Power Supply; Power-On-Reset (Power Cycling And Brown Out Considerations) - TDK Module blu2i User Manual

blu
Figure: UART interfaces

2.2 Power Supply

The power supply for the blu
of Vcc= 3.6V to 6V. It must be able to provide sufficient current in a
transmit burst which can rise to 65mA.
The module includes regulators to provide local 3.3V and 1.8V. These
rails are accessible on connector J2 for monitoring.
Power (Vcc) should be provided via the board-to-board connector Pin 29
on J2.
Section 5.3 details the power consumption in different modes.
2.3 Power-On-Reset (Power Cycling and Brown Out
considerations)
The Module is provided with an active high reset pin (Hirose 40 way
DF12C connector pin 13). This pin whose electrical specification may be
found in section 3.3 is internally pulled to ground through a 10KΩ
resistor. Upon the application of power, the Power On Reset circuit built
into the module will ensure that the unit starts correctly.
However the module utilises a split rail design with some components
working at 3V3 and some at 1V8. Under certain extreme conditions, for
2i
Module
UART_TX
UART_RX
UART_CTS
UART_RTS
UART_DTS
UART_DTR
UART_DCD
UART RI
2i
Module has to be a single voltage source
6 of 36
Application
/RXD
/TXD
/RTS
/CTS
/DTR
/DSR
/DCD
/RING