Cypress CY7C199C-12VI 32k x 8 static ram Datasheet

CY7C199C
32K x 8 Static RAM
General Description1
Features
• Fast access time: 12 ns, 15 ns, 20 ns, and 25 ns
• Wide voltage range: 5.0V ± 10% (4.5V to 5.5V)
• CMOS for optimum speed/power
• TTL–compatible Inputs and Outputs
• Available in 28 DIP, 28 SOJ, and 28 TSOP I.
• 2.0V Data Retention
The CY7C199C is a high–performance CMOS Asynchronous
SRAM organized as 32K by 8 bits that supports an
asynchronous memory interface. The device features an
automatic power–down feature that significantly reduces
power consumption when deselected.
See the Truth Table in this datasheet for a complete
description of read and write modes.
The CY7C199C is available in 28 DIP, 28 SOJ, and 28 TSOP
I package(s).
• Low CMOS standby power
• Automated Power–down when deselected
Logic Block Diagram
RAM Array
Sense Amps
Row Decoder
Input Buffer
I/Ox
CE
Column Decoder
WE
Power
Down
Circuit
OE
A
X
X
Product Portfolio
Maximum Access Time
12 ns
15 ns
20 ns
25 ns
Unit
12
15
20
25
ns
Maximum Operating Current
85
80
75
75
mA
Maximum CMOS Standby Current
(low power)
500
500
500
500
uA
Notes:
1. For best–practices recommendations, please refer to the Cypress application note System Design Guidelines on www.cypress.com.
Cypress Semiconductor Corporation
Document #: 38-05408 Rev. *A
•
3901 North First Street
•
San Jose, CA 95134
•
408-943-2600
Revised September 11, 2003
CY7C199C
Pin Layout and Specifications
28 DIP (6.9 x 35.6 x 3.5 mm) – P21
OE
A1
A2
A3
A4
WE
VCC
A5
A6
A7
A8
A9
A10
A11
Document #: 38-05408 Rev. *A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A5
1
28
A6
2
27
VCC
WE
A7
3
26
A4
A8
4
25
A3
A9
5
24
A2
A10
6
23
A1
A11
7
22
OE
A12
8
21
A0
A13
9
20
CE
A14
10
19
I/O7
I/O0
11
18
I/O6
I/O1
12
17
I/O5
I/O2
13
16
I/O4
VSS
14
15
I/O3
28 TSOP I (8 x 13.4 x 1.2 mm) – Z28
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A0
CE
I/O7
I/O6
I/O5
I/O4
I/O3
VSS
I/O2
I/O1
I/O0
A14
A13
A12
Page 2 of 12
CY7C199C
Pin Layout and Specifications (continued)
28 SOJ (8 x 18 x 3.5 mm) – V21
A5
1
28
A6
2
27
VCC
WE
A7
3
26
A4
A8
4
25
A3
A9
5
24
A2
A10
6
23
A1
A11
7
22
OE
A12
8
21
A0
A13
9
20
CE
A14
10
19
I/O7
I/O0
11
18
I/O6
I/O1
12
17
I/O5
I/O2
13
16
I/O4
VSS
14
15
I/O3
Pin Description
Pin
Type
Description
DIP
SOJ
TSOP I
1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 21, 23,
24, 25, 26
1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 21, 23,
24, 25, 26
2, 3, 4, 5, 8, 9,
10, 11, 12, 13,
14, 15, 16, 17,
28
20
20
27
11, 12, 13, 15,
16, 17, 18, 19
11, 12, 13, 15,
16, 17, 18, 19
18, 19, 20, 22,
23, 24, 25, 26
Output Enable.
22
22
1
Power (5.0V).
28
28
7
Supply
Ground.
14
14
21
Control
Write Enable.
27
27
6
AX
Input
Address Inputs.
CE
Control
Chip Enable.
I/OX
Input or
Output
Data Input/Outputs.
OE
Control
VCC
Supply
VSS
WE
Truth Table
CE
OE
WE
I/Ox
Mode
Power
H
X
X
High Z
Deselect / Power-Down
Standby (ISB)
L
L
H
Data Out
Read
Active (ICC )
L
X
L
Data In
Write
Active (ICC )
L
H
H
High Z
Selected, outputs disabled
Active (ICC )
Document #: 38-05408 Rev. *A
Page 3 of 12
CY7C199C
Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.)
