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TC9285P
INFRARED REMOTE CONTROL RECEIVING LSI
TOSHIBA TC9285P
TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC
TC9285P
INFRARED REMOTE CONTROL RECEIVING LSI
The TC9285P is an infrared Remote Control signal
receiving LSI is suited for remote control of audio system,
TV, VTR, CD player, etc.
In combination with the transmission LSI : TC9243P,
TC9243F, a remote control system can be easily
composed.
FEATURES
9 Basic functions : 11 functions
Hold pulse : 9 functions DIP20-P-300-2.54A
Cyclic pulse : 2 functions Weight : 1.4g (Typ.)
o 3 functions out of 7 hold pulse functions are shift key
outputs and can be output in parallel with other outputs
corresponding to double-pushed signals sent from
sending side.
o 1 function out of 2 cyclic pulse functions can be control outputs using an external key in addition
to control by remote control signal.
0 8bit system codes are detected. System codes permitting signal receiving can be set up to 4 bits.
Interference with other equipment can be thus prevented.
PIN CONNECTION
GND -q 1 V 20 F-vor,
x_T “E 2 19 F- DP08
XT -q 3 18 F- DP16
' -q 4 17 F- DP24
W -4 5 16 F- HP01
IN26 -q s 15 F- HP02
c1N1 -q 7 14 F- HP03
CIN2 -5 8 13 F- HP04
mms-, 9 12 l-- CP25
1111054 10 11 El-CP26
1 2002-01-17
TOSHIBA
BLOCK DIAGRAM
Oscillation
circuit
Timing
generator
Shumitt
circuit
TC9285P
GND VDD
4bit DP24
microcontroller
q ROM : HP01
768x8 bits
q RAM :
16x4 bits
Input port
(with pull-down resistor)
CIN1 CIN2 HPOS HP06
PIN FUNCTION
PIN No. SYMBOL PIN NAME FUNCTION & OPERATION
1 GND Powersupply .
A I I I . V = . V T .
20 VDD terminal pp let; supply voltage ( DD 5.0 yp.)
2 W Oscillator Input/output terminals for the ceramic oscillators, with
3 XT terminal built-in amplifier circuit and feedback resistor.
4 A3't' Reset input When this pm IS set at L level, the inside Is initialized.
With a pulI-up resistor.
5 Rv-m, Remote control Input remote control signal with sub-carrier signal
X IN signal input removed.
. . Every time "H" is input, CP26 output is reversed.
6 Ibl26 Cyclic input With a pull-down resistor.
7, 8 CIN1, CINZ Code input Input terminal to set system code permitting receiving.
Every time corresponding remote
. control signal is input, output is E
ll, 12 CP26, CP25 Cyclic output reversed. When the power source is ON ff
(RESET), this pin is set at "L" level. .5 T
9, IO . . . " " E
13--16 HP01 HP06 Hold output This pin IS kept et H. level as. long as C)
17--19 DP08, 16, 24 remote control signal IS being input.
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TOSHIBA TC9285P
DESCRIPTION OF OPERATION
Establishment of system code permitting receiving
8bit system code is provided for the transmission format of the transmission LSI : TC9243P, TC9243F
to prevent interference with other equipment. When this system code is established for each of
various equipment, it is possible to identify equipment and prevent interference.
On the TC9285P, the lower 4 bits of a system code permitting receiving of remote control signal
can be set and the upper 4 bits have been fixed at "100000". (Settable range : ''80''--''83" HEX)
Once a system code permitting receiving has been set up, only when the system code for the
received remote control signal is in accord with the set system code, the following key data code is
accepted.
A system code permitting receiving is set by the jumpers provided between CIN1--2 pins and VDD.
Each of the jumpers corresponds to bit 0~1 (SO-SI) of a system code and when the jumper is
connected, the corresponding bit is set at "I".
Check of receiving signals
A check code is provided in a single transmission waveform of the transmission format of the
transmission LSI : TC9243P, TC9243F to prevent malfunction due to erroneous data take-in.
A system code is followed by a forward code and a key data code is followed by a reverse code.
SYSTEM CODE SYSTEM CODE KEY DATA CODE KEY DATA CODE
LEADER PULSE
So $1 $2 S? S4 S5 S6 S7 so S1 S2 $3 S4 S5 S6 S7 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7
The TC9285P fully decodes all data and regards the data valid only when the first and second codes
sent twice agree with each other.
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TOSHIBA TC9285P
3. Output pulses HP, DP and CP
KEY ON
HP01--HP06, DP08, DP16 and DP24 (Hold pulses)
/ SINGLE SIGNAL
RECEIVING SIGNAL Ill
SINGLE OUTPUT About 110ms
KEY ON
CONTINUOUS SIGNAL
RECEIVING SIGNAL III p" Ill tt Ill fl
CONTINUOUS OUTPUT
KEY ON
RECEIVINGSIGNAL Ill A III B
OUTPUT A
OUTPUT B
About 110ms
-liLlis"
About 110ms
About 110ms
The hold pulse checks a system code of an initial single signal and a received signal and
becomes "H" level only when data is valid.
If a received signal is single signal, the output becomes "L" level about 110ms later.
The output is held at "H" level as long as the key is kept pushed continuously after a single
signal was output and continuous signals are being input.
If the key was released and the continuous signals have been stopped, it is judged that the
key was released about 110ms later from the last continuous signal and the output is set at
"L" level.
Further, DP08, DP16 and DP24 are shift key outputs and can be set at "H" level in parallel
with other outputs corresponding to the double pushed signals sent from a transmitter.
The output of this LSI is best suited for REC-PLAY, REC-PAUSE and REC-REV outputs of a tape
4 2002-01-17
TOSHIBA TC9285P
3-2. CP25, CP26 (Cyclic pulses)
KEY ON I tt
RECEIVING SIGNAL Ill tt III ll
IN26 INPUT
CYCLIC OUTPUT u (CP26 ONLY)
o The cyclic pulse is reversed every time a single signal is received.
Further, CP26 can be reversed by setting the IN26 pin at "H" level.
Because this input is not valid unless output is stabilized for 4ms, no external part for
preventing chattering is required.
It This cyclic pulse is best suited for outputs of power supply ON/OFF, MUTE, etc.
It When output of HP03, HP04 or CP26 is generated, cyclic output of CP25 is cleared.
4. Code assignment (Key No. are transmission key No. of TC9243P, TC9243F.)
KEY DATA CODE
KEY No. D0 D1 D2 D3 D4 Ds D6 D7 OUTPUT FUNCTION
K01 1 0 0 0 0 X X yd. HPO1
K02 0 1 0 0 0 yd. X X HP02
K03 1 1 0 0 0 X X yd. HP03 Hold
K04 0 0 1 0 0 yd. X .yd. HP04
K05 1 o 1 o o .yd. .yd. yd. HP05
K06 o 1 1 0 o .)K. .)K. >:< HP06
K08 >.< .7.4 .)K. yd. .y.4 1 0 0 DP08 Hold
K16 >.< )K .yd. >.< .)K. 1 1 0 DP16 &
K24 yd. .yd. >.< yd. X 1 0 1 DP32 Shift
K25 1 0 0 1 1 yd. X X CP25 .
. . . Cyclic
K26 0 1 O 1 1 X X yd. CP26
.2f : Don't care (Corresponding outputs change regardless of data.)
5 2002-01-17
TOSHIBA TC9285P
MAXIMUM RATINGS (Ta =25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VDD -0.r-6.0 V
Input Voltage VIN GND-0.3--VDD+0.3 V
Power Dissipation PD 350 mW
Operating Temperature Topr -40--85 "C
Storage Temperature Tstg -6r-150 °C
ELECTRICAL CHARACTERISTICS
Recommended operating conditions (Unless otherwise specified, VDD=5.0V, Ta =25°C)
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Operating Supply - -- 0
Voltage VDD - Ta-- 40 85 C 4.5 5.5 V
Oscillation Frequency fosc - - 400 800 kHz
"H" Level IhHI - (Except RST, RX IN) VDDXOJ VDD V
Input "H" Level VIHZ - (RST, RX IN) VDDXO.8 VDD V
Voltage "L" Level V|L1 - (Except RiT, RX IN) 0 VDDXOB V
"L" Level VILZ - (r1S'r, RX IN) 0 VDDXO.2 V
DC characteristics (Unless otherwise specified, VDD=5.0V, Ta =25°C)
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Operating Supply -
Current IDD - fosc=455kHz - 1.0 3.0 mA
Pull-down Resistor RD - (IN26, CIN) 100 200 400 k0
PulI-up Resistor RU - (ACT) 25 50 100 k0
Output "H" Level IOH - (CP, HP, DP) VOH =4V - 1.0 -4.0 - mA
Current "L" Level IOL - (CP, HP, DP) VOL=1V 1.0 8.0 - mA
Input Leak Current ILI - VIN =VDD, GND -1.0 - 1.0 pA
TOSHIBA TC9285P
APPLICATION CIRCUIT
l. TC9285P circuit example
Control Signal
ZOMMLGLGLLLGLM
VDD DP08 DP16 DP24 HP01 HP02 HP03 HP04 CP25 CP26
. TC9285P
GND x-T XT ' RXlN IN26 CIN1 CIN2 HP06 HPOS
1 2 3 4
R1 I (
(if T f 9
From Photo receiver
(*) Ceramic oscillator
CSB455E (Murata Seisakusyo) C1 =C2 =100pF, R2 = unnecessary
In case of influenced by oscillation noise, add resistor R1 to 10kQ MAX.
FCR455K3 (TDK) C1 =C2 =220pF, R2 =4.7k0, R1 = unnecessary
In case of influenced by oscillation noise, add resistor R2 to large (>4.7kQ).
or equivalent
7 2002-01-17
TOSHIBA TC9285P
PACKAGE DIMENSIONS
DlP20-P-300-2.54A Unit : mm
0—01 5°
Y'"---''--'''-'''''',-?
25.1 MAX ,
24.6:02 d
3.13:0.3
0.87TYP
Weight : 1.49 (Typ.)
8 2002-01-17
TOSHIBA TC9285P
RESTRICTIONS ON PRODUCT USE
000707EBA
OTOSHIBA is continually working to improve the quality and reliability of its products.
Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent
electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer,
when utilizing TOSHIBA products, to comply with the standards of safety in making a safe
design for the entire system, and to avoid situations in which a malfunction or failure of such
TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified
operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please
keep in mind the precautions and conditions set forth in the "Handling Guide for
Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc..
OThe TOSHIBA products listed in this document are intended for usage in general electronics
applications (computer, personal equipment, office equipment, measuring equipment, industrial
robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor
warranted for usage in equipment that requires extraordinarily high quality and/or reliability or
a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended
Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship
instruments, transportation instruments, traffic signal instruments, combustion control
instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA
products listed in this document shall be made at the customer's own risk.
0 The products described in this document are subject to the foreign exchange and foreign trade
OThe information contained herein is presented only as a guide for the applications of our
products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of
intellectual property or other rights of the third parties which may result from its use. No
license is granted by implication or otherwise under any intellectual property or other rights of
TOSHIBA CORPORATION or others.
0 The information contained herein is subject to change without notice.
9 2002-01-17
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