HYB39S256400T-10 SIEMENS [Siemens Semiconductor Group], HYB39S256400T-10 Datasheet

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HYB39S256400T-10

Manufacturer Part Number
HYB39S256400T-10
Description
256 MBit Synchronous DRAM
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
256 MBit Synchronous DRAM
Preliminary Information
• High Performance:
• Fully Synchronous to Positive Clock Edge
• 0 to 70 C operating temperature
• Four Banks controlled by BA0 & BA1
• Programmable CAS Latency: 2, 3, 4
• Programmable Wrap Sequence: Sequential
• Programmable Burst Length:
The
4 banks
chronous devices achieve high speed data transfer rates for CAS latencies 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 256 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 four memory banks in an interleave fashion allows random access operation to occur
at higher rate than is possible with standard DRAMs. A sequential and gapless data rate of is
possible depending on burst length, CAS latency and speed grade of the device.
Auto Refresh (CBR) and Self Refresh operation are supported. These devices operates with a
single 3.3 V
Semiconductor Group
f
t
t
t
t
or Interleave
1, 2, 4, 8
CK
CK3
AC3
CK2
AC2
HYB 39S256400/800/160T
16 MBit 4, 4 banks
125
10
-8
8
6
6
0.3 V power supply and are available in TSOPII packages.
100
-8B
10
12
6
7
100
-10
10
15
7
8
Units
MHz
ns
ns
ns
ns
8 MBit 8 and 4 banks
are
four
1
bank
• Multiple Burst Read with Single Write
• Automatic and Controlled Precharge
• Data Mask for Read/Write control ( 4, 8)
• Data Mask for byte control ( 16)
• Auto Refresh (CBR) and Self Refresh
• Suspend Mode and Power Down Mode
• 8192 refresh cycles/64 ms 7,8
• Random Column Address every CLK
• Single 3.3 V
• LVTTL Interface versions
• Plastic Packages:
• -8 part for PC100 2-2-2 operation
Operation
Command
(1-N Rule)
P-TSOPII-54 400mil width ( 4, 8, 16)
-8B part for PC100 3-2-3 operation
-10 part for PC66 2-2-2 operation
Synchronous
4 MBit 16 respectively. These syn-
HYB 39S256400/800/160T
0.3 V Power Supply
DRAM’s
organized
1998-10-01
as

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