Purchase DP8431V, In-stock DP8431V From SeekIC.
Part Number: DP8431V
Description: The DP8430V31V32V dynamic RAM controllers provide a low cost single chip interface between dynamic RAM and all 8- 16- a...
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DP8431V
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DataSheet
General Description
DP8431V General Description
The DP8430V31V32V dynamic RAM controllers provide a low cost single chip interface between dynamic RAM and all 8- 16- and 32-bit systems The DP8430V31V32V 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 access cycles including burst mode accesses RAS low time during refreshes and RAS precharge time after refreshes and back to back accesses are guaranteed through the insertion of wait states Separate on-chip precharge counters for each RAS output can be used for memory interleaving to avoid delayed back to back accesses because of precharge An additional feature of the DP8432V is two access ports to simplify dual accessing Arbitration among these ports and refresh is done on chip
DP8431V Maximum Ratings
TemperatureunderBias......................................................0to +70
StorageTemperature ...................................................-65to +150
All Input or Output Voltage
withRespecttoGND....................................................... -0.5Vto+ 7V
PowerDissipation 20MHz.............................................................0.5W
ESDRating..................................................................................2000V
TemperatureCycle ..........................................................300of0/125
StorageTemperature ...................................................-65to +150
All Input or Output Voltage
withRespecttoGND....................................................... -0.5Vto+ 7V
PowerDissipation 20MHz.............................................................0.5W
ESDRating..................................................................................2000V
TemperatureCycle ..........................................................300of0/125
DP8431V Features
On chip high precision delay line to guarantee critical DRAM access timing parameters microCMOS process for low power
High capacitance drivers for RAS CASWE 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
Can use a single clock source Up to 33 MHz operating frequency
On board Port APort B (DP8432V only)refresh arbitration logic
Direct interface to all major microprocessors
4 RAS and 4 CAS drivers (the RAS and CAS configuration is programmable)
High capacitance drivers for RAS CASWE 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
Can use a single clock source Up to 33 MHz operating frequency
On board Port APort B (DP8432V only)refresh arbitration logic
Direct interface to all major microprocessors
4 RAS and 4 CAS drivers (the RAS and CAS configuration is programmable)
DP8431V Connection Diagram
DP8431V
PDF/DataSheet Download
- Datasheet: DP8431V
- File Size: 788843 KB
- Manufacturer: NSC [National Semiconductor]
- Click here to Download
- ·DP802518
- National Semiconductor
- 167262 KB
- ·DP8212
- NSC [National Semiconductor]
- 8-Bit Input/Output Port
- 193680 KB
- ·DP8212J
- NSC [National Semiconductor]
- 8-Bit Input/Output Port
- 193680 KB
- ·DP8212MJ
- NSC [National Semiconductor]
- 8-Bit Input/Output Port
- 193680 KB
- ·DP8212N
- NSC [National Semiconductor]
- 8-Bit Input/Output Port
- 193680 KB
- ·DP8216
- NSC [National Semiconductor]
- 4-Bit Bidirectional Bus Transceivers
- 120918 KB
- ·DP8216J
- NSC [National Semiconductor]
- 4-Bit Bidirectional Bus Transceivers
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- ·DP8216MJ
- NSC [National Semiconductor]
- 4-Bit Bidirectional Bus Transceivers
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DP8431V Relative Products
DP8430V
The DP8430V31V32V dynamic RAM controllers provide a low cost single chip interface between dynamic RAM and all 8- 16- and 32-bit systems The DP8430V31V32V generate all the required access control signal timing for DRAMs An on-chip refresh request clock is us...
DP8429/NS32829
The DP8428 and DP8429 1M DRAM Controller/Drivers are designed to provide ``No-Waitstate'' CPU interface to Dynamic RAM arrays of up to 8 Mbytes and larger. The DP8428 and DP8429 are tailored for 32-bit and 16-bit system requirements, respectively. Both devic...
DP8429
The DP8428 and DP8429 1M DRAM Controller/Drivers are designed to provide ``No-Waitstate'' CPU interface to Dynamic RAM arrays of up to 8 Mbytes and larger. The DP8428 and DP8429 are tailored for 32-bit and 16-bit system requirements, respectively. Both devic...
DP8428/NS32828
The DP8428 and DP8429 1M DRAM Controller/Drivers are designed to provide ``No-Waitstate'' CPU interface to Dynamic RAM arrays of up to 8 Mbytes and larger. The DP8428 and DP8429 are tailored for 32-bit and 16-bit system requirements, respectively. The DP8428...
DP8428
The DP8428 and DP8429 1M DRAM Controller/Drivers are designed to provide ``No-Waitstate'' CPU interface to Dynamic RAM arrays of up to 8 Mbytes and larger. The DP8428 and DP8429 are tailored for 32-bit and 16-bit system requirements, respectively. Both devic...
DP84244
The DP84240 and DP84244 are octal TRI-STATE drivers which are designed for heavy capacitive load applications such as fast data buffers or as memory address drivers The DP84240 is an inverting driver which is pin-compatible withboth the 74S240 and AM2965 The...
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