Datasheet

 2012 Microchip Technology Inc. DS41663A-page 19
MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER
FIGURE 7-2: SLEEP FUNCTIONALITY
7.3 Non-Volatile RAM (NVRAM)
Permanent storage of parameters that have been mod-
ified can be achieved using the internal NVRAM. This
NVRAM is not meant for continuous writing, as it has a
low write cycle limit of 20,000.
Upon startup, the NVRAM’s data (if present) is loaded
into the controller. If no data is available in the NVRAM,
the device defaults are loaded instead.
Please note that parameters cannot be written individ-
ually to the NVRAM. All registers will be written with
one command. See the applicable command within the
command set for more details. (Section 5.6 “Full
Command Set”)
No touch for
[SLP2] msec?
[Normal Full Decode
of Sensor]
Transmit
Touch
Sleep for
[SLP1] msec
Wake up;
Touch exists?
Yes
No
Yes
Touch?
No
No
Yes