LTM-8530E

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Technical content

LITE-ON Technology Corp. / Optoelectronics No.90,Chien 1 Road, Chung Ho, New Taipei City 23585, Taiwan, R.O.C. Tel: 886-2-2222-6181 Fax: 886-2-2221-1948 / 886-2-2221-0660 http://www.liteon.com/opto LED Display Product Data Sheet LTM-8530E Spec No.：DS-30-98-336 Effective Date: 06/23/2000 Revision: - BNS-OD-FC001/A4

LITE-ON ELECTRONICS, INC. Property of Lite-On Only PART NO.: LTM-8530E PAGE: 1 of 8 BNS-OD-C131/A4

FEATURES

＊0.56 INCH (14.22 mm) DIGIT HEIGHT. ＊WIDE SUPPLY VOLTAGE OPERATION. ＊SERIAL DATA INPUT. ＊CONSTANT CURRENT DRIVERS. ＊CONTINUOUS BRIGHTNESS CONTROL. ＊SOLID STATE RELIABILITY-LONG OPERATION LIFE. ＊WIDE VIEWING ANGLE. ＊TTL COMPATIBLE.

DESCRIPTION

The LTM-8530E is a 0.56 inch (14.22 mm) numeric display modules, and a built-in M5450 MOS integrated circuits. The integrated circuit contains serial data input, 35 bits shift register. 34 LED driver output and a bri ghtness control. This device utilizes red orange LED chips, which are made from GaAsP on a transparent GaP substrate, and has a orange face and orange segments. The MOS integrated circuits are produced with N-channel silicon gate technology. DEVICE PART NO. DESCRIPTION RED ORANGE 2 Digit Rt. Hand DecimalLTM-8530E

LITE-ON ELECTRONICS, INC. Property of Lite-On Only PART NO.: LTM-8530E PAGE: 2 of 8 BNS-OD-C131/A4 PACKAGE DIMENSIONS NOTES: All dimensions are in millimeters. Tolerances are  0.25 mm (0.01“) unless otherwise noted.

LITE-ON ELECTRONICS, INC. Property of Lite-On Only PART NO.: LTM-8530E PAGE: 3 of 8 BNS-OD-C131/A4 PIN CONNECTION No. CONNECTION

1 V SS

2 V LED

3 NO PIN

4 NO PIN

5 NO PIN

6 BIT 17 OUTPUT

7 BIT 18 OUTPUT

8 BIT 19 OUTPUT

9 BIT 20 OUTPUT

10 BIT 21 OUTPUT

11 BIT 22 OUTPUT

12 BIT 23 OUTPUT

13 BIT 24 OUTPUT

14 DATA ENABLE

15 DATA INPUT

16 CLOCK INPUT

17 V DD

18 BRT. CONTROL

LITE-ON ELECTRONICS, INC. Property of Lite-On Only PART NO.: LTM-8530E PAGE: 4 of 8 BNS-OD-C131/A4 ABSOLUTE MAXIMUM RATING AT TA=25oC PARAMETER Symbol Min. Max. UNIT Supply Voltage *1 V DD -0.3 12 V Input Voltage V I -0.3 12 V Off State Output Voltage V O(off) 12 V LED Supply Voltage V LED 2.8 3.5 V Power Dissipation of IC *2 P D(IC) 335 mW Supply Current I DD 8.5 mA Operating Temperature Range Top -20 +60 ℃ Storage Temperature Range Tstg -20 +60 ℃ Solder Temperature: max 260℃ for max 3sec at 1.6mm below seating plane. Note: 1. All voltage are with respect to Vss(GND) 2. Power dissipation of IC is given by P D=(VLED-VF) • (IF) • (No. of Segments)+(8.5mA) • (VDD) * V F is LED forward voltage. RECOMMENDED OPERATING CONDITION AT TA=25oC Parameter Symbol Min. Typ. Max. Unit Test Condition Supply Voltage V DD 4.75 11 V Input Voltage Logical “0” Level Logical “1” Level Logical “1” Level V I -0.3 2.2 VDD -2 0.8 VDD VDD V V V ±10µA Input Bias 4.75V < V DD < 5.25V V DD > 5.25V Brightness Input Current I B 0 0.75 mA Brightness Input Voltage V B 3 4.3 V Input Current=750μA Off State Voltage V O(off) 11 V Output Sink Current Segment Off Segment On Input Clock Frequency F CLOCK 0.5 μA mA mA MHZ I B=0 µA IB=100 µA IB=200 µA Output Matching I O ±20 %

