ra8835 Topway Display, ra8835 Datasheet - Page 78

• Manufacturer Part Number: ra8835
• Description: Dot Matrix Lcd Controller
• Manufacturer: Topway Display

RAiO TECHNOLOGY INC.
Version 1.7
Notes
1. SEL1, SEL2 and TEST are inputs. VA0 to VA15, (
2. D0 to D7, VD0 to VD7 are Bi-direction pins.
3.
5. VD0 to VD7 and D0 to D7 have internal feedback circuits so that if the inputs become high-
6. Because the oscillator circuit input bias current is in the order of
4. f
voltage
so as to reduce leakage currents.
200us. Note that pulses of more than a few seconds will cause DC voltages to be applied to the LCD
panel.
The operating supply current can be reduced by approximately 1mA by setting both CLO and the
display OFF.
impedance, the input state immediately prior to that is held. Because of the feedback circuit, input
current flow occurs when the inputs are in an intermediate state.
LP, WF, YDIS are outputs.
CS
OSC
,
= 10 MHz, no load (no display memory), internal character generator, 256x 2 00 pixel display.
RD
,
WR
, A0 and
RES
are Schmitt-trigger inputs. The pulse width on (
78/86
VRD
), (
VWR
μ
), (
A, design the printed circuit board
VCE
Dot Matrix LCD Controller
), YD, XD0 to XD3, XSCL,
RES
www.raio.com.tw
) must be at least
RA8835