BC2102 datasheet(7/15 Pages) HOLTEK

Part #	BC2102

Description	Sub-1GHz OOK/FSK Transmitter

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Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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7 / 15 page

Rev. 1.00

7

December 21, 2016

BC2102

I2C Mode

IfthedeviceisconnectedtoanexternalMCU,then

theI2Cmodecanbeused.WhentheSCLline(Pin5)

ispulledlowformorethan16μs(tENI2C),thedevice

willentertheI2CModefromtheNormalMode,dur-

ingwhichtheexternalcontrolregistercanconfigure

thespecialfunctionregistersinthedeviceusingI2C

commands.WhenthedevicereceivesacorrectI2C

STOPsignalfollowedbytheSCLlinebeingpulled

lowformorethan16μs,thedevicewillreturntothe

NormalMode.

IntheI2CMode,theMCUcanconfiguretheinternal

relevantregistersusingI2Cserialprogramming.The

transmitteronlysupportstheI2Cformatforbyte

write,pagewrite,bytereadandpagereadformat.The

transmissionprocedureisshownasbelow.

Symboldefinition:

• S:Startsymbol

• RS:RepeatStart

• P:Stopsymbol

• DADDR[6:0]:deviceaddress,21h

• R/W:readwriteselect,R(0):write,(1):read

• RADDR[7:0]:registeraddress

• ACK:A(0):ACK,NA(1):NAK

• BusDirection:

hosttodevice:

devicetohost:

I2C Serial Programming

Normal Mode into I2C Mode

I2C Mode Terminate

I2C

Start Condition

ACK

I2C

Stop Condition

>16μS

tENI2C

tEXI2C

>16μS

PCLK/SCL

DIN/SDA

I2C Serial Programming

S

DADDR[6:0]

W A

RADDR[7:0]

A

DATA

A P

Byte Write

S

DADDR[6:0]

W A

RADDR[7:0]

A

DATA

A

P

Page Write

DATA(n+1)

A

DATA(n+x)

A

S

DADDR[6:0]

W A

RADDR[7:0]

A

DADDR[6:0]

P

Byte Read

A

DATA

RS

R

NA

S

DADDR[6:0]

W A

RADDR[7:0]

A

Page Read

DADDR[6:0]

A

DATA(n)

RS

R

A

DATA(n+1)

A

DATA(n+x)

P

NA

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