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CY7C192
64K x 4 Static RAM with Separate I/O
Features
* High speed -- 12 ns * CMOS for optimum speed/power * Low active power -- 880 mW * Low standby power -- 220 mW * TTL-compatible inputs and outputs * Automatic power-down when deselected pansion is provided by active LOW Chip Enable (CE) and three-state drivers. It has an automatic power-down feature, reducing the power consumption by 75% when deselected. Writing to the device is accomplished when the Chip Enable (CE) and write enable (WE) inputs are both LOW. Data on the four input pins (I0 through I3) is written into the memory location specified on the address pins (A0 through A15). Reading the device is accomplished by taking the Chip Enable (CE) LOW while the Write Enable (WE) remains HIGH. Under these conditions the contents of the memory location specified on the address pins will appear on the four data output pins. The output pins stay in high-impedance state when Write Enable (WE) is LOW, or Chip Enable (CE) is HIGH. A die coat is used to insure alpha immunity.
Functional Description
The CY7C192 is a high-performance CMOS static RAM organized as 65,536 x 4 bits with separate I/O. Easy memory ex-
Logic Block Diagram
I0 I1 I2 I3
INPUT BUFFER
Pin Configurations
DIP/SOJ Top View
A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 I0 I1 CE GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VCC A5 A4 A3 A2 A1 A0 I3 I2 O3 O2 O1 O0 WE C191-2 A9 A10 A11 A12 A13 A14 A15 I0 I1
LCC Top View
A8 A7 A6 V CC A5 3 2 1 28 27 4 26 5 25 6 24 7 23 8 22 9 21 10 20 11 19 12 18 1314151617 CE GND WE O0 O1 A4 A3 A2 A1 A0 I3 I2 O3 O2 C191-3
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9
ROW DECODER
O0
SENSE AMPS 1024 x 64 x 4 ARRAY
O1 O2 O3
COLUMN DECODER
POWER DOWN
A10 A11 A12 A13 A14
A15
CE
7C192 ONLY
WE
C191-1
Selection Guide
Maximum Access Time (ns) Maximum Operating Current (mA) Maximum Standby Current (mA) 7C192-12 12 155 30 7C192-15 15 145 30 7C192-20 20 135 30 7C192-25 25 115 30
Cypress Semiconductor Corporation Document #: 38-05047 Rev. **
*
3901 North First Street
*
San Jose
*
CA 95134 * 408-943-2600 Revised August 24, 2001
CY7C192
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ..................................... -65C to +150C Ambient Temperature with Power Applied.................................................. -55C to +125C Supply Voltage to Ground Potential (Pin 28 to Pin 14).................................................-0.5V to +7.0V 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 Output 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 Ambient Temperature[2] 0C to +70C VCC 5V 10%
Electrical Characteristics Over the Operating Range
7C192-12 Parameter VOH VOL VIH VIL IIX IOZ IOS ICC ISB1 Description Output HIGH Voltage Output LOW Voltage Input HIGH Voltage Input LOW Voltage Input Load Current Output Leakage Current Output Short Circuit Current[3] VCC Operating Supply Current Automatic CE PowerDown Current-- TTL Inputs Automatic CE PowerDown Current--CMOS Inputs
[1]
7C192-15 Min. 2.4 Max. 0.4 2.2 -0.5 -5 -5 VCC +0.3V 0.8 +5 +5 -300 145 30 Unit V V V V A A mA mA mA
Test Conditions VCC = Min., IOH = -4.0 mA VCC = Min., IOL = 8.0 mA
Min. 2.4
Max. 0.4
2.2 -0.5 GND < VI < VCC GND < VO < VCC, Output Disabled VCC = Max., VOUT = GND VCC = Max., IOUT = 0 mA, f = fMAX = 1/tRC Max. VCC, CE > VIH, VIN > VIH or VIN < VIL, f = fMAX Max. VCC, CE > VCC - 0.3V, VIN > VCC - 0.3V or VIN < 0.3V, f=0 -5 -5
VCC +0.3V 0.8 +5 +5 -300 155 30
ISB2
10
10
mA
Notes: 1. Minimum voltage is equal to - 2.0V for pulse durations of less than 20 ns. 2. TA is the case temperature. 3. Not more than 1 output should be shorted at one time. Duration of the short circuit should not exceed 30 seconds.
