HT0324A Tomato LSI, Inc., HT0324A Datasheet - Page 39

• Manufacturer Part Number: HT0324A
• Description: 65COM / 132SEG DRIVER & CONTROLLER FOR STN LCD
• Manufacturer: Tomato LSI, Inc.

HT0324A
TOMATO LSI Inc.
7-8. Set column address
Sets the column address of DDRAM from the MPU into the column address register. Along with the
column address, the column address defines the address of the DDRAM to write or read display data.
When the MPU reads or writes display data to or from DDRAM, column addresses are automatically
increased.
Set column address MSB
Set column address LSB
7-9. ADC select
Changes the relationship between DDRAM column address and segment driver. The direction of segment
driver output pin can be reversed by software. This makes IC layout flexible in LCD module assembly.
ADC = 0: normal direction (SEG0
ADC = 1: reverse direction (SEG131
7-10. Reverse display ON / OFF
Reverses the display status on LCD panel without rewriting the contents of the DDRAM.
RS
RS
RS
RS
Y7
0
0
0
0
1
1
0
0
1(Reversed)
:
0(Normal)
REV
RW
RW
RW
RW
Y6
0
0
0
0
0
0
0
0
:
65COM / 132SEG DRIVER & CONTROLLER FOR STN LCD
DB7
DB7
DB7
DB7
Y5
0
0
1
1
0
0
0
0
:
Liquid crystal pixel is not illuminated
39
Liquid crystal pixel is illuminated
RAM bit data = “1”
DB6
DB6
DB6
DB6
Y4
0
0
0
0
0
0
0
0
:
SEG131)
SEG0)
DB5
DB5
DB5
DB5
Y3
0
0
1
1
0
0
0
0
:
DB4
DB4
DB4
DB4
Y2
1
0
0
0
0
0
0
0
:
DB3
DB3
DB3
DB3
Y7
Y3
Y1
0
0
0
1
1
0
Liquid crystal pixel is not illuminated
Liquid crystal pixel is illuminated
RAM bit data = “0”
DB2
DB2
DB2
DB2
Y6
Y2
Y0
0
1
0
1
0
1
Ver 0.0
Column address
DB1
DB1
DB1
DB1
Y5
Y1
0
1
130
131
0
1
:
DB0
DB0
DB0
ADC
DB0
REV
Y4
Y0