Cypress CY62157ELL-55BVXE 8-mbit (512k x 16) static ram Datasheet

CY62157E MoBL®
8-Mbit (512K x 16) Static RAM
Features
also has an automatic power down feature that significantly
reduces power consumption when addresses are not toggling.
Place the device into standby mode when deselected (CE1
HIGH or CE2 LOW or both BHE and BLE are HIGH). The input
or output pins (IO0 through IO15) are placed in a high
impedance state when:
• Deselected (CE1HIGH or CE2 LOW)
• Outputs are disabled (OE HIGH)
• Both Byte High Enable and Byte Low Enable are disabled
(BHE, BLE HIGH)
• Write operation is active (CE1 LOW, CE2 HIGH and WE
LOW)
• Very high speed: 45 ns
— Industrial: –40°C to +85°C
— Automotive-E: –40°C to +125°C
• Wide voltage range: 4.5V–5.5V
• Ultra low standby power
— Typical Standby current: 2 µA
— Maximum Standby current: 8 µA (Industrial)
• Ultra low active power
•
•
•
•
•
— Typical active current: 1.8 mA @ f = 1 MHz
Ultra low standby power
Easy memory expansion with CE1, CE2 and OE features
Automatic power down when deselected
CMOS for optimum speed and power
Available in Pb-free 44-pin TSOP II and 48-ball VFBGA
package
Functional
To write to the device, take Chip Enable (CE1 LOW and CE2
HIGH) and Write Enable (WE) inputs LOW. If Byte Low Enable
(BLE) is LOW, then data from IO pins (IO0 through IO7), is
written into the location specified on the address pins (A0
through A18). If Byte High Enable (BHE) is LOW, then data
from IO pins (IO8 through IO15) is written into the location
specified on the address pins (A0 through A18).
To read from the device, take Chip Enable (CE1 LOW and CE2
HIGH) 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
appear on IO0 to IO7. If Byte High Enable (BHE) is LOW, then
data from memory appears on IO8 to IO15. See the “Truth
Table” on page 9 for a complete description of read and write
modes.
Description[1]
The CY62157E is a high performance CMOS static RAM
organized as 512K words by 16 bits. This device features
advanced circuit design to provide ultra low active current.
This is ideal for providing More Battery Life™ (MoBL®) in
portable applications such as cellular telephones. The device
Logic Block Diagram
ROW DECODER
CE2
512K x 16
RAM Array
CE1
A17
A18
A15
A16
BLE
IO8–IO15
BHE
A14
BHE
IO0–IO7
COLUMN DECODER
A11
A12
A13
Power Down
Circuit
SENSE AMPS
DATA IN DRIVERS
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
WE
CE2
OE
BLE
CE1
Notes
1. For best practice recommendations, please refer to the Cypress application note AN1064, SRAM System Guidelines.
Cypress Semiconductor Corporation
Document #: 38-05695 Rev. *E
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised April 27, 2007
CY62157E MoBL®
Product Portfolio
Power Dissipation
Product
Speed
(ns)
VCC Range (V)
Range
Operating ICC, (mA)
f = 1 MHz
Min
Typ[2]
Max
Standby, ISB2
(µA)
f = fmax
Typ[2]
Max
Typ[2]
Max
Typ[2]
Max
CY62157ELL
Industrial
4.5
5.0
5.5
45
1.8
3
18
25
2
8
CY62157ELL
Automotive
4.5
5.0
5.5
55
1.8
4
18
35
2
30
Pin Configuration
The following pictures show the TSOP II and VFBGA pinouts.[3, 4]
VFBGA
TSOP II
Top View
A4
A3
A2
A1
A0
CE
IO0
IO1
IO2
IO3
VCC
VSS
IO4
IO5
IO6
IO7
WE
A18
A17
A16
A15
A14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
A5
A6
A7
OE
BHE
BLE
IO15
IO14
IO13
IO12
VSS
VCC
IO11
IO10
IO9
IO8
A8
A9
A10
A11
A12
A13
Top View
4
3
1
2
BLE
OE
A0
IO 8
BHE
IO 9
5
6
A1
A2
CE2
A
A3
A4
CE1
IO 0
B
IO 10
A5
A6
IO 1
IO 2
C
VSS
IO11
A17
A7
IO3
Vcc
D
VCC
IO 12
NC
A16
IO 4
Vss
E
IO 14
IO 13
A14
A15
IO 5
IO 6
F
IO 15
NC
A12
A13
WE
IO 7
G
A18
A8
A9
A10
A11
NC
H
Notes
2. Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at VCC = VCC(typ), TA = 25°C.
