■ Temperature Ranges:
❐ Industrial: –40 °C to 85 °C
❐ Automotive-A: –40 °C to 85 °C
■ Pin and Function Compatible with CY7C1021B
■ High Speed
❐ t
= 10 ns
AA
■ Low Active Power
❐ I
= 80 mA at 10 ns
CC
■ Low CMOS Standby Power
❐ I
= 3 mA
SB2
■ 2.0 V Data Retention
■ Automatic Power Down when Deselected
■ CMOS for Optimum Speed and Power
■ Independent Control of Upper and Lower Bits
■ Available in Pb-free 44-pin 400-Mil Wide Molded SOJ and
44-pin TSOP II Packages
Functional Description
The CY7C1021D 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. The input and output pins (I/O
through I/O15) are placed in a high impedance state when the
device is deselected (CE
HIGH), outputs are disabled (OE
HIGH), BHE and BLE are disabled (BHE, BLE HIGH), or during
a write operation (CE
LOW and WE LOW).
Write to the device by taking Chip Enable (CE) and Write Enable
) inputs LOW. If Byte Low Enable (BLE) is LOW, then data
(WE
from I/O pins (I/O
specified on the address pins (A
Enable (BHE
I/O
) is written into the location specified on the address pins
15
(A
through A15).
0
Read from the device by taking Chip Enable (CE
Enable (OE
) LOW while forcing the Write Enable (WE) HIGH. If
Byte Low Enable (BLE
location specified by the address pins appears on I/O
Byte High Enable (BHE
appears on I/O
complete description of read and write modes.
through I/O7), is written into the location
0
) is LOW, then data from I/O pins (I/O8 through
through A15). If Byte High
0
) and Output
) is LOW, then data from the memory
to I/O7. If
to I/O15. See the Truth Table on page 10 for a
) is LOW, then data from memory
8
0
The CY7C1021D device is suitable for interfacing with
processors that have TTL I/P levels. It is not suitable for
processors that require CMOS I/P levels. Please see Electrical
Characteristics on page 4 for more details and suggested
alternatives.
0
Cypress Semiconductor Corporation•198 Champion Court•San Jose, CA 95134-1709•408-943-2600
Document Number: 38-05462 Rev. *M Revised June 19, 2013
(min) = –2.0 V and VIH(max) = VCC + 1 V for pulse durations of less than 5 ns.
3. Please note that the maximum V
OH
limit does not exceed minimum CMOS V
IH
of 3.5 V. If you are interfacing this SRAM with 5 V legacy processors that require
a minimum V
IH
of 3.5 V, please refer to Application Note AN6081 for technical details and options you may consider.
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
Ambient Temperature with
Power Applied ......................................... –55 C to +125 C
Supply Voltage on
V
to Relative GND
CC
DC Voltage Applied to Outputs
in High Z State
[2]
................................–0.5 V to +6.0 V
[2]
................................–0.5 V to VCC + 0.5 V
DC Input Voltage
Current into Outputs (LOW) ........................................ 20 mA
Static Discharge Voltage
(per MIL-STD-883, Method 3015) .......................... > 2001 V
Latch Up Current ................................................... > 200 mA
Operating Range
Range
Industrial–40 C to +85 C5 V 10%10 ns
Automotive-A
Electrical Characteristics
Over the Operating Range
ParameterDescriptionTest Conditions
[2]
............................–0.5 V to VCC + 0.5 V
Ambient
Temperature
V
CC
Speed
-10 (Industrial /
Automotive-A)
MinMax
Unit
V
V
V
V
I
IX
I
OZ
I
CC
I
SB1
I
SB2
OH
OL
IH
IL
Output HIGH VoltageIOH = –4.0 mA2.4–V
= –0.1 mA–3.4
I
OH
[3]
Output LOW VoltageIOL = 8.0 mA–0.4V
Input HIGH Voltage2.2V
Input LOW Voltage
Input Leakage CurrentGND < VI < V
[2]
CC
0.50.8V
1+1A
+ 0.5 VV
CC
Output Leakage CurrentGND < VI < VCC, Output Disabled1+1A
VCC Operating Supply CurrentVCC = Max, I
f = f
= 1/t
max
OUT
RC
= 0 mA,
100 MHz–80mA
83 MHz–72mA
66 MHz–58mA
40 MHz–37mA
Automatic CE Power Down
Current –TTL Inputs
Automatic CE Power Down
Current – CMOS Inputs
Max VCC, CE > VIH, VIN > VIH or VIN < VIL, f = f
max
Max VCC, CE > VCC – 0.3 V, VIN > VCC – 0.3 V, or
V
< 0.3 V, f = 0
IN
–10mA
–3mA
Document Number: 38-05462 Rev. *M Page 4 of 17
Page 5
CY7C1021D
Capacitance
90%
10%
3.0 V
GND
90%
10%
ALL INPUT PULSES
* CAPACITIVE LOAD CONSISTS
OF ALL COMPONENTS OF THE
TEST ENVIRONMENT
Rise Time: 3 ns
Fall Time: 3 ns
30 pF*
OUTPUT
Z = 50
50
1.5 V
(b)
(a)
5 V
OUTPUT
5 pF
(c)
R1 480
R2
255
High-Z characteristics:
INCLUDING
JIG AND
SCOPE
Notes
4. Tested initially and after any design or process changes that may affect these parameters.
5. AC characteristics (except High Z) are tested using the load conditions shown in Figure 2 (a). High Z characteristics are tested for all speeds using the test load
shown in Figure 2 (c).
