Document
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.
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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]
Features
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Supply voltage range: 2.0 to 3.6V • 3V operation: 2.7 to 3.6V • Battery operation: 2.0 to 2.4V
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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)
unit: mm
3221 - TSOP28
[LC3564RT]
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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
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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)
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
LC3564RM,RT-10LV/12LV/15LV
Pin Functions
Number 1 2 to 10, 21, 23 to 25 27 22 20, 26 11 to 13, 15 to 19 28, 14 Name NC A0 to A12 WE OE CE1, CE2 I/O1 to I/O8 VCC, GND No connection Address inputs Read/write control input Output enable input Chip enable inputs Data input/outputs Supply and ground pins Function
Truth Table
Mode Read cycle Write cycle Output disable No selection X Note: X = H or L L X X High impedance CE1 L L L H CE2 H H H X OE L X H X WE1 H L H X Data output Data input High impedance High impedance I/O Supply current ICCA ICCA ICCA ICCS ICCS
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Maximum supply voltage Input voltage range Input/output voltage range Operating temperature range Storage temperature range Symbol VCC max VIN VI/O Topr Tstg Conditions Ratings 4.6 −0.3 to VCC + 0.3 −0.3 to VCC + 0.3 −40 to +85 −55 to +125 Unit V V V °C °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
Ratings Parameter Input/output pin capacitance Input pin capacitance Note: Measured samples only. Symbol CI/O CI VI/O = 0V VI = 0V Conditions min. typ. 6 6 max. 10 10 pF pF Unit
No. 4484—3/10
LC3564RM,RT-10LV/12LV/15LV
3V Operation
DC Recommended Operating Ranges at Ta = –40 to +85°C, VCC = 2.7 to 3.6V
Ratings Parameter Supply voltage Input voltage * When pulsewidth is less than 30 ns, the minimum value is -2.0V. Symbol min. VCC VIH VIL 2.7 0.8VCC −0.3* typ. 3.0 max. 3.6 VCC + 0.3 0.2VCC V V V Unit
DC Electrical Characteristics at Ta = –40 to +85°C, VCC = 2.7 to 3.6V
Ratings Parameter Input leakage current I/O leakage current Output high level voltage Output low level voltage Symbol ILI ILO VOH VOL Conditions min. VIN = 0V to VCC VCE1 = VIH or VCE2 = VIL or VOE = VIH or VWE = VIL , VI/O = 0V to VCC IOH = −2.0mA IOL = 2.0mA VCE1 ≤ 0.2V, VCE2 ≥ VCC– 0.2V, II/O = 0mA, VIN ≤ 0.2V or VIN ≥ VCC– 0.2V Ta ≤ 70°C Ta ≤ 85°C −1.0 −1.0 VCC − 0.4 typ.* 0.01 Unit max. +1.0 +1.0 0.4 1.0 3.0 µA µA V V µA µA
VCC – 0.2V/0.2V input
ICCA1
Operating supply current CMOS input
ICCA2
VCE1 = VIL, VCE2 = VIH, II/O = 0mA, VIN = VIH or VIL VCE1 = VIL, VCE2 = VIH, II/O = 0mA, duty = 100% min. cycle 200 ns cycle 1 µs cycle
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0.01 -
4 25 15 10 1.0 3.0 1
mA mA mA mA µA µA mA
ICCA3
Standby supply current
VCC − 0.2V/0.2V input
ICCS1
VCE2 ≤ 0.2V or Ta ≤ 70°C {VCE1 ≥ VCC− 0.2V, VCE2 ≥ VCC− 0.2V} Ta ≤ 85°C VCE2 = VIL or VCE1 = VIH, VIN = 0V to VCC
CMOS input * VCC = 3.0V, Ta = 25°C
ICCS2
No. 4484—4/10
LC3564RM,RT-10LV/12LV/15LV
AC Electrical Characteristics at Ta = –40 to +85°C, VCC = 2.7 to 3.6V
AC test conditions Input pulse voltage level: 0.2VCC to 0.8 VCC Input rise and fall times: 5 ns Input/output timing level: VCC/2 Output load: 30 pF (including jig c.