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Part: LC7464M
Category:
Description: Infrared Remote Control Transmitter, Package : Sop
Company: Sanyo Semiconductor Corporation
Datasheet: Download LC7464M datasheet File size : 148 kB
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Datasheet text preview:
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-programmed 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.
Package Dimensions
unit:mm 3045B-MFP24
[LC7464M]
24 13
15.3
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.
0.35 1.27
0.67
0.1
SANYO : MFP24
Pin Assignment
KI2 KI3 KI4 KI5 KI6 KI7 REM VDD TEST 1 2 3 4 5 6 7 8 9 24 23 22 21 20 KI1 KI0 KO0 KO1 KO2 KO3 KO4 KO5 KO6 KO7 GCL GCH
LC7464M
19 18 17 16 15 14 13
OSC1 10 OSC2 11 VSS 12
(Top View)
Any and all SANYO products described or contained herein do not have specifications that can handle a p p l i c a t i o n s that require extremely high levels of reliability, s u c h as life-support systems, a i r c r a f t ' s c o n t r o l systems, o r other applications whose failure can be reasonably expected to result in serious p h y s i c a l and/or material damage. Consult with your SANYO representative nearest you before using a n y 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 p a r a m e t e r s ) 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.35881/7
2.5max
0.15
2.15
0.75
1
12
9.0 10.5
7.9
LC7464M
Block Diagram
Pin Description
Number Name Equivalent circuit Description
1 to 6, 23, 24
KI0 to KI7
Keyswitch scanning inputs
7 8 9 10
REM VDD TEST OSC1
LED driver output Supply voltage Test input. TEST should be tied HIGH or left open for normal operation Ceramic oscillator input connection
11 12 13, 14
OSC2 VSS GCL, GCH
Ceramic oscillator output connection Ground Product code select inputs
15 to 22
KO0 to KO7
Keyswitch scanning outputs
No.35882/7
LC7464M Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Supply voltage Input voltage range Output voltage range Output current Power dissipation Operating temperature range Storage temperature range Symbol VDD max VI VO IO Pd max Topr Tstg Ta85°C Conditions Ratings VSS 0.3 to+5.5
VSS 0.3 to VDD+0.3 VSS 0.3 to VDD+0.3
Unit V V V mA mW °C °C
35 150 40 to +85 50 to +125
Recommended Operating Conditions at Ta = 40 to +85°C
Parameter Supply voltage KI0 to KI7, GCL and GCH high-level input voltage KI0 to KI7, GCL and GCH low-level input voltage Oscillator frequency Symbol VDD VIH VIL fOSC Conditions Ratings min
2.0 0.7VDD
typ 3.0
max 3.6 VDD
0.3VDD
Unit V V V kHz
VSS 433 455
477
Electrical Characteristics at Ta = 40 to +85°C, VDD = 2.0 to 3.6 V
Parameter Operating supply current Standby supply current REM high-level output current KO0 to KO7 high-level output voltage KO0 to KO7 and REM low-level output voltage GCL and GCH high-level input current GCL and GCH low-level input current KI0 to KI7 input floating voltage KI0 to KI7 input pull-down resistance Symbol IDD IDS IOH VOH VOL IIH IIL VIF RIN Conditions Key pressed, no load No key pressed, oscillator stopped VDD=2V, VDD=3V, VOH=VDD 1V VOH=VDD 1V
VDD 0.3
Ratings min typ max 1 1 2.5 11 0.3 1 1
0.1VDD
Unit mA µA mA V V µA µA V k
IOH= 0.1mA IOL=0.1mA VI=VDD VI=VSS
75
100
125
No.35883/7
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