WI.232FHSS-250-R datasheet(41/67 Pages) RADIOMETRIX

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WI.232FHSS-25-R/ WI.232FHSS-250-R DATASHEET

Revision 1.1.0

4.1.12. Operating Mode (regOPMODE)

regNVOPMODE (0x0D)

regOPMODE (0x58)

R/W

Default Operating mode: Awake (0x00)

Changing this register will place the register in the operating modes indicated in the table below. If the

module remains properly powered, and is awakened from Sleep, Standby, or Deep Sleep properly, the

volatile registers retain their values when awakened.

Awake mode is the normal operating mode. This is the only mode in which the RF circuitry is able to

receive and transmit RF messages.

Sleep and Standby are modes intended for legacy Wi.232DTS™ developers. Because the Wi.232FHSS-

25/250-R modules do not include the hardware to properly implement these two modes, current

consumption is much higher than in the Wi.233DTS™. For this reason, use of these two modes is not

recommended for new development. Standby leaves the RF oscillator circuit operating for faster wakeup,

whereas Sleep does not. In order to wake the module from these two modes, send one byte of 0x0F to the

module’s RxD pin (CMD left high) at the current baud rate. If regACKONWAKE is enabled (default), the

module will transmit a 0x06 byte through the TxD pin when the module is awake and ready to accept data

or commands.

Deep Sleep mode disables all circuitry on-board the module. This is the lowest-power mode available for

the module. When in Deep Sleep, the CTS pin is brought low, and both RF and microcontroller oscillators

are stopped. In order to wake the module, a negative-going pulse on the C2CK/RST pin of at least 15μs is

required. The module will begin the wake process once the C2CK/RST pin is returned high. If this line

experiences digital noise or glitching, it can cause multiple triggers (wake from sleep, hardware reset,

hardware reset, etc.). Multiple triggers can cause the reloading of volatile registers with their non-volatile

values. If your circuit introduces noise onto this pin, it should be filtered or bypassed with a capacitor to

ground or an RC filter.

If the volatile registers have been corrupted during sleep/standby/deep sleep, a software reset is forced

and the module will reboot. Possible causes of this are power surges or brownout. The module will

display the startup message (if not disabled in regNVSHOWVER), and send a 0x06 byte out the UART

TxD pin (if not disabled in regNVACKONWAKE) when the module is ready to accept commands and data.

Operating Mode

Awake

Sleep

Standby

Deep Sleep

Table 17, Operating Mode Register Settings

WI.232FHSS-250-R 数据表(PDF) 41 Page - Radiometrix Ltd

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