Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
DLX2416 Datasheet(PDF) 5 Page - OSRAM GmbH |
|
DLX2416 Datasheet(HTML) 5 Page - OSRAM GmbH |
5 / 5 page 2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA Appnote 14 www.infineon.com/opto • 1-888-Infineon (1-888-463-4636) OSRAM Opto Semiconductors GmbH & Co. OHG • Regensburg, Germany www.osram-os.com • +49-941-202-7178 5 May 31, 2000-12 Interfacing the DLX2416 A general and straightforward interface circuit is shown in Figure 6. This scheme can easily interface to µP sys- tems or any other systems which can provide the seven data lines, appropriate address and control lines Parallel I/O The parallel I/O device of a microprocessor can easily be connected to the circuit in Figure 6. One eight bit output port can provide the seven input data bits and the cursor (CU). Another eight bit output port can con- tain the address and chip enable information and the other control signals. Figure 7 illustrates a 16-character display with an 8080 system using the 8255 programmable peripheral inter- face I/O device. The following program will display a simple 16-character message using this interface. I/O or Memory Mapped Addressing Some designers may wish to avoid the additional cost of a parallel I/O in their system. Structuring the address- ing architecture for the DLX2416 to look like a set of peripheral or output devices (I/O mapped) or RAM’s and ROM’s (memory mapped) is very easy. Figure 8 shows the simplicity of interfacing to microprocessors, such as 8080, Z80 and 6502 as examples. The interface with the 6800 microprocessor in Figure 9 illustrates the need for designers to check the timing requirements of the DLX2416 and the µP. The typical data output hold time is only 30 ns for DBE= ∅2 timing; two inverters in the DBE line are added to increase the data output hold time for compatibility with the 50 nS minimum spec of the DLX2416. Conclusion Although other manufacturers’ products are used in examples, this application note does not imply specific endorsement, or recommendation or warranty of other manufacturers’ products by Infineon / OSRAM. The interface schemes shown demonstrate the sim- plicity of using the DLX2416 with microprocessors. The slight differences encountered with various micropro- cessors to interface with the DLX2416 are similar to those encountered when using different RAMs. The techniques used in the examples were shown for their generality. The user will undoubtedly invent other schemes to optimize his particular system to its requirements. Figure 8. Mapped interface Figure 9. 6800 microprocessor interface Address Dis play Select Decoder Parallel I/0 Device Optional Buffers Reset Int Hold Wait Display Display Display Display 8980 Z80 6502 D15 D0 OSC A0 A1 A2 A3 Data 0-6 Data Control CUE CLR BL WR Address Data Control Data Address DBE Decoder 6820 PIA CUE BL CLR Data Address H1 H2 01 02 Clock Driver 6800 BA VMA R/W CE CE Reset NMI Halt IRQ TSC A0–A1 D0–D7 Display Display Display Display Data D15 D0 W |
Número de pieza similar - DLX2416 |
|
Descripción similar - DLX2416 |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |