HT46R64 Holtek Semiconductor Inc., HT46R64 Datasheet - Page 26

• Manufacturer Part Number: HT46R64
• Description: Ht46r64/ht46c64 -- A/d With Lcd Type 8-bit Mcu
• Manufacturer: Holtek Semiconductor Inc.

Note:
LCD Segments as Logical Output
The SEG0~SEG23 also can be optioned as logical output, once an LCD segment is optioned as a logical output, the
content of bit0 of the related segment address in LCD RAM will appear on the segment.
SEG0~SEG7 is together byte optioned as logical output, SEG8~SEG15 are bit individually optioned as logical outputs.
Rev. 1.80
V
1/3 Bias
1/2 Bias
MAX
LCD Bias Type
Condition
LCD Type
The 52-pin QFP package does not support the charge pump (C type bias) of the LCD. The LCD bias type must
select the R type by option.
(VLCD/4.5) 15 A
(VLCD/3) 15 A
If V
else V
1/2 bias
DD
>V
MAX
Low Bias Current (Typ.)
LCD Driver Output (1/3 Duty, 1/2 Bias, R/C Type)
LCD
connect to V
R Type
, then V
1/3 bias
MAX
²R² Type Bias Current
LCD
connect to V
26
1/2 bias
DD,
Option
(VLCD/4.5) 45 A
(VLCD/3) 45 A
If V
else V
DD
MAX
>
High Bias Current (Typ.)
3
2
V
connect to V1
C Type
LCD
HT46R64/HT46C64
, then V
1/3 bias
MAX
February 14, 2006
connect to V
DD
,