SL3010

SL3010 SLS | Alldatasheet

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Technical content

The SL3010 is intended as a general purpose (RC -5) infrared remote control system for use where a low voltage supply and a large debounce time are expected. The device can generate 2048 different commands and utilizes a keyboard with a single pole switch for each key. The command are arranged so that 32 systems can be addressed, each system containing 64 different commands. The keyboard interconnection is illustrated by Fig.1.

• Low voltage requirement
• Single pin oscillator
• Biphase transmission technique
• Test mode facility

ORDERING INFORMATION

TA = -25° to 85° C for all packages. BLOCK DIAGRAM PIN ASSIGNMENT

PIN No DESIGNATION DESCRIPTION

1 X7 (IPU) sense input from key matrix

2 SSM (I) system mode selection input

3-6 Z0-Z3 (IPU) sense inputs from key matrix

7 MDATA (OP3) generated output data modulated with 1/2 the oscillator frequency at a 25%

8 DATA (OP3) generated output information

9-13 DR7-DR3 (ODN) scan drivers

14 GND ground (0V)

15-17 DR2-DR0 (ODN) scan drivers

18 OSC (I) oscillator input

19 TP2 (I) test point 2

20 TP1 (I) test point 1

21-27 X0-X6 (IPU) sense inputs fr om key matrix

28 Vcc (I) voltage supply

(I) = input (IPU) = input with p-channel pull-up transistor (ODN) = output with open drain n -channel transistor (OP3) = output 3-state FUNCTIONAL DESCRIPTION Keyboard operation Every connection of one X -input and one DR-output will be recognized as a legal key operation and will cause the device to generate the corresponding code. The same applies to every connection of one Z -input to one DR- output with the proviso that SSM must be LOW. When SSM is HIGH a wired co nnection must exist between a Z - input and DR-output. If no connection is present the system number will not be generated. Activating two or more X-inputs, Z -inputs or Z -inputs and X -inputs at the same time is an illegal action and inhibits further activity (oscillator will not start). When one X - or Z-input is connected to more than one DR -output, the last scan signal will be considered as legal. The maximum value of the contact series resistance of the switched keyboard is 7K Ω . Inputs In the quiescent sta te the command inputs X0 to X7 are held HIGH by an internal pull-up transistor. When the system mode selection (SSM) input is LOW and the system is quiescent, the system inputs Z0 to Z3 are also held HIGH by an internal pull-up transistor. When SSM is HIGH the pull-up transistor for the Z -inputs is switched off, in order to prevent current flow, and a wired connection in the Z -DR matrix provides the system number. Outputs The output signal DATA transmits the generated information in accordance with the form at illustrated by Fig.2 and Tables 1 and 2. The code is transmitted using a biphase technique as illustrated by Fig.3. The code consists of four parts:

• Start part - 1.5 bits (2 x logic 1)
• Control part - 1 bit
• System part - 5 bits
• Command part - 6 bits The output signal MDATA transmits the generated information modulated by 1/12 of the oscillator frequency with a 50% duty factor. In the quiescent state both DATA and MDATA are non -conducting (3 -state outputs). The scan driver outputs DR0 to DR7 are open drai n n-channel transistors and conduct when the circuit is quiescent. After a legal key operation the scanning cycle is started and the outputs switched to the conductive state one by one. The DR -outputs were switched off at the end of the preceding debounce cycle.

Table 1 Command matrix (X-DR) Code X-lines DR-lines Command bits no. 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 5 4 3 2 1 0 0 x x 0 0 0 0 0 0 1 x x 0 0 0 0 0 1 2 x x 0 0 0 0 1 0 3 x x 0 0 0 0 1 1 4 x x 0 0 0 1 0 0 5 x x 0 0 0 1 0 1 6 x x 0 0 0 1 1 0 7 x x 0 0 0 1 1 1 8 x x 0 0 1 0 0 0 9 x x 0 0 1 0 0 1 10 x x 0 0 1 0 1 0 11 x x 0 0 1 0 1 1 12 x x 0 0 1 1 0 0 13 x x 0 0 1 1 0 1 14 x x 0 0 1 1 1 0 15 x x 0 0 1 1 1 1 16 x x 0 1 0 0 0 0 17 x x 0 1 0 0 0 1 18 x x 0 1 0 0 1 0 19 x x 0 1 0 0 1 1 20 x x 0 1 0 1 0 0 21 x x 0 1 0 1 0 1 22 x x 0 1 0 1 1 0 23 x x 0 1 0 1 1 1 24 x x 0 1 1 0 0 0 25 x x 0 1 1 0 0 1 26 x x 0 1 1 0 1 0 27 x x 0 1 1 0 1 1 28 x x 0 1 1 1 0 0 29 x x 0 1 1 1 0 1 30 x x 0 1 1 1 1 0 31 x x 0 1 1 1 1 1 32 x x 1 0 0 0 0 0 33 x x 1 0 0 0 0 1 34 x x 1 0 0 0 1 0 35 x x 1 0 0 0 1 1 36 x x 1 0 0 1 0 0 37 x x 1 0 0 1 0 1 38 x x 1 0 0 1 1 0 39 x x 1 0 0 1 1 1 40 x x 1 0 1 0 0 0 41 x x 1 0 1 0 0 1 42 x x 1 0 1 0 1 0 43 x x 1 0 1 0 1 1 44 x x 1 0 1 1 0 0 45 x x 1 0 1 1 0 1 46 x x 1 0 1 1 1 0 47 x x 1 0 1 1 1 1 48 x x 1 1 0 0 0 0

