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PDF RA8820 Data sheet ( Hoja de datos )
| Número de pieza | RA8820 | |
| Descripción | (RA8802 / RA8820) Character/Graphic LCD-Controller Specification | |
| Fabricantes | RAIO Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RA8820 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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Version 1.1
RA8802/8820
Character/Graphic LCD Controller
www.DataSheet4U.com
RAiO
RA8802/8820
Character/Graphic
LCD-Controller
Specification
Version 1.1
April 26, 2004
RAiO Technology Inc.
Copyright RAiO Technology Inc. 2003
RAiO TECHNOLOGY INC.
1/7
www.raio.com.tw
1 page  
Version 1.1
RA8802/8820
Character/Graphic LCD Controller
LD5
SYS_FQ
LD4
www.DataSheet4U.com
LD3
SYS_LD
LD2
SYS_PLR
LD1
OPM1
LD0
OPM0
Alternative function pin LD5/SYS_FQ.
It’s connected to LCD driver IC D5, when 8-bit LCD driver IC is used.
I/O SYS_FQ is for RA8802/8820 clock source selection. Non-Pull will enable
internal PLL circuit and X’tal will be the clock source of RA8802/8820. Pull
low when RC oscillator is used and it will disable internal PLL.
LD4
I/O
It’s connected to LCD driver IC D4. When 8 bit LCD driver IC is used.
Alternative function pin LD3/SYS_LD.
This pin is connected to D3 pin of LCD driver IC.
I/O
SYS_LD is for LCD driver data bus selection. Non-Pull when 8-bit LCD
driver is used. Pull low when 4-bit LCD driver is used.
It’s connected to LCD driver IC D2.
SYS_PLR is polarity select. It’s connected to LCD driver IC D2.
SYS_PLR is for RS polarity selection.
I/O When Non-Pull, then “RS” = 0 means Register Access Cycle, and “RS” =
1 means Data Access Cycle.
When Pull Low, then “RS” = 1 means Register Access Cycle, and “RS” =
0 means Data Access Cycle.
Alternative function pin LD1/OPM1.
I/O It’s connected to LCD driver IC D1.
OPM1 and OPM0 are used to choose the test model of RA8802/8820. Do
not Pull-Low for this pin.
Alternative function pin LD0/OPM0.
I/O It’s connected to LCD driver IC D0.
OPM1 and OPM0 are used to choose the test model of RA8802/8820. Do
not Pull-Low for this pin.
4.3 Clock Interface
Pin Name
I/O
XA I
XB O
LPF I
RA I
Description
Oscillator Input.
This is the input signal of internal oscillator. Normally it connects to a
32768Hz X’tal. The XA, XB and LPF are used for X’tal and internal PLL.
If in RC_OSC mode, then XA, XB and LPF should be Floating.
Oscillator Output.
This is the output signal of internal oscillator. Normally it connects to a
32768Hz X’tal.
LPF (Low Pass Filter) Input.
This input is used for internal PLL circuit.
Connect Resistance.
RAiO TECHNOLOGY INC.
5/7
www.raio.com.tw
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet RA8820.PDF ] | |
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