THL3512 Datasheet, PDF (9/16 Pages) THine Electronics, Inc. – The THL3512 is an LED driver with 24 channel opendrain

THL3512_Rev.1.02_E
Serial Interface Connection
THL3512 is protocol compatible with LED drivers series of opendrain outputs and constant current outputs so that can
be mixed in cascade and multidrop connection scheme .(Please note that multiple LVDS outputs can not be connected to
each other.)
*LED drivers series of opendrain outputs and constant current outputs are referred to collectively as THL35XX hereaf-
ter.
Cascade Connection by 2-pair serial LVDS
The THL35XX can convert 3-wire serial output from the host such as micro-controller or CPU to 2-pair serial LVDS,
which is connected to the 2-pair serial LVDS input of a following device in a point-to-point topology. As for the maxi-
mum number of devices to be cascaded, please refer to an application note.
Host
3-wire serial
CSn
SCK
SI
2-pair serial LVDS
2-pair serial LVDS
SCL
THL35XX
THL35XX
THL35XX
SDA
MODE pin=High
MODE pin=Low
MODE pin=Low
Multidrop Connection by 2-pair serial LVDS
The THL35XX can convert 3-wire serial output from the host such as micro-controller or CPU to 2-pair serial LVDS,
which is connected to the 2-pair serial LVDS input of following multiple devices in a multidrop topology. As for the
maximum number to devices to be multidropped, please refer to an application note.
Host
3-wire serial
CSn
SCK
SI
2-pair serial LVDS
SCL
THL35XX
SDA
MODE pin=High
THL35XX
THL35XX
MODE pin=Low
MODE pin=Low
Multidrop Connection by 3-wire serial
3-wire serial output from the host such as micro-controller or CPU to 2-pair serial LVDS is connected to following mul-
tiple devices in a multidrop topology.
Host
CSn
SCK
SI
3-wire serial
THL35XX
THL35XX
MODE pin=High
MODE pin=High
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