3. NC pins are not connected on the die.
4. The 44-pin TSOP II package has only one chip enable (CE) pin.
Document #: 38-05695 Rev. *E
Page 2 of 12
CY62157E MoBL®
DC Input Voltage[5, 6] ........................................–0.5V to 6.0V
Maximum Ratings
Exceeding maximum ratings may shorten the battery life of the
device. User guidelines are not tested.
Storage Temperature ................................ –65°C to + 150°C
Ambient Temperature with
Power Applied ........................................... –55°C to + 125°C
Supply Voltage to Ground
Potential .......................................................... –0.5V to 6.0V
DC Voltage Applied to Outputs
in High-Z State[5, 6] ........................................... –0.5V to 6.0V
Output Current into Outputs (LOW) ............................ 20 mA
Static Discharge Voltage .......................................... > 2001V
(MIL-STD-883, Method 3015)
Latch up Current .................................................... > 200 mA
Operating Range
Device
CY62157ELL
Range
Ambient
Temperature
VCC[7]
Industrial
–40°C to +85°C
4.5V to 5.5V
Automotive –40°C to +125°C
Electrical Characteristics
Over the Operating Range
Parameter
Description
45 ns (Industrial)
Test Conditions
Min
Typ[2]
Max
VOH
Output HIGH
Voltage
IOH = –1 mA
2.4
VOL
Output LOW
Voltage
IOL = 2.1 mA
VIH
Input HIGH
Voltage
VCC = 4.5V to 5.5V
2.2
VCC + 0.5
VIL
Input LOW
Voltage
VCC = 4.5V to 5.5V
–0.5
IIX
Input Leakage
Current
GND < VI < VCC
IOZ
Output Leakage GND < VO < VCC, Output Disabled
Current
ICC
VCC Operating
Supply
Current
f = fmax = 1/tRC VCC = VCC(max)
IOUT = 0 mA
f = 1 MHz
CMOS levels
ISB1
Automatic CE
Power Down
Current —
CMOS Inputs
ISB2 [8]
Automatic CE
Power Down
Current —
CMOS Inputs
55 ns (Automotive)
Min
Typ[2]
Unit
Max
2.4
V
0.4
0.4
V
2.2
VCC + 0.5
V
0.8
–0.5
0.8
V
–1
+1
–4
+4
µA
–1
+1
–4
+4
µA
mA
18
25
18
35
1.8
3
1.8
4
CE1 > VCC − 0.2V or CE2 < 0.2V,
VIN > VCC – 0.2V, VIN < 0.2V,
f = fmax (Address and Data Only),
f = 0 (OE, BHE, BLE and WE),
VCC = VCC(max)
2
8
2
30
µA
CE1 > VCC – 0.2V or CE2 < 0.2V,
VIN > VCC – 0.2V or VIN < 0.2V,
f = 0, VCC = VCC(max)
2
8
2
30
µA
Capacitance[9]
Parameter
Description
CIN
Input Capacitance
COUT
Output Capacitance
Test Conditions
TA = 25°C, f = 1 MHz, VCC = VCC(typ)
Max
Unit
10
pF
10
pF
Notes
5. VIL(min) = –2.0V for pulse durations less than 20 ns for I < 30 mA.
6. VIH(max) = VCC + 0.75V for pulse durations less than 20 ns.
7. Full device AC operation assumes a 100 µs ramp time from 0 to VCC(min) and 200 µs wait time after VCC stabilization.
8. Only chip enables (CE1 and CE2) and byte enables (BHE and BLE) need to be tied to CMOS levels to meet the ISB2 / ICCDR spec. Other inputs can be left floating.
