CY7C1021BN, CY7C10211BN
1-Mbit (64 K × 16) Static RAM
1-Mbit (64 K × 16) Static RAM
Features
■
Functional Description
Temperature ranges
❐ Commercial: 0 °C to 70 °C
❐ Industrial: –40 °C to 85 °C
❐ Automotive-A: –40 °C to 85 °C
❐ Automotive-E: –40 °C to 125 °C
The CY7C1021BN/CY7C10211BN 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.
■
High speed
❐ tAA = 15 ns (Automotive)
■
Complementary metal oxide semiconductor (CMOS) for
optimum speed/power
■
Low active power
❐ 825 mW (maximum)
■
Automatic power down when deselected
■
Independent control of upper and lower bits
■
Available in Pb-free and non Pb-free 44-pin TSOP II and 44-pin
400-mil-wide SOJ
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 the input/output (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 CE and
Output Enable (OE) LOW while forcing WE HIGH. If BLE is LOW,
then data from the memory location specified by the address pins
appears on I/O1 to I/O8. If BHE is LOW, then data from memory
appears on I/O9 to I/O16. See the Truth Table on page 9 for a
complete description of read and write modes.
The I/O 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, WE LOW).
The CY7C1021BN/CY7C10211BN is available in standard
44-pin TSOP type II and 44-pin 400-mil-wide SOJ packages.
Use part number CY7C1021BN when ordering 15 ns tAA.
Logic Block Diagram
64K x 16
RAM Array
512 X 2048
Sense Amps
A7
A6
A5
A4
A3
A2
A1
A0
Row Decoder
Data In Drivers
I/O1–I/O8
I/O9–I/O16
Column Decoder
A8
A9
A10
A11
A12
A13
A14
A15
BHE
WE
CE
OE
BLE
Cypress Semiconductor Corporation
Document #: 001-06494 Rev. *D
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised July 26, 2011
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CY7C1021BN, CY7C10211BN
Contents
Selection Guide ................................................................ 3
Pin Configuration ............................................................. 3
Pin Definitions .................................................................. 3
Maximum Ratings ............................................................. 4
Operating Range ............................................................... 4
Electrical Characteristics ................................................. 4
Capacitance ...................................................................... 5
Thermal Resistance .......................................................... 5
AC Test Loads and Waveforms ....................................... 5
Switching Characteristics ................................................ 6
Switching Waveforms ...................................................... 7
Truth Table ........................................................................ 9
Document #: 001-06494 Rev. *D
Ordering Information ...................................................... 10
Ordering Code Definitions ......................................... 10
Package Diagrams .......................................................... 11
Acronyms ........................................................................ 12
Document Conventions ................................................. 12
Units of Measure ....................................................... 12
Document History Page ................................................. 13
Sales, Solutions, and Legal Information ...................... 14
Worldwide Sales and Design Support ....................... 14
Products .................................................................... 14
PSoC Solutions ......................................................... 14
Page 2 of 14
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CY7C1021BN, CY7C10211BN
Selection Guide
Description
Maximum access time (ns)
Maximum operating current (mA)
Maximum CMOS standby current (mA)
Commercial/Industrial
Automotive-A
Automotive-E
Commercial/Industrial
Commercial/Industrial (L version)
Automotive-A (L version)
Automotive-E
CY7C1021B-15
15
130
130
130
10
0.5
0.5
15
Pin Configuration
Figure 1. 44-pin SOJ/TSOP II (Top View)
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
13
14
15
16
17
18
19
20
21
22
37
36
35
34
33
32
31
30
29
28
27
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
Pin Definitions
Pin Name
Pin Number
I/O Type
A0–A15
1–5,18–21, 24–27, 42–44
Input
I/O1–I/O16
7–10, 13–16, 29–32,
35–38
Description
Address inputs used to select one of the address locations.
Input/Output Bidirectional data I/O lines. Used as input or output lines depending on
operation.
NC
22, 23, 28
WE
17
Input/Control Write enable input, active LOW. When selected LOW, a write is conducted.
When deselected HIGH, a read is conducted.
CE
6
Input/Control Chip enable input, active LOW. When LOW, selects the chip. When HIGH,
deselects the chip.
BHE, BLE
40, 39
OE
41
VSS
12, 34
VCC
11, 33
Document #: 001-06494 Rev. *D
No Connect Not connected to the die.
Input/Control Byte enable select inputs, active LOW. BHE controls I/O16–I/O9, BLE
controls I/O8–I/O1.
Input/Control Output enable, active LOW. Controls the direction of the I/O pins. When
LOW, the I/O pins are allowed to behave as outputs. When deasserted
HIGH, I/O pins are tristated, and act as input data pins.
Ground
Ground for the device. Should be connected to ground of the system.
Power Supply Power supply inputs to the device.
