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PCF21219DUGR bảng dữ liệu(PDF) 39 Page - NXP Semiconductors

tên linh kiện PCF21219DUGR
Giải thích chi tiết về linh kiện  Automotive LCD driver for character displays
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PCF21219DUGR bảng dữ liệu(HTML) 39 Page - NXP Semiconductors

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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
39 of 107
NXP Semiconductors
PCA2117
Automotive LCD driver for character displays
Remarks:
1. VLCDx[8:0] has to be set to such a value that the resultant VLCD, including the
temperature compensation, is higher than VDD2.
2. The programmable range of VLCDx[8:0] is from 0h to 1FFh. It would allow achieving a
VLCD of higher voltages but the PCA2117 has a built-in automatic limitation set to
16 V.
8.4.4 VLCD drive capability
Figure 20 to Figure 22 illustrate the drive capability of the internal charge pump for various
conditions. VLCD is internally limited to 16 V.
(1) VLCDx[8:0] must be set such that VLCD > VDD2.
(2) Automatic limitation for VLCD > 16 V.
Fig 19. VLCD programming of PCA2117 (assuming VT[8:0] = 0h)



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