LITE-ON ELECTRONICS, INC. Property of Lite-On Only PART NO.: LTM-8530E PAGE: 5 of 8 BNS-OD-C131/A4 ELECTRICAL/OPTICAL CHARACTERISTICS AT Ta=25℃ PARAMETER SYMBOL MIN. TYP. MAX. UNIT TEST CONDITION Average Luminous Intensity I V 800 2400 cd I B=0.4mA Peak Emission Wavelength p 630 nm I B=0.4mA Spectral Line Half-Width  40 nm I B=0.4mA Dominant Wavelength d 621 nm I F=20mA Luminous Intensity Matching Ratio I V-m 2:1 I B=0.4mA FUNCTIONAL DESCRIPTION Serial data transfer from the data s ource to the display driver is accomplished with 2 signals serial data and clock. Using a format of a leading “1” followed by the 35 data bits allow data transfer without an additional load signal. The 35 data bits are latched after the 36th bit is completed, thus providing non multiple xed, direct drive to the display. Outputs change only if the serial data bits differ from the previous time. Brightness of display is determined by control the output current of LED display. A 1nF capacitor should be connected to brightness cont rol, Pin 7 to prevent possible oscillations. The output current is typically 25 times greater than the current into Pin 7 which is set by an external variable resistor. There is an internal limiting resistor of 400 Ω nominal value. Figure 1 shows the input data format. A star t bit of logical “1” proceed the 35 bits of data. At the 36 th clock, a LOAD signal is generated sync hronously with the high state of the clock, which loads the 35 bits of the shift regist ers into the latches. At the low state of the clock a RESET signal is generated which clears all the shift registers for the next set of data. The shift registers are static master-sla ve configuration. There is no clear for master portion of the first register, thus allowing continuous operation. There must be a complete set of 36 clocks or the shift registers won’t clear. When power is first applied to the chip, an internal power ON, a reset signal is generated which reset all registers and all latches. The START bit a nd first clock return the chip on its normal operation. Bit 1 is the first following the start bit and it will appear on the segment A of the digit 1. A logical “1” at the input will turn on the appropriate LED. Figure 2 shows the timing relationship between data, clock, a nd DATA ENABLE. A max. clock frequency of 0.5 MHz is assumed.

LITE-ON ELECTRONICS, INC. Property of Lite-On Only PART NO.: LTM-8530E PAGE: 7 of 8 BNS-OD-C131/A4 TABLE 1 SERIAL DATA INPUT SEQUENCE LTM-8530 BIT DIGIT SEGMENT 11 A 21 B 31 C 41 D 51 E 61 F 71 G 81 D.P. 92 A 10 2 B 11 2 C 12 2 D 13 2 E 14 2 F 15 2 G 16 2 D.P.

17 PIN 6

18 PIN 7

19 PIN 8

20 PIN 9

21 PIN 10

22 PIN 11

23 PIN 12

24 PIN 13

25 NO CONNECTION

26 NO CONNECTION

27 NO CONNECTION

28 NO CONNECTION

29 NO CONNECTION

30 NO CONNECTION

31 NO CONNECTION

32 NO CONNECTION

33 NO CONNECTION

34 NO CONNECTION

LITE-ON ELECTRONICS, INC. Property of Lite-On Only PART NO.: LTM-8530E PAGE: 8 of 8 BNS-OD-C131/A4 TYPICAL APPLICATION NOTES: 1. Clean only in water, isopropanol, ethanol, freon TF(or equivalent). 2. Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (Commision Internationale De L’Eclairage)eye-response curve.