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SSD1306Z Datasheet(PDF) 27 Page - List of Unclassifed Manufacturers |
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SSD1306Z Datasheet(HTML) 27 Page - List of Unclassifed Manufacturers |
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27 / 65 page ![]() SSD1306 Rev 1.1 P 27/59 Apr 2008 Solomon Systech 8.9 Power ON and OFF sequence The following figures illustrate the recommended power ON and power OFF sequence of SSD1306 Power ON sequence: 1. Power ON VDD 2. After VDD become stable, set RES# pin LOW (logic low) for at least 3us (t1) (4) and then HIGH (logic high). 3. After set RES# pin LOW (logic low), wait for at least 3us (t2). Then Power ON VCC. (1) 4. After VCC become stable, send command AFh for display ON. SEG/COM will be ON after 100ms (tAF). Figure 8-16 : The Power ON sequence Power OFF sequence: 1. Send command AEh for display OFF. 2. Power OFF VCC. (1), (2), (3) 3. Power OFF VDD after tOFF. (5) (Typical tOFF=100ms) Figure 8-17 : The Power OFF sequence Note: (1) Since an ESD protection circuit is connected between VDD and VCC, VCC becomes lower than VDD whenever VDD is ON and VCC is OFF as shown in the dotted line of VCC in Figure 8-16 and Figure 8-17. (2) VCC should be kept float (i.e. disable) when it is OFF. (3) Power Pins (VDD , VCC) can never be pulled to ground under any circumstance. (4) The register values are reset after t1. (5) VDD should not be Power OFF before VCC Power OFF. OFF ON VDD RES# ON VCC Send AFh command for Display ON VDD RES# OFF t1 SEG/COM tAF ON OFF VCC GND t2 OFF VDD VDD VCC Send command AEh for display OFF OFF VCC OFF OFF tOFF |
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