Parameter
Description
Value
Unit
TSTG
Storage Temperature
–65 to +150
°C
TAMB
Ambient Temperature with Power Applied (i.e. case temperature)
–55 to +125
°C
VCC
Core Supply Voltage Relative to VSS
–0.5 to +7.0
V
VIN, VOUT
DC Voltage Applied to any Pin Relative to VSS
–0.5 to VCC + 0.5
IOUT
Output Short–Circuit Current
20
VESD
Static Discharge Voltage (per MIL–STD–883, Method 3015)
> 2001
V
ILU
Latch–up Current
> 200
mA
V
mA
Operating Range
Range
Ambient Temperature (TA)
Voltage Range (VCC)
0°C to 70°C
5.0V ± 10%
–40°C to 85°C
5.0V ± 10%
Commercial
Industrial
DC Electrical Characteristics Over the Operating Range (–12, –15)2
12 ns
Parameter
Power
Min.
Max.
Min.
Max.
Unit
VIH
Input HIGH Voltage
–
2.2
VCC
+ 0.3
2.2
VCC
+ 0.3
V
VIL
Input LOW Voltage
–
–0.5
0.8
–0.5
0.8
V
VOH
Output HIGH Voltage
VCC = Min., IOH = –4.0 mA
–
2.4
–
2.4
–
V
VOL
Output LOW Voltage
VCC = Min., IOL = 8.0 mA
–
–
0.4
–
0.4
V
ICC
VCC Operating
Supply Current
VCC = Max., IOUT = 0 mA, f = FMAX =
1/tRC
–
–
85
–
80
mA
ISB1
Automatic CE
Power–down
Current TTL Inputs
Max. VCC, CE ≥ VIH, VIN ≥ VIH or VIN
≤ VIL, f = FMAX
–
–
30
–
30
mA
L
–
10
–
10
mA
Automatic CE
Power–down
Current CMOS
Inputs
Max. VCC, CE ≥ VCC – 0.3V, VIN ≥
VCC – 0.3V, or VIN ≤ 0.3V, f = 0
–
–
10
–
10
mA
L
–
500
–
500
uA
IOZ
Output Leakage
Current
GND ≤ Vi ≤ VCC, Output Disabled
–
–5
+5
–5
+5
uA
IIX
Input Load Current
GND ≤ Vi ≤ VCC
–
–5
+5
–5
+5
uA
ISB2
Description
Condition
15 ns
DC Electrical Characteristics Over the Operating Range (–20, –25)3
20 ns
Parameter
Description
Condition
25 ns
Power
Min
Max
Min
Max
Unit
VIH
Input HIGH Voltage
–
2.2
VCC
+
0.3
2.2
VCC
+
0.3
V
VIL
Input LOW Voltage
–
–0.5
0.8
–0.5
0.8
V
VOH
Output HIGH Voltage
VCC = Min., IOH = –4.0 mA
–
2.4
–
2.4
–
V
VOL
Output LOW Voltage
VCC = Min., IOL = 8.0 mA
–
–
0.4
–
0.4
V
Notes:
2. VIL (min) = –2.0V for pulse durations of less than 20 ns.
3.VIL (min) = –2.0V for pulse durations of less than 20 ns.
Document #: 38-05408 Rev. *A
Page 4 of 12
CY7C199C
20 ns
Parameter
Description
25 ns
Condition
Power
Min
Max
Min
Max
Unit
ICC
VCC Operating
Supply Current
VCC = Max., IOUT = 0 mA, f = FMAX =
1/tRC
–
–
75
–
75
mA
ISB1
Automatic CE
Power–down
Current TTL Inputs
Max. VCC, CE ≥ VIH, VIN ≥ VIH or VIN
≤ VIL, f = FMAX
–
–
30
–
30
mA
L
–
10
–
10
mA
Automatic CE
Power–down
Current CMOS
Inputs
Max. VCC, CE ≥ VCC – 0.3V, VIN ≥
VCC – 0.3V, or VIN ≤ 0.3V, f = 0
–
–
10
–
10
mA
L
–
500
–
500
uA
IOZ
Output Leakage
Current
GND ≤ Vi ≤ VCC, Output Disabled
–
–5
+5
–5
+5
uA
IIX
Input Load Current
GND ≤ Vi ≤ VCC
–
–5
+5
–5
+5
uA
ISB2
Capacitance4
Max
Parameter
Description
CIN
Input Capacitance
COUT
Output Capacitance
Conditions
ALL – PACKAGES
Unit
TA = 25C, f = 1 MHz,
VCC = 5.0V
8
pF
8
AC Test Loads
Output Loads
Output Loads
for tHZOE, tHZCE & tHZWE
R1
R3
VCC
VCC
Output
C1
R2
C2
(A)*
(B)*
All Input Pulses
Thevenin Equivalent
Output
Rth
R4
VCC
90%
90%
VT
VSS
10%
10%
Rise Time
1 V/ns
Fall Time
1 V/ns
* including scope and jig capacitance
Notes:
4. Tested initially and after any design or process change that may affect these parameters.
Document #: 38-05408 Rev. *A
Page 5 of 12
CY7C199C
AC Test Conditions
Parameter
Description
Nom.
