NT1080 Datasheet, PDF (16/22 Pages) List of Unclassifed Manufacturers – 8-bit Microcontroller

NT1080
7 GPIO
Each GPIO has the corresponding touch key output. For example, the OUTn pin corresponds to the
SENn pin. Figure 7-1 shows all the output pins in Open-Drain mode. Figure 7-2 shows that it is
easy to connect the system with the voltage lower than V_DD and it is convenient to achieve analog
output mode via a resistor ladder. Add a pull-high resistor to perform active-high state. There are
many kinds of output modes related to address 0x06 settings. Table 7-1 shows the detailed settings
on relationship of each bit.
V_DD
Output
N
Figure 7-1 Open-Drain
V_DD
OUT1
Vo
OUT2
Open- _OUT3
Drain
OUT4
OUT5
Figure 7-2 Resistor-voltage Divider Output
Application
Single key, output low level (when active)
Single key, output high level
Multi key, output low level
Multi key, output high level
Single key, switch, output low level
Single key, switch, output high level
Multi
0
0
1
1
0
0
Toggle
0
0
0
0
1
1
Act-High
0
1
0
1
0
1
Lock
0
0
0
0
0
0
Oct 26, 2015
Page 16 of 22
Rev 1.0