DescriptionTest Conditions44-pin SOJ44-pin TSOP II Unit
Thermal resistance
(junction to ambient)
Thermal resistance
(junction to case)
AC Test Loads and Waveforms
Figure 2. AC Test Loads and Waveforms
Still Air, soldered on a 3 × 4.5 inch, four-layer
printed circuit board
[5]
59.5253.91C/W
36.7521.24C/W
Document Number: 38-05462 Rev. *M Page 5 of 17
Page 6
CY7C1021D
Data Retention Characteristics
4.5 V4.5 V
t
CDR
V
DR
> 2 V
DATA RETENTION MODE
t
R
CE
V
CC
Notes
6. V
IL
(min) = –2.0 V and VIH(max) = VCC + 1 V for pulse durations of less than 5 ns.
7. Full device operation requires linear V
CC
ramp from V
DR
to V
CC(min)
> 50 s or stable at V
CC(min)
> 50 s.
Over the Operating Range
ParameterDescriptionConditionsMinMaxUnit
V
DR
I
CCDR
t
CDR
[7]
t
R
[6]
VCC for Data Retention2.0–V
Data Retention CurrentVCC = VDR = 2.0 V, CE > VCC – 0.3 V,
V
> VCC – 0.3 V or VIN < 0.3 V
IN
–3mA
Chip Deselect to Data Retention Time0–ns
Operation Recovery Timet
RC
–ns
Data Retention Waveform
Figure 3. Data Retention Waveform
Document Number: 38-05462 Rev. *M Page 6 of 17
Page 7
CY7C1021D
Switching Characteristics
Notes
8. 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 I
OL/IOH
and 30-pF load capacitance.
9. t
POWER
gives the minimum amount of time that the power supply should be at typical VCC values until the first memory access can be performed.
10. At any given temperature and voltage condition, t
HZCE
is less than t
LZCE
, t
HZOE
is less than t
LZOE
, and t
HZWE
is less than t
LZWE
for any given device.
11. t
HZOE
, t
HZBE
, t
HZCE
, and t
HZWE
are specified with a load capacitance of 5 pF as in (c) of Figure 2 on page 5. Transition is measured when the outputs enter a high impedance
state.
12. 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 /BL E must be LOW to initiate a write, and
a LOW to HIGH transition on any 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.
*I3245199PRAS04/30/2011 Dislodged Automotive information to new datasheet (001-68372).
*J3086499AJU06/07/2011Updated Functional Description (Removed “For best practice
*K3540685TAVA / AJU03/06/2012 Updated Features (Included Automotive-A Range information).
Submission
Date
Pb-free Offering in the Ordering Information
Added T
Shaded Ordering Information
Spec in Switching Characteristics Table
power
Removed Commercial Operating range
Added I
Updated Thermal Resistance table
values for the frequencies 83MHz, 66MHz and 40MHz
CC
Added Automotive Product Information
Updated Ordering Information Table
Changed Overshoot spec from V
100MHz, 55 mA to 72 mA for 83MHz, 45 mA to 58 mA for 66MHz, 30 mA to
37 mA for 40MHz
Changed Automotive operating range I
83MHz, 90 mA to 100 mA for 66MHz, 60 mA to 63 mA for 40MHz
08/14/09For 12 ns speed, changed I
For 12 ns speed, changed I
15 mA to 10 mA
Removed the Note “Automotive Product Information is Preliminary.” in page 3.
Added Acronyms and Units of Measure.
Updated in new template.
recommendations, refer to the Cypress application note AN1064, SRAM
System Guidelines.”).
Updated Selection Guide (Included Automotive-A Range information).
Updated Operating Range (Included Automotive-A Range information).
Updated Electrical Characteristics (Included Automotive-A Range
information).
Updated Switching Characteristics (Included Automotive-A Range
information).
Updated Ordering Information (included the part number
CY7C1021D-10ZSXA).
Updated Package Diagrams.
Updated Package Diagrams:
spec 51-85082 – Changed revision from *D to *E.
spec 51-85087 – Changed revision from *D to *E.
Completing Sunset Review.
Updated Electrical Characteristics.
Added one more Test Condition “I
maximum value corresponding to that Test Condition.
Added Note 3 and referred the same note in maximum value for VOH parameter
corresponding to Test Condition “I
= –0.1mA” for VOH parameter and added
OH
= –0.1mA”.
OH
Document Number: 38-05462 Rev. *M Page 16 of 17
Page 17
CY7C1021D
Sales, Solutions, and Legal Information
Worldwide Sales and Design Support
Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office
closest to you, visit us at cypress.com/sales.
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 Sou rce Code and derivative works for the sole purpose of cr eating 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 Number: 38-05462 Rev. *M Revised June 19, 2013Page 17 of 17
All products and company names mentioned in this document may be the trademarks of their respective holders.
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