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PCA2117DUGS/DA 数据表(PDF) 30 Page - NXP Semiconductors |
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PCA2117DUGS/DA 数据表(HTML) 30 Page - NXP Semiconductors |
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30 / 107 page  PCA2117 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 4 — 8 April 2015 30 of 107 NXP Semiconductors PCA2117 Automotive LCD driver for character displays Fig 7. Recommended start-up sequence when using an externally supplied VLCD and the internal clock signal (1) Alternatively, the external clock signal can be applied after the generation of the VLCD voltage. (2) The QPR flag (see Table 12) indicates if the programmed LCD voltage value was reached. The latency time depends on the external capacitor on the VLCD pins. For a capacitor of 100 nF a delay of 50 ms to 60 ms is expected. Fig 8. Recommended start-up sequence when using the internal charge pump and an external clock signal |
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