LLCC68 datasheet(48/106 Pages) SEMTECH

tên linh kiện	LLCC68

Giải thích chi tiết về linh kiện	Long Range, Low Power, sub-GHz RF Transceiver

PDF	106 Pages

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nhà sản xuất	SEMTECH [Semtech Corporation]

Trang chủ	http://www.semtech.com

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48 / 106 page

LLCC68

Data Sheet

Rev. 1.0

DS.LLCC68.W.APP

July 2019

48 of 106

Semtech

www.semtech.com

In addition to this, the BUSY will also go high to handle its internal IRQ. In this scenario, it is essential to wait for the BUSY

line to go low before sending an SPI command (either a “read” or “write” command).

Figure 8-4: Switching Time Definition in Active Mode

The following table gives the value of TSWMode for all possible transitions. The switching time is defined as the time

between the rising edge of the NSS ending the SPI transaction and the falling edge of BUSY.

Table 8-2: Switching Time

Transition

TSWMode Typical Value [s]

SLEEP to STBY_RC cold start (no data retention)

3500

SLEEP to STBY_RC warm start (with data retention)

340

STBY_RC to STBY_XOSC

STBY_RC to FS

STBY_RC to RX

STBY_RC to TX

126

STBY_XOSC to FS

STBY_XOSC to TX

105

STBY_XOSC to RX

FS to RX

FS to TX

RX to FS

RX to TX

BUSY

NSS

SPI

(MOSI, MISO, SCK)

opcode

Param1

Param…

Mode

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