Data Sheet

Copyright © Bridgetek Pte Ltd 5
BT81X (815/6) Advanced Embedded Video Engine Datasheet
Version 1.0
Document No.: BRT_000220 Clearance No.: BRT#126
4.8 Touch-Screen Engine ............................................................... 33
4.8.1 Resistive Touch Control .............................................................................. 33
4.8.2 Capacitive Touch Control ............................................................................ 34
4.8.3 Compatibility Mode .................................................................................... 34
4.8.4 Extended Mode ......................................................................................... 35
4.8.5 Short-Circuit Protection .............................................................................. 35
4.8.6 Capacitive Touch Configuration ................................................................... 35
4.8.7 Host Driven Multi-Touch ............................................................................. 35
4.8.8 Touch Detection in none-ACTIVE State ........................................................ 37
4.9 Power Management ................................................................. 37
4.9.1 Power Supply ........................................................................................... 37
4.9.2 Internal Regulator and POR ........................................................................ 38
4.9.3 Power Modes ............................................................................................ 38
4.9.4 Reset and Boot-up Sequence ...................................................................... 40
4.9.5 Pin Status at Different Power States ............................................................ 40
5 Memory Map ................................................................ 42
5.1 Registers.................................................................................. 42
5.2 Chip ID ..................................................................................... 47
6 Devices Characteristics and Ratings ............................ 48
6.1 Absolute Maximum Ratings ...................................................... 48
6.2 ESD and Latch-up Specifications .............................................. 48
6.3 DC Characteristics .................................................................... 48
6.4 AC Characteristics .................................................................... 51
6.4.1 System Clock and Reset ............................................................................. 51
6.4.2 SPI Interface Timing .................................................................................. 52
6.4.3 RGB Interface Timing ................................................................................ 53
7 Application Examples .................................................. 54
8 Package Parameters .................................................... 56
8.1 Part Markings .......................................................................... 56
8.1.1 Top Side .................................................................................................. 56
8.1.2 Bottom Side ............................................................................................. 56
8.2 VQFN-64 Package Dimensions ................................................. 57
8.3 Solder Reflow Profile ............................................................... 57
9 Contact Information .................................................... 59
Appendix A – References ................................................... 60