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Part: LC7461
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Description:
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Datasheet: Download LC7461 datasheet File size : 152 kB
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Datasheet text preview:
Ordering number: EN2119D
CMOS LSI
LC7461M Infrared Remote Control Transmitter IC
Functions
Package Dimensions
unit : mm
. 32%3 function keys . 13-bit custom codes . Operating supply voltage range V = 1.8 to 3.6 V . Supply current at the standby mode I = 1 µA or less . Double-press operation keys (no priority given) . On-chip oscillator (ceramic resonator : connected externally)
DD DD
3045B-MFP24
[LC7461M]
Features
. The custom code consists of 7 bits to be fixed by the .
on-chip ROM and 6 bits being pin-settable. Sixty-four custom codes may be selected externally (no diode required). Minimum number of external parts required SANYO : MFP24
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Maximum supply voltage Input voltage Output voltage Output current Allowable power dissipation Operating temperature Storage temperature Symbol VDD max VIN VOUT IOUT Pd max Topr Tstg VDD Each input pin Each output pin OUT Ta % 85°C Conditions Ratings VSS0.3 to +5.5 VSS0.3 to VDD+0.3 VSS0.3 to VDD+0.3 35 150 40 to +85 50 to +125 Unit V V V mA mW °C °C
Allowable Operating Conditions at Ta = 25°C
Parameter Supply voltage Input high-level voltage Input low-level voltage Oscillation frequency Symbol VDD VIH VIL fOSC Pin Name VDD KI0 to KI3, C0 to C5 KI0 to KI3, C0 to C5 Conditions fOSC = 455 kHz min 1.8 0.7 VDD VSS 400 455 typ 3.0 max 3.6 VDD 0.3VDD 500 Unit V V V kHz
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
O3096HA(II)/7058YT/6036KI,TS(KOTO) No.2119-1/7
LC7461M
Electrical Characteristics at Ta = 25°C, VDD = 3.0 V
Parameter Operating supply current Quiescent supply current Output high-level current Output high-level voltage Output low-level voltage Output OFF-state leakage current Input high-level current Input low-level current Input floating voltage Input pull down resistance Symbol IDD IDS IOH1 IOH2 VOH VOL IOFF IIH IIL VIF RIN Pin Name VDD VDD OUT OUT KO0 to KO7 OUT KO0 to KO7 C0 to C5 C0 to C5 KI0 to KI3 KI0 to KI3 VIN = VDD VIN = VSS 1 0.1 VDD 75 100 125 Conditions Key ON, output: no load All keys OFF, OSC stop VDD = 1.8 V, VDD = 3.0 V, VOH = 1.0 V VOH = 1.0 V 8 25 0.3 0.3 1 1 min typ max 1 1 Unit mA µA mA mA V V µA µA µA V k
IOH = 0.1 mA IOL = 0.1 mA
Internal Block Diagram
Key output timing signal generator
Output circuit
Oscillator
Divider
Decoder
Key entry circuit
Key data register
Custom code register
No.2119-2/7
LC7461M
Pin Assignment
Top view
Pin Description
Pin Name VDD, VSS KO0 to KO7 Pin No. 8, 12 13 to 20 Output Input/Output Internal Equivalent Circuit Pin Function Power supply pins VSS = GND Key scan timing signal output pins
KI0 to KI3
1 to 4
Input
Keys return signal entry pins Input/output pins for ceramic resonator-used oscillation
OSC1 OSC2
10 11
Input/output
Oscillator configuration C0 to C5 21 to 24, 5, 6 Input Input pins for custom code setting Capable of externally setting 6 bits of 13 bits in all that provide a custom code
OUT
7
Output
Output pin for transmit LED drive
TEST
9
Input
LSI test pin Normally set to high-level or brought to open state
No.2119-3/7
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