16 MBit Synchronous DRAM
Description
www.
DataSheet4U.
com
16 MBit Synchronous DRAM (second generation)
Advanced Information • High Performance: CAS latency = 3 -8 125 8 7 -10 100 10 8 Units MHz ns ns
HYB 39S16400/800/160AT-8/-10
• Multiple Burst Read with Single Write Operation • Automatic and Controlled Precharge Command • Data Mask for Read/Write control (× 4, × 8) • Dual Data Mask for byte control (× 16) • Auto Refresh (CBR) and Self Refresh • Suspend Mode and Power Down Mode • 4096 refresh cycles/64 ms • Random Column Address every CLK (1-N Rule) • Single 3.
3 V ± 0.
3 V Power Supply • LVTTL Interface versions • Plastic Packages: P-TSOPII-44-1 400 mil width (× 4, × 8) P-TSOPII-50-1 400 mil width (× 16)
fCK tCK3 tAC3
• Single Pulsed RAS Interface • Fully Synchronous to Positive Clock Edge • 0 to 70 °C operating temperature • Dual Banks controlled by A11 (Bank Select) • Programmable CAS Latency: 1, 2, 3 • Programmable Wrap Sequence: Sequential or Interleave • Programmable Burst Length: 1, 2, 4, 8 and full page for Sequential type 1, 2, 4, 8 for Interleave type
The HYB 39S1640x/80x/16xAT are dual bank Synchronous DRAM’s based on the die revisions “B” and “C” and organized as 2 banks × 2 MBit × 4, 2 banks × 1 MBit × 8 and 2 banks × 512 kBit × 16 respectively.
These synchronous devices achieve high speed data transfer rates up to 125 MHz by employing a chip architecture that prefetches multiple bits and then synchronizes the output data to a system clock.
The chip is fabricated with SIEMENS advanced 16 MBit DRAM process technology.
The device is designed to comply with all JEDEC standards set for synchronous DRAM products, both electrically and mechanically.
All of the control, address, data input and output circuits are synchronized with the positive edge of an externally supplied clock.
Operating the two memory banks in an interleaved fashion allows random access operation to occur at higher rate than is possible with standard DRAMs.
A sequential and gapless data rate of up to 125 MHz is possible d...
Similar Datasheet
