Alex

Touch

• The touch controller used in the P8 is the CST716S, rather than the CST816S
• It seems to be an equivalent controller in terms of data output
• However this display controller cannot go into sleep mode and wake up with a tap
  • To wake it up, you must toggle the reset pin
• This means if you want tap-to-wake, you must settle with a ~3mA current draw, which is very bad
• Also, the display has a different swipe behaviour in that if you swipe a direction without removing your finger, the 816 will register the swipe, whereas the 716 will only register it when the finger is removed