User Guide

5.3 Battery Charger Detect and GPIO (JP1)
The JP1 header provides access to the CP2102N Battery Charger Detect and GPIO pins. See the table below for the JP1 pin descrip-
tions.
The row of LEDs next to the JP1 header serves as the indicators for each of the functions assigned to the GPIO pins. Removing a JP1
header shorting block disconnects the LED from the corresponding pin and CP2102N signal.
Note: The CP2102N Battery Charger Detect LEDs are connected in an active-high configuration, while the GPIO pin LEDs are connec-
ted in an active-low configuration.
Table 5.5. JP1 Pin Descriptions
Pins Signal CP2102N Direction Description
21-22 GND — Ground
19-20 CHREN Output Enable charging circuit (100
mA)
17-18 CHR0 Output Enable charging circuit (500
mA)
15-16 CHR1 Output Enable charging circuit (1.5 A)
13-14 GPIO.6 Input / Output General Purpose I/O 6
11-12 GPIO.5 Input / Output General Purpose I/O 5
9-10 GPIO.4 Input / Output General Purpose I/O 4
7-8 GPIO.3 Input / Output General Purpose I/O 3
5-6 GPIO.2 Input / Output General Purpose I/O 2
3-4 GPIO.1 Input / Output General Purpose I/O 1
1-2 GPIO.0 Input / Output General Purpose I/O 0
UG205: CP2102N-EK Kit User's Guide
Hardware Overview
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