Page 3 of 14
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CY7C1021BN, CY7C10211BN
Maximum Ratings
Current into outputs (LOW) ........................................ 20 mA
Static discharge voltage
(per MIL-STD-883, Method 3015) .......................... > 2001 V
Exceeding the maximum ratings may impair the useful life of the
device. These user guidelines are not tested.
Storage temperature ................................ –65 C to +150 C
Latch-up current .................................................... > 200 mA
Ambient temperature with
power applied .......................................... –55C to +125 C
Operating Range
Range
Supply voltage on
VCC relative to GND[1] .................................–0.5 V to +7.0 V
Ambient Temperature (TA)[2]
VCC
0 C to +70 C
5 V 10%
Commercial
DC voltage applied to outputs
in High Z state[1] ................................. –0.5 V to VCC + 0.5 V
Industrial
DC input voltage[1] .............................. –0.5 V to VCC + 0.5 V
–40 C to +85 C
Automotive-A
–40 C to +85 C
Automotive-E
–40 C to +125 C
Electrical Characteristics
Over the operating range
Parameter
Description
Test Conditions
VOH
Output HIGH voltage
VCC = Min, IOH = –4.0 mA
VOL
Output LOW voltage
VCC = Min, IOL = 8.0 mA
VIH
Input HIGH voltage
voltage[1]
VIL
Input LOW
IIX
Input leakage current
IOZ
ICC
ISB1
ISB2
Output leakage current
VCC operating supply current
GND < VI < VCC
GND < VI < VCC,
Output Disabled
VCC = Max,
IOUT = 0 mA,
f = fMAX = 1/tRC
-15
Unit
Min
Max
2.4
–
V
–
0.4
V
2.2
6.0
V
–0.5
0.8
V
Commercial / Industrial
–1
+1
A
Automotive-A
–1
+1
A
Automotive-E
–4
+4
A
Commercial / Industrial
–1
+1
A
Automotive-A
–1
+1
A
Automotive-E
–4
+4
A
Commercial / Industrial
–
130
mA
Automotive-A
–
130
Automotive-E
–
130
Automatic CE power down
current—TTL inputs
Max VCC, CE > VIH,
Commercial / Industrial
VIN > VIH or VIN < VIL,
Automotive-A
f = fMAX
Automotive-E
–
40
–
40
–
50
Automatic CE power down
current—CMOS inputs
Max VCC,
CE > VCC – 0.3 V,
VIN > VCC – 0.3 V,
or VIN < 0.3 V, f = 0
Commercial / Industrial
–
10
Commercial / Industrial (L)
–
0.5
Automotive-A (L)
–
0.5
Automotive-E
–
15
mA
mA
Notes
1. VIL (min.) = –2.0 V and VIH(max) = VCC + 0.5 V for pulse durations of less than 20 ns.
2. TA is the “Instant On” case temperature.
Document #: 001-06494 Rev. *D
Page 4 of 14
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CY7C1021BN, CY7C10211BN
Capacitance
Parameter[3]
CIN
Description
Test Conditions
COUT
Max
Unit
8
pF
8
pF
TA = 25 C, f = 1 MHz, VCC = 5.0 V
Input capacitance
Output capacitance
Thermal Resistance
Parameter[3]
Description
JA
Thermal resistance
(junction to ambient)
JC
Thermal resistance
(junction to case)
Test Conditions
44-pin SOJ
Test conditions follow standard test
methods and procedures for measuring
thermal impedance, per EIA / JESD51.
44-pin TSOP II Unit
64.32
76.89
C/W
31.03
14.28
C/W
AC Test Loads and Waveforms
Figure 2. AC Test Loads and Waveforms
R 481
5V
R 481
5V
OUTPUT
3.0 V
OUTPUT
30 pF
R2
255
INCLUDING
JIG AND
SCOPE
(a)
OUTPUT
Equivalent to: THÉVENIN
EQUIVALENT
5 pF
R2
GND
255
INCLUDING
JIG AND
SCOPE
(b)
