4524 Datasheet, PDF (58/161 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4524 Group
VLC3/SEG0 VLC1/SEG2
COM3 COM1
COM2 COM0
VLC2/
SEG1
r
r
SEG0 to SEG2
r
output
r
Multiplexer
r
r
Control
signal
Common driver
Bias control
Decoder
1/2,1/3,1/4 counter
LCD clock
(from timer block)
L13 L12 L11 L10
LCD
ON/OFF
control
L23 L22 L21 L20
Register A
Fig. 43 LCD controller/driver
SEG3 to SEG19
.........
... ^Segment
Segment
driver
driver
Selector ^... Selector
RAM ^... RAM
Rev.2.00 Jul 27, 2004 page 58 of 159
REJ03B0091-0200Z