Recherchez avec le numéro de pièce ainsi que le fabricant ou la description
DP8422A |
Click to view a larger image
| Part Number | DP8422A |
| Manufacturer | National Semiconductor |
| Description | The DP8420A 21A 22A dynamic RAM controllers provide a low cost single chip interface between dynamic RAM and all 8- 16- and 32-bit systems The DP8420A 21A 22A generate all the required access control ... |
| Features |
Y Y Y
Y
Y
Y Y
Y
Y
On chip high precision delay line to guarantee critical DRAM access timing parameters microCMOS process for low power High capacitance drivers for RAS CAS WE and DRAM address on chip On chip support for nibble page and static column DRAMs Byte enable signals on chip allow byte writing in a word size up to 32 bits with no external logic Selection of controller speeds 20 MHz and 25 MHz On board Port A Port B (DP8422A only) refresh arbitration logic Direct interface to all major microprocessors (application notes available) 4 RAS and 4 CAS drivers (the RAS and CAS configur... |
| Document |
 DP8422A Data Sheet
PDF 824.52KB |
| Distributor | Stock | Price | Buy |
|---|
| No. | Parte # | Fabricante | Descripción | Hoja de Datos |
|---|---|---|---|---|
| 1 | DP8422V |
National Semiconductor |
microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
|
| 2 | DP8420A |
National Semiconductor |
(DP8420A - DP8422A) microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
|
| 3 | DP8420V |
National Semiconductor |
microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
|
| 4 | DP8421A |
National Semiconductor |
(DP8420A - DP8422A) microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
|
| 5 | DP8421V |
National Semiconductor |
microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
|