Intel® Edison Breakout Board Expansion Power Supply - Intel Edison Hardware Manual

Pin
J18 - pin 12 GP129
J18 - pin 13 GP130
J18 - pin 14 FW_RCVR
J20 - pin 1 V_VSYS
J20 - pin 2 V_V3P30
J20 - pin 3 GP134
J20 - pin 4 GP45
J20 - pin 5 GP47
J20 - pin 6 GP49
J20 - pin 7 GP15
J20 - pin 8 GP84
J20 - pin 9 GP42
J20 - pin 10 GP41
J20 - pin 11 GP78
J20 - pin 12 GP79
J20 - pin 13 GP80
J20 - pin 14 GP81
J19 - pin 1 NC
J19 - pin 2 V_V1P80
J19 - pin 3 GND
J19 - pin 4 GP44
J19 - pin 5 GP46
J19 - pin 6 GP48
J19 - pin 7 RESET_OUT#
J19 - pin 8 GP131
J19 - pin 9 GP14
J19 - pin 10 GP40
J19 - pin 11 GP43
J19 - pin 12 GP77
J19 - pin 13 GP82
J19 - pin 14 GP83
2.3 Intel® Edison Breakout Board expansion power supply
Intel® Edison is a low-power device. In general, it does not draw more than 200 mA with 600 mA short duration
spikes during Wi-Fi transmit. Therefore, an Intel® Edison device may run on USB power (when configured as a
device), or an external power adapter from 7 to 15 V.
Power from the external power adapter goes to a DC-DC converter and down-converted to 5 V. The 5 V rail is
diode ORed with the USB VBUS rail. This power goes to a battery recharger IC, which limits the output voltage to
4.4 V. This voltage is in the safe range for the Edison module VSYS. The VSYS power range is 3.15 to 4.5 V. This
allows the Intel® Edison device to run off a standard lithium-ion battery. The charger IC is configured to limit the
current to 1 A. The charger is programmed to charge at 190 mA. This charger is designed to charge standard
lithium-ion batteries with 4.2 V maximum charging voltage. You are responsible for choosing a suitable battery and
following all safety precautions, to prevent overcharging or charging when the battery temperature is too high.
Intel® Edison Breakout Board
Hardware Guide
10
Description
UART1_RTS GPIO, UART1 ready to send output.
UART1_RX GPIO, UART1 receive data input.
Firmware recovery, active high on boot.
System input power.
System 3.3 V output.
UART2_RX UART2 Rx (input).
COMPASS_DRDY GPIO, compass data ready input.
ACCELEROMETER_INT_2 GPIO, accelerometer interrupt input 2.
GYRO_INT GPIO, gyro interrupt input.
GPIO.
SD_CLK_FB GPIO, SD clock feedback input.
SSP2_RXD GPIO, SSP2 Rx data input.
SSP2_FS GPIO, SSP2 frame sync output.
SD_CLK GPIO, SD clock output.
SD_CMD GPIO, SD command.
SD_DAT0 GPIO, SD data 0.
SD_DAT1 GP81 SD data 1.
No connect.
System 1.8 V I/O output power.
Ground.
ALS_INT_N GPIO, ALS interrupt input.
ACCELEROMETER_INT_1 GPIO, accelerometer interrupt input.
GYRO_DRDY GPIO, gyro data ready input.
System reset out low.
UART1_TX GPIO, UART 1 Tx output.
AUDIO_CODEC_INT GPIO, audio codec interrupt input.
SSP2_CLK GPIO, SSP2 clock output.
SSP2_TXD GPIO, SSP2 transmit data output.
SD_CDN GPIO, SD card detect low input.
SD_DAT2 GPIO, SD data 2
SD_DAT3 GPIO, SD data 3
High-Level Functional Description
January 2015
Document Number: 331190-006