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PCF8545ATT Datasheet(PDF) 36 Page - NXP Semiconductors |
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PCF8545ATT Datasheet(HTML) 36 Page - NXP Semiconductors |
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36 / 103 page  PCA8530 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved. Product data sheet Rev. 2 — 25 September 2014 36 of 103 NXP Semiconductors PCA8530 Automotive 102 x 4 Chip-On-Glass LCD segment driver Remarks: 1. It is important that V[8:0] is set to such a value that the resultant VLCD, including the temperature compensation VT[8:0], is higher than VDD2. 2. Programmable range of V[8:0] is from 0h to 1FFh. This would allow achieving a VLCD above 12 V but 12 V is the built-in automatic limit. 8.10.3.2 VLCD driving capability Figure 16 illustrates the main factor determining how much current the charge pump can deliver. The output resistance of the charge pump is specified in Table 31. (1) V[8:0] must be set so that VLCD > VDD2. (2) Automatic limitation for VLCD > 12 V. Fig 15. VLCD programming of PCA8530 (assuming VT[8:0] = 0h) Fig 16. Charge pump model (used to characterize the driving strength) |
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