HT45B0F datasheet(19/23 Pages) HOLTEK

Part #	HT45B0F

Description	SPI-to-UART Bridge

PDF	23 Pages

Scroll/Zoom	100%

Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

Logo

19 / 23 page

Application Circuit

HT45B0F

Rev. 1.00

June 7, 2011

S C K

S D O

S D I

S C S

I N T

O S C 2

O S C 1

S C K

S D O

S D I

S C S

I N T

R X

T X

R O U T

T I N

T o / F r o m R S 2 3 2 B u s

R S 2 3 2

T r a n s c e i v e r

H T 4 5 B 0 F

H o s t M C U

C L K I

C l o c k O u t p u t

nored.

For a UART wake-up interrupt to occur, in addition to the

bits for the wake-up enable control and Receive inter-

rupt enable control being set, the global interrupt enable

control and the related interrupt enable control bits must

also be set. If these two bits are not set, then only a

wake-up event will occur and no interrupt will be ser-

viced. Note also that as it takes a period of delay after a

wake-up before normal microcontroller resumes, the

relevant UART interrupt will not be serviced until this pe-

riod of delay time has elapsed.

HT45B0F Datasheet(PDF) 19 Page - Holtek Semiconductor Inc