HCMS-3904 Avago Technologies US Inc., HCMS-3904 Datasheet
HCMS-3904
Specifications of HCMS-3904
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HCMS-3904 Summary of contents
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... V High Performance CMOS 5x7 AlphaNumeric Displays Data Sheet HCMS-3901, HCMS-3902, HCMS-3961, HCMS-3962, HCMS-3911, HCMS-3912, HCMS-3971, HCMS-3972 HCMS-3903, HCMS-3904, HCMS-3963, HCMS-3964, HCMS-3913, HCMS-3914, HCMS-3973, HCMS-3974 Description The 3.3 V HCMS-39xx family is similar to the 5.0 V HCMS-29xx family, except it operates at a lower operating voltage. Package dimen sions and pin outs are exactly the same for both families ...
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... TYP. (0.020 ± 0.005) 2.54 ± 0.13 (0.100 ± 0.005) (NON ACCUM.) Figure 2. HCMS-391X Package dimensions NOTES: 1. DIMENSIONS ARE IN mm (INCHES). 2. UNLESS OTHERWISE SPECIFIED, TOLERANCE ON DIMENSIONS IS ± 0.38 mm (0.015 INCH). 3. LEAD MATERIAL: SOLDER PLATED COPPER ALLOY. 2 PIN FUNCTION ...
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... PART NUMBER HCMS-397x YYWW 0.51 (0.020) 0.51 ± 0.13 TYP. (0.020 ± 0.005) Figure 4. HCMS-397X Package dimensions NOTES: 1. DIMENSIONS ARE IN mm (INCHES). 2. UNLESS OTHERWISE SPECIFIED, TOLERANCE ON DIMENSIONS IS ± 0.38 mm (0.015 INCH). 3. LEAD MATERIAL: SOLDER PLATED COPPER ALLOY. 3 2.54 (0.100) TYP. 3 11.43 (0.450) MAX. ...
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... For further description, see Appendix B, Electrical Considerations, “VLOGIC and VLED Considerations”. 4 Red HCMS-3902 HCMS-3912 HCMS-3962 HCMS-3972 ..................................... -0 7.0 V LOGIC ................................................ -0 5 [1] ................................ -40°C to +85°C [1] = 25°C A Min. Max. Units 3.1 5.5 V 3.1 5.5 V -0.3 +0.3 V Green Orange HCMS-3903 HCMS-3904 HCMS-3913 HCMS-3914 HCMS-3963 HCMS-3964 HCMS-3973 HCMS-3974 +0.3 V LOGIC ...
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... Refers to the initial case temperature of the device immediately prior to measurement. 2. For comparison purpose with existing HCMS-29xx 5 V devices. The Typical and Minimum Luminous Intensity per LED Character Average can be calculated by dividing the values in the table by two for the test condition 50% Peak Current, 100% Pulse Width and V 3. Measured with all LEDs illuminated in a digit. 4. Dominant wavelength, λ ...
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Electrical Description Pin Function Description RESET (RST) Sets Control Register bits to logic low. The Dot Register contents are unaffected by the Reset pin. (logic low = reset; logic high = normal operation). DATA Serial Data input ...
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AC Timing Characteristics over Temperature Range (-40 to +85°C) Timing Diagram Ref. Number Description 1 Register Select Setup Time to Chip Enable 2 Register Select Hold Time to Chip Enable 3 Rising Clock Edge to Falling Chip Enable Edge 4 ...
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... Display Overview The HCMS-39XX series is a family of LED displays driven by on-board CMOS ICs. The LEDs are configured as 5x7 font characters and are driven in groups of 4 characters per IC. Each IC consists of a 160-bit shift register (the Dot Register), two 7-bit Control Words, and refresh circuitry. ...
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... REGISTERS NOTE: 1. DATA IS COPIED TO THE CONTROL REGISTER OR THE DOT LATCH AND LED OUTPUTS WHEN CE IS HIGH AND CLK IS LOW. Figure 5. HCMS-39XX write cycle timing diagram Pixel Map In a 4-character display, the 160-bits are arranged as 20 columns by 8 rows. This array can be conceptualized as four dot matrix character locations, but only 7 of the 8 rows have LEDs (see Figures 6 & ...
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... CLR REGISTER D Q SELECT RS (LATCHED) REFRESH CONTROL RESET RST PRESCALE VALUE H ÷8 OSC OSCILLATOR L H OSC SELECT BLANK Figure 6. Block diagram for HCMS-39xx 10 DATA OUT RS (LATCHED SER/PAR MODE DI 40 BIT 40 BIT S.R. DATA DO DO OUT CURRENT REFERENCE ANODE PWM BRIGHTNESS CONTROL 0 ...
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PIXEL DATA TO NEXT CHARACTER Figure 7. Pixel map 11 DATA FROM PREVIOUS CHARACTER ROW 7 ROW 6 ROW 5 ROW 4 ROW 3 ROW 2 ROW 1 ROW 0 (NOT USED) ...
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Control Register The Control Register allows software modification of the IC’s operation and consists of two independent 7-bit control words. Bit D in the shift register selects 7 one of the two 7-bit control words. Control Word 0 performs pulse ...
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Table 2. Control Shift Register. CONTROL WORD Bit D 7 Set Low to Select Control Word 0 Peak Current Brightness Control – DISABLES ...
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... These bits must always be pro-grammed to logic low. Cascaded ICs is connected OUT Figure 8 shows how two ICs are connected within an HCMS-39XX display. The first IC controls the four left- most characters and the second IC controls the four changes D to OUT right-most characters. The Dot Registers are connected in series to form a 320-bit dot shift register ...
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RESET CLK RESET CLK D D OUT OUT SEL SEL OSC OSC D IN Figure 8. Cascaded ICs 15 IC1 BITS 0-159 CHARACTERS 0 RESET IC2 BITS 160-319 CLK ...
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Appendix A. Thermal Considerations The display IC has a maximum junction temperature of 150°C. The IC junction temperature can be calculated with Equation 1 in Table 3. A typical value for Rθ is 100°C/W. This value is typical JA for ...
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... The inputs to the ICs are protected against static discharge and input current latch up. However, for best results, standard CMOS handling precautions should be used. Before use, the HCMS-39XX should be stored in antistatic tubes or in conductive material. During assembly, a grounded conductive work area should be ...
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Appendix C. Oscillator The oscillator provides the internal refresh circuitry with a signal that is used to synchronize the columns and rows. This ensures that the right data is in the dot drivers for that row. This signal can be ...