Ordering number: EN 4484B
CMOS LSI
LC3564RM,RT-10LV/12LV/15LV
64K (8192 words × 8 bits) SRAM
Overview
The LC3564RM,RT are 8192-word × 8bit, asynchronous, silicon gate, low-voltage CMOS SRAM LSIs.They operate from a 2.0 to 3.6V supply, making them ideal for handheld, battery-operated equipment.
They are fully CMOS devices employing 2-layer A1 wiring to realize high-speed access, low operating current consumption and very low standby current. They incorporate control signal inputs; OE for high-speed memory
access, and 2 chip enables CE1 and CE2 for power-down and device selection.
They are ideal for systems requiring high speed, low power and battry backup or for easy mamory expansion. The very low standby current means that backup can also be achieved using a capacitor.
Features
■Supply voltage range: 2.0 to 3.6V
•3V operation: 2.7 to 3.6V
•Battery operation: 2.0 to 2.4V
■High-speed access time
•3V operation
-LC3564RM,RT-10LV: 100ns (max)
-LC3564RM,RT-12LV: 120ns (max)
-LC3564RM,RT-15LV: 150ns (max)
•Battery operation
-LC3564RM,RT-10LV: 200ns (max)
-LC3564RM,RT-12LV: 250ns (max)
-LC3564RM,RT-15LV: 300ns (max)
■Very-low standby current
•3V operation
-Ta ≤ 70°C: 1.0µA
-Ta ≤ 85°C: 3.0µA
•Battery operation
-Ta ≤ 70°C: 0.85µA
-Ta ≤ 85°C: 2.5µA
■Operating temperature range: –40 to +85°C
■Data retention supply voltage: 2.0 to 3.6V
■Input/output levels: CMOS Compatible (0.8Vcc/0.2Vcc)
■3 control inputs (OE, CE1, CE2)
■Common-pin input/outputs, 3-state output
■Clock not needed (fully-static RAM)
■Package
•SOP 28-pin (450mil) plastic package: LC3564RM series
•TSOP 28-pin (8 × 13.4mm) plastic package: LC3564RT series
Package Dimensions
unit: mm
3158 - SOP28
[LC3564RM]
unit: mm
3221 - TSOP28
[LC3564RT]
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
60597HA(ID) / 50995TH(ID) / D2293JN No. 4484—1/10
LC3564RM,RT-10LV/12LV/15LV
Pin Assignment
Block Diagram
No. 4484—2/10
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LC3564RM,RT-10LV/12LV/15LV |
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Pin Functions |
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Number |
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Name |
Function |
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1 |
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NC |
No connection |
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2 to 10, 21, 23 to 25 |
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A0 to A12 |
Address inputs |
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27 |
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Read/write control input |
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WE |
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22 |
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Output enable input |
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OE |
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20, |
26 |
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CE2 |
Chip enable inputs |
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CE1, |
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11 to 13, |
15 to 19 |
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I/O1 to I/O8 |
Data input/outputs |
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28, |
14 |
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VCC, GND |
Supply and ground pins |
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Truth Table
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Mode |
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CE1 |
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CE2 |
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OE |
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WE1 |
I/O |
Supply current |
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Read cycle |
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L |
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H |
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L |
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H |
Data output |
ICCA |
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Write cycle |
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L |
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H |
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X |
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L |
Data input |
ICCA |
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Output disable |
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L |
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H |
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H |
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H |
High impedance |
ICCA |
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No selection |
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H |
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X |
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X |
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X |
High impedance |
ICCS |
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X |
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L |
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X |
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X |
High impedance |
ICCS |
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Note: X = H or L |
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Specifications |
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Absolute Maximum Ratings at Ta = 25°C |
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Parameter |
Symbol |
Conditions |
Ratings |
Unit |
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Maximum supply voltage |
VCC max |
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4.6 |
V |
Input voltage range |
VIN |
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−0.3 to VCC + 0.3 |
V |
Input/output voltage range |
VI/O |
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−0.3 to VCC + 0.3 |
V |
Operating temperature range |
Topr |
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−40 to +85 |
°C |
Storage temperature range |
Tstg |
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−55 to +125 |
°C |
Note: Permanent device damage may occur if Absolute Maximum Ratings are exceeded. Functional operation should be restricted to Recommended operating conditions. Exposure to higher than recommended voltages for extended periods of time could affect device reliability.
Inout/Output Capacitance at Ta = 25°C, f = 1 MHz
Parameter |
Symbol |
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Conditions |
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Ratings |
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Unit |
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min. |
typ. |
max. |
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Input/output pin capacitance |
CI/O |
VI/O = 0V |
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6 |
10 |
pF |
Input pin capacitance |
CI |
VI = 0V |
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6 |
10 |
pF |
Note: Measured samples only.
No. 4484—3/10
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