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Part: PDM41027LA-25
Category:
Memory
-> SRAM
-> SRAM
Description: 1 MB Static RAM 1mx1-bit
Company: IXYS Corporation
Datasheet: Download PDM41027LA-25 datasheet File size : 221 kB
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Datasheet text preview:
PDM41027
1 Megabit Static RAM 1M x 1-Bit
Features
n
1 2 3 4 5 6 7
Description
The PDM41027 is a high-performance CMOS static RAM organized as 1,048,576 x 1-bit. T Writing is accomplished when the write enable (WE) and the chip enable (CE) inputs are both LOW. Reading is accomplished when WE remains HIGH and CE goes LOW. The PDM41027 operates from a single +5V power supply and all the inputs and outputs are fully TTLcompatible. The PDM41027 comes in two versions, the standard power version PDM41027SA and a low power version the PDM41027LA. The two versions are functionally the same and only differ in their power consumption. The PDM41027 is available in a 28-pin plastic 400mil plastic SOJ package for surface mount applications.
High speed access times Com'l: 12, 15, 17 and 20 ns Ind'l: 15, 17 and 20 ns Low power operation (typical) - PDM41027SA Active: 400 mW Standby: 150 mW - PDM41027LA Active: 350 mW Standby: 100 mW Single +5V (±10%) power supply TTL-compatible inputs and outputs Packages Plastic SOJ (400 mil) - SO
n
n n n
Functional Block Diagram
A0 · · · · · A19
8
Decoder · · · · · · Memory Matrix
Addresses
9 10
D OUT
····· DIN Column I/O
CE
Control
11 12
1
WE
Rev. 2.2 - 4/24/98
PDM41027 Pin Configuration SOJ
A10 A11 A12 A13 A14 N5 1 AC A16 A17 A18 D 19 WT OU VE ss 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 A Vcc A9 A8 A7 A6 A5 N4 AC A3 A2 A1 D0 CIN E
Pin Description
Name A19-A0 DIN DOUT WE CE NC VCC VSS Description Address Inputs Data Input Data Output Write Enable Input Chip Enable Input No Connect Power (+5V) Ground
Truth Table(1)
WE X H L CE H L L I/O Hi-Z DOUT DIN MODE Standby Read Write
NOTE: 1. H = VIH, L = VIL, X = DON'T CARE
Absolute Maximum Ratings (1)
Symbol VTERM TBIAS TSTG PT IOUT Tj Rating Terminal Voltage with Respect to VSS Temperature Under Bias Storage Temperature Power Dissipation DC Output Current Maximum Junction Temperature (2) Com'l. 0.5 to +7.0 55 to +125 55 to +125 1.0 50 125 Ind. 0.5 to +7.0 65 to +135 65 to +150 1.0 50 145 Unit V °C °C W mA °C
NOTE: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. Appropriate thermal calculations should be performed in all cases and specifically for those where the chosen package has a large thermal resistance (e.g., TSOP). The calculation should be of the form: Tj = Ta + P * ja where Ta is the ambient temperature, P is average operating power and ja the thermal resistance of the package. For this product, use the following ja values: SOJ: 76o C/W TSOP: 100o C/W 2 Rev. 2.2 - 4/24/98
PDM41027 Recommended DC Operating Conditions
Symbol VCC VSS Industrial Commercial Parameter Supply Voltage Supply Voltage Ambient Temperature Ambient Temperature Min. 4.5 0 40 0 Typ. 5.0 0 25 25 Max. 5.5 0 85 70 Unit V V °C °C
1 2 3
DC Electrical Characteristics (VCC = 5.0V ± 10%)
PDM41027SA Symbol ILI ILO VIL VIH VOL VOH Parameter Input Leakage Current Output Leakage Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage IOL = 8 mA, VCC = Min. IOL = 10 mA, VCC = Min. IOH = 4 mA, VCC = Min. Test Conditions VCC = MAX., VIN = VSS to VCC VCC = MAX., CE = VIH, VOUT = VSS to VCC Com'l/ Ind. Com'l/ Ind. Min. 5 5 0.5(1) 2.2 -- -- 2.4 Max. 5 5 0.8 6.0 0.4 0.5 -- PDM41027LA Min. 5 5 0.5(1) 2.2 -- -- 2.4 Max. 5 5 0.8 6.0 0.4 0.5 -- Unit µA µA V V V V V
4 5 6 7 8
NOTE: 1. VIL(min) = 3.0V for pulse width less than 20 ns
Power Supply Characteristics
-12 Symbol Parameter ICC Operating Current CE = VIL f = fMAX = 1/tRC VCC = Max. IOUT = 0 mA ISB Standby Current CE = VIH f = fMAX = 1/tRC VCC = Max. ISB1 Full Standby Current CE VHC f=0 VCC = Max., VIN VCC 0.2V or 0.2V -15 -17 -20 Unit mA mA Power Com'l Ind. Com'l Ind. Com'l Ind. Com'l Ind. SA 230 240 185 195 165 185 155 165 LA 210 220 165 175 155 160 140 150
9 10 11 12
3
SA LA SA LA
70 65 15 10
70 65 25 10
55 50 10 5
55 50 15 10
50 45 10 5
50 50 15 10
45 40 10 5
45 40 15 10
mA mA mA mA
NOTES: All values are maximum guaranteed values. VLC 0.2V, VHC VCC 0.2V Rev. 2.2 - 4/24/98
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