Document #: 38-05047 Rev. **
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CY7C192
Electrical Characteristics Over the Operating Range
7C192-20 Parameter VOH VOL VIH VIL IIX IOZ IOS ICC ISB1 ISB2 Description Output HIGH Voltage Output LOW Voltage Input HIGH Voltage Input LOW Voltage[1] Input Load Current Output Leakage Current Output Short Circuit Current[3] VCC Operating Supply Current Automatic CE Power-Down Current--TTL Inputs Automatic CE Power-Down Current--CMOS Inputs GND < VI < VCC GND < VO < VCC, Output Disabled VCC = Max., VOUT = GND VCC = Max., IOUT = 0 mA, f = fMAX = 1/tRC Max. VCC, CE > VIH, VIN > VIH or VIN < VIL, f = fMAX CE > VCC - 0.3V, VIN VCC - 0.3V or VIN < 0.3V, f = 0 Test Conditions VCC = Min., IOH = -4.0 mA VCC = Min., IOL = 8.0 mA 2.2 -0.5 -5 -5 Min. 2.4 0.4 VCC +0.3V 0.8 +5 +5 -300 135 30 15 2.2 -3.0 -5 -5 Max. 7C192-25 Min. 2.4 0.4 VCC +0.3V 0.8 +5 +5 -300 115 30 15 Max. Unit V V V V A A mA mA mA mA
Capacitance[4]
Parameter CIN COUT Description Input Capacitance Output Capacitance Test Conditions TA = 25C, f = 1 MHz, VCC = 5.0V Max. 8 10 Unit pF pF
AC Test Loads and Waveforms[5]
5V OUTPUT 30 pF INCLUDING JIG AND SCOPE Equivalent to: R2 255 R1 481 5V OUTPUT 5 pF INCLUDING JIG AND SCOPE R2 255 R1 481 ALL INPUT PULSES 3.0V GND 10% < tr 90% 90% 10% < tr
C191-5
(a)
(b)
C191-4
THEVENIN EQUIVALENT 167 OUTPUT 1.73V
Notes: 4. Tested initially and after any design or process changes that may affect these parameters. 5. tr = < 3 ns for the -12 and -15 speeds. T.r = < 5 ns for the -20 and slower speeds.
Document #: 38-05047 Rev. **
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CY7C192
Switching Characteristics Over the Operating Range[6]
7C192-12 Parameter READ CYCLE tRC tAA tOHA tACE tLZCE tHZCE tPU tPD Read Cycle Time Address to Data Valid Output Hold from Address Change CE LOW to Data Valid CE LOW to Low Z[7] CE HIGH to High Z[7,8] CE LOW to Power-Up CE HIGH to Power-Down Write Cycle Time CE LOW to Write End Address Set-Up to Write End Address Hold from Write End Address Set-Up to Write Start WE Pulse Width Data Set-Up to Write End Data Hold from Write End WE HIGH to Low Z (7C192)[7] WE LOW to High Z (7C192)[7,8] WE LOW to Data Valid (7C191) Data Valid to Output Valid (7C191) CE LOW to Data Valid (7C191) 12 9 9 0 0 8 8 0 3 7 12 12 12 0 12 3 5 0 15 3 12 3 7 0 20 12 12 3 15 3 9 0 25 15 15 3 20 3 11 20 20 3 25 25 25 ns ns ns ns ns ns ns ns Description Min. Max. 7C192-15 Min. Max. 7C192-20 Min. Max. 7C192-25 Min. Max. Unit
WRITE CYCLE[9] tWC tSCE tAW tHA tSA tPWE tSD tHD tLZWE tHZWE tDWE tADV tDCE 15 10 10 0 0 9 9 0 3 7 15 15 15 20 15 15 0 0 15 10 0 3 10 20 20 20 25 18 20 0 0 18 10 0 3 11 25 20 25 ns ns ns ns ns ns ns ns ns ns ns ns ns
Notes: 6. Test conditions assume signal transition time of 3 ns or less for -12 and -15 speeds and 5 ns or less for -20 through -25 speeds, 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. 7. At any given temperature and voltage condition, tHZCE is less than tLZCE, tHZWE is less than tLZWE for any given device. These parameters are guaranteed by design and not 100% tested. 8. tHZCE and tHZWE are specified with CL = 5 pF as in part (b) of AC Test Loads. Transition is measured 500 mV from steady-state voltage. 9. The internal write time of the memory is defined by the overlap of CE LOW and WE LOW. Both signals must be LOW to initiate a write and either signal can terminate a write by going HIGH. The data input set-up and hold timing should be referenced to the rising edge of the signal that terminates the write.
Document #: 38-05047 Rev. **
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CY7C192
Switching Waveforms
Read Cycle No. 1[10, 11]
tRC ADDRESS tOHA DATA OUT PREVIOUS DATA VALID tAA DATA VALID
C191-6
Read Cycle No. 2[10, 12]
CE tRC
tACE HIGH IMPEDANCE tLZCE VCC SUPPLY CURRENT tPU 50%
tHZCE DATA VALID tPD
HIGH IMPEDANCE
DATA OUT
ICC 50% ISB
C191-7
Write Cycle No. 1 (WE Controlled)[9]
tWC ADDRESS tSCE CE tSA WE tSD DATA IN DATA VALID tHZWE DATA OUT DATA UNDEFINED tLZWE HIGH IMPEDANCE tHD tAW tPWE tHA
C191-8
Notes: 10. WE is HIGH for read cycle. 11. Device is continuously selected, CE = VIL. 12. Address valid prior to or coincident with CE transition LOW.
