RN1723 datasheet(14/32 Pages) MICROCHIP

14 / 32 page

RN1723

DS70005224A-page 14

 2015 Microchip Technology Inc.

The stand-alone boost circuitry is shown in Figure 2-5.

FIGURE 2-5:

POWER SUPPLY FOR BATTERY (1.8V TO 3.3V)

2.10

Module Reset

There are several ways to Reset the module:

• A Power-on Reset (POR) is generated

automatically when power is applied. This Reset is

intended to initialize the module when a new

battery is connected

• Perform an external POR by pulling the RESET

pin low

• Perform a soft POR using software commands

• A Reset can be triggered by a critical event, such

as a brown-out, which is generated if the supply

voltage drops below the minimum operating

voltage

2.10.1

BROWN-OUT DETECTION

The RN1723 includes a brown-out detector that holds

the module in Reset if the battery voltage falls below

the minimum operating voltage.

SREG_3V3_CTRL (48)

Battery

1.8V to 3.7V

VBATT (49)

VDD (10, 34)

Siliconix

Si2312DS

20 µF

1 µH

RN1723

Note:

If the RN1723 module is used in battery

applications, it is highly recommended

that a voltage supervisory device be

employed.

RN1723 Datasheet(PDF) 14 Page - Microchip Technology