HCMS-2976 Avago Technologies US Inc., HCMS-2976 Datasheet
HCMS-2976
Specifications of HCMS-2976
Related parts for HCMS-2976
HCMS-2976 Summary of contents
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... HCMS-2919, HCMS-2976 High Performance CMOS 5x7 AlphaNumeric GaN Blue Display Data Sheet Description These products are high performance, easy to use dot matrix displays driven by on-board CMOS IC. Each display can be directly microprocessor, thus eliminating the need for cumbersome interface components. The serial IC interface allows higher character count information displays with a minimum of data lines ...
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... TYP. (0.020 ± 0.005) 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. Figure 2. HCMS-2976 package dimensions 2 4.45 (0.175) TYP. 10.16 (0.400) MAX 2.11 (0.083) TYP. ...
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... V LED GND to GND - LED LOGIC Notes: For further description, see Appendix B, Electrical Considerations, “VLOGIC and VLED Considerations”. 3 HCMS-2919 HCMS-2976 -0.3V to 7.0V -0.3V to 5.5V -0. +0.3V LOGIC -40°C to +85°C A 85% -55°C to 100°C 260°C for 5 sec 250°C for 3 sec Class 1, 0-1999V =25° ...
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Electrical Characteristics Over Operating Temperature Range (-40°C to +85°C) Parameter Symbol Input Leakage Current LOGIC LOGIC OPERATING (OPT LOGIC LOGIC [1] SLEEP (SLP (BL) LED LED BLANK I I (SLP) 15.0 LED LED ...
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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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... Timing specifications increase 0.3ns per pf of capacitive loading above 15pF. 2. This parameter is valid for Simultaneous Mode data entry of the Control Register. Display Overview The HCMS-29xx blue LED displays are driven by on- board CMOS ICs. The LEDs are configured as 5x7 font characters and are driven in groups of 4 characters per IC ...
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Dot Register The Dot Register holds the pattern to be displayed by the LEDs. Data is loaded into the Dot Register according to the procedure shown in Table 1 and Figure 3. First RS is brought low, then CE is ...
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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 5x8 dot matrix character locations, but only 7 of the 8 rows have LEDs (see Figure 4 ...
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Control Register Data Loading Data is loaded into the Control Register, MSB first, according to the procedure shown in Table 1 and Figure 3. First brought to logic high and then CE is brought to logic low. Next, ...
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... These bits must always be programmed to logic low. 10 Cascaded ICs 0 Figure 6 shows how two ICs are connected within an HCMS-29XX display. The first IC controls the four left- most characters and the second IC controls the four is right-most characters. The Dot Registers are connected OUT in series to form a 320-bit dot shift register ...
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RESET CLK RESET CLK D OUT D OUT SEL SEL OSC OSC D IN Figure 6. Cascaded ICs. 11 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 below. A typical value for Rθ is 100°C/W. This value is typical JA for a display ...
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... The inputs to the ICs are protected against static discharge and input current latchup. However, for best results, standard CMOS handling precautions should be used. Before use, the HCMS-29XX should be stored 13 in antistatic tubes or in conductive material. During assembly, a grounded conductive work area should be used and assembly personnel should wear conductive wrist straps ...
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Appendix E. Display Brightness Two ways have been shown to control the brightness of this LED display: setting the peak current and setting the duty factor. Both values are set in Control Word 0. To compute the resulting display brightness ...