參數(shù)資料
型號(hào)： S1C88848D0A0100
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.2 MHz, MICROCONTROLLER, UUC192
封裝： DIE-192
文件頁數(shù)： 172/174頁
文件大小： 1304K
代理商： S1C88848D0A0100
S1C88848 TECHNICAL MANUAL
EPSON
89
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (LCD Controller)
5.11.2 Mask option
LCD drive duty
■
■ 1/32 & 1/16 duty
■
■ 1/17 duty
■
■ 1/8 duty
SEG40–SEG50 port specifications
SEG40 ..... ■
■ DC output
■
■ SEG output
SEG41 ..... ■
■ DC output
■
■ SEG output
SEG42 ..... ■
■ DC output
■
■ SEG output
SEG43 ..... ■
■ DC output
■
■ SEG output
SEG44 ..... ■
■ DC output
■
■ SEG output
SEG45 ..... ■
■ DC output
■
■ SEG output
SEG46 ..... ■
■ DC output
■
■ SEG output
SEG47 ..... ■
■ DC output
■
■ SEG output
SEG48 ..... ■
■ DC output
■
■ SEG output
SEG49 ..... ■
■ DC output
■
■ SEG output
SEG50 ..... ■
■ DC output
■
■ SEG output
LCD power supply
■
■ Internal power supply TYPE A
(VC2 standard, 1/5 bias, 4.5 V)
■
■ Internal power supply TYPE B
(VC2 standard, 1/5 bias, 5.5 V)
■
■ Internal power supply TYPE D
(VC1 standard, 1/4 bias, 4.5 V)
■
■ External power supply
■ LCD drive duty
The drive duty for the built-in LCD driver can be
selected from software switchable between 1/32
and 1/16, fixed at 1/17 and fixed at 1/8 by mask
option.
When "1/32 & 1/16 duty" is selected, the drive
duty can be selected by software. When "0" is
written to the drive duty selection register LDUTY,
1/32 duty is selected and when "1" is written, 1/16
duty is selected.
When "1/17 duty" or "1/8 duty" is selected, the
drive duty is fixed at 1/17 or 1/8, and setting of
LDUTY becomes invalid.
When the built-in LCD driver is not used, select the
default setting of "1/32 & 1/16 duty".
■ SEG40–SEG50 port specifications
The SEG40 to SEG50 ports can be configured as
LCD segment output ports or general-purpose
output ports. Refer to Section 5.5, "Output Ports (R
ports)", for details of the DC output.
■ LCD power supply
Either the internal power supply (built-in LCD
system voltage regulator and voltage booster/
reducer) or an external power supply can be
selected by mask option to generate the LCD
system drive voltages VC1–VC5.
Furthermore, the internal power supply can be
selected from among three types, TYPE A, TYPE B
and TYPE D, according to the LCD panel
characteristics.
The internal power supply is designed for a small
scale LCD panel and is not suitable for driving a
panel that has large size pixels or for driving a large
capacity panel using an external expanded LCD
driver. In this case, select external power supply
and input the regulated voltage from outside the
IC.
Note that the LCD must be driven with 1/5 bias
when external power supply is selected.
Figure 5.11.2.1 shows the circuit examples when
using an external power supply.
VC5
VC4
VC3
VC2
VC1
Rxx
VSS
VIN
VC5
VC4
VC3
VC2
VC1
VSS
VIN *
*
VSS level or high impedance when LCD is not driven.
Fig. 5.11.2.1 Circuit examples when using
an external power supply
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