Interlink Electronics 4-Zone FSR Mouse Sensor - Manual (Page 13)

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11
4-Zone Mouse Sensor
Integration Guide
8.0 Electrical Specifications
8.1 Controller Chip
The controller chip used in this schematic is microchip PIC18F14K50. This IC, when
combined with Interlink’s proprietary FW, forms the controller engine for this sensor type.
8.2 Clock Signal
The default setting for a clock signal comes from a 6MHz crystal. To meet your needs,
Interlink can supply another version of this chip that will work with a direct clock signal.
8.3 Operating Current
Under normal operation, the device draws between 10mA to 12mA. This current draw is
typical of a full assembly (chip, sensor, etc).
8.4 Mouse Speed Configuration
Mouse speed can be configured by the user. R1 is the controlling factor for this. The
default value that is recommended by Interlink is 3.3K
. If desired, the user can change
R1 values to slow down or speed up the mouse. In order to achieve a higher speed, the R1
value must be increased. Interlink recommends that the user should not exceed the limits
of 1K
 to 10K. (See Figure 8)