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PDF RA8870 Data sheet ( Hoja de datos )

Número de pieza RA8870
Descripción Character/Graphic TFT LCD Controller
Fabricantes RAIO Technology　
Logotipo RAIO Technology Logotipo



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No Preview Available ! RA8870 Hoja de datos, Descripción, Manual

RAiO
RA8870
Character/Graphic
TFT LCD Controller
Specification
Version 1.0
April 30, 2010
RAiO Technology Inc.
©Copyright RAiO Technology Inc. 2010
RAiO TECHNOLOGY INC.
1/174
www.raio.com.tw

1 page




RA8870 pdf
Version 1.0 Preliminary
RA8870
Character / Graphic TFT LCD Controller
7-7-2-9 Color Expansion ......................................................................................................108
7-7-2-10 Move BTE with Color Expansion .............................................................................108
7-7-3 BTE Access Memory Method ............................................................................................109
7-7-3-1 Block Memory Access .............................................................................................109
7-7-3-2 Linear Memory Access ............................................................................................109
7-7-4 BTE Function Explaination................................................................................................ 110
7-7-4-1 Write BTE with ROP ................................................................................................ 110
7-7-4-2 Read BTE (Burst Read like function)....................................................................... 112
7-7-4-3 Move BTE in Positive Direction with ROP............................................................... 113
7-7-4-4 Move BTE in Negative Direction with ROP ............................................................. 115
7-7-4-5 Transparent Write BTE ............................................................................................ 117
7-7-4-6 Transparent Move BTE Positive Direction............................................................... 119
7-7-4-7 Pattern Fill with ROP ...............................................................................................120
7-7-4-8 Pattern Fill with Transparency .................................................................................122
7-7-4-9 Color Expansion ......................................................................................................124
7-7-4-10 Color Expansion with Transparency ........................................................................127
7-7-4-11 Move BTE with Color Expansion .............................................................................129
7-7-4-12 Move BTE with Color Expansion and Transparency ...............................................131
7-7-4-13 Solid Fill 132
7-8 Layer Mixed Function ...................................................................................... 133
7-8-1 Only Layer One is Visible ..................................................................................................134
7-8-2 Only Layer Two is Visible ..................................................................................................135
7-8-3 Transparent Mode ..............................................................................................................135
7-8-4 Lighten-Overlay Mode........................................................................................................136
7-8-5 Boolean OR......................................................................................................................... 136
7-8-6 Boolean AND....................................................................................................................... 136
7-8-7 Layer in Scroll Mode ..........................................................................................................137
7-9 Touch Panel Function ...................................................................................... 138
7-9-1 Auto Mode........................................................................................................................... 138
7-9-2 Manual Mode....................................................................................................................... 139
7-9-2-1 External Interrupt Mode ...........................................................................................140
7-9-2-2 Polling Mode ............................................................................................................142
7-9-3 Touch Panel Sampling Time Reference Table .................................................................144
7-10 PWM................................................................................................................. 145
7-11 Sleep Mode...................................................................................................... 147
8. AC/DC Characteristic ........................................................................... 148
8-1 Maximum Absolute Limit ................................................................................. 148
8-2 DC Characteristic ............................................................................................. 149
9. Package................................................................................................. 150
9-1 Pin Assignment ................................................................................................ 150
9-2 Package Outline ............................................................................................... 151
9-3 Product Number ............................................................................................... 151
10. Application Circuit.............................................................................. 152
11. Demo Program.................................................................................... 157
12. Summary of Register Table ............................................................... 165
RAiO TECHNOLOGY INC.
5/174
www.raio.com.tw

5 Page





RA8870 arduino
Version 1.0 Preliminary
RA8870
Character / Graphic TFT LCD Controller
4-4 External Memory
Pin Name
VA[18:0]
MD[15:0]
RAM_OE#
RAM_WR#
RAM_CS#
ROM_CS#
I/O Pin#
Pin Description
External RAM/ROM Address Bus
When external Font ROM is used, VA[18:0] is used as external
32~42, 512KB Font ROM address bus.
O
46~53
When external DDRAM is used, VA[18:0] are also used as RAM
address bus.
When internal DDRAM is used with no external Font ROM,
VA[18:0] should be kept as floating.
External RAM/ROM Data Bus
When external Font ROM is used, them are used as data bus input
signal, only MD[7:0] is used.
IO
16~31
When external DDRAM is used, them are also used as RAM R/W
data bus. 8-bit or 16-bit interface will be selected by register setting.
When internal DDRAM is used with no external Font ROM,
MD[15:0] are suggested to connected to VDD for preventing the IO
leakage.
O
56
RAM Data Output Enable Signal
Data output enable signal for external DDRAM.
O
55
RAM Write Enable Signal
Write strobe signal for external DDRAM.
O
54
RAM Chip Selection Signal
Chip select signal for external DDRAM.
O
57
ROM Chip Selection Signal
Chip select signal for external font ROM.
4-5 Clock and Power Interface
Pin Name
XI
XO
RST#
TEST[2:0]
VRIN
I/O Pin#
Pin Description
Crystal Input Pin
I
2
Input pin for internal crystal circuit. It should be connected to
external crystal to generate the source of PLL circuit. That will
generate the system clock for RA8870.
O
3
Crystal Output Pin
Output pin for internal crystal circuit.
Reset Signal Input
This active-low input performs a hardware reset on the RA8870. It
I 12 is a Schmitt-trigger input for enhanced noise immunity; however,
care should be taken to ensure that it is not triggered if the supply
voltage is lowered.
Test Mode Input
I 13~15 For chip test function, should be connected to GND for normal
operation.
DAC Reference Voltage Input
A 65 This is a reference voltage input to create VRH signal. For normal
operation, it only need add a 0.1uF capacitor to ground.
RAiO TECHNOLOGY INC.
11/174
www.raio.com.tw

11 Page







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