9. Tested initially and after any design or process changes that may affect these parameters.
Document #: 38-05695 Rev. *E
Page 3 of 12
CY62157E MoBL®
Thermal Resistance [9]
TSOP II
VFBGA
Unit
ΘJA
Parameter
Thermal Resistance Still Air, soldered on a 3 × 4.5 inch,
(Junction to Ambient) two-layer printed circuit board
Description
Test Conditions
77
72
°C/W
ΘJC
Thermal Resistance
(Junction to Case)
13
8.86
°C/W
AC Test Loads and Waveforms
Figure 1. AC Test Loads and Waveforms
VCC
OUTPUT
R1
3V
30 pF
10%
GND
Rise Time = 1 V/ns
R2
INCLUDING
JIG AND
SCOPE
ALL INPUT PULSES
90%
90%
10%
Fall Time = 1 V/ns
Equivalent to:
THEVENIN EQUIVALENT
RTH
OUTPUT
V
Parameters
Values
Unit
R1
1800
Ω
R2
990
Ω
RTH
639
Ω
VTH
1.77
V
Data Retention Characteristics
Over the Operating Range
Parameter
Description
VDR
VCC for Data Retention
ICCDR [8]
Data Retention Current
tCDR
[9]
Unit
Industrial
8
µA
Automotive
30
Min
2
VCC=2V, CE1> VCC – 0.2V or CE2 < 0.2V,
VIN > VCC – 0.2V or VIN < 0.2V
Chip Deselect to Data
Retention Time
tR [10]
Typ [2]
Max
Conditions
Operation Recovery Time
V
0
ns
tRC
ns
Data Retention Waveform[11]
Figure 2. Data Retention Waveform
DATA RETENTION MODE
VCC
VCC(min)
tCDR
VDR > 2V
VCC(min)
tR
CE1 or
BHE.BLE
or
CE2
Notes
10. Full device operation requires linear VCC ramp from VDR to VCC(min) > 100 µs or stable at VCC(min) > 100 µs.
11. BHE.BLE is the AND of both BHE and BLE. Deselect the chip by either disabling chip enable signals or by disabling both BHE and BLE.
Document #: 38-05695 Rev. *E
Page 4 of 12
CY62157E MoBL®
Switching Characteristics
Over the Operating Range[12, 13]
Parameter
Description
45 ns (Industrial)
Min
Max
55 ns (Automotive)
Min
Max
Unit
Read Cycle
45
tRC
Read Cycle Time
tAA
Address to Data Valid
tOHA
Data Hold from Address Change
tACE
CE1 LOW and CE2 HIGH to Data Valid
tDOE
OE LOW to Data Valid
tLZOE
OE LOW to LOW-Z[14]
tHZOE
OE HIGH to High-Z[14, 15]
55
45
10
ns
55
10
45
ns
55
22
5
25
5
18
ns
ns
ns
ns
20
ns
CE1 LOW and CE2 HIGH to
Low-Z[14]
tHZCE
CE1 HIGH and CE2 LOW to
High-Z[14, 15]
tPU
CE1 LOW and CE2 HIGH to Power Up
tPD
CE1 HIGH and CE2 LOW to Power Down
45
55
ns
tDBE
BLE/BHE LOW to Data Valid
45
55
ns
20
ns
tLZCE
Low-Z[14]
tLZBE
BLE/BHE LOW to
tHZBE
BLE/BHE HIGH to HIGH-Z[14, 15]
10
10
18
0
ns
20
0
10
10
18
ns
ns
ns
Write Cycle[16]
tWC
Write Cycle Time
45
55
ns
tSCE
CE1 LOW and CE2 HIGH to Write End
35
40
ns
tAW
Address Setup to Write End
35
40
ns
tHA
Address Hold from Write End
0
0
ns
tSA
Address Setup to Write Start
0
0
ns
tPWE
WE Pulse Width
35
40
ns
tBW
BLE/BHE LOW to Write End
35
40
ns
tSD
Data Setup to Write End
25
25
ns
tHD
Data Hold from Write End
0
0
ns
High-Z[14, 15]
tHZWE
WE LOW to
tLZWE
WE HIGH to Low-Z[14]
18
10
20
10
ns
ns
Notes
12. Test conditions for all parameters other than tri-state parameters assume signal transition time of 3 ns or less, timing reference levels of VCC(typ)/2, input pulse
levels of 0 to VCC(typ), and output loading of the specified IOL/IOH as shown in the “AC Test Loads and Waveforms” on page 4.
