Sanyo LC7464M Specifications
Ordering number:ENN *3588
CMOS IC
LC7464M
Infrared Remote Control Transmitter IC
Preliminary
Overview
The LC7464M is a 64-key infrared remote control transmitter IC that incorporates all key-scanning, oscillator and timing function on-chip, resulting in a very low external component count.
The LC7464M generates 71 function codes using the 64 function keys. The output data format comprises the maskprogrammed custom code, the parity field, the mask-pro- grammed system code, the product code, the function code and the data check code.
The LC7464M operates from a 2.0 to 3.6 V supply and is available in 24-pin MFPs.
Features
•Low external component count.
•64 function keys.
•71 function codes.
•Mask-programmable custom and system codes.
•64 product codes.
•Output conforms to Japan’s Association for Electric Home Appliances recommended standards for infrared remote controls.
•On-chip input pull-down resistors.
•2.0 to 3.6 V supply.
•24-pin MFP.
Package Dimensions
unit:mm |
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3045B-MFP24 |
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[LC7464M] |
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24 |
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13 |
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7.9 |
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9.0 |
10.5 |
1 |
15.3 |
12 |
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0.15 |
0.75 |
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2.15 |
2.5max |
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0.35 |
1.27 |
0.1 |
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0.67 |
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SANYO : MFP24 |
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Pin Assignment
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KI2 |
1 |
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24 |
KI1 |
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KI3 |
2 |
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23 |
KI0 |
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KI4 |
3 |
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22 |
KO0 |
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KI5 |
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KO1 |
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4 |
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21 |
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KI6 |
5 |
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20 |
KO2 |
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KI7 |
6 |
LC7464M |
19 |
KO3 |
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REM |
7 |
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18 |
KO4 |
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KO5 |
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VDD |
8 |
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17 |
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TEST |
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9 |
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16 |
KO6 |
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KO7 |
OSC1 |
10 |
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15 |
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GCL |
OSC2 |
11 |
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14 |
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VSS |
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GCH |
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12 |
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13 |
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(Top View)
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
71901TN (KT)/2132JN No.3588–1/7
LC7464M
Block Diagram
Pin Description
Number |
Name |
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Description |
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1 to 6, 23, 24 |
KI0 to KI7 |
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Keyswitch scanning inputs |
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7 |
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REM |
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LED driver output |
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8 |
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VDD |
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Supply voltage |
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9 |
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Test input. |
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should be tied HIGH or left open for normal operation |
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TEST |
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TEST |
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10 |
OSC1 |
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Ceramic oscillator input connection |
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11 |
OSC2 |
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Ceramic oscillator output connection |
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12 |
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VSS |
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Ground |
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13, 14 |
GCL, GCH |
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Product code select inputs |
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15 to 22 |
KO0 to KO7 |
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Keyswitch scanning outputs |
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No.3588–2/7
LC7464M
Specifications
Absolute Maximum Ratings at Ta = 25˚C
Parameter |
Symbol |
Conditions |
Ratings |
Unit |
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Supply voltage |
VDD max |
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VSS– 0.3 to+5.5 |
V |
Input voltage range |
VI |
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VSS– 0.3 to VDD+0.3 |
V |
Output voltage range |
VO |
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VSS– 0.3 to VDD+0.3 |
V |
Output current |
IO |
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– 35 |
mA |
Power dissipation |
Pd max |
Ta≤85˚C |
150 |
mW |
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Operating temperature range |
Topr |
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– 40 to +85 |
˚C |
Storage temperature range |
Tstg |
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– 50 to +125 |
˚C |
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Recommended Operating Conditions at Ta = –40 to +85˚C
Parameter |
Symbol |
Conditions |
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Ratings |
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Unit |
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min |
typ |
max |
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Supply voltage |
VDD |
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2.0 |
3.0 |
3.6 |
V |
KI0 to KI7, GCL and GCH high-level input |
VIH |
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0.7VDD |
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VDD |
V |
voltage |
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KI0 to KI7, GCL and GCH low-level input |
VIL |
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VSS |
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0.3VDD |
V |
voltage |
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Oscillator frequency |
fOSC |
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433 |
455 |
477 |
kHz |
Electrical Characteristics at Ta = –40 to +85˚C, V = 2.0 to 3.6 V |
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DD |
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Parameter |
Symbol |
Conditions |
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Ratings |
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Unit |
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min |
typ |
max |
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Operating supply current |
IDD |
Key pressed, no load |
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1 |
mA |
Standby supply current |
IDS |
No key pressed, oscillator stopped |
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1 |
µA |
REM high-level output current |
IOH |
VDD=2V, VOH=VDD– 1V |
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– 2.5 |
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mA |
VDD=3V, VOH=VDD– 1V |
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– 11 |
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KO0 to KO7 high-level output voltage |
VOH |
IOH=– 0.1mA |
VDD– 0.3 |
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V |
KO0 to KO7 and REM low-level output voltage |
VOL |
IOL=0.1mA |
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0.3 |
V |
GCL and GCH high-level input current |
IIH |
VI=VDD |
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1 |
µA |
GCL and GCH low-level input current |
IIL |
VI=VSS |
– 1 |
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µA |
KI0 to KI7 input floating voltage |
VIF |
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0.1VDD |
V |
KI0 to KI7 input pull-down resistance |
RIN |
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75 |
100 |
125 |
kΩ |
No.3588–3/7
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