SANYO LC3564RM,RT-15LV, LC3564RM,RT-12LV, LC3564RM,RT-10LV Datasheet
LC3564RM,RT-10LV/12LV/15LV
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
Ordering number: EN 4484B
CMOS LSI
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: 1.0 µ A
-Ta ≤ 85 ° C: 3.0 µ A
• Battery operation
-Ta ≤ 70 ° C: 0.85 µ A
-Ta ≤ 85 ° C: 2.5 µ A
■
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
unit: mm
3221 - TSOP28
[LC3564RM]
[LC3564RT]
LC3564RM,RT-10LV/12LV/15LV
No. 4484—2/10
Pin Assignment
Block Diagram
LC3564RM,RT-10LV/12LV/15LV
No. 4484—3/10
Pin Functions
T ruth T able
Note: X = H or L
Specifications
Absolute Maximum Ratings
at Ta = 25 ° C
Note: Permanent device damage may occur if Absolute Maximum Ratings are exceeded. Functional operation should be restricted to Recommended operating condi-
tions. 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
Note: Measured samples only.
Number Name Function
1 NC No connection
2 to 10, 21, 23 to 25 A0 to A12 Address inputs
27 WE
Read/write control input
22 OE Output enable input
20, 26 CE1, CE2 Chip enable inputs
11 to 13, 15 to 19 I/O1 to I/O8 Data input/outputs
28, 14 V
CC
, GND Supply and ground pins
Mode CE1
CE2 OE WE1 I/O Supply current
Read cycle L H L H Data output I
CCA
Write cycle L H X L Data input I
CCA
Output disable L H H H High impedance I
CCA
No selection
H X X X High impedance I
CCS
X L X X High impedance I
CCS
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
CC max
4.6 V
Input voltage range V
IN
−
0.3 to V
CC
+ 0.3 V
Input/output voltage range V
I/O
−
0.3 to V
CC
+ 0.3 V
Operating temperature range T
opr
−
40 to +85
°
C
Storage temperature range T
stg
−
55 to +125
° C
Parameter Symbol Conditions
Ratings
Unit
min. typ. max.
Input/output pin capacitance C
I/O
V
I/O
= 0V - 6 10 pF
Input pin capacitance C
I
V
I
= 0V - 6 10 pF
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