HD6473887 Datasheet, PDF (361/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

• A or B waveform selectable by software
13.1.2 Block Diagram
Figure 13-1 shows a block diagram of the LCD controller/driver.
ø/2 to ø/256
ø_w
V0
LCD drive power supply
V1
(built-in step-up constant-
V2
M
voltage circuit)
V3
VSS
CL2
Common
data latch
Common
driver
COM1
COM4
LPCR
LCR
LCR2
Display timing generator
CL1
40-bit shift
register
Segment
driver
SEG40/CL1
SEG39/CL2
SEG38/DO
SEG37/M
SEG36
LCD RAM
(20 bytes)
SEGn, DO
Notation:
LPCR: LCD port control register
LCR: LCD control register
LCR2: LCD control register 2
Figure 13-1 Block Diagram of LCD Controller/Driver
SEG1
344