167
Rise Time: 1 V/ns
ALL INPUT PULSES
90%
10%
90%
10%
Fall Time: 1 V/ns
1.73 V
30 pF
Note
3. Tested initially and after any design or process changes that may affect these parameters.
Document #: 001-06494 Rev. *D
Page 5 of 14
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CY7C1021BN, CY7C10211BN
Switching Characteristics
Over the operating range
Parameter[4]
Description
CY7C1021B-15
Min
Max
Unit
Read Cycle
tRC
Read cycle time
15
–
ns
tAA
Address to data valid
–
15
ns
tOHA
Data hold from address change
3
–
ns
tACE
CE LOW to data valid
–
15
ns
tDOE
OE LOW to data valid
–
7
ns
tLZOE
OE LOW to low Z[4]
0
–
ns
–
7
ns
Z[5, 6]
OE HIGH to high
tHZOE
Z[5]
tLZCE
CE LOW to low
3
–
ns
tHZCE
CE HIGH to high Z[5, 6]
–
7
ns
tPU
CE LOW to power up
0
–
ns
tPD
CE HIGH to power down
–
15
ns
tDBE
Byte enable to data valid
–
7
ns
tLZBE
Byte enable to low Z[5]
0
–
ns
tHZBE
Byte disable to high Z[5, 6]
–
7
ns
Write Cycle
[7]
tWC
Write cycle time
15
–
ns
tSCE
CE LOW to write end
10
–
ns
tAW
Address setup to write end
10
–
ns
tHA
Address hold from write end
0
–
ns
tSA
Address setup to write start
0
–
ns
tSD
tHD
Data setup to write end
Data hold from write end
8
0
–
–
ns
ns
tLZWE
WE HIGH to low Z[5]
3
–
ns
–
7
ns
9
–
ns
Z[5, 6]
tHZWE
WE LOW to high
tBW
Byte enable to write end
Notes
4. Test conditions assume signal transition time of 3 ns or less, timing reference levels of 1.5 V, input pulse levels of 0 to 3.0 V, and output loading of the specified IOL/IOH
and 30 pF load capacitance.
5. At any temperature and voltage condition, tHZCE is less than tLZCE, tHZOE is less than tLZOE, tHZBE is less than tLZBE, and tHZWE is less than tLZWE for any device.
6. 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.
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 setup and hold timing should be referenced to the leading edge of the signal that terminates
the write.
Document #: 001-06494 Rev. *D
Page 6 of 14
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CY7C1021BN, CY7C10211BN
Switching Waveforms
Figure 3. Read Cycle No. 1 [8, 9]
tRC
ADDRESS
tOHA
DATA OUT
tAA
PREVIOUS DATA VALID
DATA VALID
Figure 4. Read Cycle No. 2 (OE Controlled) [9, 10]
ADDRESS
tRC
CE
tACE
OE
tHZOE
tDOE
BHE, BLE
tLZOE
tHZCE
tDBE
tLZBE
DATA OUT
HIGH IMPEDANCE
tLZCE
VCC
SUPPLY
CURRENT
tHZBE
DATA VALID
HIGH
IMPEDANCE
tPD
tPU
50%
50%
IICC
CC
IISB
SB
Notes
8. Device is continuously selected. OE, CE, BHE, and BHE = VIL.
9. WE is HIGH for read cycle.
10. Address valid prior to or coincident with CE transition LOW.
Document #: 001-06494 Rev. *D
Page 7 of 14
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CY7C1021BN, CY7C10211BN
Figure 5. Write Cycle No. 1 (CE Controlled) [11, 12]
tWC
ADDRESS
tSA
CE
tSCE
tAW
tHA
tPWE
WE
tBW
BHE, BLE
tSD
tHD
DATA I/O
Figure 6. 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
Notes
11. Data I/O is high impedance if OE or BHE and/or BLE= VIH.
12. If CE goes HIGH simultaneously with WE going HIGH, the output remains in a high impedance state.
Document #: 001-06494 Rev. *D
Page 8 of 14
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CY7C1021BN, CY7C10211BN
Figure 7. Write Cycle No. 3 (WE Controlled, OE LOW)
tWC
ADDRESS
tSCE
CE
tAW
tHA
tSA
tPWE
WE
tBW
BHE, BLE
tHZWE
tSD
tHD
DATA I/O
tLZWE
Truth Table
CE
OE
WE
BLE
BHE
I/O1–I/O8
I/O9–I/O16
H
X
X
X
X
High Z
High Z
L
L
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
X
L
Mode
Power down
Power
Standby (ISB)
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
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 #: 001-06494 Rev. *D
Page 9 of 14
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CY7C1021BN, CY7C10211BN
Ordering Information
Cypress offers other versions of this product type in many different configurations and features. The following table contains only the
list of parts that are currently available. For a complete listing of all options, refer to the product summary page at
http://www.cypress.com/products or contact your local sales representative.
Cypress maintains a worldwide network of offices, solution centers, manufacturers’ representatives and distributors. To find the office
closest to you, visit us at http://www.cypress.com/go/datasheet/offices.
