ra8816 RAIO Technology Inc., ra8816 Datasheet - Page 41

• Manufacturer Part Number: ra8816
• Description: 144x65 Character/graphic Lcd Driver
• Manufacturer: RAIO Technology Inc.

Preliminary Version 1.6
RAiO TECHNOLOGY INC.
6-8 EL Signals
The RA8816 provides two special signals for EL driver circuit. The signals active time can also setup
by register ELCR. The waveform and application are show as Figure 6-31 and 6-32.
EL_DCHG
EL_CHRG
≒24 us
EL_CHRG
EL_DCHG
EL應用電路
≒ 700 us
Figure 6-31: Control Signals for EL Driver
充電
放電
+3V
3V
≒3us
R1=2K
Figure 6-32: EL Driver Circuit
R2=2K
L1=3MH
41/68
3904
Q1
≒ 700 us
1N4148
D1
R3
2K
144x65 Character/Graphic LCD Driver
3904
Q2
≒24 us
EL
≒3us
www.raio.com.tw
RA8816