RN1723 datasheet(12/32 Pages) MICROCHIP

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RN1723

DS70005224A-page 12

 2015 Microchip Technology Inc.

2.7

General Purpose Input/Output

(GPIO) Pins

The RN1723 module has 14 GPIO (GPIO1 through

GPIO14) pins that can be commanded by ASCII com-

mands. GPIO10 through GPIO14 pins have secondary

functions for the UART (TX, RX, CTS, and RTS), while

others can control connection modes, LEDs, etc.

Refer to the “WiFly Command Reference, Advanced

Features

and

Applications

User's

Guide”

(DS50002230) for information on configuring and

controlling the module.

2.8

Flash Voltage Supply

The FLASH_POWER pin on the RN1723 module is

used to power the internal Flash memory of the mod-

ule. However, it can also supply other external compo-

nents, up to a limit of 25 mA total current. When the

RN1723 is in Sleep mode, it does not drive this supply.

2.9

Power Management

The module supports an ultra-low power Sleep state,

from which it can wake for a range of detected reasons.

It transitions from sleep to CPU active in 1.7 ms, and

from CPU active to network connection in less than 35

ms (typical). The RN1723 also supports a Doze state

that provides an instant transition from Sleep to a Wake

state.

2.9.1

FORCE AWAKE

The RN1723 module may be forced awake by assert-

ing the FORCE_AWAKE pin for at least 245 ms. If the

FORCE_AWAKE pin remains asserted, the module is

prevented from sleeping or dozing.

2.9.2

POWER SUPPLY

The RN1723 module is designed to operate with a wide

range of batteries, as well as a linear power supply.

A power source that supplies a constant voltage

greater than 3.0V can drive the module directly, as

shown in Figure 2-3.

FIGURE 2-3:

POWER SUPPLY FOR BATTERY (3.0V TO 3.7V)

SREG_3V3_CTRL (48)

Battery

3.0V to 3.7V

VBATT (49)

VDD (10, 34)

RN1723

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