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PDF SED1335 Data sheet ( Hoja de datos )
| Número de pieza | SED1335 | |
| Descripción | LCD Controller ICs | |
| Fabricantes | Epson Company | |
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MF1167-01
SED 1335 SeriesLCD
Controller
ICs
Technical
Manual
1 page  
CONTENTS
12. DISPLAY MEMORY INTERFACE ............................................................................................................................. 62
12.1. Static RAM ....................................................................................................................................................... 62
12.2. Supply Current during Display Memory Access ............................................................................................... 63
13. OSCILLATOR CIRCUIT ............................................................................................................................................ 63
14. STATUS FLAG .......................................................................................................................................................... 63
15. RESET ....................................................................................................................................................................... 65
16. APPLICATION NOTES ............................................................................................................................................. 65
16.1. Initialization Parameters ................................................................................................................................... 65
16.1.1. SYSTEM SET instruction and parameters ........................................................................................... 65
16.1.2. Initialization example ............................................................................................................................ 66
16.1.3. Display mode setting example 1: combining text and graphics .......................................................... 72
16.1.4. Display mode setting example 2: combining graphics and graphics .................................................. 73
16.1.5. Display mode setting example 3: combining three graphics layers .................................................... 75
16.2. System Overview ............................................................................................................................................. 76
16.3 System Interconnection ................................................................................................................................... 77
16.3.1. SED1335F ........................................................................................................................................... 77
16.4. Smooth Horizontal Scrolling ............................................................................................................................. 79
16.5. Layered Display Attributes ............................................................................................................................... 80
16.5.1. Inverse display ..................................................................................................................................... 80
16.5.2. Half-tone display .................................................................................................................................. 80
16.5.2.1. Menu pad display ................................................................................................................. 80
16.5.2.2. Graph display ....................................................................................................................... 81
16.5.3. Flashing areas ..................................................................................................................................... 81
16.5.3.1. Small area ............................................................................................................................ 81
16.5.3.2. Large area ............................................................................................................................ 81
16.6. 16 × 16-dot Graphic Display ............................................................................................................................. 81
16.6.1. Command usage .................................................................................................................................. 81
16.6.2. Kanji character display ......................................................................................................................... 81
17. INTERNAL CHARACTER GENERATOR FONT ....................................................................................................... 84
18. GLOSSARY OF TERMS ........................................................................................................................................... 85
Request for Information on SED1335 Series ................................................................................................................... 86
SED1335 Series
Technical Manual
EPSON
iii
5 Page 
PIN DESCRIPTION
Pin Name
A0
8080 family interface
A0 RD WR
001
101
010
110
Function
Function
Status flag read
Display data and cursor address read
Display data and parameter write
Command write
6800 family interface
A0 R/W
01
11
00
10
E
1
1
1
1
Function
Status flag read
Display data and cursor address read
Display data and parameter write
Command write
RD or E
WR or R/W
CS
RES
When the 8080 family interface is selected, this signal acts as the active-LOW read strobe. The
SED1335 series output buffers are enabled when this signal is active.
When the 6800 family interface is selected, this signal acts as the active-HIGH enable clock.
Data is read from or written to the SED1335 series when this clock goes HIGH.
When the 8080 family interface is selected, this signal acts as the active-LOW write strobe. The
bus data is latched on the rising edge of this signal.
When the 6800 family interface is selected, this signal acts as the read/write control signal. Data
is read from the SED1335 series if this signal is HIGH, and written to the SED1335 series if it
is LOW.
Chip select. This active-LOW input enables the SED1335 series. It is usually connected
to the output of an address decoder device that maps the SED1335 series into the memory
space of the controlling microprocessor.
This active-LOW input performs a hardware reset on the SED1335 series. It 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.
5.2.4. Display memory control
The SED1335 series can directly access static RAM and
PROM. The designer may use a mixture of these two
types of memory to achieve an optimum trade-off be-
tween low cost and low power consumption.
Pin Name
Function
VA0 to VA15
16-bit display memory address. When accessing character generator RAM or ROM, VA0 to
VA3, reflect the lower 4 bits of the SED1335 series’s row counter.
VD0 to VD7 8-bit tristate display memory data bus. These pins are enabled when VR/W is LOW.
VWR
Active-LOW display memory write control output.
VRD
Active-LOW display memory read control output.
VCE
Active-LOW static memory standby control signal. VCE can be used with CS.
6
EPSON
SED1335 Series
Technical Manual
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet SED1335.PDF ] | |
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