13. AC timing parameters are subject to byte enable signals (BHE or BLE) not switching when chip is disabled. See application note AN13842 for further clarification.
14. At any temperature and voltage condition, tHZCE is less than tLZCE, tHZBE is less than tLZBE, tHZOE is less than tLZOE, and tHZWE is less than tLZWE for any device.
15. tHZOE, tHZCE, tHZBE, and tHZWE transitions are measured when the outputs enter a high impedance state.
16. The internal write time of the memory is defined by the overlap of WE, CE1 = VIL, BHE, BLE, or both = VIL, and CE2 = VIH. All signals must be active to initiate a
write and any of these signals can terminate a write by going inactive. The data input setup and hold timing must be referenced to the edge of the signal that
terminates the write.
Document #: 38-05695 Rev. *E
Page 5 of 12
CY62157E MoBL®
Switching Waveforms
Read Cycle No. 1 (Address Transition Controlled)[17, 18]
Figure 3. Read Cycle No. 1
tRC
RC
ADDRESS
tOHA
DATA OUT
tAA
PREVIOUS DATA VALID
DATA VALID
Read Cycle No. 2 (OE Controlled)[18, 19]
Figure 4. Read Cycle No. 2
ADDRESS
tRC
CE1
tPD
tHZCE
CE2
tACE
BHE/BLE
tDBE
tHZBE
tLZBE
OE
tHZOE
tDOE
DATA OUT
tLZOE
HIGH IMPEDANCE
HIGH
IMPEDANCE
DATA VALID
tLZCE
VCC
SUPPLY
CURRENT
tPU
50%
50%
ICC
ISB
Notes
17. The device is continuously selected. OE, CE1 = VIL, BHE, BLE or both = VIL, and CE2 = VIH.
18. WE is HIGH for read cycle.
19. Address valid before or similar to CE1, BHE, BLE transition LOW and CE2 transition HIGH.
Document #: 38-05695 Rev. *E
Page 6 of 12
CY62157E MoBL®
Switching Waveforms (continued)
Write Cycle No. 1 (WE Controlled)[16, 20, 21]
Figure 5. Write Cycle No. 1
tWC
ADDRESS
tSCE
CE1
CE2
tAW
tHA
tSA
WE
tPWE
tBW
BHE/BLE
tHD
OE
DATA IO
tSD
NOTE 22
VALID DATA
tHZOE
Write Cycle No. 2 (CE1 or CE2 Controlled)[16, 20, 21]
Figure 6. Write Cycle No. 2
tWC
ADDRESS
tSCE
CE1
CE2
tSA
tAW
tHA
tPWE
WE
tBW
BHE/BLE
OE
DATA IO
tSD
NOTE 22
tHD
VALID DATA
tHZOE
Notes
20. Data IO is high impedance if OE = VIH.
21. If CE1 goes HIGH and CE2 goes LOW simultaneously with WE = VIH, the output remains in a high impedance state.
22. During this period, the IOs are in output state. Do not apply input signals.
Document #: 38-05695 Rev. *E
Page 7 of 12
CY62157E MoBL®
Switching Waveforms (continued)
Write Cycle No. 3 (WE Controlled, OE LOW)[21]
Figure 7. Write Cycle No. 3
tWC
ADDRESS
tSCE
CE1
CE2
tBW
BHE/BLE
tAW
tHA
tSA
tPWE
WE
tSD
DATA IO
NOTE 22
tHD
VALID DATA
tLZWE
tHZWE
Write Cycle No. 4 (BHE/BLE Controlled, OE LOW)[21]
Figure 8. Write Cycle No. 4
tWC
ADDRESS
CE1
CE2
tSCE
tAW
tHA
tBW
BHE/BLE
tSA
tPWE
WE
tSD
DATA IO
NOTE 22
Document #: 38-05695 Rev. *E
tHD
VALID DATA
Page 8 of 12
CY62157E MoBL®
Truth Table
CE1
CE2
WE
OE
BHE
BLE
H
X
X
X
X
X
X
L
X
X
X
X
X
X
X
L
H
H
L
H
L
Inputs/Outputs
Mode
Power
High-Z
Deselect/Power Down
Standby (ISB)
X
High-Z
Deselect/Power Down
Standby (ISB)
H
H
High-Z
Deselect/Power Down
Standby (ISB)
L
L
L
Data Out (IO0–IO15)
Read
Active (ICC)
H
L
H
L
Data Out (IO0–IO7);
High-Z (IO8–IO15)
Read
Active (ICC)
H
H
L
L
H
High-Z (IO0–IO7);
