY7C1021V33-15BAI
BA48
48-Ball Mini Ball Grid Array (7.00 mm x 7.00 mm)
CY7C1021V33L-15BAI
BA48
48-Ball Mini Ball Grid Array (7.00 mm x 7.00 mm)
CY7C1021V33-15VI
V34
44-Lead (400-Mil) Molded SOJ
CY7C1021V33L-15ZI
Z44
44-Lead TSOP Type II
Document #: 38-05060 Rev. **
Operating
Range
44-Lead (400-Mil) Molded SOJ
CY7C1021V33-12VC
CY7C1021V33-12VI
15
Package
Name
Commercial
Industrial
Page 8 of 11
CY7C1021V
Package Diagrams
48-Ball (7.00 mm x 7.00 mm) FBGA BA48
51-85096-C
Document #: 38-05060 Rev. **
Page 9 of 11
CY7C1021V
Package Diagrams (continued)
44-Lead (400-Mil) Molded SOJ V34
51-85082-B
44-Pin TSOP II Z44
51-85087-A
Document #: 38-05060 Rev. **
Page 10 of 11
© Cypress Semiconductor Corporation, 2001. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize
its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
CY7C1021V
Document Title: CY7C1021V 64K x 16 Static RAM
Document Number: 38-05060
REV.
ECN NO.
Issue
Date
Orig. of
Change
Description of Change
**
107251
09/10/01
SZV
Change from Spec number: 38-00544 to 38-05060
Document #: 38-05060 Rev. **
Page 11 of 11