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Nanya Technology - 256MB DIMM

Numéro de référence NT256D64S88ABG
Description 256MB DIMM
Fabricant Nanya Technology 
Logo Nanya Technology 





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NT256D64S88ABG fiche technique
NT256D64S88ABG
256MB : 32M x 64
omPC2700 Unbuffered DIMM
U.c184pin One Bank Unbuffered DDR SDRAM MODULE Based on DDR333 32Mx8 SDRAM
heet4Features
S• 184-Pin Unbuffered 8-Byte Dual In-Line Memory Module
ta• 32Mx64 Double Data Rate (DDR) SDRAM DIMM
a• Performance:
.DSpeed Sort
PC2700
-6
Unit
wDIMM CAS Latency
2.5 2
wf CK Clock Frequency
166 133 MHz
w t CK Clock Cycle
6 7.5 ns
f DQ DQ Burst Frequency
333
266 MHz
• Intended for 100 MHz and 133 MHz applications
m• Inputs and outputs are SSTL-2 compatible
• VDD = 2.5Volt ± 0.2, VDDQ = 2.5Volt ± 0.2
o• SDRAMs have 4 internal banks for concurrent operation
.c• Module has one physical bank
• Differential clock inputs
• Data is read or written on both clock edges
• DRAM DLL aligns DQ and DQS transitions with clock
transitions.
• Address and control signals are fully synchronous to positive
clock edge
• Programmable Operation:
- DIMM CAS Latency: 2, 2.5
- Burst Type: Sequential or Interleave
- Burst Length: 2, 4, 8
- Operation: Burst Read and Write
• Auto-Refresh (CBR) and Self-Refresh Modes
• Automatic and controlled precharge commands
• 13/10/1 Addressing (row/column/bank)
• 7.8 µs Max. Average Periodic Refresh Interval
• Serial Presence Detect
• Gold contacts
• SDRAMs in 66-pin TSOP Type II Package
t4UDescription
NT256D64S88ABG is an unbuffered 184-Pin Double Data Rate (DDR) Synchronous DRAM Dual In-Line Memory Module (DIMM),
eorganized as a one-bank high-speed memory array. The 32Mx64 module is a single-bank DIMM that uses eight 32Mx8 DDR
eSDRAMs in 400 mil TSOP packages. The DIMM achieves high-speed data transfer rates of up to 333MHz. The DIMM is intended for use
hin applications operating from 133 MHz to 166 MHz clock speeds with data rates of 266 to 333 MHz. Clock enable CKE0 controls all
Sdevices on the DIMM.
taPrior to any access operation, the device CAS latency and burst type/ length/operation type must be programmed into the DIMM by
address inputs A0-A12 and I/O inputs BA0 and BA1 using the mode register set cycle.
aThese DIMMs are manufactured using raw cards developed for broad industry use as reference designs. The use of these common
design files minimizes electrical variation between suppliers.
.DThe DIMM uses serial presence detects implemented via a serial EEPROM using the two-pin IIC protocol. The first 128 bytes of serial PD
data are programmed and locked during module assembly. The last 128 bytes are available to the customer.
wAll NANYA 184 DDR SDRAM DIMMs provide a high-performance, flexible 8-byte interface in a 5.25” long space-saving footprint.
wwOrdering Information
Part Number
NT256D64S88ABG-6
REV 1.1
08/2002
Speed
166MHz (6ns @ CL = 2.5)
133MHz (7.5ns @ CL= 2)
.comPC2700
Organization
32Mx64
Leads
Gold
Power
2.5V
w.DataSheet4U1
© NANYA TECHNOLOGY CORP.
wwNANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.

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