Data Out (IO8–IO15)
Read
Active (ICC)
L
H
H
H
L
H
High-Z
Output Disabled
Active (ICC)
L
H
H
H
H
L
High-Z
Output Disabled
Active (ICC)
L
H
H
H
L
L
High-Z
Output Disabled
Active (ICC)
L
H
L
X
L
L
Data In (IO0–IO15)
Write
Active (ICC)
L
H
L
X
H
L
Data In (IO0–IO7);
High-Z (IO8–IO15)
Write
Active (ICC)
L
H
L
X
L
H
High-Z (IO0–IO7);
Data In (IO8–IO15)
Write
Active (ICC)
Ordering Information
Speed
(ns)
Ordering Code
Package
Diagram
Package Type
Operating
Range
45
CY62157ELL-45ZSXI
51-85087
44-pin Thin Small Outline Package Type II (Pb-free)
Industrial
55
CY62157ELL-55ZSXE
51-85087
44-pin Thin Small Outline Package Type II (Pb-free)
Automotive
CY62157ELL-55BVXE
51-85150
48-ball Very Fine Pitch Ball Grid Array (Pb-free)
Contact your local Cypress sales representative for availability of these parts.
Document #: 38-05695 Rev. *E
Page 9 of 12
CY62157E MoBL®
Package Diagrams
Figure 9. 48-Ball VFBGA (6 x 8 x 1 mm), 51-85150
BOTTOM VIEW
TOP VIEW
A1 CORNER
Ø0.05 M C
Ø0.25 M C A B
A1 CORNER
Ø0.30±0.05(48X)
2
3
4
5
6
6
5
4
3
2
1
C
C
E
F
G
D
E
2.625
D
0.75
A
B
5.25
A
B
8.00±0.10
8.00±0.10
1
F
G
H
H
A
1.875
A
B
0.75
6.00±0.10
3.75
6.00±0.10
0.10 C
0.21±0.05
0.25 C
0.55 MAX.
B
0.15(4X)
Document #: 38-05695 Rev. *E
1.00 MAX
0.26 MAX.
SEATING PLANE
C
51-85150-*D
Page 10 of 12
CY62157E MoBL®
Package Diagrams (continued)
Figure 10. 44-Pin TSOP II, 51-85087
51-85087-*A
MoBL is a registered trademark, and More Battery Life is a trademark of Cypress Semiconductor. All product and company names
mentioned in this document are the trademarks of their respective holders.
Document #: 38-05695 Rev. *E
Page 11 of 12
© Cypress Semiconductor Corporation, 2004-2007. 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.
CY62157E MoBL®
Document History Page
Document Title: CY62157E MoBL®, 8-Mbit (512K x 16) Static RAM
Document Number: 38-05695
REV.
ECN NO. Issue Date
Orig. of
Change
Description of Change
**
291273
See ECN
PCI
New data sheet
*A
457689
See ECN
NXR
Added Automotive Product
Removed Industrial Product
Removed 35 ns and 45 ns speed bins
Removed “L” bin
Updated AC Test Loads table
Corrected tR in Data Retention Characteristics from 100 µs to tRC ns
Updated the Ordering Information and replaced the Package Name column
with Package Diagram
*B
467033
See ECN
NXR
Added Industrial Product (Final Information)
Removed 48 ball VFBGA package and its relevant information
Changed the ICC(typ) value of Automotive from 2 mA to 1.8 mA for f = 1MHz
Changed the ISB2(typ) value of Automotive from 5 µA to 1.8 µA
Modified footnote #4 to include current limit
Updated the Ordering Information table
*C
569114
See ECN
VKN
Added 48 ball VFBGA package
Updated Logic Block Diagram
Added footnote #3
Updated the Ordering Information table
*D
925501
See ECN
VKN
Added footnote #9 related to ISB2 and ICCDR
Added footnote #14 related AC timing parameters
*E
1045801
See ECN
VKN
Converted Automotive specs from preliminary to final
Document #: 38-05695 Rev. *E
Page 12 of 12
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