This datasheet includes multiple variants, all published together in a single manufacturer document.
| Part number | DP8421A |
|---|---|
| Datasheet | DP8421A DP8422A Datasheet (PDF) |
| File Size | 824.52 KB |
| Manufacturer | National Semiconductor (now Texas Instruments) |
| Description | (DP8420A - DP8422A) microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
|
|
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 signal timing for DRAMs An on-chip refresh request clock is used to automatically refresh the DRAM array Refreshes and accesses are arbitrated on chip If necessary a WAIT or DTACK output inserts wait states into system...
See all National Semiconductor (now Texas Instruments) datasheets
| Part Number | Description |
|---|---|
| DP8421V | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8420A | (DP8420A - DP8422A) microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8420V | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8422A | (DP8420A - DP8422A) microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8422V | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP84240 | (DP84240 / DP84244) TRI-STATE Drivers Which are Designed For Heavy Capacitive Load Applications |
| DP84244 | (DP84240 / DP84244) TRI-STATE Drivers Which are Designed For Heavy Capacitive Load Applications |
| DP8428 | (DP8428 / DP8429) 1 Megabit High Speed Dynamic RAM Controller/Drivers |
| DP8429 | (DP8428 / DP8429) 1 Megabit High Speed Dynamic RAM Controller/Drivers |
| DP8402A | Error Detection and Correction Circuits |
