 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
7733 Datasheet(PDF) 747 Page - Renesas Technology Corp |
|
|
|||||||||||||||||||||||||||||
7733 Datasheet(HTML) 747 Page - Renesas Technology Corp |
|
|
747 / 940 page  APPLICATIONS 7735 Group User’s Manual 17–21 17.1.5 I/O expansion example I/O expansion is realized with the memory-mapped method. The method and points in I/O expansion are the same as those in memory expansion. Figure 17.1.15 shows a port expansion example using the M5M81C55P-2. In this example, the M5M81C55P- 2 is connected to the external data bus and programmable I/O ports expand by 22 bits. A reset signal for __ an external device is supplied from port P43 and IO/M is supplied from port P44. Note that, when f(XIN) > 10 MHz, bus buffer ALS245A or others is necessary. 17.1 Memory expansion Fig. 17.1.14 Port expansion example where M5M81C55P-2 is used CNVss BYTE A0/D0 to A7/D7 ALE M37735MHBXXXFP WEL Circuit condition: Wait 0 is valid. CE AD0 to AD7 Port C Port B Port A M5M81C55P-2 WR P44 10 MHz XIN XOUT I/O RDE IO/M ALE RD CS1 P43 RESET |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