Table 1 Command matrix (X-DR) (Continued) Code X-lines DR-lines Command bits no. 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 5 4 3 2 1 0 49 x x 1 1 0 0 0 1 50 x x 1 1 0 0 1 0 51 x x 1 1 0 0 1 1 52 x x 1 1 0 1 0 0 53 x x 1 1 0 1 0 1 54 x x 1 1 0 1 1 0 55 x x 1 1 0 1 1 1 56 x x 1 1 1 0 0 0 57 x x 1 1 1 0 0 1 58 x x 1 1 1 0 1 0 59 x x 1 1 1 0 1 1 60 x x 1 1 1 1 0 0 61 x x 1 1 1 1 0 1 62 x x 1 1 1 1 1 0 63 x x 1 1 1 1 1 1 Table 2 System matrix (Z-DR) Code X-lines DR-lines System bits no. 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 4 3 2 1 0 0 x x 0 0 0 0 0 1 x x 0 0 0 0 1 2 x x 0 0 0 1 0 3 x x 0 0 0 1 1 4 x x 0 0 1 0 0 5 x x 0 0 1 0 1 6 x x 0 0 1 1 0 7 x x 0 0 1 1 1 8 x x 0 1 0 0 0 9 x x 0 1 0 0 1 10 x x 0 1 0 1 0 11 x x 0 1 0 1 1 12 x x 0 1 1 0 0 13 x x 0 1 1 0 1 14 x x 0 1 1 1 0 15 x x 0 1 1 1 1 16 x x 1 0 0 0 0 17 x x 1 0 0 0 1 18 x x 1 0 0 1 0 19 x x 1 0 0 1 1 20 x x 1 0 1 0 0 21 x x 1 0 1 0 1 22 x x 1 0 1 1 0 23 x x 1 0 1 1 1 24 x x 1 1 0 0 0 25 x x 1 1 0 0 1 26 x x 1 1 0 1 0 27 x x 1 1 0 1 1 28 x x 1 1 1 0 0 29 x x 1 1 1 0 1 30 x x 1 1 1 1 0 31 x x 1 1 1 1 1

MAXIMUM RATINGS* Symbol Parameter Value Unit VCC DC Supply Voltage (Referenced to GND) -0.5 to +8.5 V VIN DC Input Voltage (Referenced to GND)* -0.5 to VCC +0.5 V VOUT DC Output Voltage (Referenced to GND)* -0.5 to VCC +0.5 V IIN DC Input Current ±10 mA IOUT DC Output Current ±10 mA PDO PDO Maximum Power Dissipation OSC output other outputs 100 mW mW PD Power Dissipation in Still Air 200 mW Tstg Storage Temperature -65 to +150 °C *VCC + 0.5 must not exceeed 9.0V.. *Maximum Ratings are those values beyond which damage to the d evice may occur. Functional operation should be restricted to the Recommended Operating Conditions. +Derating - Plastic DIP: - 10 mW/°C from 65° to 85°C RECOMMENDED OPERATING CONDITIONS Symbol Parameter Min Max Unit VCC DC Supply voltage (Reference to GND) 2.0 7.0 V VIH DC Input voltage (HIGH) 0.7VCC VCC V VIL DC Input voltage (LOW) 0 0.3VCC V VOUT DC Output Voltage (MDATA, DATA) - 7.0 V IIN DC Input Current - ±10 mA IOL DC Output Current (LOW) - pins 7,8 0.6 mA pins 9-13; 15-17 0.3 IOH DC Output Current (MDATA, DATA) - -0.4 mA TA Operating Temperature, All Package Types -25 85 oC This device contains protection circuitry to guard against damage due to high static voltages or electric fields. Ho wever, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high -impedance circuit. For proper operation, V IN and VOUT should be constrained to the range GND≤(VIN or VOUT)≤VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V CC). Unused outputs must be left open.

DC ELECTRICAL CHARACTERISTICS (Voltage Reference to GND) (VCC= 2.0 to 7.0V unless otherwise specified, TA=-25 to +70°C) Guaranteed Limits Symbol Parameter Test Conditions Min Max Unit ICC Quiscent supply current UIL=0B; VIH=VCC IOUT=0 mA at all outputs 40 µA INPUTS IIN Input current Pins 01, 03-06; 21-27 VIL=0V -10 -600 µA Pin 18 VIL=0V; VIH=VCC 3.0 33 ILI Input leakage current Pins 01-06;19-27 VIL=0V; VIH=VCC ±10 µA Pin 18 - -20 OUTPUTS VOH Output voltage HIGH, pins 07-08 IOH=-0.4mA VIL=0.3 VCC VCC-0.3 - V VOL Output voltage LOW Pins 07-08 IOL=0.6mA VIL=0V, VHI=0.7VCC - 0.3 V Pins 9-13; 15-17 IOL=0.3mA, VIL=0V, VIH=0.7VCC - 0.3 V ILO Output leakage current VO=VCC, VIH=VCC, VOH=VCC - 10 µA Pins 07-13; 15-17 - ILO Output leakage current VO=0V, VIH=VCC, VOL=0V - -20 µA Pins 07-08 - IOH DC Output Current Pins 9-13; 15-17 VIL=0V; VIH=VCC; VOH=VCC 10 µA AC ELECTRICAL CHARACTERISTICS TA=-25 to +85°C; VCC=2.0 to 7.0 V unless otherwise specified Symbol Parameter Test Condition Guaranteed Limits Typ Max Unit Oscillator frequency CL=160pF fOSC operational 432 450 KHz

Figure 1. Keyboard interconnection