RFM95 datasheet(19/121 Pages) HOPE

部件名	RFM95

功能描述	Low Power Long Range Transceiver Module

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制造商	HOPE [HOPE Microelectronics CO., Ltd.]

网页	https://www.hoperf.com/

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Page 19

RFM95/96/97/98(W)

Tel: + 86-755-82973805

Fax: + 86-755-82973550

E-mail: sales@hoperf.com http:/ / www.hoperf.com

WIRELESS & SENSING

PRELIMINARY

DATASHEET

2.4.6. Digital Specification

Conditions: Temp = 25° C, VDD = 3.3 V, FXOSC = 32 MHz, unless otherwise specified.

Table 57 Digital Specification

Symbol

Description

Conditions

Min

Typ

Max

Unit

VIH

Digital input level high

0.8

-

VDD

VIL

Digital input level low

-

0.2

VDD

VOH

Digital output level high

Imax = 1 mA

0.9

-

VDD

VOL

Digital output level low

Imax = -1 mA

-

0.1

VDD

FSCK

SCK frequency

-

10

MHz

tch

SCK high time

50

-

ns

tcl

SCK low time

50

-

ns

trise

SCK rise time

-

5

-

ns

tfall

SCK fall time

-

5

-

ns

tsetup

MOSI setup time

From MOSI change to SCK rising

edge.

30

-

ns

thold

MOSI hold time

From SCK rising edge to MOSI

change.

20

-

ns

tnsetup

NSS setup time

From NSS falling edge to SCK rising

edge.

30

-

ns

tnhold

NSS hold time

From SCK falling edge to NSS rising

edge, normal mode.

100

-

ns

tnhigh

NSS high time between SPI

accesses

20

-

ns

T_DATA

DATA hold and setup time

250

-

ns

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