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參數(shù)資料
| 型號： | S-4561A |
| 元件分類： | 顯示控制器 |
| 英文描述： | 16 X 60 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC166 |
| 封裝： | 7.65 X 2 MM, DIE-166 |
| 文件頁數(shù)： | 6/48頁 |
| 文件大?。?/td> | 427K |
| 代理商： | S-4561A |
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LCD Controller-Driver
S-4561A
14
Seiko Instruments Inc.
9. Cursor Blink Controller
Controls the cursor display as well as the blink display (Character Blink Display). Displays and blinks the character indicated
by the DDRAM address counter. To change the cursor or blink display position, execute the DDRAM SETTING ADDRESS
command or the DATA WRITE command. The cursor display and the blink display positions are not changed by executing
8th line of the character font of a 5-bit length, and with the logic sum of the CGROM character patterns. The blink display
comes in four types and can be set by the BLINK SELECT command. Refer to “Instruction Description” (page 25 of this
specification).
10. CR Oscillating Circuit
Generates a basic clock that serves as display timing.
The oscillating frequency can be reduced to fosc=approx. 34 kHz via an oscillating resistor (Rf=500 k
).
By inputting the external clock in OSC1, operation through the external clock is possible. In this case, set OSC2 to “Open.”
11. LCD Driver
Has 16 common output pins, two ICON common output pins, and 60 segment output pins for driving the LCD, and generates
2-frame AC drive waveform (type B). Two ICON common output pins, each of which is configured orgthogonally to the chip,
generate the drive waveform at the same timing. The ICON display can be configured over and under the top and the
bottom of the LCD panel. When the ICON display is in no use, set the icon common output pin to “Open.”
12. LCD Power Supply Circuit
Consists of a doubler, an LCD voltage controller, an LCD bias resistor, and a voltage follower. The LCD voltage controller
consists of a voltage regulator and an LCD voltage command fine adjustment circuit. The LCD power supply circuit can be
controlled by pins FNC1 and 2 and BIAS SELECT command. For power supply, an internal type for the booster, voltage
regulator and LCD voltage adjustment circuit or any external type can be switched by setting pins FNC1 or 2.
All of internal LCD power supplies will be automatically turned OFF by setting FNC1 to “H”, and FNC2 to “L.”
Because of this, the LCD bias voltage produced via the externally-divided resistor can be supplied to pins VLCD,
and V1 to V4.
Table 14 LCD Power Supply Circuit
FNC
1
FNC
2
Doubler
LCD Voltage
Adjustment
Circuit
LCD Bias
Resistor
Voltage
Follower
Remarks
H
L
H
L
H
L
{
×
{
×
{
×
{
×
{
Use all internal LCD power supply circuits.
Use an external bias resistance.
Setting is not needed.
Externally generates and inputs VLCD.
Remarks
R Always connect FNC1 and 2 to VDD or VSS.
R Externally-connected pins VOUT, VLCD and V1 through V4 cannot be used as a drive power supply of other
circuits.
R Connecting the power supply externally with the internal LCD power supply circuit ON may lead to a
breakdown of the IC.
Duty
Rf
fosc
Frame Frequency
1/17 Duty
500 k
34 kHz
76.9 Hz
{: Valid
× : Invalid
Frame Frequency
fosc
2
×13×17
[Hz]
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