KING BILLION ELECTRONICS CO., LTD
駿 億 電 子 股 份 有 限 公 司
HE83R126
HE80000 SERIES
2G LCD Charge Pump Circuit,1/5 Bias,1/8 Duty,3V Configulation
MaskOption Must Select 4 Times Charge Pump LCD Regulator Enable
LCD Display Range
Regulated Voltage Capacitor
Adjust resister for
tuning LV1 voltage,
And regulte LV1 voltage
LV1
LV2
LV3
LV4
C2
C4
C8
0.1u
0.1u
0.1u
at 0.75V, than the
4
times charge pump will
LCD PANEL
let LV4
= 4 * LV1 = 3V
8 * 24 ~ 8 * 32
LV1
C10 0.1u
VR1
100K~30%
LVF
Charge Pump Capacitor
LC1
LC2
Note
the same Lot.
: Fix resister for
C15
0.1U
J. Important Note
1. LCD driving circuit must be turn off before IC goes into sleep mode.
2. Please bonds the TSTP_P, RSTP_N and PRTD[7:0] with test point on PCB (can be soldered and
probed) as you can, then KB can do some IC testing job on PCB. Please connect TSTP_P pin with
zero ohm resistor(or copper wire which can be cut on PCB) normally for good ESD result. KB can
pull low TSTP_P pin by remove the zero ohm resistor . The following figure is an example
(Testing point with through hole).
Add zero Ohm resistor
to TSTP_P.
K. Updated Record
Version
Date Section
Original Content
New Content
Jul 2,
Preliminary1.02
I
Modify Application Circuit
2002
10
Preliminary V1.02E
KB [ King blillion Electronics Co.,Ltd. ]