Unit
30
pF
C1
Capacitor 1
C2
Capacitor 2
5
R1
Resistor 1
480
R2
Resistor 2
255
R3
Resistor 3
480
R4
Resistor 4
255
RTH
Resistor Thevenin
167
VTH
Voltage Thevenin
1.73
Ω
V
Thermal Resistance5
Parameter
Description
Conditions
TSOP I
SOJ
DIP
Unit
ΘJA
Thermal Resistance
(Junction to
Ambient)
88.6
79
TBD
°C/W
ΘJC
Thermal Resistance
(Junction to Case)
Still Air, soldered on a
3 × 4.5 square inch,
two–layer printed
circuit board
21.94
41.42
TBD
AC Electrical Characteristics6 7 8
12 ns
Parameter
Description
15 ns
20 ns
25 ns
Min
Max
Min
Max
Min
Max
Min
Max
Unit
tRC
Read Cycle Time
12
–
15
–
20
–
25
–
ns
tAA
Address to Data Valid
–
12
–
15
–
20
–
25
ns
tOHA
Data Hold from Address
Change
3
–
3
–
3
–
3
–
ns
tACE
CE to Data Valid
–
12
–
15
–
20
–
25
ns
tDOE
OE to Data Valid
–
5
–
7
–
9
–
9
ns
tLZOE
OE to Low Z
0
–
0
–
0
–
0
–
ns
tHZOE
OE to High Z
–
5
–
7
–
9
–
9
ns
tLZCE
CE to Low Z
3
–
3
–
3
–
3
–
ns
tHZCE
CE to High Z
–
5
–
7
–
9
–
9
ns
tPU
CE to Power–Up
0
–
0
–
0
–
0
–
ns
tPD
CE to Power–Down
–
12
–
15
–
20
–
20
ns
tWC
Write Cycle Time
12
–
15
–
20
–
25
–
ns
tSCE
CE to Write End
9
–
10
–
15
–
15
–
ns
tAW
Address Set–Up to Write
End
9
–
10
–
15
–
15
–
ns
tHA
Address Hold from Write
End
0
–
0
–
0
–
0
–
ns
Notes:
5. Test Conditions assume a transition time of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V.
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 and WE LOW. CE and WE must be LOW to initiate a
write, and the transition of any 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. tHZOE, tHZCE, tHZWE are specified as in part (b) of the A/C Test
Loads. Transitions are measured ± 200 mV from steady state voltage.
Document #: 38-05408 Rev. *A
Page 6 of 12
CY7C199C
12 ns
Parameter
Description
15 ns
20 ns
25 ns
Min
Max
Min
Max
Min
Max
Min
Max
Unit
tSA
Address Set–Up to Write
Start
0
–
0
–
0
–
0
–
ns
tPWE
WE Pulse Width
8
–
9
–
15
–
15
–
ns
tSD
Data Set–Up to Write End
8
–
9
–
10
–
10
–
ns
tHD
Data Hold from Write End
0
–
0
–
0
–
0
–
ns
tHZWE
WE LOW to High Z
–
7
–
7
–
10
–
10
ns
tLZWE
WE HIGH to Low Z
3
–
3
–
3
–
3
–
ns
Data Retention Characteristics9
ALL
Parameter
Description
VDR
VCC for Data Retention
ICCDR
Data Retention Current
tCDR
Chip Deselect to Data
Retention Time
tR
Operation Recovery Time
Condition
VCC = VDR=2.0V, CE ≥ VCC – 0.3V, VIN ≥
VCC – 0.3V or VIN ≤ 0.3V
Min
Max
Unit
2.0
–
V
–
150
uA
0
–
ns
200
–
us
Timing Waveforms
Data Retention Waveform
VCC
DATA RETENTION MODE
tCDR
tR
CE
Read Cycle No. 1 10 11
tRC
Address
tAA
tOHA
Data Out
Previous Data Valid
Data Valid
Notes:
9. L–version only.
10. Device is continuously selected. OE = VIL = CE.
11. WE is HIGH for Read Cycle.
Document #: 38-05408 Rev. *A
Page 7 of 12
CY7C199C
Read Cycle No. 2 12 13
tRC
Address
CE
tHZCE
tACE
OE
tDOE
tHZOE
tLZOE
High Z
High Z
Data Out
VCC
Current
Data Valid
tLZCE
tPU
ICC
tPD
50%
ISB
50%
Write Cycle No. 1 (WE Controlled)14 15 16
tWC
Address
tSCE
CE
tAW
tSA
tHA
tPWE
WE
OE
tHD
tHZOE
Data In/Out
Undefined
see footnotes
tSD
Data-In Valid
Notes:
12. This cycle is OE Controlled and WE is HIGH read cycle.
13. Address valid prior to or coincident with CE transition LOW.
14. This cycle is WE controlled, OE is HIGH during write.
15. Data In/Out is high impedance if OE = VIH.
16. During this period the I/Os are in output state and input signals
should not be applied.
Document #: 38-05408 Rev. *A
Page 8 of 12
CY7C199C
Write Cycle No. 2 (CE Controlled)17 18 19
tWC
Address
tSCE
CE
tSA
tHA
tAW
WE
tSD
Data In/Out
High Z
tHD
High Z
Data-In Valid
Write Cycle No. 3 (WE Controlled, OE Low)20
t WC
Address
tSCE
CE
tAW
tHA
tPWE
tSA
WE
tSD
Data
In/Out
Undefined
tHD
Undefined
See Footnotes
Data-In Valid
see footnotes
tHZWE
tLZWE
Notes:
17. This cycle is CE controlled.
18. Data In/Out is high impedance if OE = VIH.
19. If CE goes HIGH simultaneously with WE going HIGH, the output remains in a high–impedance state.
20. The cycle is WE controlled, OE low. The minimum write cycle time is the sum of tHZWE and tSD.
Document #: 38-05408 Rev. *A
Page 9 of 12
CY7C199C
Ordering Information
Speed
Ordering Code
Package
Name
Package Type
Power
Option
Operating
Range
12 ns
CY7C199C–12VC
V21
28 SOJ (8 x 18 x 3.5 mm)
Standard
Commercial
12 ns
CY7C199C–12ZC
Z28
28 TSOP I (8 x 13.4 x 1.2 mm)
Standard
Commercial
12 ns
CY7C199C–12VI
V21
28 SOJ (8 x 18 x 3.5 mm)
Standard
Industrial
15 ns
CY7C199C–15PC
P21
28 DIP (6.9 x 35.6 x 3.5 mm)
Standard
Commercial
15 ns
CY7C199C–15VC
V21
28 SOJ (8 x 18 x 3.5 mm)
Standard
Commercial
15 ns
CY7C199C–15ZC
Z28
28 TSOP I (8 x 13.4 x 1.2 mm)
Standard
Commercial
15 ns
CY7C199C–15VI
V21
28 SOJ (8 x 18 x 3.5 mm)
Standard
Industrial
15 ns
CY7C199CL–15VC
V21
28 SOJ (8 x 18 x 3.5 mm)
Low Power
Commercial
15 ns
CY7C199CL–15ZC
Z28
28 TSOP I (8 x 13.4 x 1.2 mm)
Low Power
Commercial
15 ns
CY7C199CL–15VI
V21
28 SOJ (8 x 18 x 3.5 mm)
Low Power
Industrial
20 ns
CY7C199C–20VC
V21
28 SOJ (8 x 18 x 3.5 mm)
Standard
Commercial
20 ns
CY7C199C–20ZI
Z28
28 TSOP I (8 x 13.4 x 1.2 mm)
Standard
Industrial
25 ns
CY7C199C–25PC
P21
28 DIP (6.9 x 35.6 x 3.5 mm)
Standard
Commercial
Package Diagram
28 TSOP I (8 × 13.4 × 1.2 mm) – Z28
51-85071-*G
Document #: 38-05408 Rev. *A
Page 10 of 12
CY7C199C
Package Diagram (continued)
28 SOJ (8 × 18 × 3.5 mm) – V21
51-85031-*B
28ÐLead(300ÐMil)Molded DIP P21
51Ð85014Ð*B
All product and company names mentioned in this document may be the trademarks of their respective holders.
Document #: 38-05408 Rev. *A
Page 11 of 12
© Cypress Semiconductor Corporation, 2003. 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.
CY7C199C
Document History Page
Document Title: CY7C199C 32K x 8 Static RAM
Document Number: 38-05408
REV.
ECN No.
Issue
Date
Orig. of
Change
**
129233
09/11/03
HGK
New Data Sheet
*A
129697
09/15/03
KKV
Minor change:
Move Product Portfolio from page 4 to page 1
Move Truthtable from page 9 to page 3
Document #: 38-05408 Rev. *A
Description of Change
Page 12 of 12
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