Speed
(ns)
15
Ordering Code
CY7C1021BNL-15VXC
Package
Diagram
Package Type
51-85082 44-pin (400-mil) Molded SOJ (Pb-free)
CY7C1021BN-15VXE
Operating
Range
Commercial
Automotive-E
CY7C1021BNL-15ZXI
51-85087 44-pin TSOP Type II (Pb-free)
CY7C1021BNL-15ZSXA
51-85087 44-pin TSOP Type II (Pb-free)
CY7C1021BN-15ZSXE
Industrial
Automotive-A
Automotive-E
Ordering Code Definitions
CY 7 C 1 02 1
X
BN L - 15 XX X X
Temperature Range: X = C or I or A or E
C = Commercial; I = Industrial: A = Automotive-A; E = Automotive-E
Pb-free
Package Type: XX = V or Z or ZS
V = 44-pin (400-mil) Molded SOJ
Z or ZS = 44-pin TSOP Type II
Speed: 15 ns
Low Power
BN = 250 nm Technology
X = blank or 1
blank = 12 ns or 15 ns; 1 = 10 ns
Bus Width: × 16 bits
02 = 2-Mbit density
1 = Fast Asynchronous SRAM family
Technology Code: C = CMOS
Marketing Code: 7 = SRAM
Company ID: CY = Cypress
Document #: 001-06494 Rev. *D
Page 10 of 14
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CY7C1021BN, CY7C10211BN
Package Diagrams
Figure 8. 44-pin Molded SOJ (400-Mil) V44.4
51-85082 *C
Figure 9. 44-pin TSOP Z44-II
51-85087 *C
Document #: 001-06494 Rev. *D
Page 11 of 14
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CY7C1021BN, CY7C10211BN
Acronyms
Acronym
Document Conventions
Description
Units of Measure
BHE
byte high enable
BLE
byte low enable
°C
degree Celsius
CE
CMOS
chip enable
MHz
Mega Hertz
complementary metal oxide semiconductor
A
micro Amperes
I/O
input/output
mA
milli Amperes
OE
output enable
mm
milli meter
SOJ
small outline J-lead
mW
milli Watts
SRAM
static random access memory
ns
nano seconds
TSOP
thin small outline package
ohms
TTL
transistor-transistor logic
%
percent
WE
write enable
pF
pico Farad
V
Volts
W
Watts
Document #: 001-06494 Rev. *D
Symbol
Unit of Measure
Page 12 of 14
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CY7C1021BN, CY7C10211BN
Document History Page
Document Title: CY7C1021BN, CY7C10211BN, 1-Mbit (64 K × 16) Static RAM
Document Number: 001-06494
Rev.
ECN No.
Submission
Date
Orig. of
Change
Description of Change
**
423877
See ECN
NXR
New datasheet
*A
505726
See ECN
NXR
Removed IOS parameter from DC Electrical Characteristics table.
Added Automotive products
Updated ordering Information table
*B
2897061
03/22/10
AJU
Removed obsolete parts from ordering information table
Updated package diagrams
*C
2947254
06/08/10
RAME
Corrected ‘Byte write select inputs’ to ‘Byte Enable select inputs’ on page 2.
Added ohm ()symbol inThevenin equivalent circuit on page 4.
Included THZBE and TLZBE to Switching Characteristics table footnote 2
Included operating range for CY7C1021BNL-15ZXI in ordering information table.
*D
3328634
26/07/2011
AJU
Updated Features (Removed the information associated with speed bins -10 and
-12).
Removed the note “For best practice recommendations, refer to the Cypress
application note, SRAM System Design Guidelines-AN1064.” in page 1 and its
reference in Functional Description.
Updated Functional Description (Removed the information associated with speed
bins -10 and -12).
Updated Selection Guide (Removed the information associated with speed bins
-10 and -12).
Updated Electrical Characteristics (Removed the information associated with
speed bins -10 and -12).
Updated Switching Characteristics (Removed the information associated with
speed bins -10 and -12).
Updated Ordering Information.
Added Acronyms and Units of Measure.
Updated in new template.
Document #: 001-06494 Rev. *D
Page 13 of 14
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Sales, Solutions, and Legal Information
Worldwide Sales and Design Support
Cypress maintains a worldwide network of offices, solution centers, manufacturers’ representatives, and distributors. To find the office
closest to you, visit us at Cypress Locations.
Products
Automotive
Interface
Lighting & Power Control
PSoC Solutions
cypress.com/go/automotive
Clocks & Buffers
cypress.com/go/clocks
psoc.cypress.com/solutions
cypress.com/go/interface
PSoC 1 | PSoC 3 | PSoC 5
cypress.com/go/powerpsoc
cypress.com/go/plc
Memory
Optical & Image Sensing
PSoC
Touch Sensing
USB Controllers
Wireless/RF
cypress.com/go/memory
cypress.com/go/image
cypress.com/go/psoc
cypress.com/go/touch
cypress.com/go/USB
cypress.com/go/wireless
© Cypress Semiconductor Corporation, 2006-2011. 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 product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for
medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress 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 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.
Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign),
United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of,
and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress
integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without
the express written permission of Cypress.
Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not
assume any liability arising out of the application or use of any product or circuit described herein. Cypress 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’ product in a life-support systems application implies that the manufacturer
assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Use may be limited by and subject to the applicable Cypress software license agreement.
Document #: 001-06494 Rev. *D
Revised July 26, 2011
Page 14 of 14
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