HD66523 Datasheet, PDF (10/19 Pages) Hitachi Semiconductor – (240-Channel Common Driver with Internal LCD Timing Circuit)

HD66523
Example of System Configuration (1)
Figure 7 shows system configuration for a 240 * 160 dots LCD panel using segment driver HD66522 with
internal bit-mapped RAM. All required functions can be prepared for liquid crystal display with just two
LSIs except for liquid crystal display power supply circuit functions.
SEG1
SEG2
240
LCD
SEG159
SEG160 Scanning direction
X1 to X240
FLM,CL1,
4 _{FX1, FX0}
1 _DOC
LCD drivers
DOC
DISPOFF
CR
HD66523
LCD timing generator
R
C
DUTY SHL M/S
BP4 to BP0
5
1 ^RESET
V_CC
17
8
3
A0 ~ A16
DB0 ~ DB7
CS,WE,OE
VCH, VM, VCL, VLCD, V_EE ^{VRH, VM, VRL, VLCD, VEE}
1
DISPOFF
Power supply circuit
Figure 7 System Configuration (1)
1111