PIC-GSM Olimex Ltd., PIC-GSM Datasheet - Page 19

• Manufacturer Part Number: PIC-GSM
• Description: MCU, MPU & DSP Development Tools DEV BRD W/GSM MOD PIC18F97J60-I/PT
• Manufacturer: Olimex Ltd.

Specifications of PIC-GSM

• Processor To Be Evaluated: PIC18F67J50
• Data Bus Width: 8 bit
• Interface Type: Ethernet, USB, I2C, SPI, UART
• Dimensions: 100 mm x 80 mm
• Operating Supply Voltage: 5 V
• Tool Type: Development Kit
• Core Architecture: PIC
• Cpu Core: PIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 1772148 51R7061

JUMPER DESCRIPTION:
BAT_E
4V_E
4V_VBAT
5V_CHG_E
DCDC_E
3V_E
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Default state - open
Default state – open.
Default state – open.
Default state closed
Default state closed
Default state closed
Default state – open.
Connects 3.7V Li-ion battery to the GSM module. Default state
is to be open to not drain the battery during stocking the
modules.
When this jumper is open state the DCDC voltage output is set
to 5V, when the jumper is closed the DCDC output voltage is
set to 4V. This is necessary when the main battery is not
connected and the supply voltage should be 4V, when the
battery is connected 4V_E jumper must be open and the DCDC
voltage should be 5V.
When the main battery is not present, this jumper feeds the 4V
from the DCDC output to the GSM module.
The GSM module have build in li-ion charge circuit. This
jumper connects the DCDC 5V output to the internal charger
circuit.
This jumper connects the DCDC output to the GSM module. It
is useful to measure the current consumption.
This jumper connects +3V to FT232RL and PIC18F97J60.It is
useful to measure the current consumption.
This is GSM module bootloader enable pin. Reserved for GSM
module firmware upgrade.
Important: 4V_E, 4V and 5V_CHG_E jumpers have to be
Do not plug in external +12V if BAT_E jumper is open!
moved together.
You should be very careful for battery voltage, which
should be over 3.8 V, never lower. Battery is charged when
voltage is 4.1 V.