Document #: 38-05047 Rev. **
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CY7C192
Switching Waveforms (continued)
Write Cycle No. 2 (CE Controlled)[9, 13]
tWC ADDRESS tSA CE tAW tPWE WE tSD DATA IN tHZWE DATA OUT (7C192) HIGH IMPEDANCE DATA VALID tHD tHA tSCE
C191-9
Notes: 13. If CE goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
Document #: 38-05047 Rev. **
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CY7C192
Typical DC and AC Characteristics
OUTPUT SOURCE CURRENT (mA) NORMALIZED SUPPLY CURRENT vs. SUPPLY VOLTAGE 1.4
SB
NORMALIZED SUPPLY CURRENT vs. AMBIENT TEMPERATURE 1.4
SB
OUTPUT SOURCE CURRENT vs. OUTPUT VOLTAGE 120 100 80 60 40 20 0 0.0 1.0 2.0 3.0 4.0 VCC =5.0V TA =25C
1.2 1.0 0.8 0.6 0.4 0.2 0.0 4.0 ISB 4.5 5.0 5.5 6.0 VIN =5.0V TA =25C ICC
ICC
1.2 1.0 0.8 0.6 0.4 0.2 0.0 -55 ISB 25 125 VCC =5.0V VIN =5.0V
NORMALIZED I, I CC
NORMALIZED I, I CC
SUPPLY VOLTAGE (V) NORMALIZED ACCESS TIME vs. SUPPLY VOLTAGE 1.4 NORMALIZED tAA NORMALIZED tAA 1.3 1.2 1.1 TA =25C 1.0 0.9 0.8 4.0 4.5 5.0 5.5 6.0 1.6 1.4 1.2 1.0
AMBIENT TEMPERATURE(C) NORMALIZED ACCESS TIME vs. AMBIENT TEMPERATURE
OUTPUT VOLTAGE (V) OUTPUT SINK CURRENT vs. OUTPUT VOLTAGE 140 120 100 80 60 40 20 0 0.0 1.0 2.0 3.0 4.0 VCC =5.0V TA =25C
VCC =5.0V 0.8 0.6 -55
25
125
OUTPUT SINK CURRENT (mA)
SUPPLY VOLTAGE (V) TYPICAL POWER-ON CURRENT vs. SUPPLY VOLTAGE 3.0 DELTA t AA (ns) NORMALIZED IPO 2.5 2.0 1.5 1.0 0.5 0.0 0.0 1.0 2.0 3.0 4.0 5.0 30.0
AMBIENT TEMPERATURE (C) TYPICAL ACCESS TIME CHANGE vs. OUTPUT LOADING 1.25 NORMALIZED ICC
OUTPUT VOLTAGE (V) NORMALIZED I CC vs. CYCLE TIME
25.0 20.0 15.0 10.0 5.0 0.0 0 200 400 600 800 1000 VCC =4.5V TA =25C
1.00
VCC =5.0V TA =25C VIN =0.5V
0.75
0.50 10
20
30
40
SUPPLY VOLTAGE (V)
CAPACITANCE (pF)
CYCLE FREQUENCY (MHz)
Document #: 38-05047 Rev. **
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CY7C192
Ordering Information
Speed (ns) 12 15 20 25 Ordering Code CY7C192-12PC CY7C192-12VC CY7C192-15PC CY7C192-15VC CY7C192-20PC CY7C192-20VC CY7C192-25PC CY7C192-25VC Package Name P21 V21 P21 V21 P21 V21 P21 V21 Package Type 28-Lead (300-Mil) Molded DIP 28-Lead Molded SOJ 28-Lead (300-Mil) Molded DIP 28-Lead Molded SOJ 28-Lead (300-Mil) Molded DIP 28-Lead Molded SOJ 28-Lead (300-Mil) Molded DIP 28-Lead Molded SOJ Commercial Commercial Commercial Operating Range Commercial
Document #: 38-05047 Rev. **
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CY7C192
Package Diagrams
28-Lead (300-Mil) Molded DIP P21
51-85014-B
28-Lead (300-Mil) Molded SOJ V21
51-85031-B
Document #: 38-05047 Rev. **
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(c) 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.
CY7C192
Document Title: CY7C192 64K x 4 Static RAM with Separate I/O Document Number: 38-05047 REV. ** ECN NO. 107149 Issue Date 09/10/01 Orig. of Change SZV Description of Change Change Spec number from: 38-00076 to 38-05047
Document #: 38-05047 Rev. **
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