Datasheet

Touchscreen controller STMPE811
44/65 Doc ID 14489 Rev 6
TSC_FRACTION_Z Touchscreen controller FRACTION_Z
Address: 0x56
Type: R
Reset: 0x00
Description: This register allows to select the range and accuracy of the pressure measurement
TSC_I_DRIVE Touchscreen controller drive I
Address: 0x58
Type: R/W
Reset: 0x00
Description: This register sets the current limit value of the touchscreen drivers
TSC_SHIELD Touchscreen controller shield
Address: 0x59
Type: R
Reset: 0x00
Description: Writing each bit would ground the corresponding touchscreen wire
76543 2 1 0
RESERVED FRACTION_Z
[7:3] RESERVED
[2:0] FRACTION_Z:
000: Fractional part is 0, whole part is 8
001: Fractional part is 1, whole part is 7
010: Fractional part is 2, whole part is 6
011: Fractional part is 3, whole part is 5
100: Fractional part is 4, whole part is 4
101: Fractional part is 5, whole part is 3
110: Fractional part is 6, whole part is 2
111: Fractional part is 7, whole part is 1
76543 2 1 0
RESERVED DRIVE
[7:1] RESERVED
[0] DRIVE: maximum current on the touchscreen controller (TSC) driving channel
0: 20 mA typical, 35 mA max
1: 50 mA typical, 80 mA max
76543 2 1 0
RESERVED X+ X- Y+ Y-
[7:4] RESERVED