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- P.16-
Himax Confidential
This information contained herein is the exclusive property of Himax and shall not be distributed, reproduced, or disclosed
in whole or in part without prior written permission of Himax.
January, 2015
HX8394-F
720RGBx1280dots, TFT Mobile Single Chip Driver
Temporary DATA SHEET V01
PCCS[1:0]=00, 01 and 11, VDD3 range is 2.5V ~6.5V.
VSSA P 16
Power
supply
Analoge ground. VSSA=0V. When using the COG method, connect to
VSSD on the FPC to prevent noise.
VSSAC P 4
Power
supply
Analoge ground. It must be connected to VSSA on the FPC.
VSSD P 46
Power
supply
Ground for the internal logic. VSSD=0V. When using the COG method,
connect to VSSA on the FPC to prevent noise.
VPP
6
Power
supply
External high voltage pin used in OTP mode and operates at 8.25V.
If not used, let it open.
VSP I 7
Stabilizing
capacitor
Input voltage generated from HX5186-C, PFM or external power IC.
VSP range is 4.3V to 6.5V. It must be connected to a stabilizing capactor
between VSP and VSSA.
VSN I 7
Stabilizing
capacitor
Input voltage generated from HX5186-C, PFM or external power IC.
VSP range is -4.3V to -6.5V. It must be connected to a stabilizing capactor
between VSN and VSSA.
Output pins of power and reference voltage
PCCS1 ~ PCCS0
I 4
VSSD /
VDD1
Select the VSP/VSN pumping method as listed below:
PCCS
[1:0]
Power
mode
Input
Power
VSP VSN
VGH/
VGL
00
External
VSP+VSN+
VGH+VGL
VDD1 External External External
01
PFM-D
(External
VSP)
VDD1 External
Internal
PFM
Internal
DC/DC
10
HX5186 or
PFM-A or
PFM-C
VDD3
VDD1
Internal
PFM or
HX5186
Internal
PFM or
HX5186
Internal
DC/DC
11
External
VSP+VSN
VDD1 External External
Internal
DC/DC
PCCS[1:0] must be connected to VSSD (logic=0) or VDD1(logic=1).
Note: For External Power Mode(PCCS[1:0]=00,01 and 11), VDD3 is not
needed. Please let VDD3 open or connect it to VSP.
VCL I 5
Stabilizing
capacitor
Output voltage from the set-up circuit. (-VDD3 or -2.5~-3.1V)
It is generated from VDD3.
It must be connected a stabilizing capacitor 1.0uF to VSSA.
VSPR O 3
Stabilizing
capacitor
Positive regulated voltage output for Gamma. (3.1V to VSP - 0.3)
VSNR O 3
Stabilizing
capacitor
Negative regulated voltage output for Gamma. (-3.1V to VSN + 0.3)
VDDD O 25
Stabilizing
capacitor
Internal logic voltage output.
It must be connected a stabilizing capacitor 2.2uF to VSSA.
VGH O 6
Stabilizing
capacitor
Output voltage from the step-up circuit, it is generated from VSP and VSN.
Connect to a stabilizing capacitor 1uF between VSSA and VGH.
VGL O 13
Stabilizing
capacitor
Output voltage from the step-up circuit, it is generated from VSP and VSN.
Connect to a stabilizing capacitor 1uF between VSSA and VGL. Place a
schottkey barrier diode between VSSA and VGL.
VCOM O 6
Stabilizing
capacitor
The power supply of common voltage in DC com driving. The voltage
range is -4V to -0.3V. It must be connected to a stabilizing capacitor 2.2uF
to VSSA.
VREF O 3
Stabilizing
capacitor
Internal reference voltage.
DC/DC pumping
C21P, C21N
C22P, C22N
I/O
14
14
Step-up
Capacitor
Connect to the step-up capacitors according to the DC/DC pumping factor
for pumping VGH voltage.
C31P, C31N I/O 14
Step-up
Capacitor
Connect to the step-up capacitors according to the DC/DC pumping factor
for pumping tVGL voltage.
C41P, C41N I/O 14
Step-up
Capacitor
Connect to the step-up capacitors according to the DC/DC pumping factor
for pumping the VCL voltage.
VCSW1, VCSW2
I 16 -
VCSW1 and VCSW2 should be connected to HX5186-C for HX5186-C
mode.
CABC & ABC
CABC_PWM_OUT
O 4 Led driver
Backlight on/off control pin. If CABC function is used, the pin can be