MAX11800–MAX11803
Low-Power, Ultra-Small Resistive Touch-Screen
Controllers with I2C/SPI Interface
______________________________________________________________________________________
53
Note: These settings apply to the end of all measurement and combined commands and are required for proper data tagging and
interrupt management. The exception is direct conversion commands with CONT = 1. These commands do not enter PUR/PUF inter-
vals for the purpose of data tagging.
*
While 2μs is the minimum PUR interval listed, for this setting, the XPSW is not engaged, allowing for minimal power operation
(essentially adding 2μs to the PUF time).
BIT
7
6
5
4
3
2
1
0
NAME
PUR[3:0]
PUF[3:0]
DEFAULT
0
BIT
NAME
DESCRIPTION
MAX11800/
MAX11801
MAX11802/
MAX11803
7:4
PUR[3:0]
Rough pullup time (tPUR)
0000: 2μs*
1000: 1ms
0001: 2μs
1001: 2ms
0010: 4μs
1010: 5ms
0011: 8μs
1011: 10ms
0100: 10μs
1100: 20ms
0101: 50μs
1101: 50ms
0110: 100μs
1110: 100ms
0111: 500μs
1111: 200ms
Yes
3:0
PUF[3:0]
Fine pullup time (tPUF)
0000: 10μs
1000: 1ms
0001: 20μs
1001: 2ms
0010: 50μs
1010: 5ms
0011: 80μs
1011: 10ms
0100: 100μs
1100: 20ms
0101: 200μs
1101: 50ms
0110: 500μs
1110: 100ms
0111: 800μs
1111: 200ms
Yes
Touch-Detect Pullup Timing Configuration Register (0x07)