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PCF8576CU/2 数据表(PDF) 27 Page - NXP Semiconductors |
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PCF8576CU/2 数据表(HTML) 27 Page - NXP Semiconductors |
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27 / 44 page ![]() 1998 Jul 30 27 Philips Semiconductors Product specification Universal LCD driver for low multiplex rates PCF8576C Fig.19 Synchronization of the cascade for the various PCF8576C drive modes. Excessive capacitive coupling between SCL or CLK and SYNC may cause erroneous synchronization. If this proves to be a problem, the capacitance of the SYNC line should be increased (e.g. by an external capacitor between SYNC and VDD). Degradation of the positive edge of the SYNC pulse may be countered by an external pull-up resistor. (a) static drive mode. (b) 1 : 2 multiplex drive mode. (c) 1 : 3 multiplex drive mode. (d) 1 : 4 multiplex drive mode. handbook, full pagewidth T= frame f frame 1 BP0 SYNC BP1 (1/2 bias) SYNC BP2 (a) static drive mode. (b) 1 : 2 multiplex drive mode. (c) 1 : 3 multiplex drive mode. (d) 1 : 4 multiplex drive mode. BP3 SYNC SYNC BP1 (1/3 bias) MBE535 |
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